KAREN ELIZABETH RIVAS FNP-C
Prescription History 1497537310
Nurse Practitioner - Family in Bronx, NY
What does Karen Rivas prescribe?
In 2024, Karen Rivas wrote 2,683 Medicare prescriptions for 72 medications. The most prescribed was Atorvastatin Calcium, with 227 prescriptions for 114 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 Rivas prescribes.
Medications 72 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 New York prescribers.
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 New York prescribers
Karen Rivas wrote 227 prescriptions for Atorvastatin Calcium, about 1.2 times as often as the typical New York prescriber of it (195). Medicare paid $10.26 per fill, versus $10.41 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with New York prescribers
Karen Rivas wrote 137 prescriptions for Metformin Hcl, about 1.4 times as often as the typical New York prescriber of it (98). Medicare paid $3.82 per fill, versus $10.10 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with New York prescribers
Karen Rivas wrote 123 prescriptions for Amlodipine Besylate, about 81% as often as the typical New York prescriber of it (151). Medicare paid $5.73 per fill, versus $6.16 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
This medication is used to treat high blood pressure.
Compared with New York prescribers
Karen Rivas wrote 101 prescriptions for Hydrochlorothiazide, about 1.5 times as often as the typical New York prescriber of it (68). Medicare paid $1.83 per fill, versus $4.36 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 New York prescribers
Karen Rivas wrote 95 prescriptions for Albuterol Sulfate Hfa, about 1.3 times as often as the typical New York prescriber of it (74). Medicare paid $32.01 per fill, versus $33.48 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
Lisinopril is used to treat high blood pressure.
Compared with New York prescribers
Karen Rivas wrote 95 prescriptions for Lisinopril, about as often as the typical New York prescriber of it (93). Medicare paid $4.74 per fill, versus $6.94 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 New York prescribers
Karen Rivas wrote 89 prescriptions for Omeprazole, about 90% as often as the typical New York prescriber of it (99). Medicare paid $5.22 per fill, versus $11.48 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
This medication is used to treat dry, scaly skin conditions (such as xerosis, ichthyosis vulgaris) and can also help relieve itching from these conditions.
Compared with New York prescribers
Karen Rivas wrote 77 prescriptions for Ammonium Lactate, about as often as the typical New York prescriber of it (77). Medicare paid $19.19 per fill, versus $22.48 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 New York prescribers
Karen Rivas wrote 76 prescriptions for Jardiance, about 1.3 times as often as the typical New York prescriber of it (61). Medicare paid $984.46 per fill, versus $1,011.66 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
Vitamin D (ergocalciferol-D2, cholecalciferol-D3, alfacalcidol) is a fat-soluble vitamin that helps your body absorb calcium and phosphorus.
Compared with New York prescribers
Karen Rivas wrote 70 prescriptions for Vitamin D2, about 1.2 times as often as the typical New York prescriber of it (57). Medicare paid $0.74 per fill, versus $3.14 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with New York prescribers
Karen Rivas wrote 65 prescriptions for Gabapentin, about 79% as often as the typical New York prescriber of it (82). Medicare paid $6.71 per fill, versus $12.77 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 New York prescribers
Karen Rivas wrote 63 prescriptions for Fluticasone Propionate, about as often as the typical New York prescriber of it (62). Medicare paid $7.45 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
See also Warning section.
Compared with New York prescribers
Karen Rivas wrote 60 prescriptions for Diclofenac Sodium, about as often as the typical New York prescriber of it (59). Medicare paid $73.01 per fill, versus $169.32 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 New York prescribers
Karen Rivas wrote 60 prescriptions for Tamsulosin Hcl, about 62% as often as the typical New York prescriber of it (97). Medicare paid $14.49 per fill, versus $14.09 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 New York prescribers
Karen Rivas wrote 52 prescriptions for Famotidine, about 76% as often as the typical New York prescriber of it (69). Medicare paid $4.59 per fill, versus $13.04 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 New York prescribers
Karen Rivas wrote 52 prescriptions for Montelukast Sodium, about as often as the typical New York prescriber of it (57). Medicare paid $10.57 per fill, versus $9.83 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 New York prescribers
Karen Rivas wrote 51 prescriptions for Januvia, about as often as the typical New York prescriber of it (47). Medicare paid $732.62 per fill, versus $893.24 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
Meclizine is an antihistamine that is used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness.
