Nang Lok Tsang, MD

Medicare activity in 2024

Official CMS public-use data for Nang Lok Tsang, 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 hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)394 services
2. Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)386 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)258 services
4. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)83 services
5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)81 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%
• Diabetes56%
• Ischemic heart disease53%
• Chronic kidney disease47%
• Arthritis39%

Hospitals where Nang Lok Tsang works

Medicare's Facility Affiliation Data lists Nang Lok Tsang 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.

• AHMC Seton Medical CenterDaly City, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050289
• Peninsula Medical CenterBurlingame, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050007

Practice locations

Addresses where Nang Lok Tsang is enrolled with Medicare (CMS data updated October 2, 2026).

• 1800 Sullivan Ave, Suite 304Daly City, CA 94015 (650) 992‑8484
• 1900 Sullivan AveDaly City, CA 94015 (650) 992‑4000

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Daly City

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

• George E. Ishak, MD
• Herminigildo V. Valle, MD
• Jie Ni, MD
• Daniel H. Hwang, MD
• Helen H. Sun, MD
• Fei Yang Liang, MD
• William S. Chung, MD
• Tony Wong, MD

All internal medicine doctors in Daly City →

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