Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Michael Gregory Williams, MD

Individual provider Emergency Medicine Physician · NPI 1578561304

Michael Gregory Williams, MD is an Emergency Medicine in Southfield, Michigan. Graduated from University of Michigan Medical School in 1984, 42 years ago. Practices with Theoria Medical, a 342-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
42
Trained at
University of Michigan Medical School
Licensed in
MI
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

20411 W 12 Mile Rd Ste 102
Southfield, MI 48076-6404
Phone: (248) 905-3194
Fax: (248) 905-3548
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X · Licence 4301049187 (MI)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MW049187 (MI)

Record details

NPI number1578561304
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 14, 2005
Last updated in NPPESJanuary 18, 2026
Certification dateJanuary 18, 2026
Mailing address20411 W 12 Mile Rd Ste 102, Southfield, MI 48076-6404

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 1984 (42 years in practice)
Group practice Theoria Medical — 342 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Southfield