Mark Vaynkhadler, M.D.
NPI 1548452352ActiveIndividual· Obstetrics & Gynecology· Brooklyn, NY
Obstetrics & Gynecology (M.D.) in Brooklyn, New York, trained at State University of Ny Upstate Medical University (class of 2003). In 2024 Medicare paid $27,571 for 44 patients, and Part D covered 238 of their prescriptions, 79% of them generic. Shield Therapeutics Inc was the largest of 7 companies reporting payments in 2025, $806.62 in all, mostly food and beverage.
Overview
| NPI | 1548452352 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 15, 2007 |
| Last updated in NPPES | Sep 6, 2024 |
| Certified by provider | Sep 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 245029 | NY |
| Obstetrics & Gynecology, Gynecology | 207VG0400X | 245029 | NY |
| Obstetrics & Gynecology, Obstetrics | 207VX0000X | 245029 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 44 |
|---|---|
| Services billed | 281 across 28 procedure codes |
| Paid by Medicare | $27,571 |
Part D prescriptions in 2024
| Prescriptions (claims) | 238 · 286 30-day fills |
|---|---|
| Patients | 57 |
| Total drug cost | $18,622 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | State University of Ny Upstate Medical University |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Dr Gregory Shifrin OB/GYN PCBrooklyn, NY · 5 clinicians
Industry payments (Open Payments)
- 2025$806.62 · 34 payments from 7 companies
- 2024$893.10 · 36 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Shield Therapeutics Inc | $214.57 | 10 |
| Sumitomo Pharma America, Inc. | $174.36 | 7 |
| Biogen, Inc. | $163.20 | 7 |
| Astellas Pharma US Inc | $117.84 | 4 |
| Hologic Sales and Service, LLC | $57.59 | 3 |
What the 2025 payments were for
- Food and Beverage$806.62 · 34 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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