KAREN LYNNE PARKER FNP
Prescription History 1982910824
Nurse Practitioner - Family in Monroe, LA
What does Karen Parker prescribe?
In 2024, Karen Parker wrote 3,786 Medicare prescriptions for 85 medications. The most prescribed was Amlodipine Besylate, with 234 prescriptions for 64 patients.
Medicare Part D only. These are prescriptions filled by people with Medicare drug coverage in 2024, from the CMS data released in 2026, the most recent year available. CMS does not publish medications with fewer than 11 prescriptions, so this is not a full list of what Karen Parker prescribes.
Medications 85 medications
Prescriptions filled under Medicare Part D in 2024. Select a medication to see what it is used for and how it compares with other Louisiana prescribers.
What it is used for
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with Louisiana prescribers
Karen Parker wrote 234 prescriptions for Amlodipine Besylate, about 1.3 times as often as the typical Louisiana prescriber of it (177). Medicare paid $5.04 per fill, versus $5.05 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Louisiana prescribers
Karen Parker wrote 213 prescriptions for Levothyroxine Sodium, about 1.3 times as often as the typical Louisiana prescriber of it (162). Medicare paid $13.09 per fill, versus $8.64 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Atorvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with Louisiana prescribers
Karen Parker wrote 212 prescriptions for Atorvastatin Calcium, about as often as the typical Louisiana prescriber of it (198). Medicare paid $11.84 per fill, versus $8.79 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with Louisiana prescribers
Karen Parker wrote 196 prescriptions for Losartan Potassium, about 1.7 times as often as the typical Louisiana prescriber of it (119). Medicare paid $14.08 per fill, versus $8.96 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Gabapentin is used with other medications to prevent and control seizures.
Compared with Louisiana prescribers
Karen Parker wrote 151 prescriptions for Gabapentin, about 1.2 times as often as the typical Louisiana prescriber of it (122). Medicare paid $18.17 per fill, versus $12.91 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat high blood pressure.
Compared with Louisiana prescribers
Karen Parker wrote 124 prescriptions for Hydrochlorothiazide, about 1.4 times as often as the typical Louisiana prescriber of it (89). Medicare paid $5.11 per fill, versus $3.79 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with Louisiana prescribers
Karen Parker wrote 124 prescriptions for Omeprazole, about 1.3 times as often as the typical Louisiana prescriber of it (92). Medicare paid $12.10 per fill, versus $11.41 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with Louisiana prescribers
Karen Parker wrote 107 prescriptions for Pantoprazole Sodium, about as often as the typical Louisiana prescriber of it (118). Medicare paid $14.29 per fill, versus $11.00 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with Louisiana prescribers
Karen Parker wrote 106 prescriptions for Metoprolol Succinate, about 82% as often as the typical Louisiana prescriber of it (129). Medicare paid $24.34 per fill, versus $12.02 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with Louisiana prescribers
Karen Parker wrote 105 prescriptions for Potassium Chloride, about 1.2 times as often as the typical Louisiana prescriber of it (85). Medicare paid $28.15 per fill, versus $16.08 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Louisiana prescribers
Karen Parker wrote 104 prescriptions for Metformin Hcl, about as often as the typical Louisiana prescriber of it (101). Medicare paid $13.25 per fill, versus $6.21 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Lisinopril is used to treat high blood pressure.
Compared with Louisiana prescribers
Karen Parker wrote 102 prescriptions for Lisinopril, about as often as the typical Louisiana prescriber of it (103). Medicare paid $8.10 per fill, versus $5.84 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat depression.
Compared with Louisiana prescribers
Karen Parker wrote 74 prescriptions for Trazodone Hcl, about as often as the typical Louisiana prescriber of it (82). Medicare paid $13.10 per fill, versus $8.14 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Allopurinol is used to treat gout and certain types of kidney stones.
Compared with Louisiana prescribers
Karen Parker wrote 71 prescriptions for Allopurinol, about 1.2 times as often as the typical Louisiana prescriber of it (58). Medicare paid $20.42 per fill, versus $8.63 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Furosemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease.
