WILLIS L CHANG
NPI 1831496538
Internal Medicine in Fresno, CA

Q: What is Willis Chang's NPI number?

The NPI number for Willis Chang is 1831496538. It was assigned to this individual provider in the NPPES registry on February 16, 2011.

Q: What is Willis Chang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Willis Chang was last updated on September 18, 2014. 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 February 16, 2011PECOS EnrolledAccepts Medicare Assignment

1221 E SPRUCE AVE, FRESNO, CA 93720(559) 450-5777(559) 449-2654 Get Directions Write a Review

NPPES record last updated: September 18, 2014. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Willis L Chang NPPES

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

WILLIS L CHANG (NPI 1831496538) is an individual internal medicine provider in Fresno, California, licensed in California (A130760) and active in the NPI registry since February 2011. He is enrolled in Medicare PECOS and is a graduate of Other (2001).

NPPES Registry Identity

NPI1831496538

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameWILLIS L CHANG

Location Address1221 E SPRUCE AVEFresno, CA 93720-3374

Mailing Address1303 E Herndon Ave Ste 431Fresno, CA 93720-3309 · (559) 450-3889 · Fax (559) 450-7473

Phone(559) 450-5777

Fax(559) 449-2654

Sole ProprietorNo

Medical School CMSOtherGraduated 2001

Enumeration DateFebruary 16, 2011

Last NPPES UpdateSeptember 18, 2014

✔ NPI 1831496538 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A130760

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1221 E SPRUCE AVE, Fresno, CA 93720

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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

Willis L Chang 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 ID8820210990

PECOS Enrollment IDI20141106000067

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 93720 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

$133.94 typical visit price

range $58.87 – $176.60

Typical copayment $33.48 (range $14.71 – $44.15)

Most-billed visit code 99204

Established Patient

$103.36 typical visit price

range $19.28 – $144.60

Typical copayment $25.84 (range $4.82 – $36.15)

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.

MARKOS H ZEMEDE MD

Internal Medicine