JOY HUILING CHANG DDS
NPI 1922489699
Dentist - Orthodontics and Dentofacial Orthopedics in Palo Alto, CA

Active since June 17, 2015PECOS Enrolled
725 WELCH RD, PALO ALTO, CA 94304(650) 497-8000 Get Directions Write a Review

NPPES record last updated: January 21, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 21, 2026, Mar 2, 2021, May 10, 2018 (3 updates tracked since 2018).

About Joy Huiling Chang Dds NPPES

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

JOY HUILING CHANG DDS (NPI 1922489699) is an individual orthodontics and dentofacial orthopedics provider in Palo Alto, California, licensed in California (102338) and active in the NPI registry since June 2015. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Jose, and is a graduate of Other (2015).

NPPES Registry Identity

NPI1922489699
Entity TypeIndividualFemale
Primary Taxonomy1223X0400X
Provider Legal NameJOY HUILING CHANGCredential: DDS
Location Address725 WELCH RDPalo Alto, CA 94304-1601
Mailing Address725 Welch RdPalo Alto, CA 94304-1601 · (650) 497-8000
Sole ProprietorNo
Medical School CMSOtherGraduated 2015
Enumeration DateJune 17, 2015
Last NPPES UpdateJanuary 21, 20263 updates tracked since enumeration
NPPES CertifiedJanuary 21, 2026
✔ NPI 1922489699 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Orthodontics and Dentofacial OrthopedicsDental Providers
Taxonomy Code1223X0400X
License✔ Licensed in CA · 102338
Definition
That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures.
725 WELCH RD, Palo Alto, CA 94304

Secondary Practice Location 1

Location 12075 Forest Ave Ste 2San Jose, CA 95128-4812 · Phone (408) 298-3433

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Joy Huiling Chang Dds is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5698073575
PECOS Enrollment IDI20251231002249
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

2

Medicare enrollment records show Joy Chang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Children
725 WELCH RD
Palo Alto, CA 94304
  • Reassigned Medicare billing, California enrollment
  • 3,617 clinicians in this Medicare group
General Acute Care Hospital
300 PASTEUR DRIVE
Stanford, CA 94305
  • Reassigned Medicare billing, California enrollment
  • 4,258 clinicians in this Medicare group

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 94304 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
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
Most-billed visit code 99213
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.

Occupational Therapist (Pediatrics)
725 WELCH RD
PALO ALTO, CA 94304
Nurse Practitioner (Neonatal)
725 WELCH RD
PALO ALTO, CA 94304
Pediatrics
725 WELCH RD
PALO ALTO, CA 94304
Anesthesiology (Pediatric Anesthesiology)
725 WELCH RD
PALO ALTO, CA 94304
Pediatrics (Pediatric Hematology-Oncology)
725 WELCH RD
PALO ALTO, CA 94304
Occupational Therapist
725 WELCH RD
PALO ALTO, CA 94304
Nurse Practitioner
725 WELCH RD
PALO ALTO, CA 94304
Hospitalist
725 WELCH RD
PALO ALTO, CA 94304

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 Joy Chang's NPI number?

The NPI number for Joy Chang is 1922489699. It was assigned to this individual provider in the NPPES registry on June 17, 2015.

Where is Joy Chang located?

Joy Chang practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8000.

What is Joy Chang's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Orthodontics and Dentofacial Orthopedics, with taxonomy code 1223X0400X.

Is Joy Chang enrolled in Medicare?

Yes. Joy Chang is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Joy Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joy Chang reassigns Medicare benefits to 2 organizations: Lpch Medical Group Div Of Lucile (Palo Alto, CA) and Stanford Health Care (Stanford, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joy Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Joy Chang was last updated on January 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.