Mark L. Defazio, MD
NPI 1073586343ActiveIndividual· Obstetrics & Gynecology· Brooklyn, NY
Obstetrics & Gynecology (MD) in Brooklyn, New York, trained at State University of New York at Stony Brook, School of Medicine (class of 1986). In 2024 Medicare paid $30,526 for 101 patients, and Part D covered 70 of their prescriptions, 86% of them generic. Astellas Pharma US Inc was the largest of 3 companies reporting payments in 2025, $1,371 in all, mostly speaking and faculty fees.
Overview
| NPI | 1073586343 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Feb 8, 2006 |
| Last updated in NPPES | Sep 23, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 178425 | 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 | 101 |
|---|---|
| Services billed | 453 across 22 procedure codes |
| Paid by Medicare | $30,526 |
Part D prescriptions in 2024
| Prescriptions (claims) | 70 · 91 30-day fills |
|---|---|
| Patients | 33 |
| Total drug cost | $3,340 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Obstetrics/Gynecology |
| Telehealth | Offers telehealth |
Medical group
- De Fazio Obstetrics and Gynecology PCBrooklyn, NY · 2 clinicians
Industry payments (Open Payments)
- 2025$1,371 · 4 payments from 3 companies
- 2024$5,800 · 6 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $1,288 | 2 |
| Medtronic, Inc. | $70.29 | 1 |
| Organon LLC | $13.13 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$1,288 · 2 payments
- Food and Beverage$83.42 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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