Matthew Drew Grunwald, M.D.
NPI 1689061954ActiveIndividual· Internal Medicine, Gastroenterology· Portland, ME
Internal Medicine, Gastroenterology (M.D.) with Portland Gastroenterology Associates PA, practicing in Portland, Maine. Their prescriptions cost Medicare Part D more than their services did: $217,166 for 290 claims, against $59,025 paid for services in 2024. Fujifilm Healthcare Americas Corporation was the largest of 7 companies reporting payments in 2025, $421.09 in all, mostly food and beverage. Lists Maine General Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1689061954 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 23, 2015 |
| Last updated in NPPES | Dec 19, 2022 |
| Certified by provider | Dec 19, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MD25916 | ME |
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 - Gastroenterology (ME) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 232 |
|---|---|
| Services billed | 702 across 41 procedure codes |
| Paid by Medicare | $59,025 |
Part D prescriptions in 2024
| Prescriptions (claims) | 290 · 509 30-day fills |
|---|---|
| Patients | 132 |
| Total drug cost | $217,166 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Portland Gastroenterology Associates PAPortland, ME · 22 clinicians
Hospital affiliations
- Maine General Medical CenterAugusta, ME
- Mainehealth Maine Medical CenterPortland, ME
- Memorial Hospital, theNorth Conway, NH
Industry payments (Open Payments)
- 2025$421.09 · 11 payments from 7 companies
- 2024$231.46 · 9 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Fujifilm Healthcare Americas Corporation | $221.33 | 4 |
| Gilead Sciences, Inc. | $57.75 | 2 |
| Genzyme Corporation | $43.89 | 1 |
| Ipsen Biopharmaceuticals, Inc | $31.43 | 1 |
| Janssen Biotech, Inc. | $27.40 | 1 |
What the 2025 payments were for
- Food and Beverage$421.09 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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