Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ralph E Retherford MD Inc

Q: What is the NPI number for Ralph E Retherford MD Inc?

The NPI for Ralph E Retherford MD Inc is 1952319816, a Type 2 (organization) record in the CMS NPPES registry.

Family Medicine Physician in Sonora, CA · enumerated 2006 · authorized official Ralph Retherford, Owner.

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

National Provider Identifier

1952319816

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Registry record

Entity type Organization (Type 2)

Legal business name Ralph E Retherford MD Inc

Practice address 16050 Via Este Rd, Sonora, CA, 95370

Phone (209) 588-1424

Fax (209) 588-1521

Enumeration date Aug 4, 2006

Last updated in NPPES Oct 22, 2008

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License A24305 (CA) Primary

Authorized official

Name Ralph Retherford

Title Owner

Phone (209) 588-1424

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

What is the NPI number for Ralph E Retherford MD Inc?

The NPI for Ralph E Retherford MD Inc is 1952319816, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Ralph E Retherford MD Inc?

NPPES lists Ralph Retherford (Owner) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-22.