Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joseph Milton Longnecker, D.O.

Pediatrics Physician in Placentia, CA · enumerated 2005.

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

National Provider Identifier

1326049263

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Registry record

Entity type Individual (Type 1)

Name Dr. Joseph Milton Longnecker

Credential D.O.

Sex Male

Practice address 1041 E. Yorba Linda Blvd., Suite 306, Placentia, CA, 92870

Phone (714) 577-9500

Fax (714) 577-9504

Enumeration date Aug 2, 2005

Last updated in NPPES Oct 29, 2015

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License B58230 (CA) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 20A3180 (CA) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A3180 (CA) Secondary

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

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 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.

What specialty is Joseph Longnecker?

Joseph Longnecker is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-10-29.