Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John B Llewelyn, MD

Obstetrics & Gynecology Physician in Saginaw, MI · enumerated 2005.

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

National Provider Identifier

1942209424

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name John B Llewelyn

Credential MD

Sex Male

Practice address 926 N Michigan Ave, Saginaw, MI, 48602

Phone (989) 753-8453

Fax (989) 753-3519

Enumeration date Jul 18, 2005

Last updated in NPPES May 28, 2025

Taxonomy & licenses

174400000X Specialist Other Service Providers · License JL060216 (MI) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 4301060216 (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
3153175	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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify John Llewelyn's NPI record?

Cross-check NPI 1942209424 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1942209424 active?

Yes, as of the latest NPPES snapshot, NPI 1942209424 is active (record last updated 2025-05-28).

Other providers at this practice address

Browse all →

Duane Heilbronn Obstetrics & Gynecology Physician · Saginaw, MI NPI 1417956186 James Hines Obstetrics & Gynecology Physician · Saginaw, MI NPI 1215936794 Julia Walter Obstetrics & Gynecology Physician · Saginaw, MI NPI 1588663066 Angie Domingo Obstetrics & Gynecology Physician · Saginaw, MI NPI 1396744876 Jana Meyers Maternal Newborn Registered Nurse · Saginaw, MI NPI 1902893050 Kristine Spence Obstetrics & Gynecology Physician · Saginaw, MI NPI 1497733190 Susanne Brooks Advanced Practice Midwife · Saginaw, MI NPI 1265410815 Valley Ob Gyn Clinic PC Specialist · Saginaw, MI NPI 1891803904

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-28.