Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Peter C Lenhart, M.D.

Internal Medicine Physician in Ada, MI · enumerated 2005.

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

National Provider Identifier

1831170646

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Registry record

Entity type Individual (Type 1)

Name Dr. Peter C Lenhart

Credential M.D.

Sex Male

Practice address 6741 E Fulton St, Ste 201, Ada, MI, 49301

Phone (616) 685-2500

Fax (616) 685-2511

Enumeration date Nov 9, 2005

Last updated in NPPES Sep 6, 2019

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 4301116956 (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.

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Frequently asked questions

How do I verify Peter Lenhart's NPI record?

Cross-check NPI 1831170646 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1831170646 active?

Yes, as of the latest NPPES snapshot, NPI 1831170646 is active (record last updated 2019-09-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-06.