Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William Barry Kayen, OD

Individual provider Optometrist · NPI 1295802221

Dr. William Barry Kayen, OD is registered under Optometry in New York, New York. Graduated from Illinois College of Optometry at Chicago in 1979, 47 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in New York.

Years since qualifying
47
Trained at
Illinois College of Optometry at Chicago
Licensed in
NY
In the registry since
2006
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

347 5th Ave Ste 705
New York, NY 10016-5010 Not confirmed with CMS for 16 years — call before visiting
Phone: (212) 868-2020
Fax: (516) 374-3658
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence T003826-1 (NY)

Record details

NPI number1295802221
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedNovember 28, 2006
Last updated in NPPESSeptember 30, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPTOMETRY
Medical schoolILLINOIS COLLEGE OF OPTOMETRY AT CHICAGO
Graduated 1979 (47 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients19
Services billed 22 a service is one billed item, such as a visit, a test or a procedure
Average patient age84

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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