Raphael B. Merriman, MD

Medicare activity in 2024

Official CMS public-use data for Raphael B. Merriman, 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. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)439 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)299 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)111 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)60 services
5. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)47 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 pressure74%
• High cholesterol65%
• Diabetes45%
• Chronic kidney disease44%
• Arthritis42%
• Ischemic heart disease26%

Hospitals where Raphael B. Merriman works

Medicare's Facility Affiliation Data lists Raphael B. Merriman 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.

• California Pacific Medical Center- Van Ness CampusSan Francisco, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050047
• Sutter Auburn Faith HospitalAuburn, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050498
• Sutter Davis HospitalDavis, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050537
• Sutter Medical Center, SacramentoSacramento, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050108
• Sutter Roseville Medical CenterRoseville, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050309

Practice locations

Addresses where Raphael B. Merriman is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

• 1100 Van Ness AveSan Francisco, CA 94109 (415) 600‑0140
• 1101 Van Ness AveSan Francisco, CA 94109 (415) 600‑6000
• 1315 Alhambra Blvd, Suite 210Sacramento, CA 95816 (916) 732‑4380
• 151 N Sunrise Ave, Suite 1205Roseville, CA 95661 (415) 600‑1010
• 3200 Kearney StFremont, CA 94538 (510) 490‑1222

Group practices

Medicare enrollment lists Raphael B. Merriman as a member of this group (CMS data updated October 2, 2026).

• Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

• Gastroenterologyprimary

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.

• Fernando S. Velayos, MD
• Annette Y. Kwon, MD
• Ma Somsouk, MD
• Elijah Verheyen, MD
• Cynthia W. Leung, MD
• Cathleen N. Cabansag, MD
• Pooja Dharwadkar, MD
• Richard T. Frederick, MD

All gastroenterologists in San Francisco →

Other clinicians in Sutter Bay Medical Foundation

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

• Ruzana Zhiletezheva, NP
• Rodney L. Camp, DO
• Grace W. Chan, MD
• Connie J. Lee, MD
• Harmanjot K. Gill, MD
• Paul E. Krause, 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