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

Alyssa Flanagan Keyser, OD

Individual provider Optometrist · NPI 1427618123

Alyssa Flanagan Keyser, OD is an Optometry in Hampton Bays, New York. Graduated from Pennsylvania College of Optometry in 2019, 7 years ago. Practices with Legacy Optical Inc, a 3-clinician group and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
7
Trained at
Pennsylvania College of Optometry
Licensed in
NH
In the registry since
2019
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

4 Springville Rd Ste A
Hampton Bays, NY 11946-2290
Phone: (631) 728-3132
Fax: (316) 728-0976
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 988 (NH)

Record details

NPI number1427618123
Entity typeIndividual (Type 1)
GenderFemale
Credentials OD
Sole proprietorNo
NPI enumeratedJune 17, 2019
Last updated in NPPESJune 15, 2021
Certification dateJune 15, 2021

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolPENNSYLVANIA COLLEGE OF OPTOMETRY
Graduated 2019 (7 years in practice)
Group practice Legacy Optical Inc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Hampton Bays