TRI-VALLEY MEDICAL ASSOCIATES, INC.
NPI 1801047931
Internal Medicine in Livermore, CA
About Tri-valley Medical Associates, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TRI-VALLEY MEDICAL ASSOCIATES, INC. (NPI 1801047931) is a healthcare organization registered as an internal medicine in Livermore, California and active in the NPI registry since October 2008. The organization holds 2 active CLIA laboratory certificates, maintains a secondary practice location in Pleasanton, and lists Tsung Peter Wong, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 5
Secondary Practice Location 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Tri-valley Medical Associates, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
7Medicare enrollment records show 7 clinicians reassign Medicare billing to Tri-Valley Medical Associates, Inc., which bills Medicare for the services they deliver. Of these, 3 practice at this address and 5 within 10 miles. They are listed nearest first.
Clinicians, nearest first (7)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA 2
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 05D1100560
Tri-Valley Medical Associates · Livermore, CACertificate of Waiver 05D1103034
Tri-Valley Medical Associates, Inc · Pleasanton, CAFrequently 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 Tri-Valley Medical Associates, Inc.'s NPI number?
The NPI number for Tri-Valley Medical Associates, Inc. is 1801047931. It was assigned to this organization in the NPPES registry on October 7, 2008.
Where is Tri-Valley Medical Associates, Inc. located?
Tri-Valley Medical Associates, Inc. is located at 87 Fenton St Ste 210, Livermore, CA 94550. The listed phone number is (925) 371-8885.
What is Tri-Valley Medical Associates, Inc.'s specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Tri-Valley Medical Associates, Inc. enrolled in Medicare?
Yes. Tri-Valley Medical Associates, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Tri-Valley Medical Associates, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 3 Medicare specialties reassign their Medicare billing to Tri-Valley Medical Associates, Inc.. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Family Practice (5), Internal Medicine (1) and Nurse Practitioner (1). Of these, 3 practice at this address and 5 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Tri-Valley Medical Associates, Inc. hold CLIA laboratory certificates?
Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.
When was this NPI record last updated?
The NPPES record for Tri-Valley Medical Associates, Inc. was last updated on June 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Tri-Valley Medical Associates, Inc. · NPI 1801047931
Internal Medicine organization in Livermore, California. Organization record, active in the CMS NPPES registry since October 7, 2008.
## Identity
- **NPI:** 1801047931 (Entity type: Organization)
- **Enumerated:** October 7, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Tsung Wong, PRESIDENT
## Practice location
- **Address:** 87 FENTON ST STE 210, Livermore, CA 94550-4159
- **Phone:** (925) 371-8885 · **Fax:** (925) 371-8884
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 7 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Family Practice (5), Internal Medicine (1), Nurse Practitioner (1); 3 practice at this address and 5 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 23, 2026
- **CLIA laboratory certificates:** 2 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1801047931) · Data from the CMS NPPES public registry.