William Ryan Foster, MD
Anesthesiology Physician · Tucson, AZ
William Ryan Foster, MD is an anesthesiology physician with a practice address in Tucson, Arizona, and NPI 1093204174, issued on May 4, 2018. Check the license (Arizona 65774, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Ryan Foster
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- 65774 AZ
R76655 AZ
165371 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5301 E Grant RD, Tucson, AZ 85712
- Phone
- (520) 324-2030
- Enumerated
- May 4, 2018
- Record last updated
- Oct 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20220913003988); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 2018
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,473 in Arizona → Look up another NPI →
Also registered at 5301 E Grant RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rand Al-Ani, MDStudent in an Organized Health Care Education/Training Program1528908928
Verify William Ryan Foster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 65774Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Ias Arizona PLLCTucson, AZ
- Northwest Hbp Medical Services LLCTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Ryan Foster among 1,473 anesthesiology physician records in Arizona
William Ryan Foster, MD is one of 1,473 anesthesiology physician records with a practice address in Arizona. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 87% of them.
- NPI issued2018 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2018 · median 2003 among the 984 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
298 anesthesiology physician records list a practice address in Tucson
They are 298 of the 18,788 NPPES records with a practice address in Tucson, and 1,473 anesthesiology physician records in Arizona.
All 1,473 in Arizona → Every provider in Tucson → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Matthew Atlas, MDTucson, AZ 857121679538532
- John Bentley, M.D.Tucson, AZ 857121689670523
- Casey Blitt, MDTucson, AZ 857121396700258
- Gary Bonwell, MDTucson, AZ 857121669437521
- Julien Caillet, MDTucson, AZ 857121366407223
- Brian Cammarata, MDTucson, AZ 857121639158579
- Songsiri Chanvitayapongs, MDTucson, AZ 857121538125471
- Adam Dadeppo, M.D.Tucson, AZ 857121427021799
Common questions
What is William Ryan Foster, MD's NPI number?
William Ryan Foster, MD's National Provider Identifier (NPI) is 1093204174, issued on May 4, 2018. An NPI identifies a provider in billing; it is not a license.
Where is William Ryan Foster, MD located?
The NPPES record lists a practice address at 5301 E Grant RD, Tucson, AZ, 85712. Phone: (520) 324-2030. Providers update this record themselves, so call before visiting.
How can I verify William Ryan Foster, MD's license?
NPPES lists Arizona license number 65774, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.