William B. Gregory, MD
NPI 1659337350ActiveIndividual· Emergency Medicine· Pasadena, CA
Emergency Medicine (MD) in Pasadena, California, trained at Medical University of South Carolina College of Medicine (class of 1999). In 2024 Medicare paid $13,175 for 132 patients, and Part D covered 112 of their prescriptions, 86% of them generic.
Overview
| NPI | 1659337350 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 22, 2006 |
| Last updated in NPPES | Jun 13, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A78714 | 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 - Emergency Medicine (NV); Practitioner - Emergency Medicine (SC); Practitioner - Emergency Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 132 |
|---|---|
| Services billed | 165 across 15 procedure codes |
| Paid by Medicare | $13,175 |
Part D prescriptions in 2024
| Prescriptions (claims) | 112 · 118 30-day fills |
|---|---|
| Patients | 76 |
| Total drug cost | $3,592 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Emergency Medicine |
Medical groups
- Third Coast Emergency Physicians Southwest PASan Antonio, TX · 40 clinicians
- Hospitalist Medicine Physicians of Texas - Cypress PLLCBonham, TX · 27 clinicians
- Daniel Island Emergency Physicians, LLCCharleston, SC · 12 clinicians
Hospital affiliations
- Baylor Scott and White Emergency HospitalBurleson, TX
- Northern Nevada Medical CenterSparks, NV
- Tmc- Bonham HospitalBonham, TX
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 57 emergency medicine physicians in Pasadena · All emergency medicine physicians in California