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

Michael Barnes

Individual provider Internal Medicine Physician · NPI 1588633176

Michael Barnes practises Internal Medicine in Royal Oak, Michigan. Graduated from Wayne State University School of Medicine in 1997, 29 years ago. Practices with Iha Ooma Primary LLC, a 44-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
29
Trained at
Wayne State University School of Medicine
Licensed in
MI
In the registry since
2006

Practice location Address checks out

3535 W 13 Mile Rd Ste LL
Royal Oak, MI 48073-6710
Phone: (248) 551-3000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3601 W 13 Mile Rd, Royal Oak, MI 48073-6712 — (248) 898-7999

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301070211 (MI)

Record details

NPI number1588633176
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 16, 2006
Last updated in NPPESMay 21, 2025
Certification dateMay 21, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Iha Ooma Primary Llc — 44 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients207
Services billed 818 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Colleagues at Iha Ooma Primary LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 44 clinicians in the practice; 12 are shown here.

Other providers in Royal Oak