Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Lenar Tatios Yessayan, M.D.

Nephrology Physician in Ann Arbor, MI · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1023210861

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Registry record

Entity type Individual (Type 1)

Name Dr. Lenar Tatios Yessayan

Credential M.D.

Sex Male

Practice address 2850 South Industrial Hwy, Ann Arbor, MI, 48104

Phone (734) 677-1490

Enumeration date Jun 4, 2007

Last updated in NPPES Jan 14, 2026

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 4301082653 (MI) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 4301082653 (MI) Secondary

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 4301082653 (MI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Lenar Yessayan practice?

The practice location on file with NPPES is in Ann Arbor, MI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Lenar Yessayan?

The National Provider Identifier (NPI) for Lenar Yessayan is 1023210861, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Melissa Tinney Physical Medicine & Rehabilitation Physician · Ann Arbor, MI NPI 1184732281 James Leonard Physical Medicine & Rehabilitation Physician · Ann Arbor, MI NPI 1518049493

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-14.