Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Español Near me My list Help
US Patient GuideUSA
Surprise me
Family Practice

Derrick A. Williamson, DO

Sees patients in Southfield, MI · Michigan

Summary

Derrick A. Williamson, DO (Family Practice) is enrolled with Medicare at 1 practice location in Southfield, MI. NPI 1215922059. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(248) 939‑8455 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Derrick A. Williamson, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

1Practice location
Family PracticePrimary specialty
YesAccepts Medicare assignment
41Years since medical school (graduated 1985)
Michigan State University College Of Osteopathic MedicineMedical school
MaleGender (as listed)

Quick answers

Where does Derrick A. Williamson see patients?
Medicare's clinician data lists 1 practice location in Southfield, MI. Call before your visit to confirm the address.
What is Derrick A. Williamson's specialty?
Medicare lists Family Practice as the primary specialty.
Does Derrick A. Williamson accept Medicare assignment?
Yes. Medicare's clinician data says Derrick A. Williamson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Derrick A. Williamson?
(248) 939-8455, as listed in official Medicare / NPI Registry data.
What is Derrick A. Williamson's NPI number?
1215922059. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Derrick A. Williamson is enrolled with Medicare (CMS data updated 2026-10-02).

Specialties

Find other Family Practice doctors in Michigan →

Other family doctors in Southfield

Clinicians with the same Medicare primary specialty in Southfield, MI — not a recommendation.

All family doctors in Southfield →

Clinician information

CredentialDO
Medical schoolMichigan State University College Of Osteopathic Medicine
Graduation year1985
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1215922059
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians