John Benjamin Colby, MD, PHD
NPI 1700205374ActiveIndividual· Radiology, Neuroradiology· Greenbrae, CA
Radiology, Neuroradiology (MD, PHD) in Greenbrae, California, trained at University of California, Geffen School of Medicine (class of 2014). Medicare paid $317,317 for services to 5,873 patients in 2024. Progenics Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $131.55 in all, mostly food and beverage.
Overview
| NPI | 1700205374 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Apr 10, 2014 |
| Last updated in NPPES | Jul 1, 2020 |
| Certified by provider | Jul 1, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Neuroradiology Primary | 2085N0700X | A139185 | CA |
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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 5,873 |
|---|---|
| Services billed | 9,931 across 211 procedure codes |
| Paid by Medicare | $317,317 |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Diagnostic Radiology |
| Secondary specialties | Interventional Radiology |
Medical groups
- California Advanced Imaging Medical Associates IncSan Francisco, CA · 88 clinicians
- Prima Medical FoundationGreenbrae, CA · 31 clinicians
Hospital affiliations
- Marinhealth Medical CenterGreenbrae, CA
- Novato Community HospitalNovato, CA
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA
- Sonoma Valley HospitalSonoma, CA
- UCSF Medical CenterSan Francisco, CA
Industry payments (Open Payments)
- 2025$131.55 · 2 payments from 2 companies
- 2024$120.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Progenics Pharmaceuticals, Inc. | $99.64 | 1 |
| Stryker Corporation | $31.91 | 1 |
What the 2025 payments were for
- Food and Beverage$131.55 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records