Roslyn Chosak, M.D.
NPI 1528023181ActiveIndividual· Obstetrics & Gynecology, Gynecology· New Haven, CT
Obstetrics & Gynecology, Gynecology (M.D.) in New Haven, Connecticut, trained at Warren Alpert Medical School of Brown University (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $95,342 for 614 claims, against $24,736 paid for services in 2024. Sumitomo Pharma America, Inc. was the largest of 2 companies reporting payments in 2025, $167.92 in all, mostly food and beverage.
Overview
| NPI | 1528023181 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 18, 2006 |
| Last updated in NPPES | Nov 10, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecology Primary | 207VG0400X | 022991 | CT |
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 (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 154 |
|---|---|
| Services billed | 407 across 10 procedure codes |
| Paid by Medicare | $24,736 |
Part D prescriptions in 2024
| Prescriptions (claims) | 614 · 1,342 30-day fills |
|---|---|
| Patients | 178 |
| Total drug cost | $95,342 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | Warren Alpert Medical School of Brown University |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Obstetrics/Gynecology |
| Telehealth | Offers telehealth |
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Yale-New Haven HospitalNew Haven, CT
Industry payments (Open Payments)
- 2025$167.92 · 8 payments from 2 companies
- 2024$220.69 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $98.40 | 6 |
| Millicent US Inc | $69.52 | 2 |
What the 2025 payments were for
- Food and Beverage$122.92 · 7 payments
- Education$45.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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