ELLEN DIAS DE OLIVEIRA CHIANG MD
NPI 1790425148
Student in an Organized Health Care Education/Training Program in San Francisco, CA
About Ellen Dias De Oliveira Chiang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELLEN DIAS DE OLIVEIRA CHIANG MD (NPI 1790425148) is an individual student in an organized health care education/training program in San Francisco, California and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS.
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 (PECOS)
Ellen Dias De Oliveira Chiang Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
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 FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
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 Ellen Chiang's NPI number?
The NPI number for Ellen Chiang is 1790425148. It was assigned to this individual provider in the NPPES registry on March 31, 2022.
Where is Ellen Chiang located?
Ellen Chiang practices at 521 Parnassus Ave Fl 7, San Francisco, CA 94143. The listed phone number is (415) 353-1529.
What is Ellen Chiang's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Ellen Chiang enrolled in Medicare?
Yes. Ellen Chiang is registered in the Medicare PECOS enrollment system.
When was this NPI record last updated?
The NPPES record for Ellen Chiang was last updated on September 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 days 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.
# Ellen Dias De Oliveira Chiang, MD · NPI 1790425148
Student in an Organized Health Care Education/Training Program provider in San Francisco, California. Individual provider, active in the CMS NPPES registry since March 31, 2022.
## Identity
- **NPI:** 1790425148 (Entity type: Individual)
- **Enumerated:** March 31, 2022
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** No
## Practice location
- **Address:** 521 PARNASSUS AVE FL 7, San Francisco, CA 94143-2206
- **Phone:** (415) 353-1529
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
## Record status
- **NPPES last updated:** September 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1790425148) · Data from the CMS NPPES public registry.