Monika Aplyn, MD

Medicare activity in 2024

Official CMS public-use data for Monika Aplyn, 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. Critical care, first 30-74 minutes (99291)313 services
2. Critical care, each additional 30 minutes (99292)64 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)63 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)59 services
5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)15 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%
• Chronic kidney disease62%
• Diabetes60%
• Heart failure60%
• Ischemic heart disease56%

Hospitals where Monika Aplyn works

Medicare's Facility Affiliation Data lists Monika Aplyn 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
• Contra Costa Regional Medical CenterMartinez, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050276
• John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050496
• John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050180

Practice locations

Addresses where Monika Aplyn is enrolled with Medicare (CMS data updated October 2, 2026).

• 1100 Van Ness Ave, Suite 1005San Francisco, CA 94109 (415) 923‑3421
• 1101 Van Ness AveSan Francisco, CA 94109 (415) 600‑6000
• 1601 Ygnacio Vly RdWalnut Creek, CA 94596 (925) 939‑3000
• 2299 Bacon St, Suite 2Concord, CA 94520 (925) 676‑2942
• 3838 California StSan Francisco, CA 94118

Group practices

Medicare enrollment lists Monika Aplyn as a member of these groups (CMS data updated October 2, 2026).

• Sutter Bay Medical Foundation3,829 clinicians in the group
• John Muir Trauma Physicians Billing Service113 clinicians in the group
• San Francisco Critical Care Med Group Inc18 clinicians in the group
• Diablo Pulmonary Medical Group Inc8 clinicians in the group

Specialties

• Critical Care (Intensivists)primary
• Internal Medicinealso

Find other Critical Care (Intensivists) doctors in California →

Other critical care doctors in San Francisco

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

• Carolyn S. Calfee, MD
• Kuoko S. Yamada, MD
• Sheryl R. Goldyn, MD
• Jeffrey E. Gotts, MD
• Christopher A. Berger, MD
• George S. Horng, MD
• Constantina L. Master, MD
• Sandrijn M. Van Schaik, MD

All critical care doctors in San Francisco →

Other clinicians in Sutter Bay Medical Foundation

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

• Irene M. Ritterman, NP
• Cindy L. Russell, MD
• Mary Isabelle C. Huynh, PA
• Veronica I. Lagos-Jaramillo
• Zachary Reynado-Sabado, NP
• Jaclyn R. Gadbaw, 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