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

Dr. Yeong K Ahn, M.D.

Specialist in Los Angeles, CA · enumerated 2005.

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

National Provider Identifier

1073504031

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Registry record

Entity type Individual (Type 1)

Name Dr. Yeong K Ahn

Credential M.D.

Sex Male

Practice address Los Angeles, CA, 90027

Phone (323) 457-4350

Fax (323) 913-4351

Enumeration date Oct 31, 2005

Last updated in NPPES Dec 11, 2020

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License A45633 (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
00A456330	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1073504031 active?

Yes, as of the latest NPPES snapshot, NPI 1073504031 is active (record last updated 2020-12-11).

How do I verify Yeong Ahn's NPI record?

Cross-check NPI 1073504031 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-11.