LEWIS BUI D.O.
NPI 1780939991
Emergency Medicine in Cypress, TX
About Lewis Bui D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEWIS BUI D.O. (NPI 1780939991) is an individual emergency medicine provider in Cypress, Texas, licensed in Colorado (54789) and active in the NPI registry since July 2012. He is enrolled in Medicare PECOS, is affiliated with South Texas Health System, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Accepted Insurance
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
Lewis Bui D.o. 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
16Medicare enrollment records show Lewis Bui reassigns Medicare billing to 16 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Jersey Village, TX 77040
- Reassigned Medicare billing, Texas enrollment
- 10 clinicians in this Medicare group
Houston, TX 77079
- Reassigned Medicare billing, Texas enrollment
- 35 clinicians in this Medicare group
Houston, TX 77090
- Reassigned Medicare billing, Texas enrollment
- 18 clinicians in this Medicare group
Houston, TX 77027
- Reassigned Medicare billing, Texas enrollment
- 82 clinicians in this Medicare group
Beaumont, TX 77702
- Reassigned Medicare billing, Texas enrollment
- 160 clinicians in this Medicare group
Jasper, TX 75951
- Reassigned Medicare billing, Texas enrollment
- 133 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 1,452 clinicians in this Medicare group
Fort Worth, TX 76132
- Reassigned Medicare billing, Texas enrollment
- 37 clinicians in this Medicare group
Dallas, TX 75234
- Reassigned Medicare billing, Texas enrollment
- 25 clinicians in this Medicare group
Wylie, TX 75098
- Reassigned Medicare billing, Texas enrollment
- 19 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 2
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
South Texas Health System
Acute Care Hospitals · Edinburg, TXHca Houston Healthcare Clear Lake
Acute Care Hospitals · Webster, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77433 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Lewis Bui's NPI number?
The NPI number for Lewis Bui is 1780939991. It was assigned to this individual provider in the NPPES registry on July 13, 2012.
Where is Lewis Bui located?
Lewis Bui practices at 27160 Highway 290 Ste 107, Cypress, TX 77433. The listed phone number is (800) 991-6117.
What is Lewis Bui's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Lewis Bui enrolled in Medicare?
Yes. Lewis 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 Lewis Bui's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lewis Bui reassigns Medicare benefits to 16 organizations: Jones ER Physicians Staffing Inc (Jersey Village, TX), Srinivas Rao MD PA (Houston, TX), Houston ER Physicians, LLC (Houston, TX), Tk Emergency Physicians Group PLLC (Houston, TX), Jefferson Emergency Physicians, PLLC (Beaumont, TX) and 11 more organizations, listed in the Medicare section above. 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 Lewis Bui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lewis Bui accept?
Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Moda Health Plan, Inc., Oscar Health and Oscar Insurance Company and 1 other insurer list Lewis Bui 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.
Is Lewis Bui affiliated with any hospitals?
According to CMS data, Lewis Bui is affiliated with South Texas Health System and Hca Houston Healthcare Clear Lake.
When was this NPI record last updated?
The NPPES record for Lewis Bui was last updated on December 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Lewis Bui, D.O. · NPI 1780939991
Emergency Medicine physician in Cypress, Texas. Individual provider, active in the CMS NPPES registry since July 13, 2012.
## Identity
- **NPI:** 1780939991 (Entity type: Individual)
- **Enumerated:** July 13, 2012
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 54789 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 27160 HIGHWAY 290 STE 107, Cypress, TX 77433-8711
- **Phone:** (800) 991-6117 · **Fax:** (888) 812-8191
## 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:** 16 organizations under Medicare reassignment (form CMS-855R): Jones ER Physicians Staffing Inc (NPI 1861053738, Jersey Village, TX); Srinivas Rao MD PA (NPI 1972941318, Houston, TX); Houston ER Physicians, LLC (NPI 1750044871, Houston, TX); Tk Emergency Physicians Group PLLC (NPI 1942728019, Houston, TX); Jefferson Emergency Physicians, PLLC (NPI 1609559699, Beaumont, TX); and 11 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Lake Erie College Of Osteopathic Medicine, Erie, class of 2012
## Record status
- **NPPES last updated:** December 18, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1780939991) · Data from the CMS NPPES public registry.