MYSHELLE R GUARDERAS MSN, APRN, FNP-BC
Prescription History 1992487367
Nurse Practitioner - Family in Methuen, MA
What does Myshelle Guarderas prescribe?
In 2024, Myshelle Guarderas wrote 986 Medicare prescriptions for 35 medications. The most prescribed was Metformin Hcl Er (metformin hcl), with 91 prescriptions for 38 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 Myshelle Guarderas prescribes.
Medications 35 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 Massachusetts prescribers.
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 Massachusetts prescribers
Myshelle Guarderas wrote 91 prescriptions for Metformin Hcl Er, about 1.8 times as often as the typical Massachusetts prescriber of it (52). Medicare paid $8.31 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
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 Massachusetts prescribers
Myshelle Guarderas wrote 89 prescriptions for Atorvastatin Calcium, about half as often as the typical Massachusetts prescriber of it (188). Medicare paid $8.37 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
Lisinopril is used to treat high blood pressure.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 72 prescriptions for Lisinopril, about half as often as the typical Massachusetts prescriber of it (123). Medicare paid $5.65 per fill, versus $8.13 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
Dulaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 66 prescriptions for Trulicity, about 1.3 times as often as the typical Massachusetts prescriber of it (49). Medicare paid $1,084.37 per fill, versus $1,207.77 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
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 65 prescriptions for Losartan Potassium, about 72% as often as the typical Massachusetts prescriber of it (90). Medicare paid $5.46 per fill, versus $11.50 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 Massachusetts prescribers
Myshelle Guarderas wrote 60 prescriptions for Jardiance, about 1.2 times as often as the typical Massachusetts prescriber of it (49). Medicare paid $926.74 per fill, versus $1,010.43 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
This medication is used to treat high blood pressure.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 45 prescriptions for Hydrochlorothiazide, about 66% as often as the typical Massachusetts prescriber of it (68). Medicare paid $4.31 per fill, versus $4.39 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 Massachusetts prescribers
Myshelle Guarderas wrote 34 prescriptions for Amlodipine Besylate, about 27% as often as the typical Massachusetts prescriber of it (126). Medicare paid $4.28 per fill, versus $7.46 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
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 Massachusetts prescribers
Myshelle Guarderas wrote 32 prescriptions for Famotidine, about 70% as often as the typical Massachusetts prescriber of it (46). Medicare paid $17.98 per fill, versus $14.29 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 31 prescriptions for Metformin Hcl, about half as often as the typical Massachusetts prescriber of it (73). Medicare paid $6.20 per fill, versus $9.67 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
Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 27 prescriptions for Omeprazole, about 28% as often as the typical Massachusetts prescriber of it (97). Medicare paid $13.49 per fill, versus $15.75 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 Massachusetts prescribers
Myshelle Guarderas wrote 21 prescriptions for Gabapentin, about 26% as often as the typical Massachusetts prescriber of it (80). Medicare paid $13.08 per fill, versus $14.49 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
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 Massachusetts prescribers
Myshelle Guarderas wrote 21 prescriptions for Simvastatin, about 28% as often as the typical Massachusetts prescriber of it (75). Medicare paid $8.33 per fill, versus $9.82 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
Dapagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 19 prescriptions for Farxiga, about half as often as the typical Massachusetts prescriber of it (38). Medicare paid $632.53 per fill, versus $908.11 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
Meclizine is an antihistamine that is used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 19 prescriptions for Meclizine Hcl, about 75% as often as the typical Massachusetts prescriber of it (25). Medicare paid $9.69 per fill, versus $8.35 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 18 prescriptions for Alcohol Prep Pads, about 72% as often as the typical Massachusetts prescriber of it (25). Medicare paid $2.42 per fill, versus $19.54 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 Massachusetts prescribers
Myshelle Guarderas wrote 18 prescriptions for Fluticasone Propionate, about 41% as often as the typical Massachusetts prescriber of it (44). Medicare paid $19.60 per fill, versus $16.98 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 Massachusetts prescribers
Myshelle Guarderas wrote 18 prescriptions for Sertraline Hcl, about 29% as often as the typical Massachusetts prescriber of it (62). Medicare paid $3.74 per fill, versus $10.02 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
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 17 prescriptions for Glipizide Er, about half as often as the typical Massachusetts prescriber of it (34). Medicare paid $3.68 per fill, versus $17.43 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
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 Massachusetts prescribers
Myshelle Guarderas wrote 16 prescriptions for Albuterol Sulfate Hfa, about 28% as often as the typical Massachusetts prescriber of it (58). Medicare paid $17.32 per fill, versus $31.48 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
Chlorthalidone is used to treat high blood pressure (hypertension).
