Alyssa Gillego, M.D.
NPI 1659567352ActiveIndividual· Surgery· Greenwich, CT
Surgery (M.D.) with Yale University, practicing in Greenwich, Connecticut. Mostly services rather than prescriptions: Medicare paid $21,993 for 113 patients in 2024, with only 14 Part D claims. Axogen reported $425.92 in payments in 2025, mostly food and beverage. Lists Greenwich Hospital Association - as a hospital affiliation.
Overview
| NPI | 1659567352 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 18, 2007 |
| Last updated in NPPES | Nov 13, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 056739 | CT |
| Surgery | 208600000X | 252073 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 113 |
|---|---|
| Services billed | 157 across 10 procedure codes |
| Paid by Medicare | $21,993 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14 · 28 30-day fills |
|---|---|
| Total drug cost | $5,852 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | General Surgery |
Medical group
- Yale UniversityNew Haven, CT · 2,645 clinicians
Hospital affiliation
- Greenwich Hospital Association -Greenwich, CT
Industry payments (Open Payments)
- 2025$425.92 · 8 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axogen | $425.92 | 8 |
What the 2025 payments were for
- Food and Beverage$425.92 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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