Ridgely Oliver Muller, M.D.
NPI 1003920497ActiveIndividual· Emergency Medicine· Santa Rosa, CA
Emergency Medicine (M.D.) in Santa Rosa, California, trained at University of Southern California Keck School of Medicine (class of 1996). 677 Medicare patients in 2024, $99,949 paid; nearly all of their 651 Part D prescriptions were generic (98%).
Overview
| NPI | 1003920497 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 19, 2006 |
| Last updated in NPPES | Nov 9, 2021 |
| Certified by provider | Nov 9, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A64483 | 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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 677 |
|---|---|
| Services billed | 1,043 across 37 procedure codes |
| Paid by Medicare | $99,949 |
Part D prescriptions in 2024
| Prescriptions (claims) | 651 · 664 30-day fills |
|---|---|
| Patients | 287 |
| Total drug cost | $12,411 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Emergency Medicine |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliation
- Providence Santa Rosa Memorial HospitalSanta Rosa, 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 66 emergency medicine physicians in Santa Rosa · All emergency medicine physicians in California