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WILLIAM LIAO MD
NPI 1194515304
Student in an Organized Health Care Education/Training Program in Colton, CA

Active since May 09, 2025
400 N PEPPER AVE, COLTON, CA 92324(909) 580-6343 Get Directions Write a Review

NPPES record last updated: May 21, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 21, 2025, May 9, 2025 (2 updates tracked since 2025).

About William Liao Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM LIAO MD (NPI 1194515304) is an individual student in an organized health care education/training program in Colton, California and active in the NPI registry since May 2025.

NPPES Registry Identity

NPI1194515304
Entity TypeIndividualMale
Primary Taxonomy390200000X
Provider Legal NameWILLIAM LIAOCredential: MD
Location Address400 N PEPPER AVEColton, CA 92324-1801
Mailing Address400 N Pepper AveColton, CA 92324-1801
Phone(909) 580-6343
Sole ProprietorNo
Enumeration DateMay 9, 2025
Last NPPES UpdateMay 21, 20252 updates tracked since enumeration
NPPES CertifiedMay 21, 2025
✔ NPI 1194515304 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
400 N PEPPER AVE, Colton, CA 92324
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CATHERINE J CALHOUN
Licensed Psychiatric Technician
400 N PEPPER AVE
COLTON, CA 92324
San Bernardino County (909) 580-1800
CINDY COZART
Registered Nurse (Psychiatric/Mental Health)
400 N PEPPER AVE
COLTON, CA 92324
San Bernardino County (909) 580-1800
ARROWHEAD REGIONAL MEDICAL CENTER
General Acute Care Hospital
400 N PEPPER AVE
COLTON, CA 92324
San Bernardino County (909) 580-1000
LINDA MATTHEWS
Registered Nurse
400 N PEPPER AVE
COLTON, CA 92324
San Bernardino County (909) 580-3144
BRANDI DEUEL
Registered Nurse
400 N PEPPER AVE
COLTON, CA 92324
San Bernardino County (909) 580-3144
CHIQUE LOU FLORES RN
Registered Nurse
400 N PEPPER AVE
COLTON, CA 92324
San Bernardino County (909) 580-1800
KEVIN THIEN ONG
Student in an Organized Health Care Education/Training Program
400 N PEPPER AVE
COLTON, CA 92324
San Bernardino County (510) 525-6927
CAROLYN M DOHERTY MD
Otolaryngology
400 N PEPPER AVE, MOB SUITE 308
COLTON, CA 92324
San Bernardino County (909) 580-3353

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Liao's NPI number?

The NPI number for William Liao is 1194515304. It was assigned to this individual provider in the NPPES registry on May 9, 2025.

Where is William Liao located?

William Liao practices at 400 N Pepper Ave, Colton, CA 92324. The listed phone number is (909) 580-6343.

What is William Liao's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

When was this NPI record last updated?

The NPPES record for William Liao was last updated on May 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.