CHARMIAN D SITTAMBALAM MD
Prescription History 1013208461
Internal Medicine - Geriatric Medicine in Baltimore, MD
What does Dr. Sittambalam prescribe?
In 2024, Dr. Sittambalam wrote 3,146 Medicare prescriptions for 69 medications. The most prescribed was Atorvastatin Calcium, with 252 prescriptions for 135 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. Sittambalam prescribes.
Medications 69 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 Maryland 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 Maryland prescribers
Dr. Sittambalam wrote 252 prescriptions for Atorvastatin Calcium, about 1.5 times as often as the typical Maryland prescriber of it (167). Medicare paid $12.60 per fill, versus $12.96 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with Maryland prescribers
Dr. Sittambalam wrote 228 prescriptions for Amlodipine Besylate, about 1.8 times as often as the typical Maryland prescriber of it (130). Medicare paid $5.84 per fill, versus $8.15 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
This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with Maryland prescribers
Dr. Sittambalam wrote 127 prescriptions for Metoprolol Succinate, about 1.3 times as often as the typical Maryland prescriber of it (95). Medicare paid $9.67 per fill, versus $17.16 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
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with Maryland prescribers
Dr. Sittambalam wrote 122 prescriptions for Losartan Potassium, about 1.3 times as often as the typical Maryland prescriber of it (96). Medicare paid $10.85 per fill, versus $11.44 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
Lisinopril is used to treat high blood pressure.
Compared with Maryland prescribers
Dr. Sittambalam wrote 112 prescriptions for Lisinopril, about 1.3 times as often as the typical Maryland prescriber of it (88). Medicare paid $7.79 per fill, versus $8.25 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
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with Maryland prescribers
Dr. Sittambalam wrote 104 prescriptions for Pantoprazole Sodium, about 1.6 times as often as the typical Maryland prescriber of it (65). Medicare paid $9.68 per fill, versus $15.27 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with Maryland prescribers
Dr. Sittambalam wrote 90 prescriptions for Gabapentin, about 1.3 times as often as the typical Maryland prescriber of it (71). Medicare paid $14.97 per fill, versus $15.67 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
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 Maryland prescribers
Dr. Sittambalam wrote 88 prescriptions for Famotidine, about 1.7 times as often as the typical Maryland prescriber of it (50). Medicare paid $11.86 per fill, versus $14.07 statewide.
Volume reflects 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 Maryland prescribers
Dr. Sittambalam wrote 87 prescriptions for Levocetirizine Dihydrochloride, about 2.9 times as often as the typical Maryland prescriber of it (31). Medicare paid $14.11 per fill, versus $18.02 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
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 Maryland prescribers
Dr. Sittambalam wrote 84 prescriptions for Fluticasone Propionate, about 2 times as often as the typical Maryland prescriber of it (42). Medicare paid $16.01 per fill, versus $16.42 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
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 Maryland prescribers
Dr. Sittambalam wrote 81 prescriptions for Furosemide, about 1.3 times as often as the typical Maryland prescriber of it (64). Medicare paid $4.41 per fill, versus $5.77 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
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 Maryland prescribers
Dr. Sittambalam wrote 78 prescriptions for Albuterol Sulfate Hfa, about 1.5 times as often as the typical Maryland prescriber of it (53). Medicare paid $62.64 per fill, versus $29.94 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
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 Maryland prescribers
Dr. Sittambalam wrote 69 prescriptions for Rosuvastatin Calcium, about 72% as often as the typical Maryland prescriber of it (96). Medicare paid $16.48 per fill, versus $22.56 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
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with Maryland prescribers
Dr. Sittambalam wrote 68 prescriptions for Tamsulosin Hcl, about as often as the typical Maryland prescriber of it (71). Medicare paid $10.07 per fill, versus $18.03 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
Donepezil is used to treat confusion (dementia) related to Alzheimer's disease.
