John J. McNerney Jr., M.D.
NPI 1568469583ActiveIndividual· Specialist· Tucson, AZ
Specialist (M.D.) in Tucson, Arizona, trained at Northwestern University Feinberg Medical School (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $767,625 for 2,547 claims, against $166,679 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 19 companies reporting payments in 2025, $3,041 in all, mostly food and beverage.
Overview
| NPI | 1568469583 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 5, 2005 |
| Last updated in NPPES | Jan 10, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 17464 | 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 - Gastroenterology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 922 |
|---|---|
| Services billed | 1,892 across 23 procedure codes |
| Paid by Medicare | $166,679 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,547 · 3,903 30-day fills |
|---|---|
| Patients | 1,380 |
| Total drug cost | $767,625 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Gastroenterology |
Medical group
- Tucson Gastroenterology Specialists, PCTucson, AZ · 6 clinicians
Hospital affiliation
- Tucson Medical CenterTucson, AZ
Industry payments (Open Payments)
- 2025$3,041 · 112 payments from 19 companies
- 2024$3,335 · 113 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $554.81 | 7 |
| Abbvie Inc. | $483.51 | 19 |
| Lilly USA, LLC | $255.15 | 9 |
| Janssen Biotech, Inc. | $251.57 | 10 |
| Aimmune Therapeutics, Inc. | $231.49 | 16 |
What the 2025 payments were for
- Food and Beverage$3,041 · 112 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 144 Specialist providers in Tucson · All Specialist providers in Arizona