WEI MICHAEL SI MD
NPI 1467433532
Pathology - Anatomic Pathology & Clinical Pathology in Irving, TX
About Wei Michael Si Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WEI MICHAEL SI MD (NPI 1467433532) is an individual anatomic pathology & clinical pathology provider in Irving, Texas, licensed in Texas (M2103) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Christus Shreveport-bossier Health System, and is a graduate of Other (1991).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Wei Michael Si 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 Wei Si reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dallas, TX 75247
- Reassigned Medicare billing, Texas enrollment
- 77 clinicians in this Medicare group
Austin, TX 78758
- Reassigned Medicare billing, Texas and Louisiana enrollments
- Also billed through NPI 1538172028 (Louisiana)
- 107 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Christus Shreveport-Bossier Health System
Acute Care Hospitals · Shreveport, LAChristus Mother Frances Hospital
Acute Care Hospitals · Tyler, TXChristus Mother Frances Hospital Sulphur Springs
Acute Care Hospitals · Sulphur Springs, TXChristus St Michael Health System
Acute Care Hospitals · Texarkana, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 75063 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.
IRVING, TX 75063
IRVING, TX 75063
IRVING, TX 75063
IRVING, TX 75063
IRVING, TX 75063
IRVING, TX 75063
IRVING, TX 75063
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 Wei Si's NPI number?
The NPI number for Wei Si is 1467433532. It was assigned to this individual provider in the NPPES registry on November 7, 2005.
Where is Wei Si located?
Wei Si practices at 4770 Regent Blvd, Irving, TX 75063. The listed phone number is (972) 934-4300.
What is Wei Si's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Wei Si enrolled in Medicare?
Yes. Wei Si 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 Wei Si's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Wei Si reassigns Medicare benefits to 2 organizations: Propath Associates, PLLC (Dallas, TX) and Austin Pathology Associates (Austin, TX). 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 Wei Si's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Wei Si accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, HMO Louisiana, Molina Healthcare and Oscar Insurance Company list Wei Si 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 Wei Si affiliated with any hospitals?
According to CMS data, Wei Si is affiliated with Christus Shreveport-Bossier Health System, Christus Mother Frances Hospital, Christus Mother Frances Hospital Sulphur Springs and Christus St Michael Health System.
When was this NPI record last updated?
The NPPES record for Wei Si was last updated on July 21, 2022. 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.
# Wei Michael Si, MD · NPI 1467433532
Anatomic Pathology & Clinical Pathology physician in Irving, Texas. Individual provider, active in the CMS NPPES registry since November 7, 2005.
## Identity
- **NPI:** 1467433532 (Entity type: Individual)
- **Enumerated:** November 7, 2005
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** M2103 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4770 REGENT BLVD, Irving, TX 75063-2445
- **Phone:** (972) 934-4300
## 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): Propath Associates, PLLC (NPI 1902885890, Dallas, TX); Austin Pathology Associates (NPI 1669414330, Austin, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1991
## Record status
- **NPPES last updated:** July 21, 2022
- **Other identifiers:** Other P00241772 (TX); Medicaid 178022301 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1467433532) · Data from the CMS NPPES public registry.