Sergey Zasypayko, M.D
NPI 1992961775ActiveIndividual· Internal Medicine· Branford, CT
Internal Medicine (M.D) with City Medical of Upper East Side PLLC and 2 other groups, practicing in Branford, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $281,776 for 500 claims, against $26,350 paid for services in 2024. Jazz Pharmaceuticals Inc. was the largest of 7 companies reporting payments in 2025, $980.16 in all, mostly food and beverage. Lists Good Samaritan Hospital Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1992961775 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | Yes |
| NPI issued | Jul 31, 2008 |
| Last updated in NPPES | Jan 16, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 048353 | CT |
| Internal Medicine, Sleep Medicine | 207RS0012X | 249366 | 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 - Sleep Medicine (CT); Practitioner - Hospitalist (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 199 |
|---|---|
| Services billed | 389 across 40 procedure codes |
| Paid by Medicare | $26,350 |
Part D prescriptions in 2024
| Prescriptions (claims) | 500 · 542 30-day fills |
|---|---|
| Patients | 216 |
| Total drug cost | $281,776 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Hospitalist |
| Secondary specialties | Emergency Medicine, Internal Medicine |
Medical groups
- City Medical of Upper East Side PLLCAstoria, NY · 658 clinicians
- Southwest Suffolk Medical PCSmithtown, NY · 199 clinicians
- Pulmonary Care, PCHamden, CT · 8 clinicians
Hospital affiliations
- Good Samaritan Hospital Medical CenterWest Islip, NY
- Jamaica Hospital Medical CenterJamaica, NY
Industry payments (Open Payments)
- 2025$980.16 · 29 payments from 7 companies
- 2024$307.66 · 10 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Jazz Pharmaceuticals Inc. | $286.56 | 5 |
| Avadel Cns Pharmaceuticals, LLC | $218.51 | 2 |
| Harmony Biosciences LLC | $217.41 | 7 |
| Axsome Therapeutics, Inc. | $197.42 | 12 |
| Pfizer Inc. | $29.53 | 1 |
What the 2025 payments were for
- Food and Beverage$519.17 · 25 payments
- Consulting Fee$350.00 · 2 payments
- Education$110.99 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 33 internal medicine physicians in Branford · All internal medicine physicians in Connecticut