Matthew Anthony Clark, DO
NPI 1639674591ActiveIndividual· Internal Medicine· Portland, ME
Internal Medicine (DO) in Portland, Maine, trained at University of New England, College of Osteo Medicine (class of 2018). In 2024 Medicare paid $22,522 for 107 patients, and Part D covered 81 of their prescriptions, 79% of them generic. Gilead Sciences, Inc. reported $18.00 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1639674591 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 24, 2018 |
| Last updated in NPPES | Jun 22, 2022 |
| Certified by provider | Jun 22, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | DO3200 | ME |
| Hospitalist | 208M00000X | DO3200 | ME |
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 (ME) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 107 |
|---|---|
| Services billed | 331 across 11 procedure codes |
| Paid by Medicare | $22,522 |
Part D prescriptions in 2024
| Prescriptions (claims) | 81 · 87 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $6,949 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | University of New England, College of Osteo Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Internal Medicine |
Medical group
- MainehealthPortland, ME · 2,633 clinicians
Hospital affiliation
- Mainehealth Maine Medical CenterPortland, ME
Industry payments (Open Payments)
- 2025$18.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $18.00 | 1 |
What the 2025 payments were for
- Food and Beverage$18.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 150 internal medicine physicians in Portland · All internal medicine physicians in Maine