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Internal Medicine

Derek A. Einhorn, MD

Works at hospitals in Southfield, MI · Farmington Hills, MI · Royal Oak, MI · Michigan

Summary

Derek A. Einhorn, MD (Internal Medicine) is listed by Medicare at 3 hospitals in Southfield, MI, Farmington Hills, MI and Royal Oak, MI. NPI 1801855762. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Derek A. Einhorn, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
28Years since medical school (graduated 1998)
Wayne State University School Of MedicineMedical school
MaleGender (as listed)
VMD Primary Providers Eastern Michigan PCGroup practice

Quick answers

Which hospitals does Derek A. Einhorn work at?
Medicare's official clinician data lists Derek A. Einhorn at 3 hospitals: Ascension Providence Hospital, Southfield and Novi…, Beaumont Hospital - Farmington Hills and Beaumont Hospital Royal Oak. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Derek A. Einhorn see patients?
Medicare's clinician data lists 3 practice locations, including Farmington, MI, Novi, MI and Westland, MI. Call before your visit to confirm the address.
What is Derek A. Einhorn's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Derek A. Einhorn accept Medicare assignment?
Yes. Medicare's clinician data says Derek A. Einhorn 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.
Does Derek A. Einhorn offer telehealth?
Medicare's clinician data says Derek A. Einhorn offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Derek A. Einhorn?
(248) 476-2420, as listed in official Medicare / NPI Registry data.
What is Derek A. Einhorn's NPI number?
1801855762. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Derek A. Einhorn works

Medicare's Facility Affiliation Data lists Derek A. Einhorn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

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

  • 23133 Orchard Lake Rd, Suite 102Farmington, MI 48336 (248) 476‑2420
  • 39475 Lewis DrNovi, MI 48377
  • 400 N Wayne Rd, Michigan Family PhysiciansWestland, MI 48185 (734) 522‑7000

Group practices

Medicare enrollment lists Derek A. Einhorn as a member of this group (CMS data updated 2026-10-02).

  • VMD Primary Providers Eastern Michigan PC61 clinicians in the group

Specialties

Find other Internal Medicine doctors in Michigan →

Other internal medicine doctors in Michigan

Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.

All internal medicine doctors in Michigan →

Clinician information

CredentialMD
Medical schoolWayne State University School Of Medicine
Graduation year1998
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1801855762
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians