Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

General Surgery

Alyssa K. Stassi, DO

Works at hospitals in Phoenix, AZ · Mesa, AZ · Scottsdale, AZ · Arizona

Summary

Alyssa K. Stassi, DO (General Surgery) is listed by Medicare at 4 hospitals in Phoenix, AZ, Mesa, AZ and Scottsdale, AZ. NPI 1831464858. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Alyssa K. Stassi, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

General SurgeryPrimary specialty
YesAccepts Medicare assignment
14Years since medical school (graduated 2012)
Lake Erie College Of Osteopathic Medicine, ErieMedical school
FemaleGender (as listed)
HonorHealth AmbulatoryGroup practice (+1 more)

Quick answers

Which hospitals does Alyssa K. Stassi work at?
Medicare's official clinician data lists Alyssa K. Stassi at 4 hospitals: Honor Health John C. Lincoln Medical Center, HonorHealth Deer Valley Medical Center, HonorHealth Four Peaks Medical Center and HonorHealth Scottsdale Osborn Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Alyssa K. Stassi see patients?
Medicare's clinician data lists 3 practice locations, including Phoenix, AZ. Call before your visit to confirm the address.
What is Alyssa K. Stassi's specialty?
Medicare lists General Surgery as the primary specialty, and also Critical Care (Intensivists).
Does Alyssa K. Stassi accept Medicare assignment?
Yes. Medicare's clinician data says Alyssa K. Stassi 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 Alyssa K. Stassi?
(623) 516-4400, as listed in official Medicare / NPI Registry data.
What is Alyssa K. Stassi's NPI number?
1831464858. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Alyssa K. Stassi works

Medicare's Facility Affiliation Data lists Alyssa K. Stassi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Alyssa K. Stassi is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Alyssa K. Stassi as a member of these groups (CMS data updated 2026-10-02).

  • HonorHealth Ambulatory630 clinicians in the group
  • Shirah Surgical PLLC5 clinicians in the group

Specialties

Find other General Surgery doctors in Arizona →

Other general surgeons in Phoenix

Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.

All general surgeons in Phoenix →

Clinician information

CredentialDO
Medical schoolLake Erie College Of Osteopathic Medicine, Erie
Graduation year2012
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1831464858
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians