Ling-Ya Chao, MD
NPI 1245868199 · Neurology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ling-Ya Chao, MD is a Neurology Physician provider in San Francisco, CA (NPI 1245868199).
Provider details
- NPI number
- 1245868199
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 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.
Practice location
Mailing address
Additional practice locations (1)
- 505 Parnassus AveSan Francisco, CA 94143-2204Phone: (415) 353-2273
Registry dates
- Enumerated
- 2020-03-27
- Last updated
- 2025-06-30
- Certified
- 2025-06-30
Frequently asked questions
- What is Ling-Ya Chao's NPI number?
- Ling-Ya Chao's National Provider Identifier (NPI) is 1245868199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ling-Ya Chao's specialty?
- Ling-Ya Chao is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Ling-Ya Chao located?
- Ling-Ya Chao's practice location on file with NPPES is 400 Parnassus Ave Fl 8, San Francisco, CA 94143-2202.
- What is Ling-Ya Chao's phone number?
- The practice phone number listed in the NPPES registry for Ling-Ya Chao is (415) 353-2437.
- Does Ling-Ya Chao accept Medicare?
- Ling-Ya Chao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ling-Ya Chao's NPI active?
- Yes — Ling-Ya Chao's NPI (1245868199) is active in the NPPES registry as of the last update on 2025-06-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.