DR. MARGARET PEGGY WARDLAW M.D., PH.D.
NPI 1265793541
Pediatrics in Austin, TX
About Dr. Margaret Peggy Wardlaw M.d., Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARGARET PEGGY WARDLAW M.D., PH.D. (NPI 1265793541) is an individual pediatrics provider in Austin, Texas, licensed in Texas (BP1-0042821) and active in the NPI registry since June 2012. She 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)
Dr. Margaret Peggy Wardlaw M.d., Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Margaret Wardlaw reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Austin, TX 78723
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Dell Childrens Medical Group
- 576 clinicians in this Medicare group
Richmond, VA 23298
- Reassigned Medicare billing, Virginia enrollment
- 2,481 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78723 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
AUSTIN, TX 78723
AUSTIN, TX 78723
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 Margaret Wardlaw's NPI number?
The NPI number for Margaret Wardlaw is 1265793541. It was assigned to this individual provider in the NPPES registry on June 4, 2012.
Where is Margaret Wardlaw located?
Margaret Wardlaw practices at 4900 Mueller Blvd Suite 3s.066c, Austin, TX 78723. The listed phone number is (512) 324-0165.
What is Margaret Wardlaw's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Margaret Wardlaw enrolled in Medicare?
Yes. Margaret Wardlaw is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Margaret Wardlaw's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Wardlaw reassigns Medicare benefits to 2 organizations: Dell Children's Medical Group (Austin, TX) and Mcv Associated Physicians (Richmond, VA). 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 Margaret Wardlaw'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 Margaret Wardlaw was last updated on June 4, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Dr. Margaret Peggy Wardlaw, M.D., PH.D. · NPI 1265793541
Pediatrics physician in Austin, Texas. Individual provider, active in the CMS NPPES registry since June 4, 2012.
## Identity
- **NPI:** 1265793541 (Entity type: Individual)
- **Enumerated:** June 4, 2012
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** BP1-0042821 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4900 MUELLER BLVD, SUITE 3S.066C, Austin, TX 78723-3079
- **Phone:** (512) 324-0165
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Dell Children's Medical Group (NPI 1326072943, Austin, TX); Mcv Associated Physicians (NPI 1710959457, Richmond, VA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 4, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1265793541) · Data from the CMS NPPES public registry.