DR. XEM MA BUI MD
NPI 1194390187
Psychiatry & Neurology - Neurology in Medford, OR
About Dr. Xem Ma Bui Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. XEM MA BUI MD (NPI 1194390187) is an individual neurology provider in Medford, Oregon, licensed in North Carolina (2025-01217) and active in the NPI registry since May 2021. She is enrolled in Medicare PECOS, is affiliated with Moses H. Cone Memorial Hospital, The, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses 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
Dr. Xem Ma 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 Reassignment
Medicare enrollment records show Xem Bui reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Summerfield, NC 27358
- Reassigned Medicare billing, North Carolina enrollment
- 691 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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Moses H. Cone Memorial Hospital, The
Acute Care Hospitals · Greensboro, NCAsante Three Rivers Medical Center
Acute Care Hospitals · Grants Pass, ORAsante Ashland Community Hospital
Acute Care Hospitals · Ashland, ORAsante Rogue Regional Medical Center
Acute Care Hospitals · Medford, ORSky Lakes Medical Center
Acute Care Hospitals · Klamath Falls, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97504 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Xem Bui's NPI number?
The NPI number for Xem Bui is 1194390187. It was assigned to this individual provider in the NPPES registry on May 23, 2021.
Where is Xem Bui located?
Xem Bui practices at 2900 State St, Medford, OR 97504. The listed phone number is (541) 789-5790.
What is Xem Bui's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Xem Bui enrolled in Medicare?
Yes. Xem 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 organization bills Medicare for Xem Bui's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Xem Bui reassigns Medicare benefits to Moses Cone Physician Services, Inc. (Summerfield, NC). 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 Xem Bui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Xem Bui accept?
Health plans from BridgeSpan Health Company, Cigna Healthcare and Regence BlueCross BlueShield of Oregon list Xem 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 Xem Bui affiliated with any hospitals?
According to CMS data, Xem Bui is affiliated with Moses H. Cone Memorial Hospital, The, Asante Three Rivers Medical Center, Asante Ashland Community Hospital, Asante Rogue Regional Medical Center and Sky Lakes Medical Center.
When was this NPI record last updated?
The NPPES record for Xem Bui was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Xem Ma Bui, MD · NPI 1194390187
Neurology physician in Medford, Oregon. Individual provider, active in the CMS NPPES registry since May 23, 2021.
## Identity
- **NPI:** 1194390187 (Entity type: Individual)
- **Enumerated:** May 23, 2021
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 2025-01217 (North Carolina)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2900 STATE ST, Medford, OR 97504-8458
- **Phone:** (541) 789-5790
## 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:** Moses Cone Physician Services, Inc. (NPI 1124574827, Summerfield, NC), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** November 12, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1194390187) · Data from the CMS NPPES public registry.