Michael Sherwin Walston, M.D.
Anesthesiology Physician · Tucson, AZ
Michael Sherwin Walston, M.D. is an anesthesiology physician with a practice address in Tucson, Arizona, and NPI 1891095030, issued on Oct 21, 2010. Check the license (Arizona 47974, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael Sherwin Walston
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 47974 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3390 N. Campbell Ave., Tucson, AZ 85719
- Phone
- (520) 795-7650
- Enumerated
- Oct 21, 2010
- Record last updated
- Dec 4, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130912000232); accepts Medicare assignment
- Medical or professional school
- University Of Arizona College Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,473 in Arizona → Look up another NPI →
Also registered at 3390 N. Campbell Ave.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ryan Frieder, D.O.Anesthesiology Physician1083750509
Verify Michael Sherwin Walston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 47974Check 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 one group practice
- Southern Arizona Anesthesia Services PCTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Sherwin Walston among 1,473 anesthesiology physician records in Arizona
Michael Sherwin Walston, M.D. 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 2010, is newer than 70% of them.
- NPI issued2010 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2010 · median 2003 among the 984 with a school on file
- Record last updated2014 · 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
- Lynn Bianchi, MDTucson, AZ 857191619969938
- Tony Borboa, M.D.Tucson, AZ 857191487646956
- Jenny Brick, MDTucson, AZ 857191417940461
- Steven Brower, MDTucson, AZ 857191134112196
- James Cain, MDTucson, AZ 857191922091982
- Charles Clark, MDTucson, AZ 857191710970785
- Murray Dangelo, MDTucson, AZ 857191619960424
- Jeffrey Dowling, MDTucson, AZ 857191881687648
Common questions
What is Michael Sherwin Walston, M.D.'s NPI number?
Michael Sherwin Walston, M.D.'s National Provider Identifier (NPI) is 1891095030, issued on Oct 21, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Michael Sherwin Walston, M.D. located?
The NPPES record lists a practice address at 3390 N. Campbell Ave., Tucson, AZ, 85719. Phone: (520) 795-7650. Providers update this record themselves, so call before visiting.
How can I verify Michael Sherwin Walston, M.D.'s license?
NPPES lists Arizona license number 47974, 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.