Gregory Haman, M.D.
NPI 1033590773ActiveIndividual· Internal Medicine· Willimantic, CT
Internal Medicine (M.D.) in Willimantic, Connecticut, trained at Harvard Medical School (class of 2015). Their prescriptions cost Medicare Part D more than their services did: $1,423,360 for 11,783 claims, against $97,519 paid for services in 2024.
Overview
| NPI | 1033590773 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 17, 2015 |
| Last updated in NPPES | May 6, 2020 |
| Certified by provider | May 6, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 65062 | CT |
| Internal Medicine | 207R00000X | 125066888 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CT); Practitioner - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 251 |
|---|---|
| Services billed | 1,113 across 34 procedure codes |
| Paid by Medicare | $97,519 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,783 · 28,386 30-day fills |
|---|---|
| Patients | 1,083 |
| Total drug cost | $1,423,360 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Harvard Medical School |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Hartford Healthcare Medical Group IncPutnam, CT · 267 clinicians
Hospital affiliations
- Hartford HospitalHartford, CT
- William W Backus HospitalNorwich, CT
- Windham Community Memorial HospitalWillimantic, CT
Other facilities
- Hartford Healthcare at HomeHome health agency · East Hartford, CT
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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