Quick answers
- Which hospitals does Michael S. Walston work at?
- Medicare's official clinician data lists Michael S. Walston at 2 hospitals: St Joseph's Hospital and Tucson Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael S. Walston see patients?
- Medicare's clinician data lists 1 practice location in Tucson, AZ. Call before your visit to confirm the address.
- What is Michael S. Walston's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Michael S. Walston accept Medicare assignment?
- Yes. Medicare's clinician data says Michael S. Walston accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Michael S. Walston?
- (520) 795-7650, as listed in official Medicare / NPI Registry data.
- What is Michael S. Walston's NPI number?
- 1891095030. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael S. Walston works
Medicare's Facility Affiliation Data lists Michael S. Walston at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Joseph's HospitalTucson, AZ · Acute Care Hospital · CCN 030011
- Tucson Medical CenterTucson, AZ · Acute Care Hospital · CCN 030006
Practice locations
Addresses where Michael S. Walston is enrolled with Medicare (CMS data updated 2026-10-02).
- 3390 N Campbell AveTucson, AZ 85719 (520) 795‑7650
Group practices
Medicare enrollment lists Michael S. Walston as a member of this group (CMS data updated 2026-10-02).
- Southern Arizona Anesthesia Services PC42 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Tucson
Clinicians with the same Medicare primary specialty in Tucson, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Arizona College Of Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891095030 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians