Quick answers
- Does Theresa A. Yim accept Medicare assignment?
- Yes. Medicare's clinician data says Theresa A. Yim accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Theresa A. Yim see?
- In 2024, CMS data shows 30 Original Medicare patients and 178 services for Theresa A. Yim. This counts Original Medicare only and measures volume, not quality.
- What is Theresa A. Yim's NPI number?
- 1427423052. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Theresa A. Yim, 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.
| Original Medicare patients | 30 |
|---|---|
| Services billed to Medicare | 178 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)35 services
- Blood test, lipids (cholesterol and triglycerides) (80061)16 services
- Blood test, thyroid stimulating hormone (tsh) (84443)14 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test (85027)14 services
- Vitamin d-3 level (82306)11 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%
Practice locations
Addresses where Theresa A. Yim is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 1400 Noriega StSan Francisco, CA 94122 (415) 391‑9686
- 1422 Noriega StSan Francisco, CA 94122 (415) 391‑9686
- 1443 Ocean AveSan Francisco, CA 94112 (415) 391‑9686
- 1450 Noriega StSan Francisco, CA 94122 (415) 391‑9686
- 1520 Stockton StSan Francisco, CA 94133 (415) 391‑9686
Group practices
Medicare enrollment lists Theresa A. Yim as a member of this group (CMS data updated October 2, 2026).
- North East Medical Services143 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Other clinicians in North East Medical Services
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427423052 |
| Corrections | Report an error or suggest an update → |
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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians