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John Garrett Llewelyn, MD

Obstetrics & Gynecology Physician in Saginaw, MI · enumerated 2016.

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

National Provider Identifier

1326497066

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Registry record

Entity type Individual (Type 1)
Name John Garrett Llewelyn
Credential MD
Sex Male
Practice address 1000 Houghton Ave, Saginaw, MI, 48602
Phone (989) 746-7500
Enumeration date Jun 3, 2016
Last updated in NPPES Jan 9, 2026

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 4301506644 (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

What is the NPI number for John Llewelyn?
The National Provider Identifier (NPI) for John Llewelyn is 1326497066, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Llewelyn practice?
The practice location on file with NPPES is in Saginaw, MI. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-09.