VIVIAN SUN MD
NPI 1295891703
Psychiatry & Neurology - Child & Adolescent Psychiatry in Concord, CA
About Vivian Sun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
VIVIAN SUN MD (NPI 1295891703) is an individual child & adolescent psychiatry provider in Concord, California, licensed in California (A99510) and active in the NPI registry since December 2006. She has opted out of Medicare through September 1, 2026 and remains eligible to order and refer.
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Opted out of Medicare
Vivian Sun Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from September 1, 2016 through September 1, 2026.
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.
CONCORD, CA 94520
CONCORD, CA 94520
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 Vivian Sun's NPI number?
The NPI number for Vivian Sun is 1295891703. It was assigned to this individual provider in the NPPES registry on December 29, 2006.
Where is Vivian Sun located?
Vivian Sun practices at 1420 Willow Pass Rd Suite 200, Concord, CA 94520. The listed phone number is (925) 646-5480.
What is Vivian Sun's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.
Is Vivian Sun enrolled in Medicare?
No. Vivian Sun has opted out of Medicare through September 1, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.
What insurance does Vivian Sun accept?
Health plans from Providence Health Plan list Vivian Sun as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Vivian Sun was last updated on February 17, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.
# Vivian Sun, MD · NPI 1295891703
Child & Adolescent Psychiatry physician in Concord, California. Individual provider, active in the CMS NPPES registry since December 29, 2006.
## Identity
- **NPI:** 1295891703 (Entity type: Individual)
- **Enumerated:** December 29, 2006
- **Primary specialty:** Psychiatry & Neurology - Child & Adolescent Psychiatry · taxonomy 2084P0804X
- **State license:** A99510 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1420 WILLOW PASS RD, SUITE 200, Concord, CA 94520-5223
- **Phone:** (925) 646-5480
## Medicare
- **Medicare:** Opted out of Medicare (opt-out affidavit on file, in effect through September 1, 2026); services are provided under private contract
## Record status
- **NPPES last updated:** February 17, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1295891703) · Data from the CMS NPPES public registry.