Michael Gregory Williams, MD
General Practice Physician · Southfield, MI
Michael Gregory Williams, MD is a general practice physician with a practice address in Southfield, Michigan, and NPI 1578561304, issued on Jul 14, 2005. Check the license (Michigan 4301049187, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Michael Gregory Williams
- Credential
- MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License numbers
- 4301049187 MI
MW049187 MI
Self-reported in NPPES; status is on the state search - Practice location
- 20411 W 12 Mile RD Ste 102, Southfield, MI 48076
- Phone
- (248) 905-3194
- Enumerated
- Jul 14, 2005
- Record last updated
- Jan 18, 2026
- Fax
- (248) 905-3548
- Medicaid ID
- 1578561304 MI
- Medicare enrollment
- Enrolled (PECOS I20040225001026); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1984
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 369 in Michigan → Look up another NPI →
Verify Michael Gregory Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301049187Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average general practice physician in 2024
1,915 Medicare Part D claims for 152 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. 757 claims were for opioids.
Most prescribed
- Oxycodone Hcl339 claims
- Oxycodone-Acetaminophen282 claims
- Cyclobenzaprine Hcl178 claims
- Diclofenac Sodium145 claims
- Hydrocodone-Acetaminophen124 claims
- Gabapentin111 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 one group practice
- Theoria MedicalGrand Rapids, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Gregory Williams among 369 general practice physician records in Michigan
Michael Gregory Williams, MD is one of 369 general practice physician records with a practice address in Michigan. 49% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 49% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated1984 · median 2001 among the 98 with a school on file
- Record last updated2026 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in Michigan
There are 369 general practice physician records in Michigan.
All 369 in Michigan → Every provider in Southfield → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Esther Arhin-Southfield, MI 480761497055933
- Rebecca Motley, M.D.Southfield, MI 480761295782951
- Masoud AhmadmehrabiSouthfield, MI 480751669595641
- Salam Brikho, M.D., M.S.Southfield, MI 480751437612579
- Daphine Brown, M.D.Southfield, MI 480751538246087
- Elizer Garcia, M.D.Southfield, MI 480751174993174
- Vicha Janviriya, MDSouthfield, MI 480751174603930
- Ardeshir Said, MDSouthfield, MI 480751184871857
Common questions
What is Michael Gregory Williams, MD's NPI number?
Michael Gregory Williams, MD's National Provider Identifier (NPI) is 1578561304, issued on Jul 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael Gregory Williams, MD located?
The NPPES record lists a practice address at 20411 W 12 Mile RD Ste 102, Southfield, MI, 48076. Phone: (248) 905-3194. Providers update this record themselves, so call before visiting.
How can I verify Michael Gregory Williams, MD's license?
NPPES lists Michigan license number 4301049187, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Gregory Williams, MD prescribe under Medicare Part D?
In 2024, Michael Gregory Williams, MD had 1,915 Medicare Part D claims for 152 beneficiaries; the average among general practice physician prescribers was 3,030. 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.