DIEM VO
NPI 1639798374
Nurse Anesthetist, Certified Registered in Port Arthur, TX
About Diem Vo NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIEM VO (NPI 1639798374) is an individual nurse anesthetist, certified registered in Port Arthur, Texas, licensed in Texas (1002047) and active in the NPI registry since April 2020. She is affiliated with Christus Southeast Texas- St Elizabeth and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
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
Diem Vo 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
8Medicare enrollment records show Diem Vo reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Port Arthur, TX 77640
- Reassigned Medicare billing, Texas enrollment
- 127 clinicians in this Medicare group
Beaumont, TX 77701
- Reassigned Medicare billing, Texas enrollment
- 76 clinicians in this Medicare group
Beaumont, TX 77702
- Reassigned Medicare billing, Texas enrollment
- 710 clinicians in this Medicare group
Houston, TX 77091
- Reassigned Medicare billing, Texas enrollment
- 319 clinicians in this Medicare group
Houston, TX 77042
- Reassigned Medicare billing, Texas enrollment
- 30 clinicians in this Medicare group
Dallas, TX 75201
- Reassigned Medicare billing, Texas enrollment
- 24 clinicians in this Medicare group
Fort Worth, TX 76104
- Reassigned Medicare billing, Texas enrollment
- 509 clinicians in this Medicare group
Fort Worth, TX 76109
- Reassigned Medicare billing, Texas enrollment
- 1,612 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 7
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.
Christus Southeast Texas- St Elizabeth
Acute Care Hospitals · Beaumont, TXBaptist Beaumont Hospital
Acute Care Hospitals · Beaumont, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77640 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORT ARTHUR, TX 77640
PORT ARTHUR, TX 77640
PORT ARTHUR, TX 77640
PORT ARTHUR, TX 77640
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 Diem Vo's NPI number?
The NPI number for Diem Vo is 1639798374. It was assigned to this individual provider in the NPPES registry on April 13, 2020.
Where is Diem Vo located?
Diem Vo practices at 2555 Jimmy Johnson Blvd, Port Arthur, TX 77640. The listed phone number is (409) 724-7389.
What is Diem Vo's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Diem Vo enrolled in Medicare?
Yes. Diem Vo 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 Diem Vo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diem Vo reassigns Medicare benefits to 8 organizations: Sherman MD Provider Inc (Port Arthur, TX), Anesthesia Associates Group PLLC (Beaumont, TX), Endo Sedation LLC (Beaumont, TX), Dynamic Anesthesia Providers PLLC (Houston, TX), Vascular Anesthesia Associates PLLC (Houston, TX) and 3 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 Diem Vo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diem Vo accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 2 other insurers list Diem Vo 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 Diem Vo affiliated with any hospitals?
According to CMS data, Diem Vo is affiliated with Christus Southeast Texas- St Elizabeth and Baptist Beaumont Hospital.
When was this NPI record last updated?
The NPPES record for Diem Vo was last updated on January 7, 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.
# Diem Vo · NPI 1639798374
Nurse Anesthetist, Certified Registered physician in Port Arthur, Texas. Individual provider, active in the CMS NPPES registry since April 13, 2020.
## Identity
- **NPI:** 1639798374 (Entity type: Individual)
- **Enumerated:** April 13, 2020
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 1002047 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 2555 JIMMY JOHNSON BLVD, Port Arthur, TX 77640-2007
- **Phone:** (409) 724-7389
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Sherman MD Provider Inc (NPI 1588550008, Port Arthur, TX); Anesthesia Associates Group PLLC (NPI 1477078202, Beaumont, TX); Endo Sedation LLC (NPI 1548817471, Beaumont, TX); Dynamic Anesthesia Providers PLLC (NPI 1346752326, Houston, TX); Vascular Anesthesia Associates PLLC (NPI 1346706173, Houston, TX); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** January 7, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1639798374) · Data from the CMS NPPES public registry.