James Irwin Ewing, M.D.
NPI 1689837601ActiveIndividual· Internal Medicine, Medical Oncology· Glendale, AZ
Internal Medicine, Medical Oncology (M.D.) with Ironwood Physicians PC, practicing in Glendale, Arizona. In 2024 Medicare paid $3,464,674 for 565 patients, and Part D covered 1,420 of their prescriptions, 74% of them generic. Geron Corporation was the largest of 35 companies reporting payments in 2025, $6,892 in all, mostly consulting fees. Lists Honor Health John C. Lincoln Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1689837601 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 9, 2008 |
| Last updated in NPPES | Nov 17, 2022 |
| Certified by provider | Nov 17, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 47444 | 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 - Medical Oncology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 565 |
|---|---|
| Services billed | 176,304 across 127 procedure codes |
| Paid by Medicare | $3,464,674 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,420 · 2,238 30-day fills |
|---|---|
| Patients | 249 |
| Total drug cost | $3,749,244 |
| Generic share | 74% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Ironwood Physicians PCChandler, AZ · 116 clinicians
Hospital affiliations
- Honor Health John C. Lincoln Medical CenterPhoenix, AZ
- Honorhealth Scottsdale Osborn Medical CenterScottsdale, AZ
- Honorhealth Scottsdale Shea Medical CenterScottsdale, AZ
- Honorhealth Scottsdale Thompson Peak Med CtrScottsdale, AZ
Industry payments (Open Payments)
- 2025$6,892 · 114 payments from 35 companies
- 2024$5,495 · 99 payments from 31 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Geron Corporation | $3,715 | 9 |
| Astrazeneca Pharmaceuticals LP | $1,044 | 3 |
| Abbvie Inc. | $214.24 | 12 |
| E.R. Squibb & Sons, L.L.C. | $187.82 | 9 |
| Novartis Pharmaceuticals Corporation | $177.29 | 8 |
What the 2025 payments were for
- Consulting Fee$3,810 · 3 payments
- Food and Beverage$2,412 · 110 payments
- Travel and Lodging$670.54 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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