DR. DARRYL JON GIAMBALVO DO
Prescription History 1386273621
Family Medicine in Bloomingdale, IL
What does Dr. Giambalvo prescribe?
In 2024, Dr. Giambalvo wrote 1,072 Medicare prescriptions for 38 medications. The most prescribed was Atorvastatin Calcium, with 104 prescriptions for 43 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. Giambalvo prescribes.
Medications 38 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 Illinois 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 Illinois prescribers
Dr. Giambalvo wrote 104 prescriptions for Atorvastatin Calcium, about half as often as the typical Illinois prescriber of it (208). Medicare paid $7.15 per fill, versus $9.37 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with Illinois prescribers
Dr. Giambalvo wrote 66 prescriptions for Amlodipine Besylate, about half as often as the typical Illinois prescriber of it (146). Medicare paid $5.18 per fill, versus $6.68 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
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 Illinois prescribers
Dr. Giambalvo wrote 62 prescriptions for Rosuvastatin Calcium, about half as often as the typical Illinois prescriber of it (105). Medicare paid $10.35 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
Lisinopril is used to treat high blood pressure.
Compared with Illinois prescribers
Dr. Giambalvo wrote 48 prescriptions for Lisinopril, about 40% as often as the typical Illinois prescriber of it (120). Medicare paid $4.53 per fill, versus $7.00 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
Empagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Illinois prescribers
Dr. Giambalvo wrote 40 prescriptions for Jardiance, about 71% as often as the typical Illinois prescriber of it (56). Medicare paid $1,069.20 per fill, versus $1,039.71 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
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 Illinois prescribers
Dr. Giambalvo wrote 40 prescriptions for Prednisone, about 87% as often as the typical Illinois prescriber of it (46). Medicare paid $2.27 per fill, versus $3.88 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
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with Illinois prescribers
Dr. Giambalvo wrote 39 prescriptions for Losartan Potassium, about 34% as often as the typical Illinois prescriber of it (115). Medicare paid $6.95 per fill, versus $9.41 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Illinois prescribers
Dr. Giambalvo wrote 38 prescriptions for Levothyroxine Sodium, about 24% as often as the typical Illinois prescriber of it (156). Medicare paid $9.84 per fill, versus $10.46 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
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with Illinois prescribers
Dr. Giambalvo wrote 33 prescriptions for Tamsulosin Hcl, about 35% as often as the typical Illinois prescriber of it (94). Medicare paid $17.45 per fill, versus $14.59 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 relieve moderate to severe pain.
Compared with Illinois prescribers
Dr. Giambalvo wrote 32 prescriptions for Hydrocodone-Acetaminophen, about half as often as the typical Illinois prescriber of it (71). Medicare paid $21.98 per fill, versus $20.03 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
Irbesartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with Illinois prescribers
Dr. Giambalvo wrote 32 prescriptions for Irbesartan, about as often as the typical Illinois prescriber of it (34). Medicare paid $9.73 per fill, versus $17.40 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
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 Illinois prescribers
Dr. Giambalvo wrote 31 prescriptions for Albuterol Sulfate Hfa, about half as often as the typical Illinois prescriber of it (61). Medicare paid $28.86 per fill, versus $31.97 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Illinois prescribers
Dr. Giambalvo wrote 31 prescriptions for Metformin Hcl, about 30% as often as the typical Illinois prescriber of it (102). Medicare paid $7.61 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
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with Illinois prescribers
Dr. Giambalvo wrote 29 prescriptions for Pantoprazole Sodium, about 35% as often as the typical Illinois prescriber of it (83). Medicare paid $8.11 per fill, versus $12.56 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
Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with Illinois prescribers
Dr. Giambalvo wrote 28 prescriptions for Omeprazole, about 29% as often as the typical Illinois prescriber of it (96). Medicare paid $11.75 per fill, versus $11.25 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
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 Illinois prescribers
Dr. Giambalvo wrote 27 prescriptions for Eliquis, about 29% as often as the typical Illinois prescriber of it (94). Medicare paid $677.50 per fill, versus $848.57 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
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 Illinois prescribers
Dr. Giambalvo wrote 27 prescriptions for Fluticasone Propionate, about half as often as the typical Illinois prescriber of it (49). Medicare paid $15.90 per fill, versus $14.22 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
This medication is used to treat high blood pressure.
Compared with Illinois prescribers
Dr. Giambalvo wrote 27 prescriptions for Hydrochlorothiazide, about 36% as often as the typical Illinois prescriber of it (76). Medicare paid $3.19 per fill, versus $4.15 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Illinois prescribers
Dr. Giambalvo wrote 27 prescriptions for Metformin Hcl Er, about half as often as the typical Illinois prescriber of it (55). Medicare paid $6.09 per fill, versus $9.22 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
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 Illinois prescribers
Dr. Giambalvo wrote 26 prescriptions for Famotidine, about half as often as the typical Illinois prescriber of it (54). Medicare paid $6.30 per fill, versus $12.03 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 (hypertension).