Compared with Louisiana prescribers
Karen Parker wrote 69 prescriptions for Furosemide, about 72% as often as the typical Louisiana prescriber of it (96). Medicare paid $8.23 per fill, versus $4.24 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Glimepiride is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Louisiana prescribers
Karen Parker wrote 66 prescriptions for Glimepiride, about 1.2 times as often as the typical Louisiana prescriber of it (53). Medicare paid $23.28 per fill, versus $8.21 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Simvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with Louisiana prescribers
Karen Parker wrote 65 prescriptions for Simvastatin, about as often as the typical Louisiana prescriber of it (61). Medicare paid $15.89 per fill, versus $7.67 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Rosuvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with Louisiana prescribers
Karen Parker wrote 60 prescriptions for Rosuvastatin Calcium, about 41% as often as the typical Louisiana prescriber of it (146). Medicare paid $29.79 per fill, versus $11.71 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Clonazepam is used to prevent and control seizures.
Compared with Louisiana prescribers
Karen Parker wrote 51 prescriptions for Clonazepam, about 81% as often as the typical Louisiana prescriber of it (63). Medicare paid $3.08 per fill, versus $6.49 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Semaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Louisiana prescribers
Karen Parker wrote 51 prescriptions for Ozempic, about 72% as often as the typical Louisiana prescriber of it (71). Medicare paid $903.13 per fill, versus $1,187.13 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Pravastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with Louisiana prescribers
Karen Parker wrote 51 prescriptions for Pravastatin Sodium, about 68% as often as the typical Louisiana prescriber of it (75). Medicare paid $17.58 per fill, versus $12.41 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder).
Compared with Louisiana prescribers
Karen Parker wrote 49 prescriptions for Fluoxetine Hcl, about as often as the typical Louisiana prescriber of it (46). Medicare paid $11.60 per fill, versus $8.71 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Fluticasone is used to relieve seasonal and year-round allergic and non-allergic nasal symptoms, such as stuffy/runny nose, itching, and sneezing.
Compared with Louisiana prescribers
Karen Parker wrote 44 prescriptions for Fluticasone Propionate, about 68% as often as the typical Louisiana prescriber of it (64). Medicare paid $15.53 per fill, versus $13.16 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with Louisiana prescribers
Karen Parker wrote 41 prescriptions for Metoprolol Tartrate, about half as often as the typical Louisiana prescriber of it (69). Medicare paid $13.38 per fill, versus $5.86 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Nifedipine is used alone or in combination with other drugs to treat high blood pressure (hypertension).
Compared with Louisiana prescribers
Karen Parker wrote 41 prescriptions for Nifedipine Er, about 86% as often as the typical Louisiana prescriber of it (48). Medicare paid $40.38 per fill, versus $19.92 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Montelukast is used to control and prevent symptoms caused by asthma (such as wheezing and shortness of breath).
Compared with Louisiana prescribers
Karen Parker wrote 40 prescriptions for Montelukast Sodium, about half as often as the typical Louisiana prescriber of it (76). Medicare paid $13.24 per fill, versus $9.23 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with Louisiana prescribers
Karen Parker wrote 39 prescriptions for Tamsulosin Hcl, about 38% as often as the typical Louisiana prescriber of it (102). Medicare paid $22.68 per fill, versus $11.15 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Albuterol (also known as salbutamol) is used to prevent and treat wheezing and shortness of breath caused by breathing problems (such as asthma, chronic obstructive pulmonary disease).
Compared with Louisiana prescribers
Karen Parker wrote 38 prescriptions for Albuterol Sulfate Hfa, about half as often as the typical Louisiana prescriber of it (69). Medicare paid $52.28 per fill, versus $30.08 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat depression.
Compared with Louisiana prescribers
Karen Parker wrote 37 prescriptions for Citalopram Hbr, about 83% as often as the typical Louisiana prescriber of it (44). Medicare paid $5.27 per fill, versus $6.20 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Carvedilol is used to treat high blood pressure and heart failure.
Compared with Louisiana prescribers
Karen Parker wrote 36 prescriptions for Carvedilol, about half as often as the typical Louisiana prescriber of it (78). Medicare paid $12.52 per fill, versus $7.29 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Meloxicam is used to treat arthritis.
