Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alan Diner, M.D.

Q: What is the NPI number for Alan Diner?

The National Provider Identifier (NPI) for Alan Diner is 1225020027, a Type 1 (individual) record in the CMS NPPES registry.

Adolescent Medicine (Internal Medicine) Physician in Bayside, NY · enumerated 2005.

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

National Provider Identifier

1225020027

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Registry record

Entity type Individual (Type 1)

Name Alan Diner

Credential M.D.

Sex Male

Practice address 213 14a Union Tpke, Bayside, NY, 11364

Phone (718) 465-6767

Fax (718) 217-7977

Enumeration date Aug 17, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207RA0000X Adolescent Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 139908 (NY) 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
01617716	Medicaid	NY	-

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

Where does Alan Diner practice?

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

What is the NPI number for Alan Diner?

The National Provider Identifier (NPI) for Alan Diner is 1225020027, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.