Compared with Illinois prescribers
Dr. Giambalvo wrote 23 prescriptions for Irbesartan-Hydrochlorothiazide, about as often as the typical Illinois prescriber of it (22). Medicare paid $15.34 per fill, versus $18.97 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
Dapagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Illinois prescribers
Dr. Giambalvo wrote 22 prescriptions for Farxiga, about half as often as the typical Illinois prescriber of it (41). Medicare paid $996.36 per fill, versus $919.06 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with Illinois prescribers
Dr. Giambalvo wrote 22 prescriptions for Gabapentin, about 25% as often as the typical Illinois prescriber of it (87). Medicare paid $13.48 per fill, versus $15.83 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
Semaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Illinois prescribers
Dr. Giambalvo wrote 22 prescriptions for Ozempic, about 40% as often as the typical Illinois prescriber of it (55). Medicare paid $1,209.01 per fill, versus $1,303.69 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
Ezetimibe is used along with a low cholesterol/low fat diet and exercise to help lower cholesterol in the blood.
Compared with Illinois prescribers
Dr. Giambalvo wrote 18 prescriptions for Ezetimibe, about 36% as often as the typical Illinois prescriber of it (50). Medicare paid $18.28 per fill, versus $23.83 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
This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with Illinois prescribers
Dr. Giambalvo wrote 17 prescriptions for Metoprolol Succinate, about 14% as often as the typical Illinois prescriber of it (125). Medicare paid $13.15 per fill, versus $14.27 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
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 Illinois prescribers
Dr. Giambalvo wrote 17 prescriptions for Simvastatin, about 23% as often as the typical Illinois prescriber of it (75). Medicare paid $5.68 per fill, versus $8.10 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
Methylprednisolone is used to treat conditions such as arthritis, blood disorders, severe allergic reactions, certain cancers, eye conditions, skin/kidney/intestinal/lung diseases, and immune system disorders.
Compared with Illinois prescribers
Dr. Giambalvo wrote 16 prescriptions for Methylprednisolone, about half as often as the typical Illinois prescriber of it (34). Medicare paid $6.54 per fill, versus $5.95 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 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 Illinois prescribers
Dr. Giambalvo wrote 16 prescriptions for Trelegy Ellipta, about 27% as often as the typical Illinois prescriber of it (58). Medicare paid $567.43 per fill, versus $847.43 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
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 Illinois prescribers
Dr. Giambalvo wrote 14 prescriptions for Clopidogrel, about 23% as often as the typical Illinois prescriber of it (62). Medicare paid $6.39 per fill, versus $11.09 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
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with Illinois prescribers
Dr. Giambalvo wrote 14 prescriptions for Escitalopram Oxalate, about 23% as often as the typical Illinois prescriber of it (60). Medicare paid $11.16 per fill, versus $12.18 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 Illinois prescribers
Dr. Giambalvo wrote 14 prescriptions for Glimepiride, about 32% as often as the typical Illinois prescriber of it (43). Medicare paid $5.06 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
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 Illinois prescribers
Dr. Giambalvo wrote 13 prescriptions for Pravastatin Sodium, about 25% as often as the typical Illinois prescriber of it (52). Medicare paid $14.22 per fill, versus $12.95 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 a wide variety of bacterial infections, including those that cause acne.
Compared with Illinois prescribers
Dr. Giambalvo wrote 12 prescriptions for Doxycycline Hyclate, about 40% as often as the typical Illinois prescriber of it (30). Medicare paid $10.62 per fill, versus $12.92 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 Illinois prescribers
Dr. Giambalvo wrote 12 prescriptions for Montelukast Sodium, about 20% as often as the typical Illinois prescriber of it (59). Medicare paid $8.83 per fill, versus $10.66 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
Allopurinol is used to treat gout and certain types of kidney stones.
Compared with Illinois prescribers
Dr. Giambalvo wrote 11 prescriptions for Allopurinol, about 20% as often as the typical Illinois prescriber of it (56). Medicare paid $9.02 per fill, versus $9.73 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 Illinois prescribers
Dr. Giambalvo wrote 11 prescriptions for Duloxetine Hcl, about 21% as often as the typical Illinois prescriber of it (53). Medicare paid $15.43 per fill, versus $21.99 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
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Illinois prescribers
Dr. Giambalvo wrote 11 prescriptions for Glipizide Er, about 30% as often as the typical Illinois prescriber of it (37). Medicare paid $10.68 per fill, versus $13.55 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. Giambalvo’s prescriptions
What does Dr. Giambalvo prescribe most?
In 2024 Medicare Part D data, Dr. Giambalvo's most prescribed medications were Atorvastatin Calcium (104), Amlodipine Besylate (66) and Rosuvastatin Calcium (62).
How does Dr. Giambalvo's prescribing compare with other Illinois prescribers?
Of the 38 medications with a state comparison, Dr. Giambalvo prescribes 3 about as often than the typical Illinois prescriber and 35 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Giambalvo 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 Illinois 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.
