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JYH C CHANG MD PROFESSIONAL CORPORATION
NPI 1316168636
Internal Medicine in Baldwin Park, CA

Active since May 02, 2007
4318 MAINE AVE STE A, BALDWIN PARK, CA 91706(626) 962-5141(626) 962-5141 Get Directions Write a Review

NPPES record last updated: January 13, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Jan 13, 2026, Oct 10, 2025 (2 updates tracked since 2025).

About Jyh C Chang Md Professional Corporation NPPES

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

JYH C CHANG MD PROFESSIONAL CORPORATION (NPI 1316168636), doing business as Pacifica Sur Medical Group, is a healthcare organization registered as an internal medicine in Baldwin Park, California and active in the NPI registry since May 2007. The organization lists Jyh C Chang, President, as its authorized official.

NPPES Registry Identity

NPI1316168636
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameJYH C CHANG MD PROFESSIONAL CORPORATION
Location Address4318 MAINE AVE STE ABaldwin Park, CA 91706-3326
Mailing Address4318 Maine Ave Ste ABaldwin Park, CA 91706-3326 · (626) 962-5141 · Fax (626) 962-5141
Phone(626) 962-5141
Fax(626) 962-5141
Organization SubpartNo
Authorized OfficialJyh C ChangPresident · (626) 962-5141
Enumeration DateMay 2, 2007
Last NPPES UpdateJanuary 13, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 13, 2026
✔ NPI 1316168636 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
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.
4318 MAINE AVE STE A, Baldwin Park, CA 91706
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Other Names 2

Doing Business AsPacifica Sur Medical Group
Doing Business AsPacifica Sur Medical Group Inc

Other Identifiers 2

OtherBLUE SHIELDCA · Zzz52049z
MedicaidGR0071680CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES

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

DR. JYH C CHANG M.D.
Internal Medicine
4318 MAINE AVE STE A
BALDWIN PARK, CA 91706
Los Angeles County (626) 962-5141

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 Jyh C Chang MD Professional Corporation's NPI number?

The NPI number for Jyh C Chang MD Professional Corporation is 1316168636. It was assigned to this organization in the NPPES registry on May 2, 2007. The provider is doing business as Pacifica Sur Medical Group and Pacifica Sur Medical Group Inc.

Where is Jyh C Chang MD Professional Corporation located?

Jyh C Chang MD Professional Corporation is located at 4318 Maine Ave Ste A, Baldwin Park, CA 91706. The listed phone number is (626) 962-5141.

What is Jyh C Chang MD Professional Corporation's specialty?

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

When was this NPI record last updated?

The NPPES record for Jyh C Chang MD Professional Corporation was last updated on January 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.