DR. MARY ELIZABETH BARTZ M.D.
NPI 1659321123
Family Medicine in Austin, TX
About Dr. Mary Elizabeth Bartz M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARY ELIZABETH BARTZ M.D. (NPI 1659321123) is an individual family medicine provider in Austin, Texas, licensed in Texas (H9781) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with St David's Medical Center, and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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
Dr. Mary Elizabeth Bartz M.d. 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 Reassignment
Medicare enrollment records show Mary Bartz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Austin, TX 78705
- Reassigned Medicare billing, Texas enrollment
- 6 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 3
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St David's Medical Center
Acute Care Hospitals · Austin, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78705 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.
AUSTIN, TX 78705
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 Bartz's NPI number?
The NPI number for Mary Bartz is 1659321123. It was assigned to this individual provider in the NPPES registry on May 12, 2006.
Where is Mary Bartz located?
Mary Bartz practices at 900 E 30th St Suite 300, Austin, TX 78705. The listed phone number is (512) 476-6555.
What is Mary Bartz's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mary Bartz enrolled in Medicare?
Yes. Mary Bartz 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 organization bills Medicare for Mary Bartz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Bartz reassigns Medicare benefits to Red River Family Practice LLP (Austin, 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 Bartz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Bartz accept?
Health plans from Blue Cross and Blue Shield of Texas, Oscar Insurance Company and UnitedHealthcare list Mary Bartz 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 Mary Bartz affiliated with any hospitals?
According to CMS data, Mary Bartz is affiliated with St David's Medical Center.
When was this NPI record last updated?
The NPPES record for Mary Bartz was last updated on November 10, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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. Mary Elizabeth Bartz, M.D. · NPI 1659321123
Family Medicine physician in Austin, Texas. Individual provider, active in the CMS NPPES registry since May 12, 2006.
## Identity
- **NPI:** 1659321123 (Entity type: Individual)
- **Enumerated:** May 12, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** H9781 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 900 E 30TH ST, SUITE 300, Austin, TX 78705-3326
- **Phone:** (512) 476-6555 · **Fax:** (512) 476-5611
## 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:** Red River Family Practice LLP (NPI 1861442170, Austin, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** November 10, 2009
- **Other identifiers:** Other H9781 (TX); Medicare ID-Type Unspecified 85T412 (TX); Other 85T412 (TX); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1659321123) · Data from the CMS NPPES public registry.