Compared with Louisiana prescribers
Karen Parker wrote 36 prescriptions for Meloxicam, about half as often as the typical Louisiana prescriber of it (76). Medicare paid $8.64 per fill, versus $3.80 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder, post-traumatic stress disorder, social anxiety disorder).
Compared with Louisiana prescribers
Karen Parker wrote 36 prescriptions for Sertraline Hcl, about half as often as the typical Louisiana prescriber of it (67). Medicare paid $11.06 per fill, versus $7.79 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Louisiana prescribers
Karen Parker wrote 34 prescriptions for Lantus Solostar, about 80% as often as the typical Louisiana prescriber of it (42). Medicare paid $87.20 per fill, versus $120.55 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Azithromycin is used to treat a wide variety of bacterial infections.
Compared with Louisiana prescribers
Karen Parker wrote 33 prescriptions for Azithromycin, about 83% as often as the typical Louisiana prescriber of it (40). Medicare paid $3.11 per fill, versus $5.13 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Famotidine is used to treat ulcers of the stomach and intestines and to prevent intestinal ulcers from coming back after they have healed.
Compared with Louisiana prescribers
Karen Parker wrote 32 prescriptions for Famotidine, about half as often as the typical Louisiana prescriber of it (54). Medicare paid $10.78 per fill, versus $12.19 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Clopidogrel is used to prevent heart attacks and strokes in persons with heart disease (recent heart attack), recent stroke, or blood circulation disease (peripheral vascular disease).
Compared with Louisiana prescribers
Karen Parker wrote 31 prescriptions for Clopidogrel, about 35% as often as the typical Louisiana prescriber of it (88). Medicare paid $15.66 per fill, versus $9.34 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Atenolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with Louisiana prescribers
Karen Parker wrote 30 prescriptions for Atenolol, about 79% as often as the typical Louisiana prescriber of it (38). Medicare paid $15.03 per fill, versus $6.61 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat anxiety.
Compared with Louisiana prescribers
Karen Parker wrote 30 prescriptions for Buspirone Hcl, about half as often as the typical Louisiana prescriber of it (51). Medicare paid $38.80 per fill, versus $12.48 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Empagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Louisiana prescribers
Karen Parker wrote 29 prescriptions for Jardiance, about half as often as the typical Louisiana prescriber of it (66). Medicare paid $852.13 per fill, versus $922.05 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders.
Compared with Louisiana prescribers
Karen Parker wrote 27 prescriptions for Prednisone, about half as often as the typical Louisiana prescriber of it (53). Medicare paid $6.61 per fill, versus $3.05 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with Louisiana prescribers
Karen Parker wrote 26 prescriptions for Escitalopram Oxalate, about 40% as often as the typical Louisiana prescriber of it (65). Medicare paid $10.56 per fill, versus $10.13 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat blood clots (such as in deep vein thrombosis-DVT or pulmonary embolus-PE) and/or to prevent new clots from forming in your body.
Compared with Louisiana prescribers
Karen Parker wrote 25 prescriptions for Warfarin Sodium, about 64% as often as the typical Louisiana prescriber of it (39). Medicare paid $12.75 per fill, versus $7.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Zolpidem is used for a short time to treat a certain sleep problem (insomnia) in adults.
Compared with Louisiana prescribers
Karen Parker wrote 24 prescriptions for Zolpidem Tartrate, about half as often as the typical Louisiana prescriber of it (57). Medicare paid $6.41 per fill, versus $5.57 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Ibuprofen is used to relieve pain from various conditions such as headache, dental pain, menstrual cramps, muscle aches, or arthritis.
Compared with Louisiana prescribers
Karen Parker wrote 22 prescriptions for Ibuprofen, about 60% as often as the typical Louisiana prescriber of it (36). Medicare paid $5.72 per fill, versus $7.31 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Valacyclovir is used to treat infections caused by certain types of viruses.
Compared with Louisiana prescribers
Karen Parker wrote 22 prescriptions for Valacyclovir, about as often as the typical Louisiana prescriber of it (23). Medicare paid $29.22 per fill, versus $33.84 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Donepezil is used to treat confusion (dementia) related to Alzheimer's disease.