Compared with Maryland prescribers
Dr. Sittambalam wrote 57 prescriptions for Donepezil Hcl, about as often as the typical Maryland prescriber of it (53). Medicare paid $8.59 per fill, versus $14.68 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Maryland prescribers
Dr. Sittambalam wrote 57 prescriptions for Metformin Hcl, about 77% as often as the typical Maryland prescriber of it (74). Medicare paid $5.05 per fill, versus $8.72 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Maryland prescribers
Dr. Sittambalam wrote 56 prescriptions for Levothyroxine Sodium, about half as often as the typical Maryland prescriber of it (110). Medicare paid $8.19 per fill, versus $11.67 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 medication is used to treat depression.
Compared with Maryland prescribers
Dr. Sittambalam wrote 55 prescriptions for Mirtazapine, about 1.2 times as often as the typical Maryland prescriber of it (45). Medicare paid $22.73 per fill, versus $21.78 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
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 Maryland prescribers
Dr. Sittambalam wrote 52 prescriptions for Pravastatin Sodium, about as often as the typical Maryland prescriber of it (48). Medicare paid $21.12 per fill, versus $18.60 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
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 Maryland prescribers
Dr. Sittambalam wrote 51 prescriptions for Trelegy Ellipta, about as often as the typical Maryland prescriber of it (54). Medicare paid $1,348.49 per fill, versus $936.01 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 high blood pressure.
Compared with Maryland prescribers
Dr. Sittambalam wrote 50 prescriptions for Hydrochlorothiazide, about 78% as often as the typical Maryland prescriber of it (64). Medicare paid $3.16 per fill, versus $4.79 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
Allopurinol is used to treat gout and certain types of kidney stones.
Compared with Maryland prescribers
Dr. Sittambalam wrote 49 prescriptions for Allopurinol, about 1.2 times as often as the typical Maryland prescriber of it (40). Medicare paid $10.11 per fill, versus $11.44 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
Nifedipine is used alone or in combination with other drugs to treat high blood pressure (hypertension).
Compared with Maryland prescribers
Dr. Sittambalam wrote 48 prescriptions for Nifedipine Er, about 1.5 times as often as the typical Maryland prescriber of it (32). Medicare paid $32.49 per fill, versus $29.98 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
Spironolactone is used to treat high blood pressure and heart failure.
Compared with Maryland prescribers
Dr. Sittambalam wrote 44 prescriptions for Spironolactone, about 1.2 times as often as the typical Maryland prescriber of it (37). Medicare paid $6.39 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
Carvedilol is used to treat high blood pressure and heart failure.
Compared with Maryland prescribers
Dr. Sittambalam wrote 43 prescriptions for Carvedilol, about 89% as often as the typical Maryland prescriber of it (48). Medicare paid $8.67 per fill, versus $10.39 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
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 Maryland prescribers
Dr. Sittambalam wrote 43 prescriptions for Sertraline Hcl, about 84% as often as the typical Maryland prescriber of it (51). Medicare paid $4.83 per fill, versus $10.84 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Maryland prescribers
Dr. Sittambalam wrote 42 prescriptions for Metformin Hcl Er, about 89% as often as the typical Maryland prescriber of it (47). Medicare paid $9.86 per fill, versus $11.20 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Empagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Maryland prescribers
Dr. Sittambalam wrote 41 prescriptions for Jardiance, about 90% as often as the typical Maryland prescriber of it (46). Medicare paid $1,030.70 per fill, versus $1,028.23 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
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 Maryland prescribers
Dr. Sittambalam wrote 39 prescriptions for Eliquis, about half as often as the typical Maryland prescriber of it (77). Medicare paid $1,254.70 per fill, versus $934.44 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
Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with Maryland prescribers
Dr. Sittambalam wrote 38 prescriptions for Omeprazole, about 62% as often as the typical Maryland prescriber of it (62). Medicare paid $12.59 per fill, versus $14.60 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
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 Maryland prescribers
Dr. Sittambalam wrote 37 prescriptions for Clopidogrel, about 79% as often as the typical Maryland prescriber of it (47). Medicare paid $10.32 per fill, versus $14.20 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Alendronate is used to prevent and treat certain types of bone loss (osteoporosis) in adults.
