Bill M. Matheis, C.R.N.A.
NPI 1184652653ActiveIndividual· Nurse Anesthetist, Certified Registered· Riverside, CA
Nurse Anesthetist, Certified Registered (C.R.N.A.) with Allied Anesthesia Medical Group Inc and 2 other groups, practicing in Riverside, California. Medicare paid $16,578 for services to 91 patients in 2024. Merck Sharp & Dohme LLC reported $17.56 in payments in 2025, mostly food and beverage. Lists Ahmc Anaheim Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1184652653 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | C.R.N.A. |
| Sole proprietor | No |
| NPI issued | Jun 30, 2006 |
| Last updated in NPPES | Jul 1, 2026 |
| Certified by provider | Jul 1, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Anesthetist, Certified Registered Primary | 367500000X | NA 3057 | 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 - Certified Registered Nurse Anesthetist (CRNA) (AZ); Practitioner - Certified Registered Nurse Anesthetist (CRNA) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 91 |
|---|---|
| Services billed | 105 across 41 procedure codes |
| Paid by Medicare | $16,578 |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Certified Registered Nurse Anesthetist (Crna) |
Medical groups
- Allied Anesthesia Medical Group IncOrange, CA · 191 clinicians
- Anesthesia Specialists of Orange County IncAnaheim, CA · 16 clinicians
- Aspen Anesthesia Services Pain Experts and Nursing Networks IncRiverside, CA · 9 clinicians
Hospital affiliation
- Ahmc Anaheim Regional Medical CenterAnaheim, CA
Industry payments (Open Payments)
- 2025$17.56 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $17.56 | 1 |
What the 2025 payments were for
- Food and Beverage$17.56 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 63 nurse anesthetists in Riverside · All nurse anesthetists in California