Compared with Louisiana prescribers
Karen Parker wrote 21 prescriptions for Donepezil Hcl, about 33% as often as the typical Louisiana prescriber of it (64). Medicare paid $12.50 per fill, versus $10.95 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with Louisiana prescribers
Karen Parker wrote 21 prescriptions for Duloxetine Hcl, about 32% as often as the typical Louisiana prescriber of it (65). Medicare paid $10.05 per fill, versus $18.16 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Apixaban is used to prevent serious blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip/knee replacement surgery.
Compared with Louisiana prescribers
Karen Parker wrote 21 prescriptions for Eliquis, about 20% as often as the typical Louisiana prescriber of it (104). Medicare paid $778.58 per fill, versus $758.12 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat high blood pressure.
Compared with Louisiana prescribers
Karen Parker wrote 21 prescriptions for Lisinopril-Hydrochlorothiazide, about half as often as the typical Louisiana prescriber of it (40). Medicare paid $12.24 per fill, versus $7.23 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury).
Compared with Louisiana prescribers
Karen Parker wrote 21 prescriptions for Tizanidine Hcl, about 32% as often as the typical Louisiana prescriber of it (66). Medicare paid $8.62 per fill, versus $9.25 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Ezetimibe is used along with a low cholesterol/low fat diet and exercise to help lower cholesterol in the blood.
Compared with Louisiana prescribers
Karen Parker wrote 20 prescriptions for Ezetimibe, about 27% as often as the typical Louisiana prescriber of it (74). Medicare paid $54.86 per fill, versus $17.76 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This drug is used to treat high blood pressure.
Compared with Louisiana prescribers
Karen Parker wrote 20 prescriptions for Losartan-Hydrochlorothiazide, about half as often as the typical Louisiana prescriber of it (42). Medicare paid $24.75 per fill, versus $12.02 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Pioglitazone is a diabetes drug (thiazolidinedione-type, also called "glitazones") used along with a proper diet and exercise program to control high blood sugar in patients with type 2 diabetes.
Compared with Louisiana prescribers
Karen Parker wrote 20 prescriptions for Pioglitazone Hcl, about half as often as the typical Louisiana prescriber of it (43). Medicare paid $16.22 per fill, versus $13.25 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Louisiana prescribers
Karen Parker wrote 19 prescriptions for Glipizide, about half as often as the typical Louisiana prescriber of it (36). Medicare paid $19.04 per fill, versus $7.72 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Louisiana prescribers
Karen Parker wrote 19 prescriptions for Glipizide Er, about half as often as the typical Louisiana prescriber of it (34). Medicare paid $27.57 per fill, versus $12.12 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy.
Compared with Louisiana prescribers
Karen Parker wrote 19 prescriptions for Ondansetron Odt, about 63% as often as the typical Louisiana prescriber of it (30). Medicare paid $7.83 per fill, versus $11.85 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Spironolactone is used to treat high blood pressure and heart failure.
Compared with Louisiana prescribers
Karen Parker wrote 19 prescriptions for Spironolactone, about 40% as often as the typical Louisiana prescriber of it (48). Medicare paid $7.31 per fill, versus $7.47 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Esomeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with Louisiana prescribers
Karen Parker wrote 18 prescriptions for Esomeprazole Magnesium, about half as often as the typical Louisiana prescriber of it (33). Medicare paid $18.49 per fill, versus $32.00 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Fenofibrate is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with Louisiana prescribers
Karen Parker wrote 18 prescriptions for Fenofibrate, about 60% as often as the typical Louisiana prescriber of it (30). Medicare paid $28.84 per fill, versus $18.91 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This combination medication is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Louisiana prescribers
Karen Parker wrote 18 prescriptions for Janumet, about as often as the typical Louisiana prescriber of it (20). Medicare paid $713.89 per fill, versus $760.13 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Alendronate is used to prevent and treat certain types of bone loss (osteoporosis) in adults.
Compared with Louisiana prescribers
Karen Parker wrote 17 prescriptions for Alendronate Sodium, about 33% as often as the typical Louisiana prescriber of it (51). Medicare paid $8.45 per fill, versus $7.43 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Cyclobenzaprine is used short-term to treat muscle spasms.
