Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alan F. Bloom, MD

Ophthalmology Physician in Pittsford, NY · enumerated 2006.

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

National Provider Identifier

1003841446

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Registry record

Entity type Individual (Type 1)

Name Alan F. Bloom

Credential MD

Sex Male

Practice address 500 Kreag Road, Pittsford, NY, 14534

Phone (585) 249-8300

Fax (585) 249-8380

Enumeration date Jul 12, 2006

Last updated in NPPES May 4, 2021

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 158788 (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
180010335	Other	NY	MEDICARE

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 Alan Bloom?

Alan Bloom is registered in NPPES with the primary taxonomy of Ophthalmology 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.

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Patricia Weisenreder Optometrist · Pittsford, NY NPI 1194756106

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-04.