Nina Ythier, LCSW
NPI 1770755340 · Social Worker · Ossining, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nina Ythier, LCSW is a Social Worker provider in Ossining, NY (NPI 1770755340).
Provider details
- NPI number
- 1770755340
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 0763831 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,056 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy, 1 Hour90837 | 1,056 | $125 |
Typical Medicare-allowed amounts for these services range $125–$125 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-03-24
- Last updated
- 2026-04-08
- Certified
- 2026-04-08
Frequently asked questions
- What is Nina Ythier's NPI number?
- Nina Ythier's National Provider Identifier (NPI) is 1770755340, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nina Ythier's specialty?
- Nina Ythier is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Nina Ythier located?
- Nina Ythier's practice location on file with NPPES is 17 Derby Ln, Ossining, NY 10562-2702.
- What is Nina Ythier's phone number?
- The practice phone number listed in the NPPES registry for Nina Ythier is (914) 426-7789.
- Does Nina Ythier accept Medicare?
- Nina Ythier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nina Ythier's NPI active?
- Yes — Nina Ythier's NPI (1770755340) is active in the NPPES registry as of the last update on 2026-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.