DR. ROBERT P. WILLIAMS M.D.
Prescription History 1164527552
Internal Medicine - Gastroenterology in Washington D.c., DC
NPI Status: Active since September 13, 2006
Contact Information
1140 VARNUM STREET N.E
SUITE 201
WASHINGTON D.C., DC
ZIP 20017
Phone: (202) 529-4535
Fax: (202) 635-4247
Prescription History for Informed Healthcare Decisions
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. ROBERT P. WILLIAMS M.D., an active Gastroenterology specialist practicing in Washington D.c., DC. Our medical registry currently tracks 16 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 250 documented patient claims. Among these therapy options, the most frequently utilized medication is Atorvastatin Calcium, which accounts for 27 claims alone.
Medication Index
Allopurinol
Generic Formulation: AllopurinolSpecialty: Internal MedicineProvider Avg Cost Per Claim
$12.61
State Avg Cost Per Claim
$16.57
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A XANTHINE OXIDASE inhibitor that decreases URIC ACID production. It also acts as an antimetabolite on some simpler organisms.
Allopurinol is used to treat gout and certain types of kidney stones. It is also used to prevent increased uric acid levels in patients receiving cancer chemotherapy. These patients can have increased uric acid levels due to release of uric acid from the dying cancer cells. Allopurinol works by reducing the amount of uric acid made by the body. Increased uric acid levels can cause gout and kidney problems.
Amlodipine Besylate
Generic Formulation: Amlodipine BesylateSpecialty: Internal MedicineProvider Avg Cost Per Claim
$15.52
State Avg Cost Per Claim
$9.30
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A long-acting dihydropyridine calcium channel blocker. It is effective in the treatment of ANGINA PECTORIS and HYPERTENSION.
Amlodipine is used with or without other medications to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Amlodipine belongs to a class of drugs known as calcium channel blockers. It works by relaxing blood vessels so blood can flow more easily. Amlodipine is also used to prevent certain types of chest pain (angina). It may help to increase your ability to exercise and decrease the frequency of angina attacks. It should not be used to treat attacks of chest pain when they occur. Use other medications (such as sublingual nitroglycerin) to relieve attacks of chest pain as directed by your doctor.
Atorvastatin Calcium
Generic Formulation: Atorvastatin CalciumSpecialty: Internal MedicineProvider Avg Cost Per Claim
$29.02
State Avg Cost Per Claim
$14.03
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A pyrrole and heptanoic acid derivative, HYDROXYMETHYLGLUTARYL-COA REDUCTASE INHIBITOR (statin), and ANTICHOLESTEREMIC AGENT that is used to reduce serum levels of LDL-CHOLESTEROL; APOLIPOPROTEIN B; and TRIGLYCERIDES. It is used to increase serum levels of HDL-CHOLESTEROL in the treatment of HYPERLIPIDEMIAS, and for the prevention of CARDIOVASCULAR DISEASES in patients with multiple risk factors.
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. It belongs to a group of drugs known as statins. It works by reducing the amount of cholesterol made by the liver. Lowering bad cholesterol and triglycerides and raising good cholesterol decreases the risk of heart disease and helps prevent strokes and heart attacks. In addition to eating a proper diet (such as a low-cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Consult your doctor for more details.
Colchicine
Generic Formulation: ColchicineSpecialty: Internal MedicineProvider Avg Cost Per Claim
$258.94
State Avg Cost Per Claim
$107.03
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A major alkaloid from Colchicum autumnale L. and found also in other Colchicum species. Its primary therapeutic use is in the treatment of gout, but it has been used also in the therapy of familial Mediterranean fever (PERIODIC DISEASE).
This medication is used to prevent or treat gout attacks (flares). Usually gout symptoms develop suddenly and involve only one or a few joints. The big toe, knee, or ankle joints are most often affected. Gout is caused by too much uric acid in the blood. When uric acid levels in the blood are too high, the uric acid may form hard crystals in your joints. Colchicine works by decreasing swelling and lessening the build up of uric acid crystals that cause pain in the affected joint(s). This medication is also used to prevent attacks of pain in the abdomen, chest, or joints caused by a certain inherited disease (familial Mediterranean fever). It is thought to work by decreasing your body's production of a certain protein (amyloid A) that builds up in people with familial Mediterranean fever. Colchicine is not a pain medication and should not be used to relieve other causes of pain.
