Jack W. Grinnan, M.D.
NPI 1487090288ActiveIndividual· Urology· Mesa, AZ
Urology (M.D.) in Mesa, Arizona, trained at University of Texas Medical School at San Antonio (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $745,571 for 2,232 claims, against $179,948 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 23 companies reporting payments in 2025, $1,885 in all, mostly food and beverage.
Overview
| NPI | 1487090288 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 20, 2013 |
| Last updated in NPPES | Mar 21, 2025 |
| Certified by provider | Mar 21, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 55776 | AZ |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Urology (AZ); Practitioner - Urology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 503 |
|---|---|
| Services billed | 4,274 across 72 procedure codes |
| Paid by Medicare | $179,948 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,232 · 4,805 30-day fills |
|---|---|
| Patients | 635 |
| Total drug cost | $745,571 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Urology |
| Telehealth | Offers telehealth |
Medical groups
- Chesapeake Urology Associates LLCGermantown, MD · 177 clinicians
- Arizona Urology Specialists PLLCPhoenix, AZ · 84 clinicians
Hospital affiliations
- Banner Baywood Medical CenterMesa, AZ
- Banner Gateway Medical CenterGilbert, AZ
- Banner Payson Medical CenterPayson, AZ
- Saint Agnes HospitalBaltimore, MD
Industry payments (Open Payments)
- 2025$1,885 · 73 payments from 23 companies
- 2024$1,328 · 51 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $233.00 | 6 |
| Blue Earth Diagnostics | $230.19 | 8 |
| Ferring Pharmaceuticals Inc. | $185.08 | 9 |
| C. R. Bard, Inc. & Subsidiaries | $163.38 | 9 |
| Calyxo, Inc. | $143.86 | 2 |
What the 2025 payments were for
- Food and Beverage$1,885 · 73 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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