Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Timothy Gerard Geen, M.D.

Pediatrics Physician in Penfield, NY · enumerated 2006.

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

National Provider Identifier

1144257908

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Registry record

Entity type Individual (Type 1)

Name Timothy Gerard Geen

Credential M.D.

Sex Male

Practice address 21 Willow Pond Way, Ste 200, Penfield, NY, 14526

Phone (585) 377-0840

Fax (585) 377-9715

Enumeration date Jun 27, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 173468 (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
01684899	Medicaid	NY	-
4249579	Other	NY	AETNA
101223DL	Other	NY	PREFERRED CARE

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 specialty is Timothy Geen?

Timothy Geen is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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