Compared with Maryland prescribers
Dr. Sittambalam wrote 35 prescriptions for Alendronate Sodium, about as often as the typical Maryland prescriber of it (37). Medicare paid $13.67 per fill, versus $10.54 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
Montelukast is used to control and prevent symptoms caused by asthma (such as wheezing and shortness of breath).
Compared with Maryland prescribers
Dr. Sittambalam wrote 34 prescriptions for Montelukast Sodium, about 77% as often as the typical Maryland prescriber of it (44). Medicare paid $11.50 per fill, versus $15.48 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
Doxazosin is used alone or with other drugs to treat high blood pressure (hypertension).
Compared with Maryland prescribers
Dr. Sittambalam wrote 33 prescriptions for Doxazosin Mesylate, about 1.3 times as often as the typical Maryland prescriber of it (26). Medicare paid $15.07 per fill, versus $18.78 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
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with Maryland prescribers
Dr. Sittambalam wrote 33 prescriptions for Metoprolol Tartrate, about half as often as the typical Maryland prescriber of it (56). Medicare paid $6.02 per fill, versus $8.19 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
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 Maryland prescribers
Dr. Sittambalam wrote 33 prescriptions for Simvastatin, about 66% as often as the typical Maryland prescriber of it (50). Medicare paid $6.44 per fill, versus $9.92 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
Dapagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Maryland prescribers
Dr. Sittambalam wrote 31 prescriptions for Farxiga, about 89% as often as the typical Maryland prescriber of it (35). Medicare paid $929.34 per fill, versus $1,020.87 statewide.
Volume reflects 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 Maryland prescribers
Dr. Sittambalam wrote 30 prescriptions for Duloxetine Hcl, about 75% as often as the typical Maryland prescriber of it (40). Medicare paid $16.70 per fill, versus $28.92 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
See also Warning section.
Compared with Maryland prescribers
Dr. Sittambalam wrote 26 prescriptions for Tramadol Hcl, about half as often as the typical Maryland prescriber of it (46). Medicare paid $3.59 per fill, versus $7.26 statewide.
Volume reflects 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 Maryland prescribers
Dr. Sittambalam wrote 25 prescriptions for Pioglitazone Hcl, about 86% as often as the typical Maryland prescriber of it (29). Medicare paid $14.09 per fill, versus $16.22 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
Baclofen is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury/disease).
Compared with Maryland prescribers
Dr. Sittambalam wrote 24 prescriptions for Baclofen, about 70% as often as the typical Maryland prescriber of it (34). Medicare paid $6.38 per fill, versus $21.87 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Levetiracetam is used to treat seizures (epilepsy).
Compared with Maryland prescribers
Dr. Sittambalam wrote 23 prescriptions for Levetiracetam, about half as often as the typical Maryland prescriber of it (46). Medicare paid $42.76 per fill, versus $36.82 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 a beta blocker used to treat high blood pressure, irregular heartbeats, shaking (tremors), and other conditions.
Compared with Maryland prescribers
Dr. Sittambalam wrote 21 prescriptions for Propranolol Hcl, about as often as the typical Maryland prescriber of it (22). Medicare paid $9.20 per fill, versus $18.32 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
This medication is used to treat depression.
Compared with Maryland prescribers
Dr. Sittambalam wrote 21 prescriptions for Trazodone Hcl, about 40% as often as the typical Maryland prescriber of it (53). Medicare paid $15.92 per fill, versus $10.07 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Amoxicillin/clavulanic acid is a combination penicillin-type antibiotic used to treat a wide variety of bacterial infections.
