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

Mamon Tahhan, MD

Individual provider Internal Medicine Physician · NPI 1932326519

Mamon Tahhan, MD practises Internal Medicine in Royal Oak, Michigan. Qualified in 2000, 26 years ago. Practices with Beaumont Medical Group Hospital Based Services, a 572-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
26
Licensed in
MI
In the registry since
2007
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

3601 W 13 Mile Rd
Royal Oak, MI 48073-6712
Phone: (248) 898-5000
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301084457 (MI)

Record details

NPI number1932326519
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 18, 2007
Last updated in NPPESJuly 21, 2022
Certification dateJuly 21, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Beaumont Medical Group Hospital Based Services — 572 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 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 patients192
Services billed 738 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 Beaumont Medical Group Hospital Based Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 572 clinicians in the practice; 12 are shown here.

Other providers in Royal Oak