Diclofenac Sodium
Generic Formulation: Diclofenac SodiumSpecialty: Internal MedicineProvider Avg Cost Per Claim
$32.47
State Avg Cost Per Claim
$27.53
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A non-steroidal anti-inflammatory agent (NSAID) with antipyretic and analgesic actions. It is primarily available as the sodium salt.
See also Warning section. This medication is used to relieve joint pain from arthritis. Diclofenac belongs to a class of drugs known as nonsteroidal anti-inflammatory drugs (NSAIDs). If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain.
Edarbi
Generic Formulation: Azilsartan MedoxomilSpecialty: Internal MedicineProvider Avg Cost Per Claim
$254.34
State Avg Cost Per Claim
$402.20
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
Azilsartan is used to treat high blood pressure (hypertension). Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Azilsartan belongs to a class of drugs called angiotensin receptor blockers (ARBs). It works by relaxing blood vessels so that blood can flow more easily.
Edarbyclor
Generic Formulation: Azilsartan Med/ChlorthalidoneSpecialty: Internal MedicineProvider Avg Cost Per Claim
$239.05
State Avg Cost Per Claim
$476.56
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
This medication is used to treat high blood pressure (hypertension). Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This product contains two medications: azilsartan and chlorthalidone. Azilsartan works by relaxing blood vessels so blood can flow more easily. It belongs to a class of drugs called angiotensin receptor blockers (ARBs). Chlorthalidone causes your body to get rid of extra salt and water by making more urine. It is called a water pill or diuretic.
Glipizide
Generic Formulation: GlipizideSpecialty: Internal MedicineProvider Avg Cost Per Claim
$17.04
State Avg Cost Per Claim
$10.08
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
An oral hypoglycemic agent which is rapidly absorbed and completely metabolized.
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes. It may also be used with other diabetes medications. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Glipizide belongs to the class of drugs known as sulfonylureas. It lowers blood sugar by causing the release of your body's natural insulin.
Hydralazine Hcl
Generic Formulation: Hydralazine HclSpecialty: Internal MedicineProvider Avg Cost Per Claim
$11.47
State Avg Cost Per Claim
$25.38
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
Hydralazine is used with or without other medications to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Hydralazine is called a vasodilator. It works by relaxing blood vessels so blood can flow through the body more easily.
Hydrochlorothiazide
Generic Formulation: HydrochlorothiazideSpecialty: Internal MedicineProvider Avg Cost Per Claim
$8.80
State Avg Cost Per Claim
$6.08
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A thiazide diuretic often considered the prototypical member of this class. It reduces the reabsorption of electrolytes from the renal tubules. This results in increased excretion of water and electrolytes, including sodium, potassium, chloride, and magnesium. It is used in the treatment of several disorders including edema, hypertension, diabetes insipidus, and hypoparathyroidism.
This medication is used to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Hydrochlorothiazide belongs to a class of drugs known as diuretics/water pills. It works by causing you to make more urine. This helps your body get rid of extra salt and water. This medication also reduces extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, or kidney disease. This can lessen symptoms such as shortness of breath or swelling in your ankles or feet.
Levemir Flexpen
Generic Formulation: Insulin DetemirSpecialty: Internal MedicineProvider Avg Cost Per Claim
$777.42
State Avg Cost Per Claim
--
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A recombinant long-acting insulin and hypoglycemic agent in which a MYRISTIC ACID is conjugated to a LYSINE at position B29. It is used to manage BLOOD GLUCOSE levels in patients with DIABETES MELLITUS.
Insulin detemir is used with a proper diet and exercise program to control high blood sugar in people with diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Insulin detemir is a man-made product that is similar to human insulin. It replaces the insulin that your body would normally make. It acts longer than regular insulin, providing a low, steady level of insulin. It works by helping blood sugar (glucose) get into cells so your body can use it for energy. Insulin detemir may be used with a shorter-acting insulin product. It may also be used alone or with other diabetes drugs (such as metformin, exenatide).
