James Parker Gregg, MD
NPI 1518100049ActiveIndividual· Radiology, Diagnostic Radiology· Houston, TX
Radiology, Diagnostic Radiology (MD) in Houston, Texas, trained at University of Texas Medical Branch at Galveston (class of 2002). Medicare paid $77,928 for services to 2,578 patients in 2024. Okami Medical, Inc. was the largest of 5 companies reporting payments in 2025, $1,511 in all, mostly food and beverage.
Overview
| NPI | 1518100049 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 14, 2009 |
| Last updated in NPPES | Apr 6, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Diagnostic Radiology Primary | 2085R0202X | N5694 | TX |
| Radiology, Vascular & Interventional Radiology | 2085R0204X | N5694 | 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); Practitioner - Diagnostic Radiology (CO); Practitioner - Diagnostic Radiology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,578 |
|---|---|
| Services billed | 3,523 across 146 procedure codes |
| Paid by Medicare | $77,928 |
Education and affiliations
| Medical school | University of Texas Medical Branch at Galveston |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Diagnostic Radiology |
Medical groups
- Singleton Associates PATyler, TX · 838 clinicians
- Sonoran Radiology LtdTyler, TX · 475 clinicians
- Eagle Partners, PLLCHouston, TX · 171 clinicians
Hospital affiliations
- HCA Houston Healthcare ConroeConroe, TX
- HCA Houston Healthcare KingwoodKingwood, TX
- Memorial Hermann - Texas Medical CenterHouston, TX
- Memorial Hermann Hospital SystemHouston, TX
- Memorial Hermann Katy HospitalKaty, TX
Industry payments (Open Payments)
- 2025$1,511 · 9 payments from 5 companies
- 2024$394.15 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Okami Medical, Inc. | $1,216 | 3 |
| Sirtex Medical Inc | $177.11 | 2 |
| Trisalus Life Sciences, Inc. | $62.02 | 2 |
| Balt USA, LLC | $31.00 | 1 |
| Teleflex LLC | $24.78 | 1 |
What the 2025 payments were for
- Food and Beverage$1,511 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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