Gerald Brian Holtz, MD
NPI 1578649554ActiveIndividual· Radiology, Diagnostic Radiology· Naperville, IL
Radiology, Diagnostic Radiology (MD) in Naperville, Illinois, trained at Northwestern University Feinberg Medical School (class of 1968). Medicare paid $36,734 for services to 981 patients in 2024.
Overview
| NPI | 1578649554 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Oct 31, 2006 |
| Last updated in NPPES | Aug 26, 2026 |
| Certified by provider | Aug 26, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Diagnostic Radiology Primary | 2085R0202X | 036-044766 | IL |
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 (CA); Practitioner - Diagnostic Radiology (IL); Practitioner - Diagnostic Radiology (NY); Practitioner - Diagnostic Radiology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 981 |
|---|---|
| Services billed | 1,223 across 72 procedure codes |
| Paid by Medicare | $36,734 |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1968 |
| Medicare specialty | Diagnostic Radiology |
Medical groups
- Advanced Radiology and Interventional Associates IncStockton, CA · 104 clinicians
- San Joaquin Community HospitalBakersfield, CA · 59 clinicians
- Hanford Community HospitalHanford, CA · 59 clinicians
- Adventist Health Mendocino CoastFort Bragg, CA · 56 clinicians
- Sol Radiology IncSanta Ana, CA · 50 clinicians
- Adventist Health DelanoDelano, CA · 45 clinicians
- Radiologica IncDeer Park, NY · 43 clinicians
- Adventist Health TulareTulare, CA · 40 clinicians
Hospital affiliations
- Adventist Health DelanoDelano, CA
- Adventist Health HanfordHanford, CA
- Adventist Health Mendocino CoastFort Bragg, CA
- Adventist Health TulareTulare, CA
- Madera Community HospitalMadera, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 diagnostic radiologists in Naperville · All diagnostic radiologists in Illinois