William Kayen, O.D.
NPI 1295802221 · Optometrist · New York, NY
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Kayen, O.D. is a Optometrist provider in New York, NY (NPI 1295802221).
Provider details
- NPI number
- 1295802221
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- T003826-1 (NY)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-28
- Last updated
- 2010-09-30
Frequently asked questions
- What is William Kayen's NPI number?
- William Kayen's National Provider Identifier (NPI) is 1295802221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Kayen's specialty?
- William Kayen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is William Kayen located?
- William Kayen's practice location on file with NPPES is 347 5th Ave, New York, NY 10016-5010.
- What is William Kayen's phone number?
- The practice phone number listed in the NPPES registry for William Kayen is (212) 868-2020.
- Does William Kayen accept Medicare?
- William Kayen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Kayen's NPI active?
- Yes — William Kayen's NPI (1295802221) is active in the NPPES registry as of the last update on 2010-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.