Jyh C Chang MD Professional Corporation
NPI 1316168636 · Internal Medicine Physician · Baldwin Park, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jyh C Chang MD Professional Corporation is a Internal Medicine Physician organization in Baldwin Park, CA (NPI 1316168636).
Provider details
- NPI number
- 1316168636
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Jyh Chang, President(626) 962-5141
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Pacifica Sur Medical Group
- Doing business as
- Pacifica Sur Medical Group Inc
Registry dates
- Enumerated
- 2007-05-02
- Last updated
- 2026-01-13
- Certified
- 2026-01-13
Frequently asked questions
- What is Jyh C Chang MD Professional Corporation's NPI number?
- Jyh C Chang MD Professional Corporation's National Provider Identifier (NPI) is 1316168636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Jyh C Chang MD Professional Corporation?
- Jyh C Chang MD Professional Corporation is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jyh C Chang MD Professional Corporation located?
- Jyh C Chang MD Professional Corporation's practice location on file with NPPES is 4318 Maine Ave Ste a, Baldwin Park, CA 91706-3326.
- What is Jyh C Chang MD Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Jyh C Chang MD Professional Corporation is (626) 962-5141.
- Does Jyh C Chang MD Professional Corporation accept Medicare?
- Jyh C Chang MD Professional Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Jyh C Chang MD Professional Corporation?
- The authorized official listed on Jyh C Chang MD Professional Corporation's NPPES record is Jyh Chang, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Jyh C Chang MD Professional Corporation's NPI active?
- Yes — Jyh C Chang MD Professional Corporation's NPI (1316168636) is active in the NPPES registry as of the last update on 2026-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.