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

Dr. David A Mayer, MD

Surgery Physician in Hauppauge, NY · enumerated 2006.

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

National Provider Identifier

1265471007

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Registry record

Entity type Individual (Type 1)

Name Dr. David A Mayer

Credential MD

Sex Male

Practice address Hauppauge, NY, 11749

Phone (631) 255-3304

Fax (631) 364-9672

Enumeration date Jun 6, 2006

Last updated in NPPES Dec 9, 2021

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

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 124152 (NY) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 124152-01 (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
00315673	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

Is NPI 1265471007 active?

Yes, as of the latest NPPES snapshot, NPI 1265471007 is active (record last updated 2021-12-09).

How do I verify David Mayer's NPI record?

Cross-check NPI 1265471007 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-09.