John Michael Lamancuso, MD, FACP
NPI 1861436719ActiveIndividual· Internal Medicine· Jamestown, NY
Internal Medicine (MD, FACP) in Jamestown, New York, trained at State University of New York at Buffalo School of Medicine (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $975,838 for 15,482 claims, against $110,934 paid for services in 2024.
Overview
| NPI | 1861436719 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, FACP |
| Sole proprietor | No |
| NPI issued | Jun 15, 2006 |
| Last updated in NPPES | Jan 25, 2024 |
| Certified by provider | May 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 142873-01 | 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 | 577 |
|---|---|
| Services billed | 2,378 across 33 procedure codes |
| Paid by Medicare | $110,934 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15,482 · 38,033 30-day fills |
|---|---|
| Patients | 835 |
| Total drug cost | $975,838 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | State University of New York at Buffalo School of Medicine |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Internal Medicine |
Medical group
- Great Lakes Physician Practice PCDunkirk, NY · 144 clinicians
Hospital affiliations
- Upmc Chautauqua at WcaJamestown, NY
- Warren General HospitalWarren, PA
Other facilities
- Vna of Western Ny ChhaHome health agency · Cheektowaga, NY
- Willcare Chha (Buffalo)Home health agency · Amherst, NY
- Chautauqua Hospice and Palliative CareHospice · Lakewood, NY
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 internal medicine physicians in Jamestown · All internal medicine physicians in New York