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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Hal R Yost, D.O.

Internal Medicine Physician in Traverse City, MI · enumerated 2006.

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

National Provider Identifier

1801820154

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Registry record

Entity type Individual (Type 1)
Name Dr. Hal R Yost
Credential D.O.
Sex Male
Practice address 1105 Sixth St, Traverse City, MI, 49684
Fax (231) 922-9271
Enumeration date Jul 11, 2006
Last updated in NPPES Jun 18, 2014

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 5101009016 (MI) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
1151600345 Other MI INDIVIDUAL BLUE CROSS
2573166 Medicaid MI -
010A660000 Other MI GROUP BLUE CROSS

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 Hal Yost's NPI record?
Cross-check NPI 1801820154 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1801820154 active?
Yes, as of the latest NPPES snapshot, NPI 1801820154 is active (record last updated 2014-06-18).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-18.