Thomas Urban Marron, M.D. PH.D.
NPI 1821363029ActiveIndividual· Internal Medicine, Medical Oncology· New York, NY
Internal Medicine, Medical Oncology (M.D. PH.D.) in New York, New York, trained at Icahn School of Medicine at Mount Sinai (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $658,646 for 297 claims, against $25,663 paid for services in 2024. Abbvie Inc. was the largest of 8 companies reporting payments in 2025, $22,844 in all, mostly consulting fees.
Overview
| NPI | 1821363029 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. PH.D. |
| Sole proprietor | No |
| NPI issued | Mar 21, 2012 |
| Last updated in NPPES | Feb 26, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 272727 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Medical Oncology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 69 |
|---|---|
| Services billed | 213 across 6 procedure codes |
| Paid by Medicare | $25,663 |
Part D prescriptions in 2024
| Prescriptions (claims) | 297 · 408 30-day fills |
|---|---|
| Patients | 43 |
| Total drug cost | $658,646 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Medical Oncology |
Medical group
- Icahn School of Medicine at Mount SinaiNew York, NY · 2,843 clinicians
Hospital affiliation
- Mount Sinai HospitalNew York, NY
Other facilities
- Vns of Ny Home Care ChhaHome health agency · New York, NY
Industry payments (Open Payments)
- 2025$22,844 · 31 payments from 8 companies
- 2024$62,025 · 50 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $13,296 | 14 |
| Merck Sharp & Dohme LLC | $5,224 | 9 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $2,580 | 1 |
| Emd Serono Research & Development Institute, Inc. | $1,065 | 1 |
| Astrazeneca Pharmaceuticals LP | $234.40 | 2 |
What the 2025 payments were for
- Consulting Fee$20,545 · 10 payments
- Travel and Lodging$1,273 · 8 payments
- Food and Beverage$1,026 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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