Compared with New York prescribers
Karen Rivas wrote 47 prescriptions for Meclizine Hcl, about 1.2 times as often as the typical New York prescriber of it (39). Medicare paid $6.88 per fill, versus $7.95 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
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with New York prescribers
Karen Rivas wrote 44 prescriptions for Losartan Potassium, about 39% as often as the typical New York prescriber of it (113). Medicare paid $8.24 per fill, versus $9.47 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
Dulaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with New York prescribers
Karen Rivas wrote 43 prescriptions for Trulicity, about as often as the typical New York prescriber of it (42). Medicare paid $1,145.30 per fill, versus $1,286.03 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
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 New York prescribers
Karen Rivas wrote 42 prescriptions for Simvastatin, about half as often as the typical New York prescriber of it (73). Medicare paid $4.52 per fill, versus $8.04 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 New York prescribers
Karen Rivas wrote 41 prescriptions for Metoprolol Succinate, about 33% as often as the typical New York prescriber of it (126). Medicare paid $12.64 per fill, versus $14.99 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
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 New York prescribers
Karen Rivas wrote 39 prescriptions for Rosuvastatin Calcium, about 32% as often as the typical New York prescriber of it (124). Medicare paid $14.97 per fill, versus $14.37 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 New York prescribers
Karen Rivas wrote 38 prescriptions for Meloxicam, about 71% as often as the typical New York prescriber of it (53). Medicare paid $3.24 per fill, versus $3.65 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 New York prescribers
Karen Rivas wrote 36 prescriptions for Levothyroxine Sodium, about 27% as often as the typical New York prescriber of it (133). Medicare paid $14.67 per fill, versus $13.15 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
Clotrimazole is used to treat skin infections such as athlete's foot, jock itch, ringworm, and other fungal skin infections (candidiasis).
Compared with New York prescribers
Karen Rivas wrote 34 prescriptions for Clotrimazole, about 61% as often as the typical New York prescriber of it (56). Medicare paid $15.22 per fill, versus $27.94 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Compared with New York prescribers
Karen Rivas wrote 31 prescriptions for Alcohol Prep Pads, about 60% as often as the typical New York prescriber of it (51). Medicare paid $5.53 per fill, versus $19.43 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
Ibuprofen is used to relieve pain from various conditions such as headache, dental pain, menstrual cramps, muscle aches, or arthritis.
Compared with New York prescribers
Karen Rivas wrote 31 prescriptions for Ibuprofen, about 81% as often as the typical New York prescriber of it (38). Medicare paid $3.72 per fill, versus $5.66 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 New York prescribers
Karen Rivas wrote 30 prescriptions for Nifedipine Er, about 74% as often as the typical New York prescriber of it (41). Medicare paid $15.63 per fill, versus $23.72 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
Cyclobenzaprine is used short-term to treat muscle spasms.
Compared with New York prescribers
Karen Rivas wrote 27 prescriptions for Cyclobenzaprine Hcl, about 77% as often as the typical New York prescriber of it (35). Medicare paid $1.21 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
This product is used to treat certain types of heart failure.
Compared with New York prescribers
Karen Rivas wrote 26 prescriptions for Entresto, about half as often as the typical New York prescriber of it (52). Medicare paid $843.38 per fill, versus $1,039.97 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
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 New York prescribers
Karen Rivas wrote 25 prescriptions for Pioglitazone Hcl, about half as often as the typical New York prescriber of it (42). Medicare paid $9.53 per fill, versus $11.04 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
Ketoconazole is used to treat skin infections such as athlete's foot, jock itch, ringworm, and certain kinds of dandruff.
Compared with New York prescribers
Karen Rivas wrote 24 prescriptions for Ketoconazole, about 39% as often as the typical New York prescriber of it (61). Medicare paid $12.68 per fill, versus $26.96 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
Semaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with New York prescribers
Karen Rivas wrote 23 prescriptions for Ozempic, about 36% as often as the typical New York prescriber of it (63). Medicare paid $915.90 per fill, versus $1,284.03 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 drug is used to treat high blood pressure.
Compared with New York prescribers
Karen Rivas wrote 23 prescriptions for Valsartan-Hydrochlorothiazide, about 75% as often as the typical New York prescriber of it (31). Medicare paid $20.59 per fill, versus $30.22 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 New York prescribers
Karen Rivas wrote 22 prescriptions for Alendronate Sodium, about half as often as the typical New York prescriber of it (52). Medicare paid $4.65 per fill, versus $7.76 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 medication is used to treat depression.
Compared with New York prescribers
Karen Rivas wrote 22 prescriptions for Mirtazapine, about 40% as often as the typical New York prescriber of it (54). Medicare paid $22.51 per fill, versus $17.32 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 New York prescribers
Karen Rivas wrote 21 prescriptions for Basaglar Kwikpen U-100, about half as often as the typical New York prescriber of it (36). Medicare paid $256.86 per fill, versus $324.48 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
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with New York prescribers
Karen Rivas wrote 21 prescriptions for Pantoprazole Sodium, about 30% as often as the typical New York prescriber of it (70). Medicare paid $8.32 per fill, versus $11.79 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
This medication is used to relieve nasal symptoms such as runny/itching/stuffy nose, sneezing, and post-nasal drip caused by allergies or other conditions.
