Gerald D. Hagin, M.D.
NPI 1285606483ActiveIndividual· Internal Medicine, Medical Oncology· Tucson, AZ
Internal Medicine, Medical Oncology (M.D.) in Tucson, Arizona, trained at Icahn School of Medicine at Mount Sinai (class of 1975). Their prescriptions cost Medicare Part D more than their services did: $12,733 for 56 claims, against $7,412 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 11 companies reporting payments in 2025, $412.63 in all, mostly food and beverage.
Overview
| NPI | 1285606483 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 2, 2006 |
| Last updated in NPPES | Mar 18, 2022 |
| Certified by provider | Mar 18, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 10570 | AZ |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 10570 | 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 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 - Hematology/Oncology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 82 |
|---|---|
| Services billed | 113 across 9 procedure codes |
| Paid by Medicare | $7,412 |
Part D prescriptions in 2024
| Prescriptions (claims) | 56 · 78 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $12,733 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 1975 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Northern Arizona Healthcare CorporationFlagstaff, AZ · 385 clinicians
- The Oncology Institute Ca, A Professional CorporationSan Gabriel, CA · 113 clinicians
Hospital affiliation
- Verde Valley Medical CenterCottonwood, AZ
Industry payments (Open Payments)
- 2025$412.63 · 16 payments from 11 companies
- 2024$437.58 · 19 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $96.67 | 4 |
| Lilly USA, LLC | $68.46 | 2 |
| Merck Sharp & Dohme LLC | $43.86 | 2 |
| Sobi, Inc | $37.53 | 1 |
| Genmab U.S., Inc. | $34.07 | 1 |
What the 2025 payments were for
- Food and Beverage$412.63 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Medical Oncology providers in Arizona →