Jason Gonsky, M.D., PH.D.
NPI 1184835035 · Hematology & Oncology Physician · Brooklyn, NY
Enrolled with Medicare as Order and Referring Only - Hematology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Gonsky, M.D., PH.D. is a Hematology & Oncology Physician provider in Brooklyn, NY (NPI 1184835035).
Provider details
- NPI number
- 1184835035
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 236096 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 50 | 17 |
| Lenalidomide | 23 | — |
| Abiraterone Acetate | 19 | — |
| Dexamethasone | 17 | — |
| Prednisone | 14 | — |
| Enzalutamidebrand: Xtandi | 13 | — |
| Acyclovir | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$183 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-24
- Last updated
- 2009-08-14
Frequently asked questions
- What is Jason Gonsky's NPI number?
- Jason Gonsky's National Provider Identifier (NPI) is 1184835035, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Gonsky's specialty?
- Jason Gonsky is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Gonsky located?
- Jason Gonsky's practice location on file with NPPES is 451 Clarkson Ave Building a Fl 7, Brooklyn, NY 11203-2054.
- What is Jason Gonsky's phone number?
- The practice phone number listed in the NPPES registry for Jason Gonsky is (718) 245-2770.
- Does Jason Gonsky accept Medicare?
- Jason Gonsky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Gonsky's NPI active?
- Yes — Jason Gonsky's NPI (1184835035) is active in the NPPES registry as of the last update on 2009-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.