Theresa Tseng, MD

Medicare activity in 2024

Official CMS public-use data for Theresa Tseng, 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 low level od decision making, if using time, 20 minutes or more (99213)173 services
2. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)50 services
3. Annual depression screening, 5 to 15 minutes (G0444)40 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%
• Diabetes54%
• Chronic kidney disease46%
• Osteoporosis38%
• COPD33%

Practice locations

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

• 1153 S Garfield AveAlhambra, CA 91801 (626) 281‑1961

Group practices

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

• Better Care Medical Group, Inc.2 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Alhambra

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

• Paul T. Liu, MD
• Robert W. Chan, MD
• Kimberly Chan, MD
• Eric Cui, DO
• Nam H. Tran, DO
• Justin Sagami, DO
• Byron H. Lin, MD
• Jacqueline Wong, MD

All internal medicine doctors in Alhambra →

Other clinicians in Better Care Medical Group, Inc.

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

• Byron H. Lin, 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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
4. Medicare Care Compare — official Medicare tool to look up clinicians