Compared with Maryland prescribers
Dr. Sittambalam wrote 19 prescriptions for Amoxicillin-Clavulanate Potass, about 74% as often as the typical Maryland prescriber of it (26). Medicare paid $6.87 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
Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Maryland prescribers
Dr. Sittambalam wrote 19 prescriptions for Lantus Solostar, about 61% as often as the typical Maryland prescriber of it (31). Medicare paid $132.38 per fill, versus $115.59 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
Azithromycin is used to treat a wide variety of bacterial infections.
Compared with Maryland prescribers
Dr. Sittambalam wrote 18 prescriptions for Azithromycin, about half as often as the typical Maryland prescriber of it (32). Medicare paid $2.62 per fill, versus $6.81 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
See also Warning section.
Compared with Maryland prescribers
Dr. Sittambalam wrote 18 prescriptions for Diclofenac Sodium, about half as often as the typical Maryland prescriber of it (35). Medicare paid $29.80 per fill, versus $35.85 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This drug is used to treat high blood pressure.
Compared with Maryland prescribers
Dr. Sittambalam wrote 18 prescriptions for Losartan-Hydrochlorothiazide, about half as often as the typical Maryland prescriber of it (34). Medicare paid $11.20 per fill, versus $16.34 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
Memantine is used to treat moderate to severe confusion (dementia) related to Alzheimer's disease.
Compared with Maryland prescribers
Dr. Sittambalam wrote 18 prescriptions for Memantine Hcl, about 35% as often as the typical Maryland prescriber of it (51). Medicare paid $26.94 per fill, versus $36.74 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat seizure disorders, certain psychiatric conditions (manic phase of bipolar disorder), and to prevent migraine headaches.
Compared with Maryland prescribers
Dr. Sittambalam wrote 17 prescriptions for Divalproex Sodium, about 33% as often as the typical Maryland prescriber of it (51). Medicare paid $13.16 per fill, versus $34.00 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with Maryland prescribers
Dr. Sittambalam wrote 17 prescriptions for Potassium Chloride, about 38% as often as the typical Maryland prescriber of it (44). Medicare paid $21.07 per fill, versus $23.11 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
This medication is used to prevent and decrease symptoms (wheezing and trouble breathing) caused by asthma and ongoing lung disease (chronic obstructive pulmonary disease-COPD, including chronic bronchitis and emphysema).
Compared with Maryland prescribers
Dr. Sittambalam wrote 16 prescriptions for Breo Ellipta, about half as often as the typical Maryland prescriber of it (30). Medicare paid $553.42 per fill, versus $554.93 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 Maryland prescribers
Dr. Sittambalam wrote 16 prescriptions for Ozempic, about 33% as often as the typical Maryland prescriber of it (48). Medicare paid $1,525.17 per fill, versus $1,411.16 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
Rivastigmine is used to treat confusion (dementia) related to Alzheimer's disease and to Parkinson's disease.
Compared with Maryland prescribers
Dr. Sittambalam wrote 16 prescriptions for Rivastigmine, about 68% as often as the typical Maryland prescriber of it (24). Medicare paid $304.31 per fill, versus $210.99 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
Rivaroxaban is used to prevent blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip or knee replacement surgery.
Compared with Maryland prescribers
Dr. Sittambalam wrote 16 prescriptions for Xarelto, about 41% as often as the typical Maryland prescriber of it (39). Medicare paid $1,092.49 per fill, versus $1,023.10 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
Atenolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with Maryland prescribers
Dr. Sittambalam wrote 15 prescriptions for Atenolol, about 41% as often as the typical Maryland prescriber of it (36). Medicare paid $6.23 per fill, versus $9.48 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
Ezetimibe is used along with a low cholesterol/low fat diet and exercise to help lower cholesterol in the blood.
