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MRS. GILLIAN MARIE WILLIAMS PNP
NPI 1730589169
Nurse Practitioner - Pediatrics in Upland, CA

Active since September 04, 2014
440 N MOUNTAIN AVE, SUITE 112, UPLAND, CA 91786(909) 931-1313(909) 920-3883 Get Directions Write a Review

NPPES record last updated: September 4, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mrs. Gillian Marie Williams Pnp NPPES

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

MRS. GILLIAN MARIE WILLIAMS PNP (NPI 1730589169) is an individual pediatrics provider in Upland, California, licensed in California (22163) and active in the NPI registry since September 2014.

NPPES Registry Identity

NPI1730589169
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameMRS. GILLIAN MARIE WILLIAMSCredential: PNP
Location Address440 N MOUNTAIN AVE, SUITE 112Upland, CA 91786-5183
Mailing Address440 N Mountain Ave, Suite 112Upland, CA 91786-5183 · (909) 931-1313 · Fax (909) 920-3883
Phone(909) 931-1313
Fax(909) 920-3883
Sole ProprietorNo
Enumeration DateSeptember 4, 2014
✔ NPI 1730589169 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in CA · 22163
Also ListedRegistered NurseTaxonomy 163W00000X · License 664000 (CA)
440 N MOUNTAIN AVE, Upland, CA 91786
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Other Providers at the Same Location NPPES 9

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

DR. MARK JEFFREY KUNIHIRA D.D.S.
Dentist (Periodontics)
440 N MOUNTAIN AVE, SUITE 309
UPLAND, CA 91786
San Bernardino County (909) 949-2881
DR. KATHERINE ZAHAROPOULOS DDS
Dentist (General Practice)
440 N MOUNTAIN AVE, SUITE #101
UPLAND, CA 91786
San Bernardino County (909) 982-8891
DR. NEGAR TABANDEH DDS, MS
Dentist (Periodontics)
440 N MOUNTAIN AVE
UPLAND, CA 91786
San Bernardino County (909) 949-2881
DR. SAMISH AMIT PATEL M.D.
Internal Medicine
440 N MOUNTAIN AVE, SUITE 301
UPLAND, CA 91786
San Bernardino County (909) 931-4034
DR. DANIEL MASATO KUNIHIRA DDS
Dentist (Periodontics)
440 N MOUNTAIN AVE, STE 309
UPLAND, CA 91786
San Bernardino County (909) 949-2881
STEWART WANG MD INC
Plastic Surgery
440 N MOUNTAIN AVE, SUITE 307
UPLAND, CA 91786
San Bernardino County (909) 985-6513
DR. ROBIN MARGUERITE SU D.D.S.
Dentist
440 N MOUNTAIN AVE, STE 116
UPLAND, CA 91786
San Bernardino County (909) 985-3430
DR. BRADLEY CHING DDS
Dentist (General Practice)
440 N MOUNTAIN AVE, #116
UPLAND, CA 91786
San Bernardino County (909) 985-3430

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 Gillian Williams's NPI number?

The NPI number for Gillian Williams is 1730589169. It was assigned to this individual provider in the NPPES registry on September 4, 2014.

Where is Gillian Williams located?

Gillian Williams practices at 440 N Mountain Ave Suite 112, Upland, CA 91786. The listed phone number is (909) 931-1313.

What is Gillian Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

When was this NPI record last updated?

The NPPES record for Gillian Williams was last updated on September 4, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.