DR. JUDY YANG D.O.
NPI 1396966396
Pediatrics in Fairfield, CA

Q: What is Judy Yang's NPI number?

The NPI number for Judy Yang is 1396966396. It was assigned to this individual provider in the NPPES registry on May 1, 2007.

Q: What is Judy Yang'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 Judy Yang was last updated on August 3, 2015. 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.

Active since May 01, 2007PECOS Enrolled

2458 HILBORN RD, FAIRFIELD, CA 94534(707) 646-5000(707) 646-5501 Get Directions Write a Review

NPPES record last updated: August 3, 2015. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Dr. Judy Yang D.o. NPPES

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

DR. JUDY YANG D.O. (NPI 1396966396) is an individual pediatrics provider in Fairfield, California, licensed in California (20A10096) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396966396

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. JUDY YANGCredential: D.O.

Location Address2458 HILBORN RDFairfield, CA 94534-1072

Mailing Address2458 Hilborn RdFairfield, CA 94534-1072 · (707) 646-5000 · Fax (707) 646-5501

Phone(707) 646-5000

Fax(707) 646-5501

Sole ProprietorYes

Enumeration DateMay 1, 2007

Last NPPES UpdateAugust 3, 2015

✔ NPI 1396966396 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in CA · 20A10096

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.

2458 HILBORN RD, Fairfield, CA 94534

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Judy Yang D.o. 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 Judy Yang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northbay Healthcare Group

0.9 mi

Addiction Medicine

1860 PENNSYLVANIA AVE STE 230
Fairfield, CA 94533

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Northbay Physicians Surgery Center, LLC
516 clinicians in this Medicare group

NPI 1780736736 (707) 646-4370

Northbay Health Medical Foundation

5.5 mi

Internal Medicine

4500 BUSINESS CENTER DR
Fairfield, CA 94534

Reassigned Medicare billing, California enrollment
225 clinicians in this Medicare group

NPI 1760283527 (707) 646-3110

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 94534 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

$98.85 typical visit price

range $65.02 – $191.95

Typical copayment $24.71 (range $16.25 – $47.98)

Most-billed visit code 99203

Established Patient

$113.05 typical visit price

range $21.86 – $157.69

Typical copayment $28.26 (range $5.46 – $39.42)

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 14

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

NGUYEN NGUYEN

Family Medicine