BILL M MATHEIS C.R.N.A.
NPI 1184652653
Nurse Anesthetist, Certified Registered in Riverside, CA
About Bill M Matheis C.r.n.a. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BILL M MATHEIS C.R.N.A. (NPI 1184652653) is an individual nurse anesthetist, certified registered in Riverside, California, licensed in California (NA 3057) and active in the NPI registry since June 2006. He is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Bill M Matheis C.r.n.a. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
11Medicare enrollment records show Bill Matheis reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rancho Cucamonga, CA 91730
- Reassigned Medicare billing, California enrollment
- 66 clinicians in this Medicare group
Redlands, CA 92373
- Reassigned Medicare billing, California enrollment
- 241 clinicians in this Medicare group
Orange, CA 92869
- Reassigned Medicare billing, California enrollment
- 168 clinicians in this Medicare group
Murrieta, CA 92563
- Reassigned Medicare billing, California enrollment
- 137 clinicians in this Medicare group
Anaheim, CA 92801
- Reassigned Medicare billing, California enrollment
- 73 clinicians in this Medicare group
Hemet, CA 92544
- Reassigned Medicare billing, California enrollment
- 24 clinicians in this Medicare group
Rancho Mirage, CA 92270
- Reassigned Medicare billing, California enrollment
- 96 clinicians in this Medicare group
Fresno, CA 93720
- Reassigned Medicare billing, California enrollment
- 293 clinicians in this Medicare group
Salinas, CA 93906
- Reassigned Medicare billing, California enrollment
- 68 clinicians in this Medicare group
Sierra Vista, AZ 85635
- Reassigned Medicare billing, Arizona enrollment
- 132 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Bill Matheis's NPI number?
The NPI number for Bill Matheis is 1184652653. It was assigned to this individual provider in the NPPES registry on June 30, 2006.
Where is Bill Matheis located?
Bill Matheis practices at 12516 Locke Cir, Riverside, CA 92503. The listed phone number is (951) 295-5707.
What is Bill Matheis's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Bill Matheis enrolled in Medicare?
Yes. Bill Matheis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Bill Matheis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Bill Matheis reassigns Medicare benefits to 11 organizations: Lgibson Anesthesia Inc (Rancho Cucamonga, CA), Darin Rentz Do PC (Redlands, CA), Orange Coast Anesthesia Inc (Orange, CA), Sound Physicians Anesthesiology Of California PC (Murrieta, CA), Anesthesia Specialists Of Orange County, Inc. (Anaheim, CA) and 6 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Bill Matheis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Bill Matheis was last updated on July 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Bill M Matheis, C.R.N.A. · NPI 1184652653
Nurse Anesthetist, Certified Registered physician in Riverside, California. Individual provider, active in the CMS NPPES registry since June 30, 2006.
## Identity
- **NPI:** 1184652653 (Entity type: Individual)
- **Enumerated:** June 30, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** NA 3057 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 12516 LOCKE CIR, Riverside, CA 92503-5914
- **Phone:** (951) 295-5707
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 11 organizations under Medicare reassignment (form CMS-855R): Lgibson Anesthesia Inc (NPI 1417473323, Rancho Cucamonga, CA); Darin Rentz Do PC (NPI 1689321747, Redlands, CA); Orange Coast Anesthesia Inc (NPI 1508138256, Orange, CA); Sound Physicians Anesthesiology Of California PC (NPI 1699408229, Murrieta, CA); Anesthesia Specialists Of Orange County, Inc. (NPI 1134311319, Anaheim, CA); and 6 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** July 1, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1184652653) · Data from the CMS NPPES public registry.