Lois Yang
NPI 1043786791 · Surgical Physician Assistant · Santa Maria, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lois Yang is a Surgical Physician Assistant provider in Santa Maria, CA (NPI 1043786791).
Provider details
- NPI number
- 1043786791
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 57254 (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 tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tramadol Hcl | 38 | 36 |
| Ibuprofen | 19 | 16 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 16 |
| Oxycodone Hcl | 17 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 300 S Stratford AveSanta Maria, CA 93454-5903Phone: (805) 739-3863Fax: (805) 614-2035
- 20250 San Gabriel Valley DrWalnut, CA 91789-1008Phone: (909) 720-9713
Registry dates
- Enumerated
- 2018-10-21
- Last updated
- 2023-09-26
- Certified
- 2022-12-28
Frequently asked questions
- What is Lois Yang's NPI number?
- Lois Yang's National Provider Identifier (NPI) is 1043786791, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lois Yang's specialty?
- Lois Yang is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lois Yang located?
- Lois Yang's practice location on file with NPPES is 316 S Stratford Ave, Santa Maria, CA 93454-5908.
- What is Lois Yang's phone number?
- The practice phone number listed in the NPPES registry for Lois Yang is (805) 348-3700.
- Does Lois Yang accept Medicare?
- Lois Yang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lois Yang's NPI active?
- Yes — Lois Yang's NPI (1043786791) is active in the NPPES registry as of the last update on 2023-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.