JOHN NICASIO DO
Prescription History 1982803003
Internal Medicine - Endocrinology, Diabetes & Metabolism in Northampton, MA
What does Dr. Nicasio prescribe?
In 2024, Dr. Nicasio wrote 3,312 Medicare prescriptions for 45 medications. The most prescribed was Alendronate Sodium, with 375 prescriptions for 124 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 Dr. Nicasio prescribes.
Medications 45 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
Alendronate is used to prevent and treat certain types of bone loss (osteoporosis) in adults.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 375 prescriptions for Alendronate Sodium, about 8.8 times as often as the typical Massachusetts prescriber of it (42). Medicare paid $10.93 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Massachusetts prescribers
Dr. Nicasio wrote 360 prescriptions for Levothyroxine Sodium, about 2.9 times as often as the typical Massachusetts prescriber of it (123). Medicare paid $11.62 per fill, versus $10.45 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 Massachusetts prescribers
Dr. Nicasio wrote 237 prescriptions for Pioglitazone Hcl, about 8.4 times as often as the typical Massachusetts prescriber of it (28). Medicare paid $18.17 per fill, versus $17.28 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
Dr. Nicasio wrote 216 prescriptions for Jardiance, about 4.4 times as often as the typical Massachusetts prescriber of it (49). Medicare paid $1,352.21 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
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
Dr. Nicasio wrote 216 prescriptions for Trulicity, about 4.4 times as often as the typical Massachusetts prescriber of it (49). Medicare paid $1,868.57 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 205 prescriptions for Metformin Hcl Er, about 4 times as often as the typical Massachusetts prescriber of it (52). Medicare paid $12.49 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
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
Dr. Nicasio wrote 203 prescriptions for Ozempic, about 4 times as often as the typical Massachusetts prescriber of it (51). Medicare paid $1,707.07 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
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
Dr. Nicasio wrote 112 prescriptions for Rosuvastatin Calcium, about 1.4 times as often as the typical Massachusetts prescriber of it (79). Medicare paid $39.69 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
Insulin degludec is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 112 prescriptions for Tresiba Flextouch U-100, about 3.3 times as often as the typical Massachusetts prescriber of it (34). Medicare paid $927.20 per fill, versus $644.36 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
Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 94 prescriptions for Lantus Solostar, about 2.3 times as often as the typical Massachusetts prescriber of it (40). Medicare paid $137.03 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 94 prescriptions for Metformin Hcl, about 1.3 times as often as the typical Massachusetts prescriber of it (73). Medicare paid $11.72 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Massachusetts prescribers
Dr. Nicasio wrote 75 prescriptions for Synthroid, about 2.5 times as often as the typical Massachusetts prescriber of it (30). Medicare paid $74.87 per fill, versus $59.24 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
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
Dr. Nicasio wrote 67 prescriptions for Atorvastatin Calcium, about 36% as often as the typical Massachusetts prescriber of it (188). Medicare paid $14.90 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
Ezetimibe is used along with a low cholesterol/low fat diet and exercise to help lower cholesterol in the blood.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 67 prescriptions for Ezetimibe, about 1.6 times as often as the typical Massachusetts prescriber of it (41). Medicare paid $46.62 per fill, versus $40.52 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
Methimazole is used to treat overactive thyroid (hyperthyroidism).
Compared with Massachusetts prescribers
Dr. Nicasio wrote 64 prescriptions for Methimazole, about 1.6 times as often as the typical Massachusetts prescriber of it (39). Medicare paid $14.72 per fill, versus $11.78 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
Dr. Nicasio wrote 59 prescriptions for Ultra-Fine Mini Pen Needle, about 2.2 times as often as the typical Massachusetts prescriber of it (26). Medicare paid $101.12 per fill, versus $91.93 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
Dr. Nicasio wrote 58 prescriptions for Ultra-Fine Short Pen Needle, about 2.1 times as often as the typical Massachusetts prescriber of it (27). Medicare paid $91.04 per fill, versus $90.61 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 in men who do not make enough of a natural substance called testosterone.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 55 prescriptions for Testosterone Cypionate, about 1.5 times as often as the typical Massachusetts prescriber of it (36). Medicare paid $17.30 per fill, versus $23.80 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 medicated gel contains testosterone.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 53 prescriptions for Testosterone, about 1.7 times as often as the typical Massachusetts prescriber of it (30). Medicare paid $142.43 per fill, versus $140.94 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 45 prescriptions for Nano 2nd Gen Pen Needle, about as often as the typical Massachusetts prescriber of it (41). Medicare paid $109.27 per fill, versus $95.64 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
Insulin aspart is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 45 prescriptions for Novolog Flexpen, about 1.3 times as often as the typical Massachusetts prescriber of it (33). Medicare paid $241.09 per fill, versus $217.45 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
Dr. Nicasio wrote 44 prescriptions for Basaglar Kwikpen U-100, about 1.4 times as often as the typical Massachusetts prescriber of it (31). Medicare paid $566.71 per fill, versus $412.05 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
Insulin lispro is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 40 prescriptions for Humalog Kwikpen U-100, about 1.2 times as often as the typical Massachusetts prescriber of it (34). Medicare paid $255.16 per fill, versus $252.24 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
Tirzepatide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 37 prescriptions for Mounjaro, about 80% as often as the typical Massachusetts prescriber of it (46). Medicare paid $1,148.21 per fill, versus $1,225.06 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
Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 34 prescriptions for Toujeo Solostar, about 1.5 times as often as the typical Massachusetts prescriber of it (23). Medicare paid $906.37 per fill, versus $737.27 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 aspart is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 30 prescriptions for Fiasp Flextouch, about as often as the typical Massachusetts prescriber of it (28). Medicare paid $847.00 per fill, versus $867.45 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
Concentrated insulin regular is used with a proper diet and exercise program to control high blood sugar in people with diabetes who require large doses of insulin (more than 200 units per day).