Compared with Louisiana prescribers
Karen Parker wrote 17 prescriptions for Cyclobenzaprine Hcl, about 35% as often as the typical Louisiana prescriber of it (48). Medicare paid $2.02 per fill, versus $6.88 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Alprazolam is used to treat anxiety and panic disorders.
Compared with Louisiana prescribers
Karen Parker wrote 16 prescriptions for Alprazolam, about 17% as often as the typical Louisiana prescriber of it (94). Medicare paid $5.65 per fill, versus $4.00 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Doxazosin is used alone or with other drugs to treat high blood pressure (hypertension).
Compared with Louisiana prescribers
Karen Parker wrote 16 prescriptions for Doxazosin Mesylate, about half as often as the typical Louisiana prescriber of it (38). Medicare paid $26.96 per fill, versus $12.76 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Dapagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Louisiana prescribers
Karen Parker wrote 16 prescriptions for Farxiga, about 33% as often as the typical Louisiana prescriber of it (48). Medicare paid $618.76 per fill, versus $813.03 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is used to control and prevent symptoms (wheezing and shortness of breath) caused by asthma or ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with Louisiana prescribers
Karen Parker wrote 16 prescriptions for Fluticasone-Salmeterol, about 65% as often as the typical Louisiana prescriber of it (25). Medicare paid $131.51 per fill, versus $158.13 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Amoxicillin is used to treat a wide variety of bacterial infections.
Compared with Louisiana prescribers
Karen Parker wrote 15 prescriptions for Amoxicillin, about 36% as often as the typical Louisiana prescriber of it (41). Medicare paid $3.98 per fill, versus $3.08 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This combination medication is used to treat tension headaches.
Compared with Louisiana prescribers
Karen Parker wrote 15 prescriptions for Butalbital-Acetaminophen, about 1.2 times as often as the typical Louisiana prescriber of it (13). Medicare paid $55.97 per fill, versus $368.57 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used alone or with other medications to treat high blood pressure (hypertension).
Compared with Louisiana prescribers
Karen Parker wrote 15 prescriptions for Clonidine Hcl, about 41% as often as the typical Louisiana prescriber of it (37). Medicare paid $15.34 per fill, versus $5.53 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Fluconazole is used to treat vaginal yeast infections.
Compared with Louisiana prescribers
Karen Parker wrote 15 prescriptions for Fluconazole, about half as often as the typical Louisiana prescriber of it (28). Medicare paid $4.83 per fill, versus $8.99 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Sitagliptin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Louisiana prescribers
Karen Parker wrote 15 prescriptions for Januvia, about 36% as often as the typical Louisiana prescriber of it (42). Medicare paid $1,149.70 per fill, versus $805.06 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy.
Compared with Louisiana prescribers
Karen Parker wrote 15 prescriptions for Ondansetron Hcl, about half as often as the typical Louisiana prescriber of it (31). Medicare paid $5.18 per fill, versus $9.61 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This is a long-acting form of oxybutynin that is used to treat overactive bladder and urinary conditions.
Compared with Louisiana prescribers
Karen Parker wrote 15 prescriptions for Oxybutynin Chloride Er, about 39% as often as the typical Louisiana prescriber of it (38). Medicare paid $13.73 per fill, versus $16.56 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Ramipril is used to treat high blood pressure (hypertension).
Compared with Louisiana prescribers
Karen Parker wrote 15 prescriptions for Ramipril, about half as often as the typical Louisiana prescriber of it (29). Medicare paid $13.77 per fill, versus $10.40 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat depression.
Compared with Louisiana prescribers
Karen Parker wrote 14 prescriptions for Amitriptyline Hcl, about 38% as often as the typical Louisiana prescriber of it (36). Medicare paid $10.98 per fill, versus $12.24 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Isosorbide mononitrate is used to prevent chest pain (angina) in patients with a certain heart condition (coronary artery disease).
Compared with Louisiana prescribers
Karen Parker wrote 14 prescriptions for Isosorbide Mononitrate Er, about 26% as often as the typical Louisiana prescriber of it (53). Medicare paid $27.80 per fill, versus $10.25 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Tiotropium is used to treat lung diseases such as asthma and COPD (bronchitis, emphysema).
