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

Dr. John W Simon, M.D.

Ophthalmology Physician in Latham, NY · enumerated 2006.

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

National Provider Identifier

1093770323

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Registry record

Entity type Individual (Type 1)

Name Dr. John W Simon

Credential M.D.

Sex Male

Practice address Latham, NY, 12110

Phone (518) 533-6502

Fax (518) 533-6505

Enumeration date Apr 19, 2006

Last updated in NPPES Apr 10, 2023

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

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 134338 (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
206233	Other	NY	WELLCARE
000406953005	Other	NY	BLUE SHIELD
0499000	Other	NY	GHI
1001534	Medicaid	VT	-
17149	Other	NY	MVP
180045196	Other	NY	RAILROAD MEDICARE
409A91	Other	NY	BLUE CROSS
58812	Other	NY	GHI HMO
00652988	Medicaid	NY	-
10006172	Other	NY	CDPHP

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.

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Frequently asked questions

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.

What specialty is John Simon?

John Simon 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.

Other providers at this practice address

Browse all →

Jitka Zobal-Ratner Ophthalmology Physician · Latham, NY NPI 1720043383 Gerard Barry Ophthalmology Physician · Latham, NY NPI 1124289632 Peter Ness Pediatric Ophthalmology and Strabismus Specialist Physician · Latham, NY NPI 1376817999

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-04-10.