F Otis Stephen, MD

Medicare activity in 2024

Official CMS public-use data for F Otis Stephen, 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. Imaging of digestive tract done from the inside of the digestive tract (91110)11 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)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 cholesterol75%
• High blood pressure73%
• Arthritis71%
• Ischemic heart disease42%
• Diabetes38%
• Anxiety36%

Hospitals where F Otis Stephen works

Medicare's Facility Affiliation Data lists F Otis Stephen 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.

• Ronald Reagan UCLA Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050262
• Santa Monica - UCLA Medical Center & Orthopaedic HospitalSanta Monica, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050112

Practice locations

Addresses where F Otis Stephen is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 14; the Medicare profile lists all.

• 100 Medical PlazaLos Angeles, CA 90095
• 100 Medical Plz, Suite 310Los Angeles, CA 90095 (310) 825‑7922
• 1223 16th StSanta Monica, CA 90404 (424) 259‑8859
• 1223 16th St, Suite 2101Santa Monica, CA 90404 (424) 259‑8859
• 200 Medical PlazaLos Angeles, CA 90095

Group practices

Medicare enrollment lists F Otis Stephen as a member of this group (CMS data updated October 2, 2026).

• The Regents of the University of California1,462 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in California →

Other gastroenterologists in Los Angeles

Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.

• Kimberly A. Silva, MD
• Mordecai Solomon, DO
• Payman Khorrami, MD
• Arash Zarimani, MD
• Katherine J. Hahn, MD
• Florence Damilola Odufalu, MD
• Anthony Myint, MD
• Brian Kim, MD

All gastroenterologists in Los Angeles →

Other clinicians in The Regents of the University of California

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

• James D. Senechal, MD
• Louise F. Curland, NP
• Ian Downs, MD
• Michelle G. Sanchez, NP
• Lara T. Kose, MD
• Gregory A. Goshgarian, 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