Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Nina Ythier, LCSW

Individual provider Social Worker · NPI 1770755340

Nina Ythier, LCSW is a Clinical Social Worker in Ossining, New York. Qualified in 2005, 21 years ago. Practices with Nina Ythier LCSW PC, a 5-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
21
Licensed in
NY
In the registry since
2008
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

17 Derby Ln
Ossining, NY 10562-2702
Phone: (914) 426-7789
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 0763831 (NY)

Record details

NPI number1770755340
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedMarch 24, 2008
Last updated in NPPESApril 8, 2026
Certification dateApril 8, 2026

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Nina Ythier Lcsw Pc — 5 clinicians
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 patients29
Services billed 1,491 a service is one billed item, such as a visit, a test or a procedure
Average patient age52

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.

Colleagues at Nina Ythier LCSW PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Ossining