William R. Marriott, M.D.
NPI 1003907494ActiveIndividual· Emergency Medicine· Dayton, OH
Emergency Medicine (M.D.) in Dayton, Ohio, trained at Wright State University Boonshoft School of Medicine (class of 1991). 166 Medicare patients in 2024, $20,720 paid; nearly all of their 74 Part D prescriptions were generic (92%).
Overview
| NPI | 1003907494 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 28, 2006 |
| Last updated in NPPES | Jul 21, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 35-063868 | OH |
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 (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 166 |
|---|---|
| Services billed | 178 across 13 procedure codes |
| Paid by Medicare | $20,720 |
Part D prescriptions in 2024
| Prescriptions (claims) | 74 · 74 30-day fills |
|---|---|
| Patients | 54 |
| Total drug cost | $1,452 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Wright State University Boonshoft School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Emergency Medicine |
Medical group
- Phs Emergency Billing LLCMiddletown, OH · 75 clinicians
Hospital affiliations
- Atrium Medical CenterFranklin, OH
- Miami Valley HospitalDayton, OH
- Upper Valley Medical CenterTroy, OH
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 131 emergency medicine physicians in Dayton · All emergency medicine physicians in Ohio