Thomas William Marston, MD
NPI 1487008975ActiveIndividual· Internal Medicine, Critical Care Medicine· Chandler, AZ
Internal Medicine, Critical Care Medicine (MD) with Banner - University Physician Specialists LLC and 1 other group, practicing in Chandler, Arizona. In 2024 Medicare paid $60,009 for 208 patients, and Part D covered 117 of their prescriptions, 45% of them generic. Penumbra, Inc. was the largest of 3 companies reporting payments in 2025, $227.20 in all, mostly food and beverage. Lists Banner - University Medical Center Phoenix as a hospital affiliation.
Overview
| NPI | 1487008975 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 20, 2016 |
| Last updated in NPPES | Dec 6, 2024 |
| Certified by provider | Dec 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Critical Care Medicine Primary | 207RC0200X | 66204 | AZ |
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 (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 208 |
|---|---|
| Services billed | 593 across 30 procedure codes |
| Paid by Medicare | $60,009 |
Part D prescriptions in 2024
| Prescriptions (claims) | 117 · 144 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $29,078 |
| Generic share | 45% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Banner - University Physician Specialists LLCPhoenix, AZ · 348 clinicians
- Banner - University Hospital Based Physicians LLCPhoenix, AZ · 339 clinicians
Hospital affiliation
- Banner - University Medical Center PhoenixPhoenix, AZ
Industry payments (Open Payments)
- 2025$227.20 · 3 payments from 3 companies
- 2024$460.00 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Penumbra, Inc. | $130.48 | 1 |
| Actelion Pharmaceuticals US, Inc. | $72.83 | 1 |
| Getinge USA Sales, LLC | $23.89 | 1 |
What the 2025 payments were for
- Food and Beverage$227.20 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 21 critical care physicians in Chandler · All critical care physicians in Arizona