Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Douglas G Farmer, MD

Transplant Surgery Physician in Los Angeles, CA · enumerated 2006.

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

National Provider Identifier

1679508923

Verified

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Registry record

Entity type Individual (Type 1)

Name Douglas G Farmer

Credential MD

Sex Male

Practice address 200 Ucla Medical Plz Ste 214, Los Angeles, CA, 90095

Phone (310) 267-9612

Fax (310) 206-4197

Enumeration date Jul 12, 2006

Last updated in NPPES Dec 30, 2019

Taxonomy & licenses

204F00000X Transplant Surgery Physician Allopathic & Osteopathic Physicians · License A49584 (CA) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License A49584 (CA) Secondary

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
00A495840	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 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 Douglas Farmer?

Douglas Farmer is registered in NPPES with the primary taxonomy of Transplant Surgery 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 2019-12-30.