Quick answers
- Where does John R. Tesser see patients?
- Medicare's clinician data lists 1 practice location in Phoenix, AZ. Call before your visit to confirm the address.
- What is John R. Tesser's specialty?
- Medicare lists Rheumatology as the primary specialty.
- Does John R. Tesser accept Medicare assignment?
- Yes. Medicare's clinician data says John R. Tesser 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 John R. Tesser offer telehealth?
- Medicare's clinician data says John R. Tesser offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John R. Tesser?
- (480) 443-8400, as listed in official Medicare / NPI Registry data.
- What is John R. Tesser's NPI number?
- 1427049220. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John R. Tesser is enrolled with Medicare (CMS data updated 2026-10-02).
- 4550 E Bell Rd, Suite 170Phoenix, AZ 85032 (480) 443‑8400
Group practices
Medicare enrollment lists John R. Tesser as a member of this group (CMS data updated 2026-10-02).
- Arizona Arthritis and Rheumatology Associates P C65 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Phoenix
Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Rochester School Of Medicine And Dentistry |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1427049220 |
| 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
- 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