Compared with Maryland prescribers
Dr. Sittambalam wrote 15 prescriptions for Ezetimibe, about 34% as often as the typical Maryland prescriber of it (44). Medicare paid $31.37 per fill, versus $41.87 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Hydralazine is used with or without other medications to treat high blood pressure.
Compared with Maryland prescribers
Dr. Sittambalam wrote 15 prescriptions for Hydralazine Hcl, about 37% as often as the typical Maryland prescriber of it (40). Medicare paid $14.48 per fill, versus $16.84 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Meloxicam is used to treat arthritis.
Compared with Maryland prescribers
Dr. Sittambalam wrote 15 prescriptions for Meloxicam, about 35% as often as the typical Maryland prescriber of it (43). Medicare paid $9.68 per fill, versus $5.32 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
Valsartan is used to treat high blood pressure and heart failure.
Compared with Maryland prescribers
Dr. Sittambalam wrote 15 prescriptions for Valsartan, about half as often as the typical Maryland prescriber of it (33). Medicare paid $33.62 per fill, versus $35.08 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
Ibuprofen is used to relieve pain from various conditions such as headache, dental pain, menstrual cramps, muscle aches, or arthritis.
Compared with Maryland prescribers
Dr. Sittambalam wrote 14 prescriptions for Ibuprofen, about half as often as the typical Maryland prescriber of it (31). Medicare paid $14.91 per fill, versus $6.45 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
This medication is a laxative used to treat constipation.
Compared with Maryland prescribers
Dr. Sittambalam wrote 14 prescriptions for Lactulose, about half as often as the typical Maryland prescriber of it (28). Medicare paid $17.70 per fill, versus $23.20 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat a variety of skin conditions (such as eczema, dermatitis, allergies, rash).
Compared with Maryland prescribers
Dr. Sittambalam wrote 14 prescriptions for Triamcinolone Acetonide, about 40% as often as the typical Maryland prescriber of it (35). Medicare paid $7.34 per fill, versus $10.78 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 medication is used to treat certain types of serious (possibly fatal) irregular heartbeat (such as recurrent ventricular fibrillation/tachycardia).
Compared with Maryland prescribers
Dr. Sittambalam wrote 12 prescriptions for Amiodarone Hcl, about 32% as often as the typical Maryland prescriber of it (37). Medicare paid $79.65 per fill, versus $30.07 statewide.
Volume reflects 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 Maryland prescribers
Dr. Sittambalam wrote 12 prescriptions for Bupropion Xl, about 34% as often as the typical Maryland prescriber of it (35). Medicare paid $30.94 per fill, versus $31.39 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
Fenofibrate is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with Maryland prescribers
Dr. Sittambalam wrote 12 prescriptions for Fenofibrate, about half as often as the typical Maryland prescriber of it (23). Medicare paid $29.78 per fill, versus $35.50 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
Olmesartan is used to treat high blood pressure (hypertension).
Compared with Maryland prescribers
Dr. Sittambalam wrote 12 prescriptions for Olmesartan Medoxomil, about 35% as often as the typical Maryland prescriber of it (35). Medicare paid $17.74 per fill, versus $29.84 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This is a long-acting form of oxybutynin that is used to treat overactive bladder and urinary conditions.
Compared with Maryland prescribers
Dr. Sittambalam wrote 12 prescriptions for Oxybutynin Chloride Er, about 40% as often as the typical Maryland prescriber of it (30). Medicare paid $37.98 per fill, versus $26.31 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. Sittambalam’s prescriptions
What does Dr. Sittambalam prescribe most?
In 2024 Medicare Part D data, Dr. Sittambalam's most prescribed medications were Atorvastatin Calcium (252), Amlodipine Besylate (228) and Metoprolol Succinate (127).
How does Dr. Sittambalam's prescribing compare with other Maryland prescribers?
Of the 69 medications with a state comparison, Dr. Sittambalam prescribes 14 more often than the typical Maryland prescriber, 20 about as often and 35 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Sittambalam 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 Maryland 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.