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 16 prescriptions for Chlorthalidone, about half as often as the typical Massachusetts prescriber of it (27). Medicare paid $14.43 per fill, versus $21.30 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 Massachusetts prescribers
Myshelle Guarderas wrote 16 prescriptions for Metoprolol Succinate, about 14% as often as the typical Massachusetts prescriber of it (112). Medicare paid $10.72 per fill, versus $18.15 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
Semaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 16 prescriptions for Ozempic, about 31% as often as the typical Massachusetts prescriber of it (51). Medicare paid $946.17 per fill, versus $1,217.01 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 Massachusetts prescribers
Myshelle Guarderas wrote 16 prescriptions for Triamcinolone Acetonide, about half as often as the typical Massachusetts prescriber of it (35). Medicare paid $4.58 per fill, versus $10.62 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
Valsartan is used to treat high blood pressure and heart failure.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 16 prescriptions for Valsartan, about half as often as the typical Massachusetts prescriber of it (34). Medicare paid $13.26 per fill, versus $36.63 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
Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 14 prescriptions for Lantus Solostar, about 35% as often as the typical Massachusetts prescriber of it (40). Medicare paid $51.41 per fill, versus $121.42 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 Massachusetts prescribers
Myshelle Guarderas wrote 14 prescriptions for Rosuvastatin Calcium, about 18% as often as the typical Massachusetts prescriber of it (79). Medicare paid $8.81 per fill, versus $28.16 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
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 Massachusetts prescribers
Myshelle Guarderas wrote 13 prescriptions for Furosemide, about 18% as often as the typical Massachusetts prescriber of it (72). Medicare paid $1.06 per fill, versus $5.71 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
Glimepiride is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 13 prescriptions for Glimepiride, about 41% as often as the typical Massachusetts prescriber of it (32). Medicare paid $8.91 per fill, versus $10.08 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 an antibiotic used to treat bladder infections (acute cystitis).
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 13 prescriptions for Nitrofurantoin Mono-Macro, about half as often as the typical Massachusetts prescriber of it (24). Medicare paid $14.60 per fill, versus $11.54 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 Massachusetts prescribers
Myshelle Guarderas wrote 12 prescriptions for Amitriptyline Hcl, about half as often as the typical Massachusetts prescriber of it (25). Medicare paid $13.90 per fill, versus $15.57 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
Carvedilol is used to treat high blood pressure and heart failure.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 12 prescriptions for Carvedilol, about 28% as often as the typical Massachusetts prescriber of it (43). Medicare paid $16.99 per fill, versus $10.97 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 used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder).
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 12 prescriptions for Fluoxetine Hcl, about 30% as often as the typical Massachusetts prescriber of it (40). Medicare paid $5.48 per fill, versus $11.95 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 a beta blocker used to treat high blood pressure, irregular heartbeats, shaking (tremors), and other conditions as determined by your doctor.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 12 prescriptions for Propranolol Hcl Er, about half as often as the typical Massachusetts prescriber of it (21). Medicare paid $14.04 per fill, versus $42.54 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
Beclomethasone is used to prevent and control symptoms (wheezing and shortness of breath) caused by asthma.
Compared with Massachusetts prescribers
Myshelle Guarderas wrote 12 prescriptions for Qvar Redihaler, about 68% as often as the typical Massachusetts prescriber of it (18). Medicare paid $286.49 per fill, versus $313.39 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Myshelle Guarderas’s prescriptions
What does Myshelle Guarderas prescribe most?
In 2024 Medicare Part D data, Myshelle Guarderas's most prescribed medications were Metformin Hcl Er (91), Atorvastatin Calcium (89) and Lisinopril (72).
How does Myshelle Guarderas's prescribing compare with other Massachusetts prescribers?
Of the 35 medications with a state comparison, Myshelle Guarderas prescribes 2 more often than the typical Massachusetts prescriber, 1 about as often and 32 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Myshelle Guarderas 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 Massachusetts 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.
