Susan Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Susan Nguyen, 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. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)1,921 services
2. Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)1,427 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)380 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)304 services
5. Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)206 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%
• Arthritis60%
• Depression46%
• Anxiety46%
• Ischemic heart disease43%

Hospitals where Susan Nguyen works

Medicare's Facility Affiliation Data lists Susan Nguyen 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.

• Marinhealth Medical CenterGreenbrae, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050360

Practice locations

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

• 250 Bon Air RdGreenbrae, CA 94904 (415) 925‑7000

Group practices

Medicare enrollment lists Susan Nguyen as a member of this group (CMS data updated October 2, 2026).

• Galen Inpatient Physicians PC1,077 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Greenbrae

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

• Sarah Rikleen, MD
• Mary Rose L. Fabi, MD
• Khristine M. Papa, MD
• Katherine E. Schmidt, MD
• Navneet Attri, MD
• Elizaveta Shostakovich, MD
• Hina Guezmir, MD
• Rafay S. Abbasi, MD

All internal medicine doctors in Greenbrae →

Other clinicians in Galen Inpatient Physicians PC

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

• Alexandra E. Shawo, MD
• Samantha P. McCaskill, DO
• Mahrukh Riaz, MD
• Suheung Lee, MD
• Parishad Yakhchalian
• Thomas P. Varied, 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