Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. David Ken Yamada, M.D.

Family Medicine Physician in Simi Valley, CA · enumerated 2006.

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

National Provider Identifier

1861587131

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Registry record

Entity type Individual (Type 1)

Name Mr. David Ken Yamada

Credential M.D.

Sex Male

Practice address 2750 Sycamore Drive, Suite 202, Simi Valley, CA, 93065

Phone (805) 527-9140

Fax (805) 527-0783

Enumeration date Oct 4, 2006

Last updated in NPPES Oct 5, 2011

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License G59560 (CA) Primary

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
GR0065680	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 David Yamada?

David Yamada is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Daniel Takeda Family Medicine Physician · Simi Valley, CA NPI 1124120977

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-05.