Lily Au-Yeung
NPI 1396635785 · Family Medicine Physician · Spring Valley, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lily Au-Yeung is a Family Medicine Physician provider in Spring Valley, CA (NPI 1396635785).
Provider details
- NPI number
- 1396635785
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sole proprietor
- No
- License
- 95027997 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-07-07
- Last updated
- 2025-07-07
- Certified
- 2025-07-07
Frequently asked questions
- What is Lily Au-Yeung's NPI number?
- Lily Au-Yeung's National Provider Identifier (NPI) is 1396635785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lily Au-Yeung's specialty?
- Lily Au-Yeung is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lily Au-Yeung located?
- Lily Au-Yeung's practice location on file with NPPES is 10225 Austin Dr Ste 105, Spring Valley, CA 91978-1521.
- What is Lily Au-Yeung's phone number?
- The practice phone number listed in the NPPES registry for Lily Au-Yeung is (858) 648-0755.
- Does Lily Au-Yeung accept Medicare?
- Lily Au-Yeung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lily Au-Yeung's NPI active?
- Yes — Lily Au-Yeung's NPI (1396635785) is active in the NPPES registry as of the last update on 2025-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.