William A. Gilmartin, MD
NPI 1457454670ActiveIndividual· Internal Medicine· Hampton Bays, NY
Internal Medicine (MD) in Hampton Bays, New York, trained at Georgetown University School of Medicine (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $281,880 for 4,789 claims, against $152,312 paid for services in 2024. Lilly USA, LLC was the largest of 5 companies reporting payments in 2025, $200.50 in all, mostly food and beverage.
Overview
| NPI | 1457454670 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 6, 2006 |
| Last updated in NPPES | Apr 15, 2022 |
| Certified by provider | Apr 15, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 227116 | 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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 503 |
|---|---|
| Services billed | 1,990 across 30 procedure codes |
| Paid by Medicare | $152,312 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,789 · 8,838 30-day fills |
|---|---|
| Patients | 508 |
| Total drug cost | $281,880 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Meeting House Lane Medical Practice PCSouthampton, NY · 124 clinicians
Hospital affiliation
- Suny/Stony Brook University HospitalStony Brook, NY
Other facilities
- Tender Loving Care, An Amedisys CompanyHome health agency · Medford, NY
Industry payments (Open Payments)
- 2025$200.50 · 9 payments from 5 companies
- 2024$127.04 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $116.60 | 5 |
| Neurocrine Biosciences, Inc. | $29.02 | 1 |
| Exact Sciences Corporation | $21.57 | 1 |
| Pfizer Inc. | $17.10 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $16.21 | 1 |
What the 2025 payments were for
- Food and Beverage$200.50 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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