Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Patricia L. Rehfield, DO

Public Health & General Preventive Medicine Physician in Walnut Creek, CA · enumerated 2006.

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

National Provider Identifier

1487693701

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Registry record

Entity type Individual (Type 1)

Name Patricia L. Rehfield

Credential DO

Sex Female

Practice address 2960 Camino Diablo Ste 105, Walnut Creek, CA, 94597

Phone (800) 892-2695

Enumeration date Jun 5, 2006

Last updated in NPPES Nov 16, 2022

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 5101007713 (MI) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A10854 (CA) Secondary

2083P0901X Public Health & General Preventive Medicine Physician Allopathic & Osteopathic Physicians · License 5101007713 (MI) Secondary

2083P0901X Public Health & General Preventive Medicine Physician Allopathic & Osteopathic Physicians · License 20A10854 (CA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
519693	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

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 Patricia Rehfield?

Patricia Rehfield is registered in NPPES with the primary taxonomy of Public Health & General Preventive Medicine 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 2022-11-16.