DR. ANDY NGOC TRUONG M.D.
NPI 1174583033
Internal Medicine in Fountain Valley, CA
About Dr. Andy Ngoc Truong M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDY NGOC TRUONG M.D. (NPI 1174583033) is an individual internal medicine provider in Fountain Valley, California, licensed in California (A66251) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Andy Ngoc Truong M.d. 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.
Medicare Billing Reassignment
Medicare enrollment records show Andy Truong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- 948 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92708 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FOUNTAIN VALLEY, CA 92708
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 Andy Truong's NPI number?
The NPI number for Andy Truong is 1174583033. It was assigned to this individual provider in the NPPES registry on March 24, 2006.
Where is Andy Truong located?
Andy Truong practices at 16027 Brookhurst St G-135, Fountain Valley, CA 92708. The listed phone number is (714) 323-6446.
What is Andy Truong's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Andy Truong enrolled in Medicare?
Yes. Andy Truong 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.
Which organization bills Medicare for Andy Truong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andy Truong reassigns Medicare benefits to Memorialcare Medical Foundation (Fountain Valley, CA). The 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 Andy Truong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Andy Truong was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Andy Ngoc Truong, M.D. · NPI 1174583033
Internal Medicine physician in Fountain Valley, California. Individual provider, active in the CMS NPPES registry since March 24, 2006.
## Identity
- **NPI:** 1174583033 (Entity type: Individual)
- **Enumerated:** March 24, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A66251 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 16027 BROOKHURST ST, G-135, Fountain Valley, CA 92708-1551
- **Phone:** (714) 323-6446 · **Fax:** (714) 844-9494
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Memorialcare Medical Foundation (NPI 1205167350, Fountain Valley, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 1996
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Other 00A662510 (CA); Medicaid 00A662510 (CA); Other A66251 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1174583033) · Data from the CMS NPPES public registry.