YIH CHANG M.D. - NPI 1174506380 - Internal Medicine in Fremont, CA

Q: What is Yih Chang's NPI number?

The NPI number for Yih Chang is 1174506380. It was assigned to this individual provider in the NPPES registry on November 22, 2005.

Q: What is Yih 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 Yih Chang was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

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About Yih Chang M.d. NPPES

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

YIH CHANG M.D. (NPI 1174506380) is an individual internal medicine provider in Fremont, California, licensed in California (G69040) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1174506380

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameYIH CHANGCredential: M.D.

Location Address2147 MOWRY AVE, STE D3Fremont, CA 94538-1724

Mailing Address2147 Mowry Ave, Ste D3Fremont, CA 94538-1724 · (510) 648-2087

Phone(510) 648-2087

Sole ProprietorNo

Enumeration DateNovember 22, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1174506380 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 · G69040

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 ListedInternal Medicine · Endocrinology, Diabetes & MetabolismTaxonomy 207RE0101X · License G69040 (CA)

2147 MOWRY AVE, Fremont, CA 94538

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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 (PECOS)

Yih Chang M.d. 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94538 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

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.