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DR. WEIJEN WILLIAM CHANG M.D.
NPI 1235174103
Pediatrics in Springfield, MA

Active since June 17, 2006PECOS EnrolledAccepts Medicare Assignment
759 CHESTNUT STREET, SPRINGFIELD, MA 01107(413) 794-2398(413) 794-1273 Get Directions Write a Review

NPPES record last updated: March 17, 2018. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 17, 2018, Sep 14, 2017, Aug 31, 2017 (3 updates tracked since 2017).

About Dr. Weijen William Chang M.d. NPPES

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

DR. WEIJEN WILLIAM CHANG M.D. (NPI 1235174103) is an individual pediatrics provider in Springfield, Massachusetts, licensed in Massachusetts (157873) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Diego, and is a graduate of Other (1994).

NPPES Registry Identity

NPI1235174103
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. WEIJEN WILLIAM CHANGCredential: M.D.
Location Address759 CHESTNUT STREETSpringfield, MA 01107-1619
Mailing Address280 Chestnut St, 2nd FloorSpringfield, MA 01107-1619 · 14137943909
Phone(413) 794-2398
Fax(413) 794-1273
Sole ProprietorNo
Medical School CMSOtherGraduated 1994
Enumeration DateJune 17, 2006
Last NPPES UpdateMarch 17, 20183 updates tracked since enumeration
✔ NPI 1235174103 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in MA · 157873
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 MedicineTaxonomy 207R00000X · License 157873 (MA)
Also ListedHospitalistTaxonomy 208M00000X · License 157873 (MA)
759 CHESTNUT STREET, Springfield, MA 01107
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Secondary Practice Location 1

Location 1200 W Arbor DrSan Diego, CA 92103-9000 · Phone (858) 249-6748

Other Identifiers 1

Medicaid3181812MA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Weijen William Chang M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3072562610
PECOS Enrollment IDI20170103001034, I20260413002223
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01107 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

CHRISTOPHER HIBBARD CRNA
Nurse Anesthetist, Certified Registered
759 CHESTNUT STREET
SPRINGFIELD, MA 01107
Hampden County (413) 795-0754
MISS KATHERINE ANN RING CPNP
Nurse Practitioner (Pediatrics)
759 CHESTNUT STREET
SPRINGFIELD, MA 01107
Hampden County (413) 794-9338
DR. SANJAY TIMILSINA MD
Internal Medicine
759 CHESTNUT STREET
SPRINGFIELD, MA 01107
Hampden County (413) 794-6297
ASHLEY KATHRYN ROBERTS PA-C
Physician Assistant (Surgical)
759 CHESTNUT STREET
SPRINGFIELD, MA 01107
Hampden County (413) 794-8020
DEEPIKA SUNDARARAJ MD
Psychiatry & Neurology (Psychiatry)
759 CHESTNUT STREET, WG703
SPRINGFIELD, MA 01107
Hampden County (413) 794-5555
MONICA SHAH
Emergency Medicine
759 CHESTNUT STREET, # S6538
SPRINGFIELD, MA 01107
Hampden County (413) 794-9060
CHELSEA BYRD PA-C
Physician Assistant
759 CHESTNUT STREET, # S6538
SPRINGFIELD, MA 01107
Hampden County (413) 794-3233
JOANNA LUTY MD
Pediatrics (Pediatric Hematology-Oncology)
759 CHESTNUT STREET, SW3500
SPRINGFIELD, MA 01107
Hampden County (413) 794-9338

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 Weijen Chang's NPI number?

The NPI number for Weijen Chang is 1235174103. It was assigned to this individual provider in the NPPES registry on June 17, 2006.

Where is Weijen Chang located?

Weijen Chang practices at 759 Chestnut Street, Springfield, MA 01107. The listed phone number is (413) 794-2398.

What is Weijen Chang's specialty?

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

Is Weijen Chang enrolled in Medicare?

Yes. Weijen Chang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Weijen Chang was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.