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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

LYNN GERSTEIN
NPI 1841251519
Social Worker in Ithaca, NY

Active since March 31, 2006Opted out of Medicare · through Dec 11, 2026
CORNELL UNIVERSITY HEALTH SERVICES, HO PLAZA, ITHACA, NY 14853(607) 255-6946(607) 254-3503 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Lynn Gerstein NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LYNN GERSTEIN (NPI 1841251519) is an individual social worker in Ithaca, New York, licensed in New York (R028093-1) and active in the NPI registry since March 2006. She has opted out of Medicare through December 11, 2026.

NPPES Registry Identity

NPI1841251519
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameLYNN GERSTEIN
Location AddressCORNELL UNIVERSITY HEALTH SERVICES, HO PLAZAIthaca, NY 14853-3101
Mailing AddressCornell University Health Services, Ho PlazaIthaca, NY 14853-3101 · (607) 255-6946 · Fax (607) 254-3503
Phone(607) 255-6946
Fax(607) 254-3503
Sole ProprietorNo
Enumeration DateMarch 31, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1841251519 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in NY · R028093-1
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
CORNELL UNIVERSITY HEALTH SERVICES, Ithaca, NY 14853
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Lynn Gerstein has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from December 11, 2024 through December 11, 2026.

Opt-Out Effective DateDecember 11, 2024
Opt-Out In Effect ThroughDecember 11, 2026Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DIANE LOUISE SULLIVAN
Social Worker
CORNELL UNIVERSITY HEALTH SERVICES, HO PLAZA
ITHACA, NY 14853
Tompkins County (607) 255-6946
ROBIN GUSOW HAMLISCH
Social Worker
CORNELL UNIVERSITY HEALTH SERVICES, HO PLAZA
ITHACA, NY 14853
Tompkins County (607) 255-6946
DAVID WENTZEL D.O.
Family Medicine
CORNELL UNIVERSITY HEALTH SERVICES, HO PLAZA
ITHACA, NY 14853
Tompkins County (607) 255-6946
KENNETH MILES COHEN
Psychologist
CORNELL UNIVERSITY HEALTH SERVICES, HO PLAZA
ITHACA, NY 14853
Tompkins County (607) 255-6946
STEVEN L WOOD
Physical Therapy Assistant
CORNELL UNIVERSITY HEALTH SERVICES, HO PLAZA
ITHACA, NY 14853
Tompkins County (607) 255-6946
GAIL BROWN RN
Registered Nurse
CORNELL UNIVERSITY HEALTH SERVICES, HO PLAZA
ITHACA, NY 14853
Tompkins County (607) 255-6946
TRACEY DENARDO
Pharmacist
CORNELL UNIVERSITY HEALTH SERVICES, HO PLAZA
ITHACA, NY 14853
Tompkins County (607) 255-6946
ANNETTE FULLMER WALLUK RN
Registered Nurse
CORNELL UNIVERSITY HEALTH SERVICES, HO PLAZA
ITHACA, NY 14853
Tompkins County (607) 255-6946

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Lynn Gerstein's NPI number?

The NPI number for Lynn Gerstein is 1841251519. It was assigned to this individual provider in the NPPES registry on March 31, 2006.

Where is Lynn Gerstein located?

Lynn Gerstein practices at Cornell University Health Services Ho Plaza, Ithaca, NY 14853. The listed phone number is (607) 255-6946.

What is Lynn Gerstein's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Lynn Gerstein enrolled in Medicare?

No. Lynn Gerstein has opted out of Medicare through December 11, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Lynn Gerstein was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.