Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Anthony Dwayne Williams, MD

Individual provider Gastroenterology Physician · NPI 1245246354

Dr. Anthony Dwayne Williams, MD practises Gastroenterology in Southfield, Michigan. Graduated from Wayne State University School of Medicine in 1993, 33 years ago. Practices with Henry Ford Wyandotte Hospital, a 194-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
33
Trained at
Wayne State University School of Medicine
Licensed in
MI
In the registry since
2006
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

23077 Greenfield Rd Ste 231
Southfield, MI 48075-3709
Phone: (248) 569-2160
Fax: (248) 569-5756
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3304 Cooley Ct, Portage, MI 49024-7430 — (269) 349-2266

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 4301062274 (MI)

Record details

NPI number1245246354
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 31, 2006
Last updated in NPPESOctober 27, 2023
Certification dateOctober 27, 2023

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice Henry Ford Wyandotte Hospital — 194 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 89 times · 77th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 74 times · 71st percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients205
Services billed 316 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Henry Ford Health Hospital Hospital · Detroit, MI · listed as Henry Ford Health-Main Hospital
  • Wyandotte Hospital And Medical Center Hospital · Wyandotte, MI

Colleagues at Henry Ford Wyandotte Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 194 clinicians in the practice; 12 are shown here.

Other providers in Southfield