Quick answers
- Which hospitals does Jonathan Ashman work at?
- Medicare's official clinician data lists Jonathan Ashman at 1 hospital: Mayo Clinic Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan Ashman see patients?
- Medicare's clinician data lists 1 practice location in Scottsdale, AZ. Call before your visit to confirm the address.
- What is Jonathan Ashman's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Jonathan Ashman accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan Ashman 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.
- Does Jonathan Ashman offer telehealth?
- Medicare's clinician data says Jonathan Ashman offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Jonathan Ashman?
- (480) 301-8000, as listed in official Medicare / NPI Registry data.
- What is Jonathan Ashman's NPI number?
- 1659337566. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathan Ashman works
Medicare's Facility Affiliation Data lists Jonathan Ashman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mayo Clinic HospitalPhoenix, AZ · Acute Care Hospital · CCN 030103
Practice locations
Addresses where Jonathan Ashman is enrolled with Medicare (CMS data updated 2026-10-02).
- 13400 E Shea BlvdScottsdale, AZ 85259 (480) 301‑8000
Group practices
Medicare enrollment lists Jonathan Ashman as a member of this group (CMS data updated 2026-10-02).
- Mayo Clinic Arizona1,626 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Scottsdale
Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1659337566 |
| 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