Quick answers
- Which hospitals does John B. Chastain work at?
- Medicare's official clinician data lists John B. Chastain at 4 hospitals: Northwest Medical Center, Oro Valley Hospital, San Carlos Apache Healthcare Corporation and Tucson Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John B. Chastain see patients?
- Medicare's clinician data lists 6 practice locations, including Peridot, AZ and Tucson, AZ. Call before your visit to confirm the address.
- What is John B. Chastain's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does John B. Chastain accept Medicare assignment?
- Yes. Medicare's clinician data says John B. Chastain 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 John B. Chastain?
- (928) 475-1400, as listed in official Medicare / NPI Registry data.
- What is John B. Chastain's NPI number?
- 1801915715. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John B. Chastain works
Medicare's Facility Affiliation Data lists John B. Chastain at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwest Medical CenterTucson, AZ · Acute Care Hospital · CCN 030085
- Oro Valley HospitalOro Valley, AZ · Acute Care Hospital · CCN 030114
- San Carlos Apache Healthcare CorporationPeridot, AZ · Critical Access Hospital · CCN 031320
- Tucson Medical CenterTucson, AZ · Acute Care Hospital · CCN 030006
Practice locations
Addresses where John B. Chastain is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 103 Medicine Way RdPeridot, AZ 85542 (928) 475‑1400
- 1358 W Orange Grove RdTucson, AZ 85704 (520) 575‑1272
- 2121 N Craycroft Rd, Bldg 5Tucson, AZ 85712 (520) 296‑8500
- 2450 E River RdTucson, AZ 85718 (520) 795‑7750
- P O Box, Suite 787Peridot, AZ 85542
Group practices
Medicare enrollment lists John B. Chastain as a member of these groups (CMS data updated 2026-10-02).
- San Carlos Apache Healthcare Corporation148 clinicians in the group
- Neurological Associates of Tucson61 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Arizona
Clinicians with the same Medicare primary specialty in Arizona — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Georgia School Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801915715 |
| 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