1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Pediatrics
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. KATHERINE K. MATTHAY M.D.
NPI 1801822499
Pediatrics in San Francisco, CA

Active since June 24, 2006
505 PARNASSUS AVE, SAN FRANCISCO, CA 94143(415) 476-3831(415) 502-4372 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About Dr. Katherine K. Matthay M.d. NPPES

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

DR. KATHERINE K. MATTHAY M.D. (NPI 1801822499) is an individual pediatrics provider in San Francisco, California, licensed in California (G33559) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1801822499
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. KATHERINE K. MATTHAYCredential: M.D.
Location Address505 PARNASSUS AVESan Francisco, CA 94143-2204
Mailing Address1635 Divisadero Street, Suite 625, Box 1821San Francisco, CA 94143-0001 · (415) 476-4029 · Fax (415) 476-4150
Phone(415) 476-3831
Fax(415) 502-4372
Sole ProprietorNo
Enumeration DateJune 24, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1801822499 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · G33559
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License G33559 (CA)
505 PARNASSUS AVE, San Francisco, CA 94143
Open in Google Maps ↗

Other Identifiers 1

Medicaid00G335590CA

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 RAMSDELL NNP
Nurse Practitioner (Neonatal)
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1000
DR. CLAUDIO ANDRES BRAVO CARRILLO M.D.
Internal Medicine (Advanced Heart Failure and Transplant Cardiology)
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 502-4243
MAURICIO JALIFE BUCAY M.D
Hospitalist
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 750-4994
EMMA B SHAK M.D.
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-1528
DR. ADRIANA A.T. MARTIN M.D., PH.D.
Internal Medicine
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 514-7288
WILLIAM JAMES DEARDORFF
Internal Medicine (Geriatric Medicine)
505 PARNASSUS AVE, 15 LONG
SAN FRANCISCO, CA 94143
San Francisco County (415) 406-1417
KEERTHANA REDDY BANALA
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 514-7288
ROBERT CHRISTIAN WENZ
Nurse Anesthetist, Certified Registered
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-8054

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 Matthay's NPI number?

The NPI number for Katherine Matthay is 1801822499. It was assigned to this individual provider in the NPPES registry on June 24, 2006.

Where is Katherine Matthay located?

Katherine Matthay practices at 505 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 476-3831.

What is Katherine Matthay's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

When was this NPI record last updated?

The NPPES record for Katherine Matthay was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 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.