William A. Faubion Jr., MD

Medicare activity in 2024

Official CMS public-use data for William A. Faubion Jr., data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Biopsy of large bowel using a flexible endoscope (45380)22 services
2. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)14 services
3. Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)13 services
4. Biopsy of lower large bowel using a flexible endoscope (45331)11 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Arthritis45%
• Ischemic heart disease44%
• Chronic kidney disease40%
• Atrial fibrillation35%

Hospitals where William A. Faubion Jr. works

Medicare's Facility Affiliation Data lists William A. Faubion Jr. at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Mayo Clinic HospitalPhoenix, AZ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 030103

Practice locations

Addresses where William A. Faubion Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 13400 E Shea BlvdScottsdale, AZ 85259 (480) 301‑8000

Group practices

Medicare enrollment lists William A. Faubion Jr. as a member of this group (CMS data updated October 2, 2026).

• Mayo Clinic Arizona1,626 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in Arizona →

Other gastroenterologists in Scottsdale

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

• Anil B. Seetharam, MD
• Archna A. Patel, MD
• Francisco C. Ramirez, MD
• Stuart L. Triester, MD
• Vijay P. Singh, MD
• Pankaj Pasricha, MD
• John K. Dibaise, MD
• Janet R. Reiser, MD

All gastroenterologists in Scottsdale →

Other clinicians in Mayo Clinic Arizona

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Xiaoyan Liao, MD
• Michelle Nguyen, MD
• William G. Eversman, MD
• Mark R. Wallace, MD
• Umesh Goswami, MD
• Andrea Fillers, NP

Clinician information

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 October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians