Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John Zaven Ayanian, MD

Individual provider Internal Medicine Physician · NPI 1164488805

John Zaven Ayanian, MD is an Internal Medicine in Ann Arbor, Michigan. Graduated from Harvard Medical School in 1987, 39 years ago. Practices with Regents of the University of Michigan, a 3,271-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and Michigan.

Years since qualifying
39
Trained at
Harvard Medical School
Licensed in
MA, MI
In the registry since
2006
Specialties on file
2
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

1500 E Medical Center Dr
Ann Arbor, MI 48109-5000
Phone: (734) 936-4000
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 4301104623 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 72339 (MA)

Record details

NPI number1164488805
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 21, 2006
Last updated in NPPESDecember 12, 2019
Certification dateDecember 12, 2019

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1987 (39 years in practice)
Group practice Regents Of The University Of Michigan — 3271 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations13 on file with Medicare

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