DR. ROSE M WALCZAK MD
NPI 1578748257
Pediatrics in San Antonio, TX
About Dr. Rose M Walczak Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROSE M WALCZAK MD (NPI 1578748257) is an individual pediatrics provider in San Antonio, Texas, licensed in Illinois (036.126390) and active in the NPI registry since December 2007. She is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Rose M Walczak Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Rose Walczak reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Antonio, TX 78207
- Reassigned Medicare billing, Texas enrollment
- 453 clinicians in this Medicare group
Oak Brook, IL 60523
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Rush University Medical Group
- 2,169 clinicians in this Medicare group
Chicago, IL 60611
- Reassigned Medicare billing, Illinois enrollment
- 826 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 78207 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.
SAN ANTONIO, TX 78207
SAN ANTONIO, TX 78207
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 Rose Walczak's NPI number?
The NPI number for Rose Walczak is 1578748257. It was assigned to this individual provider in the NPPES registry on December 31, 2007.
Where is Rose Walczak located?
Rose Walczak practices at 333 N Santa Rosa St, San Antonio, TX 78207. The listed phone number is (210) 704-3718.
What is Rose Walczak's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Rose Walczak enrolled in Medicare?
Yes. Rose Walczak is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Rose Walczak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rose Walczak reassigns Medicare benefits to 3 organizations: Baylor College Of Medicine (San Antonio, TX), Rush University Medical Center (Oak Brook, IL) and Lurie Children's Medical Group Inc (Chicago, IL). 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 Rose Walczak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rose Walczak accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Rose Walczak 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.
When was this NPI record last updated?
The NPPES record for Rose Walczak was last updated on January 15, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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. Rose M Walczak, MD · NPI 1578748257
Pediatrics physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since December 31, 2007.
## Identity
- **NPI:** 1578748257 (Entity type: Individual)
- **Enumerated:** December 31, 2007
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 036.126390 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 333 N SANTA ROSA ST, San Antonio, TX 78207-3108
- **Phone:** (210) 704-3718
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Baylor College Of Medicine (NPI 1285079764, San Antonio, TX); Rush University Medical Center (NPI 1801375696, Oak Brook, IL); Lurie Children's Medical Group Inc (NPI 1518064716, Chicago, IL) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 15, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1578748257) · Data from the CMS NPPES public registry.