Robert P. Williams, M.D.
Gastroenterology Physician · Washington Dc, DC
Robert P. Williams, M.D. is a gastroenterology physician with a practice address in Washington Dc, District of Columbia, and NPI 1164527552, issued on Sep 13, 2006. Check the license (District of Columbia MD13374, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Robert P. Williams
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- MD13374 DC
Self-reported in NPPES; status is on the state search - Practice location
- 1140 Varnum Street N.E, Washington Dc, DC 20017
- Phone
- (202) 529-4535
- Enumerated
- Sep 13, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (202) 635-4247
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 89 in District of Columbia → Look up another NPI →
Verify Robert P. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD13374Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average gastroenterology physician in 2024
283 Medicare Part D claims for 68 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium18 claims
- Olmesartan-Hydrochlorothiazide14 claims
- Amlodipine Besylate13 claims
- Hydrochlorothiazide13 claims
- Simvastatin12 claims
- Edarbi11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Robert P. Williams among 89 gastroenterology physician records in District of Columbia
Robert P. Williams, M.D. is one of 89 gastroenterology physician records with a practice address in District of Columbia. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 49% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2007 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in District of Columbia
There are 89 gastroenterology physician records in District of Columbia.
All 89 in District of Columbia → Every provider in Washington Dc → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Tahmoures Dehesh, M.D.Washington, DC 200171740277748
- Junette Gibbons, MDWashington, DC 200171497941371
- Stuart Horwitz, MDWashington, DC 200171134180128
- Elizabeth Myles, MDWashington, DC 200171376606566
- Danny Shearer, MDWashington, DC 200171275594905
- Gary Thompson, MDWashington, DC 200171609838937
- Arthur West, MDWashington, DC 200171407818800
- Nicholas ChristopherWashington, DC 200161144336462
Common questions
What is Robert P. Williams, M.D.'s NPI number?
Robert P. Williams, M.D.'s National Provider Identifier (NPI) is 1164527552, issued on Sep 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert P. Williams, M.D. located?
The NPPES record lists a practice address at 1140 Varnum Street N.E, Washington Dc, DC, 20017. Phone: (202) 529-4535. Providers update this record themselves, so call before visiting.
How can I verify Robert P. Williams, M.D.'s license?
NPPES lists District of Columbia license number MD13374, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert P. Williams, M.D. prescribe under Medicare Part D?
In 2024, Robert P. Williams, M.D. had 283 Medicare Part D claims for 68 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.