Quick answers
- Which hospitals does Stephen A. Mayer work at?
- Medicare's official clinician data lists Stephen A. Mayer at 4 hospitals: Benson Hospital, Canyon Vista Medical Center, Copper Queen Community Hospital and Yuma Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen A. Mayer see patients?
- Medicare's clinician data lists 2 practice locations, including Yuma, AZ and Sierra Vista, AZ. Call before your visit to confirm the address.
- What is Stephen A. Mayer's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Stephen A. Mayer accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen A. Mayer 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 Stephen A. Mayer?
- (928) 344-2000, as listed in official Medicare / NPI Registry data.
- What is Stephen A. Mayer's NPI number?
- 1982678975. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen A. Mayer works
Medicare's Facility Affiliation Data lists Stephen A. Mayer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Benson HospitalBenson, AZ · Critical Access Hospital · CCN 031301
- Canyon Vista Medical CenterSierra Vista, AZ · Acute Care Hospital · CCN 030043
- Copper Queen Community HospitalBisbee, AZ · Critical Access Hospital · CCN 031312
- Yuma Regional Medical CenterYuma, AZ · Acute Care Hospital · CCN 030013
Practice locations
Addresses where Stephen A. Mayer is enrolled with Medicare (CMS data updated 2026-10-02).
- 2400 S Ave AYuma, AZ 85364 (928) 344‑2000
- 5151 E Hwy 90Sierra Vista, AZ 85635 (520) 803‑6644
Group practices
Medicare enrollment lists Stephen A. Mayer as a member of these groups (CMS data updated 2026-10-02).
- Yuma Regional Medical Center361 clinicians in the group
- Cochise Oncology LLC6 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Yuma
Clinicians with the same Medicare primary specialty in Yuma, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982678975 |
| 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