Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Frederick Y Yap, M.D.

Geriatric Medicine (Internal Medicine) Physician in Saint Louis, MO · enumerated 2006.

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

National Provider Identifier

1780601732

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Registry record

Entity type Individual (Type 1)

Name Frederick Y Yap

Credential M.D.

Sex Male

Practice address 1 Jefferson Barracks Dr Bldg 55, Saint Louis, MO, 63125

Phone (314) 845-5054

Enumeration date Jul 16, 2006

Last updated in NPPES May 13, 2024

Taxonomy & licenses

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MO106411 (MO) 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
1649297698	Other	MO	NPI GROUP
1780601732	Other	MO	NPI
208948414	Medicaid	MO	-

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 Frederick Yap?

The National Provider Identifier (NPI) for Frederick Yap is 1780601732, a Type 1 (individual) record in the CMS NPPES registry.

Where does Frederick Yap practice?

The practice location on file with NPPES is in Saint Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-13.