Quick answers
- Which hospitals does Wissam E. Mattar work at?
- Medicare's official clinician data lists Wissam E. Mattar at 1 hospital: HonorHealth Scottsdale Shea Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Wissam E. Mattar see patients?
- Medicare's clinician data lists 3 practice locations, including Scottsdale, AZ. Call before your visit to confirm the address.
- What is Wissam E. Mattar's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Wissam E. Mattar accept Medicare assignment?
- Yes. Medicare's clinician data says Wissam E. Mattar 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 Wissam E. Mattar?
- (480) 323-3000, as listed in official Medicare / NPI Registry data.
- What is Wissam E. Mattar's NPI number?
- 1831358092. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Wissam E. Mattar works
Medicare's Facility Affiliation Data lists Wissam E. Mattar at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- HonorHealth Scottsdale Shea Medical CenterScottsdale, AZ · Acute Care Hospital · CCN 030087
Practice locations
Addresses where Wissam E. Mattar is enrolled with Medicare (CMS data updated 2026-10-02).
- 10510 N 92nd StScottsdale, AZ 85258
- 9003 E Shea BlvdScottsdale, AZ 85260 (480) 323‑3000
- 9003 E Shea Blvd, Suite HgScottsdale, AZ 85260 (480) 323‑4973
Group practices
Medicare enrollment lists Wissam E. Mattar as a member of this group (CMS data updated 2026-10-02).
- HonorHealth Ambulatory630 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Scottsdale
Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1831358092 |
| 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