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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Tad Patrick Callahan, MD

Obstetrics & Gynecology Physician in Santa Maria, CA · enumerated 2006 · practices at Center for Women'S Health and Family Birth.

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

National Provider Identifier

1225112931

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Registry record

Entity type Individual (Type 1)
Name Dr. Tad Patrick Callahan
Credential MD
Sex Male
Practice address 210 S Palisade Dr Ste 101, Santa Maria, CA, 93454
Phone (805) 922-0481
Fax (805) 925-5261
Enumeration date Oct 25, 2006
Last updated in NPPES Dec 20, 2022

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License A24996 (CA) 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
CB217899 Other CA MEDICARE ID
00A249960 Medicaid CA -

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

Is NPI 1225112931 active?
Yes, as of the latest NPPES snapshot, NPI 1225112931 is active (record last updated 2022-12-20).
How do I verify Tad Callahan's NPI record?
Cross-check NPI 1225112931 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-20.