Marut K. Thongcharoen, MD

Medicare activity in 2024

Official CMS public-use data for Marut K. Thongcharoen, 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. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)159 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)41 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)35 services
4. Critical care, first 30-74 minutes (99291)23 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 cholesterol73%
• Arthritis54%
• Chronic kidney disease51%
• Diabetes42%
• Depression40%

Hospitals where Marut K. Thongcharoen works

Medicare's Facility Affiliation Data lists Marut K. Thongcharoen 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 - Mission BernalSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050055
• 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
• California Pacific Medical Center-Davies Campus HospitalSan Francisco, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050008

Practice locations

Addresses where Marut K. Thongcharoen is enrolled with Medicare (CMS data updated October 2, 2026).

• 3555 Cesar ChavezSan Francisco, CA 94110 (415) 485‑8824

Group practices

Medicare enrollment lists Marut K. Thongcharoen as a member of this group (CMS data updated October 2, 2026).

• Pacific Inpatient Medical Group132 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Francisco

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

• Lisa S. Rotenstein, MD
• Archna Eniasivam, MD
• Edward L. Machtinger, MD
• Douglas G. Cleary, MD
• Allison Wong, MD
• Michelle A. Malcolmson, MD
• Christopher Y. Lau, MD
• Thoby J. Lawrence, MD

All internal medicine doctors in San Francisco →

Other clinicians in Pacific Inpatient Medical Group

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

• Hirofumi Hashimoto, MD
• Lilian S. Lao, MD
• Rachael M. Vandebogart, MD
• Yu-Chen Hu, MD
• Dipti Agrawal, MD
• Bianka J. Aguilar, 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