Compared with Louisiana prescribers
Karen Parker wrote 13 prescriptions for Spiriva Respimat, about half as often as the typical Louisiana prescriber of it (26). Medicare paid $497.46 per fill, versus $649.97 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a combination of two antibiotics: sulfamethoxazole and trimethoprim.
Compared with Louisiana prescribers
Karen Parker wrote 13 prescriptions for Sulfamethoxazole-Trimethoprim, about half as often as the typical Louisiana prescriber of it (27). Medicare paid $2.02 per fill, versus $4.52 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Topiramate is used alone or with other medications to prevent and control seizures (epilepsy).
Compared with Louisiana prescribers
Karen Parker wrote 13 prescriptions for Topiramate, about 37% as often as the typical Louisiana prescriber of it (35). Medicare paid $12.03 per fill, versus $10.05 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Levocetirizine is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes/nose, and sneezing.
Compared with Louisiana prescribers
Karen Parker wrote 12 prescriptions for Levocetirizine Dihydrochloride, about 24% as often as the typical Louisiana prescriber of it (50). Medicare paid $31.73 per fill, versus $10.74 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as schizophrenia, bipolar disorder, sudden episodes of mania or depression associated with bipolar disorder).
Compared with Louisiana prescribers
Karen Parker wrote 12 prescriptions for Quetiapine Fumarate, about 19% as often as the typical Louisiana prescriber of it (62). Medicare paid $15.91 per fill, versus $13.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat high blood pressure (hypertension).
Compared with Louisiana prescribers
Karen Parker wrote 11 prescriptions for Atenolol-Chlorthalidone, about half as often as the typical Louisiana prescriber of it (22). Medicare paid $36.55 per fill, versus $21.93 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Diazepam is used to treat anxiety, alcohol withdrawal, and seizures.
Compared with Louisiana prescribers
Karen Parker wrote 11 prescriptions for Diazepam, about 33% as often as the typical Louisiana prescriber of it (33). Medicare paid $2.53 per fill, versus $4.96 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Lovastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with Louisiana prescribers
Karen Parker wrote 11 prescriptions for Lovastatin, about 35% as often as the typical Louisiana prescriber of it (31). Medicare paid $6.97 per fill, versus $8.40 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Oxybutynin is used to treat certain bladder and urinary conditions (such as overactive bladder).
Compared with Louisiana prescribers
Karen Parker wrote 11 prescriptions for Oxybutynin Chloride, about 40% as often as the typical Louisiana prescriber of it (28). Medicare paid $52.14 per fill, versus $14.32 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Karen Parker’s prescriptions
What does Karen Parker prescribe most?
In 2024 Medicare Part D data, Karen Parker's most prescribed medications were Amlodipine Besylate (234), Levothyroxine Sodium (213) and Atorvastatin Calcium (212).
How does Karen Parker's prescribing compare with other Louisiana prescribers?
Of the 85 medications with a state comparison, Karen Parker prescribes 5 more often than the typical Louisiana prescriber, 21 about as often and 59 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Karen Parker prescribes?
No. It covers prescriptions filled by people with Medicare Part D drug coverage in 2024, and CMS leaves out any medication with fewer than 11 prescriptions.
About this data
This page shows one provider’s slice of public Medicare files. NPI Profile does not receive prescriptions or patient records.
| Source | What it provides here | Data year |
|---|---|---|
| CMS Medicare Part D Prescribers by Provider and Drug | Each medication, prescriptions, patients, 30-day fills, days of medication and cost. State comparisons average the Louisiana prescribers of the same medication and form, where at least five wrote it. | 2024 (released 2026, the most recent available) |
| CMS Medicare Part D Drug Spending Dashboard | What each medication is used for. | 2024 |
- Only prescriptions filled by people with Medicare Part D drug coverage are counted. Private insurance, Medicaid and cash purchases are not.
- CMS leaves out medications with fewer than 11 prescriptions and hides patient counts under 11.
- Cost per fill is what the plan and the patient paid the pharmacy together, not what you pay at the counter.
- Medication descriptions are summaries from CMS. They are not medical advice; ask a health care professional about any medication.
