KATHERINE Y WU MD
NPI 1518378256
Pediatrics in Walnut Creek, CA

Q: What is Katherine Wu's NPI number?

The NPI number for Katherine Wu is 1518378256. It was assigned to this individual provider in the NPPES registry on May 15, 2014.

Q: What is Katherine Wu's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Katherine Wu was last updated on October 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since May 15, 2014PECOS Enrolled

1601 YGNACIO VALLEY RD, WALNUT CREEK, CA 94598(925) 947-5350 Get Directions Write a Review

NPPES record last updated: October 31, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 14, 2020, Sep 3, 2020 (2 updates tracked since 2020).

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About Katherine Y Wu Md NPPES

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

KATHERINE Y WU MD (NPI 1518378256) is an individual pediatrics provider in Walnut Creek, California, licensed in California (A148302) and active in the NPI registry since May 2014. She is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1518378256

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameKATHERINE Y WUCredential: MD

Location Address1601 YGNACIO VALLEY RDWalnut Creek, CA 94598-3122

Mailing Address1601 Ygnacio Valley RdWalnut Creek, CA 94598-3122 · (925) 947-5350

Phone(925) 947-5350

Sole ProprietorNo

Enumeration DateMay 15, 2014

Last NPPES UpdateOctober 31, 20252 updates tracked since enumeration

NPPES CertifiedOctober 31, 2025

✔ NPI 1518378256 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

Licenses✔ Licensed in CA · A148302✔ Licensed in PA · MT206193

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 ListedPediatrics · Neonatal-Perinatal MedicineTaxonomy 2080N0001X · License A148302 (CA)

1601 YGNACIO VALLEY RD, Walnut Creek, CA 94598

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Secondary Practice Locations 3

Location 13401 Civic Center Blvd, 9NW, Room 55Philadelphia, PA 19104-4319 · Phone (215) 590-1220

Location 2747 52nd StOakland, CA 94609-1809 · Phone (510) 428-3276

Location 3725 Welch RdPalo Alto, CA 94304-1601 · Phone (650) 497-8000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katherine Y Wu Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Katherine Wu reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco

25 mi

Surgery

400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
5,645 clinicians in this Medicare group

NPI 1346329380 (415) 353-2161

Ucsf Medical Group Business Services

25 mi

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94122

Reassigned Medicare billing, California enrollment
5,544 clinicians in this Medicare group

NPI 1477624104 (415) 353-2808

Ucsf Pediatrics Associates

25 mi

Pediatrics

505 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
1,159 clinicians in this Medicare group

NPI 1376614016 (415) 353-2000

Lpch Medical Group Div Of Lucile

34 mi

Children

725 WELCH RD
Palo Alto, CA 94304

Reassigned Medicare billing, California enrollment
3,617 clinicians in this Medicare group

NPI 1417907940 (650) 498-6762

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MALCOLM C JOHNSON MD

Emergency Medicine