Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JOHN C PAK PHARMD
NPI 1891795118
Pharmacist - Pharmacotherapy in Fullerton, CA

Active since July 28, 2005
1269 SUMMERSWORTH PL, FULLERTON, CA 92833(714) 879-4778(714) 879-4767 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. John C Pak Pharmd NPPES

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

DR. JOHN C PAK PHARMD (NPI 1891795118) is an individual pharmacotherapy provider in Fullerton, California, licensed in California (RPH 44399) and active in the NPI registry since July 2005.

NPPES Registry Identity

NPI1891795118
Entity TypeIndividualMale
Primary Taxonomy1835P1200X
Provider Legal NameDR. JOHN C PAKCredential: PHARMD
Location Address1269 SUMMERSWORTH PLFullerton, CA 92833-2054
Mailing Address1269 Summersworth PlFullerton, CA 92833-2054 · (714) 879-4778 · Fax (714) 879-4767
Fax(714) 879-4767
Sole ProprietorNo
Enumeration DateJuly 28, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1891795118 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPharmacist · PharmacotherapyPharmacy Service Providers
Taxonomy Code1835P1200X
License Licensed in CA · RPH 44399
Definition

A licensed pharmacist who has demonstrated specialized knowledge and skill in optimizing pharmacotherapeutic care of patients, by developing, implementing, monitoring, and modifying complex treatment plans, providing advanced level education and consultation, and collaborating with other health professionals in the management of therapy.

1269 SUMMERSWORTH PL, Fullerton, CA 92833

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 John Pak's NPI number?

The NPI number for John Pak is 1891795118. It was assigned to this individual provider in the NPPES registry on July 28, 2005.

Where is John Pak located?

John Pak practices at 1269 Summersworth Pl, Fullerton, CA 92833. The listed phone number is (714) 879-4778.

What is John Pak's specialty?

The primary specialty registered for this NPI is Pharmacist, specializing in Pharmacotherapy, with taxonomy code 1835P1200X.

When was this NPI record last updated?

The NPPES record for John Pak was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.