Compared with New York prescribers
Karen Rivas wrote 20 prescriptions for Azelastine Hcl, about 34% as often as the typical New York prescriber of it (58). Medicare paid $11.65 per fill, versus $19.79 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
Baclofen is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury/disease).
Compared with New York prescribers
Karen Rivas wrote 20 prescriptions for Baclofen, about half as often as the typical New York prescriber of it (40). Medicare paid $7.94 per fill, versus $17.60 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
Finasteride is used to shrink an enlarged prostate (benign prostatic hyperplasia or BPH) in adult men.
Compared with New York prescribers
Karen Rivas wrote 20 prescriptions for Finasteride, about 31% as often as the typical New York prescriber of it (64). Medicare paid $9.44 per fill, versus $11.69 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
Memantine is used to treat moderate to severe confusion (dementia) related to Alzheimer's disease.
Compared with New York prescribers
Karen Rivas wrote 20 prescriptions for Memantine Hcl, about 32% as often as the typical New York prescriber of it (62). Medicare paid $12.40 per fill, versus $26.68 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
Bisoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with New York prescribers
Karen Rivas wrote 19 prescriptions for Bisoprolol Fumarate, about half as often as the typical New York prescriber of it (33). Medicare paid $20.92 per fill, versus $27.35 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
Valsartan is used to treat high blood pressure and heart failure.
Compared with New York prescribers
Karen Rivas wrote 19 prescriptions for Valsartan, about half as often as the typical New York prescriber of it (41). Medicare paid $23.16 per fill, versus $26.15 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
Carvedilol is used to treat high blood pressure and heart failure.
Compared with New York prescribers
Karen Rivas wrote 18 prescriptions for Carvedilol, about 33% as often as the typical New York prescriber of it (54). Medicare paid $6.66 per fill, versus $8.29 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
This drug is used to treat high blood pressure.
Compared with New York prescribers
Karen Rivas wrote 18 prescriptions for Losartan-Hydrochlorothiazide, about 40% as often as the typical New York prescriber of it (45). Medicare paid $16.89 per fill, versus $16.11 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 New York prescribers
Karen Rivas wrote 18 prescriptions for Pravastatin Sodium, about half as often as the typical New York prescriber of it (42). Medicare paid $12.75 per fill, versus $13.78 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 a variety of inflamed fungal skin infections such as ringworm, athlete's foot, and jock itch.
Compared with New York prescribers
Karen Rivas wrote 17 prescriptions for Clotrimazole-Betamethasone, about half as often as the typical New York prescriber of it (34). Medicare paid $19.85 per fill, versus $22.58 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 New York prescribers
Karen Rivas wrote 17 prescriptions for Escitalopram Oxalate, about 29% as often as the typical New York prescriber of it (58). Medicare paid $4.59 per fill, versus $10.03 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 medication is used to treat a variety of skin conditions (such as insect bites, poison oak/ivy, eczema, dermatitis, allergies, rash, itching of the outer female genitals, anal itching).
Compared with New York prescribers
Karen Rivas wrote 17 prescriptions for Hydrocortisone, about half as often as the typical New York prescriber of it (33). Medicare paid $7.36 per fill, versus $19.76 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
Sitagliptin/metformin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with New York prescribers
Karen Rivas wrote 16 prescriptions for Janumet Xr, about 63% as often as the typical New York prescriber of it (26). Medicare paid $690.50 per fill, versus $833.56 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
See also Warning section.
Compared with New York prescribers
Karen Rivas wrote 16 prescriptions for Linzess, about 30% as often as the typical New York prescriber of it (54). Medicare paid $569.69 per fill, versus $683.33 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 New York prescribers
Karen Rivas wrote 16 prescriptions for Metformin Hcl Er, about 28% as often as the typical New York prescriber of it (58). Medicare paid $5.85 per fill, versus $10.86 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
This medication is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury).
Compared with New York prescribers
Karen Rivas wrote 16 prescriptions for Tizanidine Hcl, about 39% as often as the typical New York prescriber of it (41). Medicare paid $5.74 per fill, versus $10.91 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
Cinacalcet is used to treat increased amounts of a certain hormone (parathyroid) in people with long-term kidney disease who are on dialysis.
Compared with New York prescribers
Karen Rivas wrote 15 prescriptions for Cinacalcet Hcl, about half as often as the typical New York prescriber of it (27). Medicare paid $131.79 per fill, versus $412.11 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 New York prescribers
Karen Rivas wrote 15 prescriptions for Furosemide, about 22% as often as the typical New York prescriber of it (70). Medicare paid $4.00 per fill, versus $4.82 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 a variety of skin conditions (such as eczema, dermatitis, allergies, rash).
