Theresa Yim, MHS, PA-C
NPI 1427423052 · Physician Assistant · San Francisco, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Yim, MHS, PA-C is a Physician Assistant provider in San Francisco, CA (NPI 1427423052).
Provider details
- NPI number
- 1427423052
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MHS, PA-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 53084 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
101 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 35 | $6 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 16 | $13 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 14 | $16 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 14 | $6 |
| Vitamin D-3 Level82306 | 11 | $29 |
| Hemoglobin A1c Level83036 | 11 | $10 |
Typical Medicare-allowed amounts for these services range $6–$29 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 39 | 19 |
| Amlodipine Besylate | 25 | 11 |
| Losartan Potassium | 18 | 11 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 14 | 14 |
| Triamcinolone Acetonide | 13 | — |
| Omeprazole | 12 | — |
| Tamsulosin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-12-08
- Last updated
- 2016-06-24
Frequently asked questions
- What is Theresa Yim's NPI number?
- Theresa Yim's National Provider Identifier (NPI) is 1427423052, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Yim's specialty?
- Theresa Yim is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Theresa Yim located?
- Theresa Yim's practice location on file with NPPES is 2574 San Bruno Ave, San Francisco, CA 94134-1505.
- What is Theresa Yim's phone number?
- The practice phone number listed in the NPPES registry for Theresa Yim is (415) 391-9686.
- Does Theresa Yim accept Medicare?
- Theresa Yim is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Yim's NPI active?
- Yes — Theresa Yim's NPI (1427423052) is active in the NPPES registry as of the last update on 2016-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.