Meclizine Hcl
Generic Formulation: Meclizine HclSpecialty: Internal MedicineProvider Avg Cost Per Claim
$13.48
State Avg Cost Per Claim
$13.11
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
Meclizine is an antihistamine that is used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness. It may also be used to reduce dizziness and loss of balance (vertigo) caused by inner ear problems.
Metformin Hcl
Generic Formulation: Metformin HclSpecialty: Internal MedicineProvider Avg Cost Per Claim
$9.47
State Avg Cost Per Claim
$9.09
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A biguanide hypoglycemic agent used in the treatment of non-insulin-dependent diabetes mellitus not responding to dietary modification. Metformin improves glycemic control by improving insulin sensitivity and decreasing intestinal absorption of glucose. (From Martindale, The Extra Pharmacopoeia, 30th ed, p289)
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar. It is used in patients with type 2 diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Metformin works by helping to restore your body's proper response to the insulin you naturally produce. It also decreases the amount of sugar that your liver makes and that your stomach/intestines absorb.
Nifedipine Er
Generic Formulation: NifedipineSpecialty: Internal MedicineProvider Avg Cost Per Claim
$64.17
State Avg Cost Per Claim
$65.22
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A potent vasodilator agent with calcium antagonistic action. It is a useful anti-anginal agent that also lowers blood pressure.
This medication is used to prevent certain types of chest pain (angina). It may allow you to exercise more and decrease the frequency of angina attacks. Nifedipine belongs to a class of medications known as calcium channel blockers. It works by relaxing blood vessels so blood can flow more easily. This medication must be taken regularly to be effective. It should not be used to treat attacks of chest pain when they occur. Use other medications (such as sublingual nitroglycerin) to relieve attacks of chest pain as directed by your doctor. Consult your doctor or pharmacist for details. Older adults should discuss the risks and benefits of this medication with their doctor or pharmacist, as well as other possibly safer forms of nifedipine (such as the long-acting tablets).
Olmesartan-Hydrochlorothiazide
Generic Formulation: Olmesartan/HydrochlorothiazideSpecialty: Internal MedicineProvider Avg Cost Per Claim
$115.49
State Avg Cost Per Claim
$88.81
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
This drug is used to treat high blood pressure (hypertension). Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This product contains two medications: olmesartan and hydrochlorothiazide. Olmesartan is an angiotensin receptor blocker (ARB) and works by relaxing blood vessels so that blood can flow more easily. Hydrochlorothiazide is a water pill (diuretic) that causes you to make more urine, which helps your body get rid of extra salt and water.
Tramadol Hcl
Generic Formulation: Tramadol HclSpecialty: Internal MedicineProvider Avg Cost Per Claim
$5.03
State Avg Cost Per Claim
$8.19
Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.
A narcotic analgesic proposed for severe pain. It may be habituating.
See also Warning section. This medication is used to help relieve moderate to moderately severe pain. Tramadol belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain.
Dataset Methodology & CMS Source Information
This analytical profile maps public infrastructure records sourced directly from official **Centers for Medicare & Medicaid Services (CMS)** public data releases. The statistics above track documented pharmaceutical treatment trends assigned to beneficiaries specifically under federal public programs. Evaluating the prescriptive footprints of clinical practitioners like DR. ROBERT P. WILLIAMS M.D. provides transparency into local medical care patterns within Washington D.c., DC.
Key Learning Objectives for this Profile:
- Prescribing Frequencies: Track and evaluate the volume metrics of specific brand-name and generic medical formulas chosen by this provider over time.
- Clinical Focus Areas: Identify how the provider distributes therapeutic selections across medical care options to gain insight into their true day-to-day **Gastroenterology** practice concentrations.
- Program Cost Awareness: Review the calculated total systemic drug costs and raw transactional volumes linked to these orders to better anticipate network insurance coverage structures.
- Patient-Centered Evaluation: Cross-reference localized regional care comparisons to align practitioner habits directly with your proactive health maintenance goals.
Data Scope Exclusion & Limitations: The data elements presented above explicitly reflect prescription orders processed for Medicare beneficiaries during the year 2023. This informational profile does not aggregate prescription data for individuals utilizing private commercial health plans, state Medicaid coverage, or self-pay options. However, because medical decision-making remains highly consistent across clinical settings, this public registry provides a reliable proxy for understanding the general prescribing preferences and pharmaceutical care approach used by this provider.