Justin L. Sewell, MD

Medicare activity in 2024

Official CMS public-use data for Justin L. Sewell, 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. Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (G0500)60 services
2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)38 services
3. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)33 services
4. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)29 services
5. Biopsy of large bowel using a flexible endoscope (45380)17 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 cholesterol54%
• Diabetes43%
• Arthritis30%
• Ischemic heart disease28%
• Chronic kidney disease28%

Hospitals where Justin L. Sewell works

Medicare's Facility Affiliation Data lists Justin L. Sewell 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.

• Zuckerberg San Francisco General Hospital & Trauma CenterSan Francisco, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050228

Practice locations

Addresses where Justin L. Sewell is enrolled with Medicare (CMS data updated October 2, 2026).

• 1001 Potrero AveSan Francisco, CA 94110 (628) 206‑8823

Group practices

Medicare enrollment lists Justin L. Sewell as a member of this group (CMS data updated October 2, 2026).

• University of California SFGH Medical Group587 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in California →

Other gastroenterologists in San Francisco

Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.

• Sara M. Lewin, MD
• Richard T. Frederick, MD
• Jessica Rubin, MD
• Courtney B. Sherman, MD
• James D. Torosis, MD
• Monika A. Sarkar, MD
• James K. Yan, DO
• Connie W. Wang, MD

All gastroenterologists in San Francisco →

Other clinicians in University of California SFGH Medical Group

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

• Ryan W. Stevenson, CNA
• Lurit M. Bepo
• Paula J. Lum, MD
• Tian Yue Song, MD
• Meir T. Marmor, MD
• Meredith Mirrer, MD

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