YANNI MICHELLE CHANG MD
NPI 1922629880
Psychiatry & Neurology - Addiction Medicine in San Diego, CA
About Yanni Michelle Chang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
YANNI MICHELLE CHANG MD (NPI 1922629880) is an individual addiction medicine provider in San Diego, California, licensed in California (A202863) and active in the NPI registry since May 2020. She is enrolled in Medicare PECOS and is a graduate of University Of Washington School Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses 2
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
Yanni Michelle Chang Md 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SAN DIEGO, CA 92103
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 Yanni Chang's NPI number?
The NPI number for Yanni Chang is 1922629880. It was assigned to this individual provider in the NPPES registry on May 2, 2020.
Where is Yanni Chang located?
Yanni Chang practices at 4094 4th Ave, San Diego, CA 92103. The listed phone number is (619) 515-2545.
What is Yanni Chang's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Medicine, with taxonomy code 2084A0401X.
Is Yanni Chang enrolled in Medicare?
Yes. Yanni 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 Yanni Chang was last updated on August 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Yanni Michelle Chang, MD · NPI 1922629880
Addiction Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since May 2, 2020.
## Identity
- **NPI:** 1922629880 (Entity type: Individual)
- **Enumerated:** May 2, 2020
- **Primary specialty:** Psychiatry & Neurology - Addiction Medicine · taxonomy 2084A0401X
- **State license:** A202863 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4094 4TH AVE, San Diego, CA 92103-2143
- **Phone:** (619) 515-2545
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** University Of Washington School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** August 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1922629880) · Data from the CMS NPPES public registry.