Mahesh Seetharam, MD, FACP
NPI 1487781175ActiveIndividual· Internal Medicine, Hematology & Oncology· Phoenix, AZ
Internal Medicine, Hematology & Oncology (MD, FACP) with Mayo Clinic Arizona and 1 other group, practicing in Phoenix, Arizona. In 2024 Medicare paid $3,824,977 for 1,009 patients, and Part D covered 299 of their prescriptions, 89% of them generic. Immunocore Limited was the largest of 6 companies reporting payments in 2025, $10,787 in all, mostly consulting fees. Lists Mayo Clinic Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1487781175 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, FACP |
| Sole proprietor | No |
| NPI issued | Feb 28, 2007 |
| Last updated in NPPES | Sep 10, 2020 |
| Certified by provider | Sep 10, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 43047 | AZ |
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 - Hematology/Oncology (AZ); Practitioner - Medical Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,009 |
|---|---|
| Services billed | 166,511 across 171 procedure codes |
| Paid by Medicare | $3,824,977 |
Part D prescriptions in 2024
| Prescriptions (claims) | 299 · 326 30-day fills |
|---|---|
| Patients | 82 |
| Total drug cost | $341,546 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Mayo Clinic ArizonaScottsdale, AZ · 1,626 clinicians
- Dhew Ind Hlth Sv Hlth Svs and Mntl Hlth AdmPhoenix, AZ · 227 clinicians
Hospital affiliations
- Mayo Clinic HospitalPhoenix, AZ
- Phoenix Indian Medical CenterPhoenix, AZ
Other facilities
- Amedisys Home Health CareHome health agency · Phoenix, AZ
Industry payments (Open Payments)
- 2025$10,787 · 9 payments from 6 companies
- 2024$561.66 · 6 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Immunocore Limited | $5,217 | 4 |
| Springworks Therapeutics, Inc. | $4,550 | 1 |
| Daiichi Sankyo Inc. | $826.50 | 1 |
| Tempus Ai, Inc | $127.25 | 1 |
| Novartis Pharmaceuticals Corporation | $34.45 | 1 |
What the 2025 payments were for
- Consulting Fee$5,377 · 2 payments
- Honoraria$4,500 · 2 payments
- Travel and Lodging$716.78 · 2 payments
- Food and Beverage$194.15 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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