John P. Karis, M.D.
NPI 1609841790ActiveIndividual· Radiology, Neuroradiology· Phoenix, AZ
Radiology, Neuroradiology (M.D.) in Phoenix, Arizona, trained at Duke University School of Medicine (class of 1987). Medicare paid $85,496 for services to 1,064 patients in 2024. Philips North America LLC was the largest of 3 companies reporting payments in 2025, $5,356 in all, mostly honoraria.
Overview
| NPI | 1609841790 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 22, 2006 |
| Last updated in NPPES | Sep 22, 2026 |
| Certified by provider | Sep 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Neuroradiology Primary | 2085N0700X | 22185 | AZ |
| Radiology, Diagnostic Radiology | 2085R0202X | 22185 | AZ |
| Radiology, Diagnostic Radiology | 2085R0202X | W3695 | TX |
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 - Diagnostic Radiology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,064 |
|---|---|
| Services billed | 1,880 across 61 procedure codes |
| Paid by Medicare | $85,496 |
Education and affiliations
| Medical school | Duke University School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Diagnostic Radiology |
Medical group
- Southwest Neuro-Imaging LtdPhoenix, AZ · 8 clinicians
Hospital affiliations
- St Josephs Hospital and Medical CenterPhoenix, AZ
- Yavapai Regional Medical CenterPrescott, AZ
- Yuma Regional Medical CenterYuma, AZ
Industry payments (Open Payments)
- 2025$5,356 · 5 payments from 3 companies
- 2024$247.65 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Philips North America LLC | $5,120 | 1 |
| Ge Healthcare | $194.46 | 3 |
| Siemens Medical Solutions USA, Inc. | $41.48 | 1 |
What the 2025 payments were for
- Honoraria$5,120 · 1 payment
- Food and Beverage$235.94 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 22 Radiology, Neuroradiology providers in Phoenix · All Radiology, Neuroradiology providers in Arizona