Quick answers
- Which hospitals does William K. Kwass work at?
- Medicare's official clinician data lists William K. Kwass at 2 hospitals: Banner - University Medical Center Phoenix and Baylor University Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William K. Kwass see patients?
- Medicare's clinician data lists 4 practice locations, including Phoenix, AZ, Tucson, AZ and Dallas, TX. Call before your visit to confirm the address.
- What is William K. Kwass's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does William K. Kwass accept Medicare assignment?
- Yes. Medicare's clinician data says William K. Kwass 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 William K. Kwass?
- (602) 839-2000, as listed in official Medicare / NPI Registry data.
- What is William K. Kwass's NPI number?
- 1669834446. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William K. Kwass works
Medicare's Facility Affiliation Data lists William K. Kwass at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Banner - University Medical Center PhoenixPhoenix, AZ · Acute Care Hospital · CCN 030002
- Baylor University Medical CenterDallas, TX · Acute Care Hospital · CCN 450021
Practice locations
Addresses where William K. Kwass is enrolled with Medicare (CMS data updated 2026-10-02).
- 1111 E McDowell RdPhoenix, AZ 85006 (602) 839‑2000
- 2424 N Wyatt Dr, Suite 160Tucson, AZ 85712 (520) 815‑5050
- 3500 Gaston AveDallas, TX 75246 (214) 820‑6356
- 5301 E Grant RdTucson, AZ 85712 (469) 340‑1366
Group practices
Medicare enrollment lists William K. Kwass as a member of these groups (CMS data updated 2026-10-02).
- U S Anesthesia Partners of Texas, PA2,752 clinicians in the group
- Banner - University Hospital Based Physicians LLC339 clinicians in the group
- Ias Arizona PLLC114 clinicians in the group
- Tucson Ambulatory Anesthesia LLC8 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Phoenix
Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669834446 |
| 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