THIEN DAN BUI MD
NPI 1386148419
Student in an Organized Health Care Education/Training Program in Wilmington, DE
About Thien Dan Bui Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THIEN DAN BUI MD (NPI 1386148419) is an individual student in an organized health care education/training program in Wilmington, Delaware and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Thien Dan Bui Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Thien Dan Bui reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92120
- Reassigned Medicare billing, California enrollment
- 13,921 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.
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.
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
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 Thien Dan Bui's NPI number?
The NPI number for Thien Dan Bui is 1386148419. It was assigned to this individual provider in the NPPES registry on March 22, 2018.
Where is Thien Dan Bui located?
Thien Dan Bui practices at 1600 Rockland Rd, Wilmington, DE 19803. The listed phone number is (302) 651-4200.
What is Thien Dan Bui's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Thien Dan Bui enrolled in Medicare?
Yes. Thien Dan Bui is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Thien Dan Bui's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thien Dan Bui reassigns Medicare benefits to Southern California Permanente Medical Group (San Diego, 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 Thien Dan Bui'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 Thien Dan Bui was last updated on December 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Thien Dan Bui, MD · NPI 1386148419
Student in an Organized Health Care Education/Training Program provider in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since March 22, 2018.
## Identity
- **NPI:** 1386148419 (Entity type: Individual)
- **Enumerated:** March 22, 2018
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** No
## Practice location
- **Address:** 1600 ROCKLAND RD, Wilmington, DE 19803-3607
- **Phone:** (302) 651-4200
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Southern California Permanente Medical Group (NPI 1225060742, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 6, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1386148419) · Data from the CMS NPPES public registry.