Fay Ohsumi, MD
NPI 1427118850 · Nephrology Physician · New York, NY
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fay Ohsumi, MD is a Nephrology Physician provider in New York, NY (NPI 1427118850).
Provider details
- NPI number
- 1427118850
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 167316 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
60 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 34 | $201 |
| Insertion of Needle Into Vein (3 Years Or Older)36410 | 26 | $20 |
Typical Medicare-allowed amounts for these services range $20–$201 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 39 | 14 |
| Valsartan | 30 | — |
| Alprazolam | 25 | — |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 22 | — |
| Amlodipine Besylate/Valsartanbrand: Amlodipine-Valsartan | 18 | — |
| Carvedilol | 18 | — |
| Omeprazole | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-08
- Last updated
- 2010-02-26
Frequently asked questions
- What is Fay Ohsumi's NPI number?
- Fay Ohsumi's National Provider Identifier (NPI) is 1427118850, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fay Ohsumi's specialty?
- Fay Ohsumi is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Fay Ohsumi located?
- Fay Ohsumi's practice location on file with NPPES is 117 E 84th St, New York, NY 10028-0902.
- What is Fay Ohsumi's phone number?
- The practice phone number listed in the NPPES registry for Fay Ohsumi is (212) 288-8121.
- Does Fay Ohsumi accept Medicare?
- Fay Ohsumi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fay Ohsumi's NPI active?
- Yes — Fay Ohsumi's NPI (1427118850) is active in the NPPES registry as of the last update on 2010-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.