Melissa Anne Munsell, M.D.
NPI 1134276272ActiveIndividual· Internal Medicine, Gastroenterology· Torrance, CA
Internal Medicine, Gastroenterology (M.D.) in Torrance, California, trained at University of Chicago, Pritzker School of Medicine (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $94,793 for 375 claims, against $42,945 paid for services in 2024. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $944.90 in all, mostly food and beverage.
Overview
| NPI | 1134276272 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 4, 2007 |
| Last updated in NPPES | Nov 22, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A108004 | CA |
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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 207 |
|---|---|
| Services billed | 537 across 17 procedure codes |
| Paid by Medicare | $42,945 |
Part D prescriptions in 2024
| Prescriptions (claims) | 375 · 752 30-day fills |
|---|---|
| Patients | 129 |
| Total drug cost | $94,793 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- South Bay Gastroenterology Medical GroupTorrance, CA · 12 clinicians
Hospital affiliation
- Torrance Memorial Medical CenterTorrance, CA
Industry payments (Open Payments)
- 2025$944.90 · 51 payments from 10 companies
- 2024$1,002 · 52 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $443.10 | 27 |
| Madrigal Pharmaceuticals | $145.23 | 7 |
| Janssen Biotech, Inc. | $129.65 | 7 |
| Ardelyx, Inc. | $80.81 | 3 |
| Pfizer Inc. | $37.10 | 2 |
What the 2025 payments were for
- Food and Beverage$944.90 · 51 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Torrance
- 1033479795
- 1033539945
- 1043637234
- 1114303302
- 1114957057
- 1174512172
- 1174565527
- 1184613382
- 1265470280
- 1285951905
- 1316164171
- 1346433828
All 58 gastroenterologists in Torrance · All gastroenterologists in California