Compared with New York prescribers
Karen Rivas wrote 14 prescriptions for Triamcinolone Acetonide, about 32% as often as the typical New York prescriber of it (44). Medicare paid $9.29 per fill, versus $15.21 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
Azithromycin is used to treat a wide variety of bacterial infections.
Compared with New York prescribers
Karen Rivas wrote 13 prescriptions for Azithromycin, about 34% as often as the typical New York prescriber of it (38). Medicare paid $3.32 per fill, versus $4.76 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
Levocetirizine is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes/nose, and sneezing.
Compared with New York prescribers
Karen Rivas wrote 13 prescriptions for Levocetirizine Dihydrochloride, about 37% as often as the typical New York prescriber of it (35). Medicare paid $3.56 per fill, versus $11.62 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 treat high blood pressure (hypertension).
Compared with New York prescribers
Karen Rivas wrote 13 prescriptions for Olmesartan-Amlodipine-Hctz, about 42% as often as the typical New York prescriber of it (31). Medicare paid $126.15 per fill, versus $91.67 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
This product is a combination of two drugs: a calcium channel blocker (amlodipine) and an ACE inhibitor (benazepril).
Compared with New York prescribers
Karen Rivas wrote 12 prescriptions for Amlodipine Besylate-Benazepril, about 38% as often as the typical New York prescriber of it (31). Medicare paid $7.89 per fill, versus $16.96 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
Bumetanide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease.
Compared with New York prescribers
Karen Rivas wrote 12 prescriptions for Bumetanide, about 35% as often as the typical New York prescriber of it (34). Medicare paid $15.69 per fill, versus $30.46 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 symptoms of dry mouth due to a certain immune disease (Sjogren's syndrome).
Compared with New York prescribers
Karen Rivas wrote 12 prescriptions for Cevimeline Hcl, about half as often as the typical New York prescriber of it (22). Medicare paid $134.90 per fill, versus $149.05 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
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 New York prescribers
Karen Rivas wrote 12 prescriptions for Eliquis, about 14% as often as the typical New York prescriber of it (86). Medicare paid $946.39 per fill, versus $874.81 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 New York prescribers
Karen Rivas wrote 12 prescriptions for Ezetimibe, about 22% as often as the typical New York prescriber of it (54). Medicare paid $14.89 per fill, versus $25.74 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
Fluconazole is used to treat vaginal yeast infections.
Compared with New York prescribers
Karen Rivas wrote 12 prescriptions for Fluconazole, about half as often as the typical New York prescriber of it (22). Medicare paid $9.75 per fill, versus $12.21 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Compared with New York prescribers
Karen Rivas wrote 12 prescriptions for Single Use Swab, about 40% as often as the typical New York prescriber of it (30). Medicare paid $2.02 per fill, versus $2.52 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
Linagliptin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with New York prescribers
Karen Rivas wrote 12 prescriptions for Tradjenta, about 35% as often as the typical New York prescriber of it (34). Medicare paid $731.75 per fill, versus $729.82 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 product is used to control and prevent symptoms (such as wheezing and shortness of breath) caused by asthma and ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with New York prescribers
Karen Rivas wrote 12 prescriptions for Trelegy Ellipta, about 20% as often as the typical New York prescriber of it (61). Medicare paid $1,174.81 per fill, versus $832.82 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
Isosorbide mononitrate is used to prevent chest pain (angina) in patients with a certain heart condition (coronary artery disease).
Compared with New York prescribers
Karen Rivas wrote 11 prescriptions for Isosorbide Mononitrate Er, about 30% as often as the typical New York prescriber of it (36). Medicare paid $10.27 per fill, versus $12.21 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
Latanoprost is used to treat high pressure inside the eye due to glaucoma (open angle type) or other eye diseases (such as ocular hypertension).
Compared with New York prescribers
Karen Rivas wrote 11 prescriptions for Latanoprost, about 7% as often as the typical New York prescriber of it (159). Medicare paid $5.36 per fill, versus $11.29 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 Rivas’s prescriptions
What does Karen Rivas prescribe most?
In 2024 Medicare Part D data, Karen Rivas's most prescribed medications were Atorvastatin Calcium (227), Metformin Hcl (137) and Amlodipine Besylate (123).
How does Karen Rivas's prescribing compare with other New York prescribers?
Of the 72 medications with a state comparison, Karen Rivas prescribes 4 more often than the typical New York prescriber, 17 about as often and 51 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Karen Rivas 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 New York 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.
