Holly S. Mason, M.D.
NPI 1033201462ActiveIndividual· Surgery· Springfield, MA
Surgery (M.D.) in Springfield, Massachusetts, trained at University of Vermont College of Medicine (class of 1995). Mostly services rather than prescriptions: Medicare paid $46,936 for 93 patients in 2024, with only 23 Part D claims. Organon LLC was the largest of 2 companies reporting payments in 2025, $67.65 in all, mostly food and beverage.
Overview
| NPI | 1033201462 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 30, 2006 |
| Last updated in NPPES | Jan 18, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 213644 | MA |
| Surgery, Surgical Oncology | 2086X0206X | 213644 | MA |
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 - Surgical Oncology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 93 |
|---|---|
| Services billed | 230 across 26 procedure codes |
| Paid by Medicare | $46,936 |
Part D prescriptions in 2024
| Prescriptions (claims) | 23 · 31 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $122.60 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Vermont College of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Surgical Oncology |
| Secondary specialties | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- Baystate Medical Practices IncSpringfield, MA · 1,369 clinicians
Hospital affiliations
- Baystate Franklin Medical CenterGreenfield, MA
- Baystate Medical CenterSpringfield, MA
- Baystate Noble HospitalWestfield, MA
Other facilities
- Baystate Home HealthHome health agency · W Springfield, MA
Industry payments (Open Payments)
- 2025$67.65 · 4 payments from 2 companies
- 2024$75.89 · 4 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organon LLC | $39.96 | 3 |
| Janssen Biotech, Inc. | $27.69 | 1 |
What the 2025 payments were for
- Food and Beverage$67.65 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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