Maria Yao, MD
NPI 1255918959 · Pediatrics Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Yao, MD is a Pediatrics Physician provider in Lancaster, CA (NPI 1255918959).
Provider details
- NPI number
- 1255918959
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 255918959 (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
5 yrs in NPPES 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
- 2021-03-27
- Last updated
- 2024-08-20
- Certified
- 2024-08-20
Frequently asked questions
- What is Maria Yao's NPI number?
- Maria Yao's National Provider Identifier (NPI) is 1255918959, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Yao's specialty?
- Maria Yao is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Yao located?
- Maria Yao's practice location on file with NPPES is 335 E Avenue I, Lancaster, CA 93535-1916.
- What is Maria Yao's phone number?
- The practice phone number listed in the NPPES registry for Maria Yao is (661) 471-4219.
- Does Maria Yao accept Medicare?
- Maria Yao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Yao's NPI active?
- Yes — Maria Yao's NPI (1255918959) is active in the NPPES registry as of the last update on 2024-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.