MARY C BRENNAN MD
NPI 1710075403
Pediatrics in Fort Worth, TX
About Mary C Brennan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY C BRENNAN MD (NPI 1710075403) is an individual pediatrics provider in Fort Worth, Texas, licensed in Texas (H5846) and active in the NPI registry since October 2006. 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)
Mary C Brennan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Brennan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fort Worth, TX 76104
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Cook Childrens Physician Network
- 1,186 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 76132 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 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FORT WORTH, TX 76132
FORT WORTH, TX 76132
FORT WORTH, TX 76132
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 Mary Brennan's NPI number?
The NPI number for Mary Brennan is 1710075403. It was assigned to this individual provider in the NPPES registry on October 10, 2006.
Where is Mary Brennan located?
Mary Brennan practices at 6210 John Ryan Dr Ste 101, Fort Worth, TX 76132. The listed phone number is (817) 370-0840.
What is Mary Brennan's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Mary Brennan enrolled in Medicare?
Yes. Mary Brennan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Brennan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Brennan reassigns Medicare benefits to Cook Children's Physician Network (Fort Worth, TX). 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 Mary Brennan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Brennan accept?
Health plans from Baylor Scott and White Health Plan list Mary Brennan 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 Mary Brennan was last updated on May 10, 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.
# Mary C Brennan, MD · NPI 1710075403
Pediatrics physician in Fort Worth, Texas. Individual provider, active in the CMS NPPES registry since October 10, 2006.
## Identity
- **NPI:** 1710075403 (Entity type: Individual)
- **Enumerated:** October 10, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** H5846 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 6210 JOHN RYAN DR, STE 101, Fort Worth, TX 76132-4113
- **Phone:** (817) 370-0840 · **Fax:** (817) 370-1590
## 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:** Cook Children's Physician Network (NPI 1548230923, Fort Worth, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 10, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1710075403) · Data from the CMS NPPES public registry.