Quick answers
- Which hospitals does David B. Leff work at?
- Medicare's official clinician data lists David B. Leff at 1 hospital: Banner Gateway Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David B. Leff see patients?
- Medicare's clinician data lists 2 practice locations, including Mesa, AZ and Scottsdale, AZ. Call before your visit to confirm the address.
- What is David B. Leff's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does David B. Leff accept Medicare assignment?
- Yes. Medicare's clinician data says David B. Leff 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 David B. Leff?
- (480) 834-0771, as listed in official Medicare / NPI Registry data.
- What is David B. Leff's NPI number?
- 1619956505. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David B. Leff works
Medicare's Facility Affiliation Data lists David B. Leff at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Banner Gateway Medical CenterGilbert, AZ · Acute Care Hospital · CCN 030122
Practice locations
Addresses where David B. Leff is enrolled with Medicare (CMS data updated 2026-10-02).
- 3638 E Southern Ave, Suite C 108Mesa, AZ 85206 (480) 834‑0771
- 8761 E Bell Rd, Suite 105Scottsdale, AZ 85260 (480) 219‑6662
Group practices
Medicare enrollment lists David B. Leff as a member of these groups (CMS data updated 2026-10-02).
- Arizona Gastrointestinal Associates PLC36 clinicians in the group
- Central Arizona Medical Associates PC12 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Mesa
Clinicians with the same Medicare primary specialty in Mesa, AZ — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619956505 |
| 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