Compared with Massachusetts prescribers
Dr. Nicasio wrote 27 prescriptions for Humulin R U-500 Kwikpen, about as often as the typical Massachusetts prescriber of it (27). Medicare paid $1,063.29 per fill, versus $1,611.82 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
Dr. Nicasio wrote 26 prescriptions for Farxiga, about 68% as often as the typical Massachusetts prescriber of it (38). Medicare paid $1,002.60 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
Calcitriol is a man-made active form of vitamin D.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 23 prescriptions for Calcitriol, about half as often as the typical Massachusetts prescriber of it (42). Medicare paid $60.16 per fill, versus $20.21 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
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 Massachusetts prescribers
Dr. Nicasio wrote 22 prescriptions for Cinacalcet Hcl, about 79% as often as the typical Massachusetts prescriber of it (28). Medicare paid $235.40 per fill, versus $287.61 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
Insulin aspart is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 20 prescriptions for Novolog, about 85% as often as the typical Massachusetts prescriber of it (23). Medicare paid $165.39 per fill, versus $223.64 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
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 Massachusetts prescribers
Dr. Nicasio wrote 19 prescriptions for Hydrocortisone, about 70% as often as the typical Massachusetts prescriber of it (27). Medicare paid $42.10 per fill, versus $15.44 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
Canagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 17 prescriptions for Invokana, about as often as the typical Massachusetts prescriber of it (15). Medicare paid $1,361.85 per fill, versus $746.25 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
Insulin degludec is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 17 prescriptions for Tresiba Flextouch U-200, about half as often as the typical Massachusetts prescriber of it (30). Medicare paid $1,808.00 per fill, versus $1,129.37 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
Dr. Nicasio wrote 17 prescriptions for V-Go 20, about 1.2 times as often as the typical Massachusetts prescriber of it (14). Medicare paid $683.63 per fill, versus $553.11 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
Dr. Nicasio wrote 15 prescriptions for Insulin Syringe, about 80% as often as the typical Massachusetts prescriber of it (19). Medicare paid $43.94 per fill, versus $59.02 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
Dr. Nicasio wrote 14 prescriptions for Cequr Simplicity, about 80% as often as the typical Massachusetts prescriber of it (17). Medicare paid $699.62 per fill, versus $605.93 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
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
Dr. Nicasio wrote 14 prescriptions for Rybelsus, about 62% as often as the typical Massachusetts prescriber of it (23). Medicare paid $1,254.15 per fill, versus $1,400.76 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
Liothyronine is used to treat an underactive thyroid (hypothyroidism).
Compared with Massachusetts prescribers
Dr. Nicasio wrote 13 prescriptions for Liothyronine Sodium, about half as often as the typical Massachusetts prescriber of it (24). Medicare paid $91.16 per fill, versus $49.24 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
Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 13 prescriptions for Toujeo Max Solostar, about half as often as the typical Massachusetts prescriber of it (23). Medicare paid $1,174.16 per fill, versus $1,147.39 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
Dexamethasone is used to treat conditions such as arthritis, blood/hormone disorders, allergic reactions, skin diseases, eye problems, breathing problems, bowel disorders, cancer, and immune system disorders.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 12 prescriptions for Dexamethasone, about half as often as the typical Massachusetts prescriber of it (28). Medicare paid $1.21 per fill, versus $12.34 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 12 prescriptions for Gabapentin, about 15% as often as the typical Massachusetts prescriber of it (80). Medicare paid $23.23 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.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 12 prescriptions for Single Use Swab, about 66% as often as the typical Massachusetts prescriber of it (18). Medicare paid $5.37 per fill, versus $4.05 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
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 11 prescriptions for Losartan Potassium, about 12% as often as the typical Massachusetts prescriber of it (90). Medicare paid $15.88 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.
Compared with Massachusetts prescribers
Dr. Nicasio wrote 11 prescriptions for Omnipod 5 Dexg7g6 Pods (Gen 5), about 38% as often as the typical Massachusetts prescriber of it (29). Medicare paid $591.44 per fill, versus $1,165.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Dr. Nicasio’s prescriptions
What does Dr. Nicasio prescribe most?
In 2024 Medicare Part D data, Dr. Nicasio's most prescribed medications were Alendronate Sodium (375), Levothyroxine Sodium (360) and Pioglitazone Hcl (237).
How does Dr. Nicasio's prescribing compare with other Massachusetts prescribers?
Of the 45 medications with a state comparison, Dr. Nicasio prescribes 21 more often than the typical Massachusetts prescriber, 11 about as often and 13 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Nicasio 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.
