PHONG HUY BUI MD
NPI 1316177462
Internal Medicine - Endocrinology, Diabetes & Metabolism in Fountain Valley, CA
About Phong Huy Bui Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PHONG HUY BUI MD (NPI 1316177462) is an individual endocrinology, diabetes & metabolism provider in Fountain Valley, California, licensed in California (A101682) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through May 5, 2027, and is a graduate of University Of California, Irvine, California College Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses 2
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
Phong Huy Bui 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.
Medicare Billing Reassignments
2Medicare enrollment records show Phong Bui reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- 3 clinicians in this Medicare group
Westminster, CA 92683
- Reassigned Medicare billing, California enrollment
- 75 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.
CLIA Laboratory Certificates CMS CLIA
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 05D2095394
Phong H Bui, Inc · Fountain Valley, CAAreas of Expertise CMS Part B claims 8
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.
Referred Medical Equipment & Supplies CMS DME claims 4
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
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 Phong Bui's NPI number?
The NPI number for Phong Bui is 1316177462. It was assigned to this individual provider in the NPPES registry on July 23, 2009.
Where is Phong Bui located?
Phong Bui practices at 16055 Brookhurst St Suite #c, Fountain Valley, CA 92708. The listed phone number is (714) 839-2400.
What is Phong Bui's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is Phong Bui enrolled in Medicare?
Yes. Phong Bui 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 organizations bill Medicare for Phong Bui's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Phong Bui reassigns Medicare benefits to 2 organizations: Phong H Bui Inc (Fountain Valley, CA) and Family Choice Aco Inc (Westminster, CA). Each 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 Phong Bui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Does Phong Bui hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 05D2095394) is associated with this NPI, valid through May 5, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Phong Bui was last updated on July 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Phong Huy Bui, MD · NPI 1316177462
Endocrinology, Diabetes & Metabolism physician in Fountain Valley, California. Individual provider, active in the CMS NPPES registry since July 23, 2009.
## Identity
- **NPI:** 1316177462 (Entity type: Individual)
- **Enumerated:** July 23, 2009
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **State license:** A101682 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 16055 BROOKHURST ST, SUITE #C, Fountain Valley, CA 92708
- **Phone:** (714) 839-2400
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Phong H Bui Inc (NPI 1770909830, Fountain Valley, CA); Family Choice Aco Inc (NPI 1396416863, Westminster, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 2006
## Record status
- **NPPES last updated:** July 9, 2021
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1316177462) · Data from the CMS NPPES public registry.