Bill M. Matheis, CRNA
- Medicare patients, 2024
- 91
- Hospital affiliations
- 1
- Industry payments
- $18
- Medical groups
- 10
- State license
- 1
- Practice address
- 901 San Bernardino Rd, Upland, CA 91786
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Antonio Ambulatory Surgical Center - HOPD
Acute Care Hospital outpatient department · Upland, California
Find Bill Matheis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Bill M. Matheis is a nurse anesthetist in Upland, California
Bill Matheis practices at San Antonio Ambulatory Surgical Center - HOPD in Upland, California.
Bill Matheis' NPI, 1184652653, was assigned on June 30, 2006. Bill Matheis holds California license NA 3057.
- NPI
- 1184652653NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597702555
- NPI enumeration date
- June 30, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Bill M. Matheis practices at San Antonio Ambulatory Surgical Center - HOPD in Upland, California
Bill Matheis' primary practice is San Antonio Ambulatory Surgical Center - HOPD, at 901 San Bernardino Rd, Upland, CA 91786.
- San Antonio Ambulatory Surgical Center - HOPD901 San Bernardino Rd, Upland, CA 91786
Source: Dmand AI Affiliation Data
Bill M. Matheis is affiliated with 6 sites of care and 10 medical groups
Bill Matheis' primary practice is San Antonio Ambulatory Surgical Center - HOPD in Upland, California. Bill Matheis is also affiliated with AHMC Anaheim Regional Medical Center. The medical group on file is Allied Anesthesia Medical Group. Dmand AI also links Bill Matheis to 9 more medical groups, 2 ambulatory surgery centers, 1 physician office and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Bill M. Matheis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Bill Matheis practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Antonio Ambulatory Surgical Center - HOPD | Available with a free account |
| +5 more sites and 9 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Bill M. Matheis is one of 2,410 nurse anesthetists in California
Nurse anesthetist, certified registered is Bill Matheis' primary specialty in the NPI Registry, under taxonomy code 367500000X. Bill Matheis is licensed in California.
Specialties and state licenses
- Certified registered nurse anesthetist, CaliforniaPrimary
Nurse anesthetists near Bill Matheis
Counts of nurse anesthetists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Bill M. Matheis treated 91 Medicare patients in 2024, average age 70
CMS counts 91 Medicare patients who saw Bill Matheis in 2024. The largest group is 65 to 74, with 46 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 58% are also on Medicaid. Their average risk score is 3.14, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Bill Matheis' median patient age at 56, with 55% women.
Bill Matheis' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Bill Matheis' Medicare patients by sex, 2024
- Women5358%
- Men3842%
Chronic conditions among Bill Matheis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Diabetes47%
- Anxiety43%
- Chronic kidney disease40%
- Mood disorders40%
- Heart failure37%
Share of Medicare patients with each condition. A patient can have several.
Bill Matheis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Bill M. Matheis takes part in Medicare
Bill Matheis accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Bill M. Matheis received $18 in industry payments in 2025
CMS Open Payments shows 1 general payment to Bill Matheis from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $18.
Companies that paid Bill Matheis the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Bill M. Matheis's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Bill M. Matheis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Bill M. Matheis' NPI number?
Bill M. Matheis' NPI number is 1184652653. It was assigned on June 30, 2006, and it is active in the NPI Registry.
What does Bill M. Matheis specialize in?
Bill M. Matheis is a nurse anesthetist in Upland, California. The primary specialty in the NPI Registry is Certified Registered Nurse Anesthetist (taxonomy code 367500000X).
Where does Bill M. Matheis practice?
Bill Matheis practices at 901 San Bernardino Rd, Upland, CA 91786. Bill Matheis' primary practice is San Antonio Ambulatory Surgical Center - HOPD in Upland, California. Dmand AI also links Bill Matheis to 9 medical groups, 2 ambulatory surgery centers, 1 physician office and 1 group practice or clinic.
What is Bill M. Matheis' medical license number?
Bill Matheis holds California license NA 3057.
Which hospitals is Bill M. Matheis affiliated with?
Bill Matheis is affiliated with AHMC Anaheim Regional Medical Center.
What medical group is Bill M. Matheis part of?
Bill Matheis is linked to Allied Anesthesia Medical Group. Dmand AI links Bill Matheis to 9 more medical groups.
Does Bill M. Matheis accept Medicare?
Yes. CMS lists Bill Matheis as accepting Medicare assignment.
How many Medicare patients does Bill M. Matheis see?
CMS counts 91 Medicare patients who saw Bill Matheis in 2024, with an average age of 70.
Has Bill M. Matheis received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Bill Matheis from 1 company from 2025 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Bill M. Matheis been practicing?
Bill Matheis graduated from medical school in 2003, 23 years ago.
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