William Liao, MD
NPI 1194515304 · Student in an Organized Health Care Education/Training Program · Colton, CA
William Liao, MD is a Student in an Organized Health Care Education/Training Program provider in Colton, CA (NPI 1194515304).
Provider details
- NPI number
- 1194515304
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% 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
- 2025-05-09
- Last updated
- 2025-05-21
- Certified
- 2025-05-21
Frequently asked questions
- What is William Liao's NPI number?
- William Liao's National Provider Identifier (NPI) is 1194515304, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Liao's specialty?
- William Liao is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is William Liao located?
- William Liao's practice location on file with NPPES is 400 N Pepper Ave, Colton, CA 92324-1801.
- What is William Liao's phone number?
- The practice phone number listed in the NPPES registry for William Liao is (909) 580-6343.
- Is William Liao's NPI active?
- Yes — William Liao's NPI (1194515304) is active in the NPPES registry as of the last update on 2025-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.