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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. KATHERINE BARNES DUNCAN PHARMD
NPI 1083918973
Pharmacist in Santa Rosa, CA

Active since January 06, 2011
144 STONY POINT RD, SANTA ROSA, CA 95401(707) 521-4590(707) 521-4599 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Katherine Barnes Duncan Pharmd NPPES

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

DR. KATHERINE BARNES DUNCAN PHARMD (NPI 1083918973) is an individual pharmacist in Santa Rosa, California, licensed in California (54262) and active in the NPI registry since January 2011.

NPPES Registry Identity

NPI1083918973
Entity TypeIndividualFemale
Primary Taxonomy183500000X
Provider Legal NameDR. KATHERINE BARNES DUNCANCredential: PHARMD
Location Address144 STONY POINT RDSanta Rosa, CA 95401-4122
Mailing Address144 Stony Point RdSanta Rosa, CA 95401-4122 · (707) 521-4590 · Fax (707) 521-4599
Phone(707) 521-4590
Fax(707) 521-4599
Sole ProprietorNo
Enumeration DateJanuary 6, 2011
Last NPPES UpdateJuly 16, 2026
NPPES CertifiedJuly 16, 2026
✔ NPI 1083918973 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyPharmacistPharmacy Service Providers
Taxonomy Code183500000X
License✔ Licensed in CA · 54262
Definition
An individual licensed by the appropriate state regulatory agency to engage in the practice of pharmacy. The practice of pharmacy includes, but is not limited to, assessment, interpretation, evaluation, and implementation, initiation, monitoring or modification of medication and or medical orders; the compounding or dispensing of medication and or medical orders; participation in drug and device procurement, storage, and selection; drug administration; drug regimen reviews; drug or drug-related research; provision of patient education and the provision of those acts or services necessary to provide medication therapy management services in all areas of patient care.
Also ListedPharmacist · Pharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistTaxonomy 1835P0018X · License 54262 (CA)
Also ListedPharmacist · PharmacotherapyTaxonomy 1835P1200X · License 54262 (CA)
Also ListedPharmacist · Ambulatory CareTaxonomy 1835P2201X · License 54262 (CA)
144 STONY POINT RD, Santa Rosa, CA 95401
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Other Names 1

Former Name (1)Katherine Barnes Pharmd

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.

ELLEN BETTY KRUUSMAGI MD
Family Medicine
144 STONY POINT RD
SANTA ROSA, CA 95401
Sonoma County (707) 521-4500
SONOMA COUNTY INDIAN HEALTH PROJECT INC.
Clinic/Center (Mental Health (Including Community Mental Health Center))
144 STONY POINT RD
SANTA ROSA, CA 95401
Sonoma County (707) 521-4545
DAVID WILLIAM MCGAHEE LCSW
Social Worker (Clinical)
144 STONY POINT RD
SANTA ROSA, CA 95401
Sonoma County (707) 521-4545
DR. MICHAEL BERNARD WILDER D.C.
Chiropractor
144 STONY POINT RD
SANTA ROSA, CA 95401
Sonoma County (707) 521-4685
NOELLE DALY PA
Physician Assistant
144 STONY POINT RD
SANTA ROSA, CA 95401
Sonoma County (707) 521-4545
DR. TIMOTHY SAMUEL TONG PHARM D.
Pharmacist
144 STONY POINT RD
SANTA ROSA, CA 95401
Sonoma County (707) 521-4545
MARK VOORHEES DARLINGTON
Pharmacist
144 STONY POINT RD
SANTA ROSA, CA 95401
Sonoma County (707) 525-4585
SONOMA COUNTY INDIAN HEALTH PROJECT
Clinic/Center (Health Service)
144 STONY POINT RD
SANTA ROSA, CA 95401
Sonoma County (707) 521-4545

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 Katherine Duncan's NPI number?

The NPI number for Katherine Duncan is 1083918973. It was assigned to this individual provider in the NPPES registry on January 6, 2011. The provider is also known as Katherine Barnes Pharmd.

Where is Katherine Duncan located?

Katherine Duncan practices at 144 Stony Point Rd, Santa Rosa, CA 95401. The listed phone number is (707) 521-4590.

What is Katherine Duncan's specialty?

The primary specialty registered for this NPI is Pharmacist with taxonomy code 183500000X.

When was this NPI record last updated?

The NPPES record for Katherine Duncan was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 days 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.