Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John Reed Rayher, DDS, MD

Q: What is the NPI number for John Rayher?

The National Provider Identifier (NPI) for John Rayher is 1427243435, a Type 1 (individual) record in the CMS NPPES registry.

Oral & Maxillofacial Surgery (D.M.D.) in San Francisco, CA · enumerated 2007.

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

National Provider Identifier

1427243435

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Registry record

Entity type Individual (Type 1)

Name Dr. John Reed Rayher

Credential DDS, MD

Sex Male

Practice address San Francisco, CA, 94102

Phone (415) 397-1400

Fax (415) 397-1402

Enumeration date Sep 12, 2007

Last updated in NPPES Jun 10, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License A97310 (CA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does John Rayher practice?

The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for John Rayher?

The National Provider Identifier (NPI) for John Rayher is 1427243435, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-10.