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Dr. Werner Hollstein, MD

Family Medicine Physician in Saint Johns, MI · enumerated 2006.

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

National Provider Identifier

1649248998

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Registry record

Entity type Individual (Type 1)
Name Dr. Werner Hollstein
Credential MD
Sex Male
Practice address 901 S Oakland St Ste 201, Saint Johns, MI, 48879
Phone (989) 224-2338
Fax (989) 224-2065
Enumeration date Mar 11, 2006
Last updated in NPPES Feb 19, 2015

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 4301037559 (MI) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 4301037559 (MI) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
1280689 Medicaid MI -
C20578 Other MI RAILROAD MEDICARE
3346108 Medicaid MI -

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

What specialty is Werner Hollstein?
Werner Hollstein is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-19.