Opal Williams, M.D.
Family Medicine Physician · Rockville, MD
Opal Williams, M.D. is a family medicine physician with a practice address in Rockville, Maryland, and NPI 1770826364, issued on Apr 2, 2013. Check the license (Maryland D0081394, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Opal Williams
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- D0081394 MD
MD044671 DC
0101261173 VA
Self-reported in NPPES; status is on the state search - Practice location
- 2101 E Jefferson St, Rockville, MD 20852
- Phone
- (301) 816-5853
- Enumerated
- Apr 2, 2013
- Record last updated
- Jul 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20250715002317); accepts Medicare assignment
- Medical or professional school
- Morehouse School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,912 in Maryland → Look up another NPI →
Also registered at 2101 E Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Opal Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0081394Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family medicine physician in 2024
121 Medicare Part D claims for 80 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa14 claims
- Nitrofurantoin Mono-Macro11 claims
- Prednisone11 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.
Bills Medicare through 2 group practices
- Greater Baden Medical Service IncorporatedBrandywine, MD
- Patient First Maryland Medical Group PLLCOwings Mills, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Opal Williams among 1,912 family medicine physician records in Maryland
Opal Williams, M.D. is one of 1,912 family medicine physician records with a practice address in Maryland. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 72% of them.
- NPI issued2013 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2013 · median 2004 among the 1,141 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
77 family medicine physician records list a practice address in Rockville
They are 77 of the 14,353 NPPES records with a practice address in Rockville, and 1,912 family medicine physician records in Maryland.
All 1,912 in Maryland → Every provider in Rockville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Janice Beaverson, MDRockville, MD 208521306907803
- Sue Chen, D.O.Rockville, MD 208521285719377
- Yoon Cho, D.O.North Bethesda, MD 208521811094469
- Kamalinee DeshpandeRockville, MD 208521730277054
- Latoya Edwards, MDRockville, MD 208521689732638
- Jack Epstein, MDRockville, MD 208521063569507
- Steven Fong, M.D.Rockville, MD 208521346335205
- Zhen-Ya Gao, MDRockville, MD 208521598869885
Common questions
What is Opal Williams, M.D.'s NPI number?
Opal Williams, M.D.'s National Provider Identifier (NPI) is 1770826364, issued on Apr 2, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Opal Williams, M.D. located?
The NPPES record lists a practice address at 2101 E Jefferson St, Rockville, MD, 20852. Phone: (301) 816-5853. Providers update this record themselves, so call before visiting.
How can I verify Opal Williams, M.D.'s license?
NPPES lists Maryland license number D0081394, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Opal Williams, M.D. prescribe under Medicare Part D?
In 2024, Opal Williams, M.D. had 121 Medicare Part D claims for 80 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.