Quick answers
- Which hospitals does John R. Klein work at?
- Medicare's official clinician data lists John R. Klein at 1 hospital: St Joseph's Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John R. Klein see patients?
- Medicare's clinician data lists 3 practice locations, including Nogales, AZ, Green Valley, AZ and Tucson, AZ. Call before your visit to confirm the address.
- What is John R. Klein's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does John R. Klein accept Medicare assignment?
- Yes. Medicare's clinician data says John R. Klein 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 R. Klein?
- (520) 290-0961, as listed in official Medicare / NPI Registry data.
- What is John R. Klein's NPI number?
- 1508842881. 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 R. Klein works
Medicare's Facility Affiliation Data lists John R. Klein 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
Practice locations
Addresses where John R. Klein is enrolled with Medicare (CMS data updated 2026-10-02).
- 1209 E Target Range RdNogales, AZ 85621 (520) 290‑0961
- 400 W Camino Casa VerdeGreen Valley, AZ 85614 (520) 290‑0961
- 6618 E Carondelet DrTucson, AZ 85710 (520) 290‑0961
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Arizona
Clinicians with the same Medicare primary specialty in Arizona — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508842881 |
| 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