MARY G HARTZOG RN, CRNA
NPI 1598929036
Nurse Anesthetist, Certified Registered in Temple, TX
About Mary G Hartzog Rn, Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY G HARTZOG RN, CRNA (NPI 1598929036) is an individual nurse anesthetist, certified registered in Temple, Texas, licensed in Texas (AP116926) and active in the NPI registry since July 2008. She is affiliated with St David's Medical Center, maintains a secondary practice location in Austin, and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Mary G Hartzog Rn, Crna 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
4Medicare enrollment records show Mary Hartzog reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Austin, TX 78759
- Reassigned Medicare billing, Texas enrollment
- 840 clinicians in this Medicare group
Austin, TX 78745
- Reassigned Medicare billing, Texas enrollment
- 175 clinicians in this Medicare group
Mesquite, TX 75150
- Reassigned Medicare billing, Texas enrollment
- 710 clinicians in this Medicare group
Bradenton, FL 34208
- Reassigned Medicare billing, Texas enrollment
- 195 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 2
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 76508 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.
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 Hartzog's NPI number?
The NPI number for Mary Hartzog is 1598929036. It was assigned to this individual provider in the NPPES registry on July 14, 2008.
Where is Mary Hartzog located?
Mary Hartzog practices at 2401 S 31st St, Temple, TX 76508. The listed phone number is (254) 724-2111.
What is Mary Hartzog's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Mary Hartzog enrolled in Medicare?
Yes. Mary Hartzog 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 Mary Hartzog's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Hartzog reassigns Medicare benefits to 4 organizations: Austin Anesthesiology Group, PLLC (Austin, TX), Austin Gastroenterology Anesthesia Associates PLLC (Austin, TX), Endo Sedation LLC (Mesquite, TX) and Anesthesia Dynamics LLC (Bradenton, FL). 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 Mary Hartzog's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Hartzog accept?
Health plans from Blue Cross and Blue Shield of Texas and Sendero Health Plans, Local Nonprofit list Mary Hartzog 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 Hartzog affiliated with any hospitals?
According to CMS data, Mary Hartzog is affiliated with St David's Medical Center.
When was this NPI record last updated?
The NPPES record for Mary Hartzog was last updated on November 16, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 G Hartzog, RN, CRNA · NPI 1598929036
Nurse Anesthetist, Certified Registered physician in Temple, Texas. Individual provider, active in the CMS NPPES registry since July 14, 2008.
## Identity
- **NPI:** 1598929036 (Entity type: Individual)
- **Enumerated:** July 14, 2008
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** AP116926 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 2401 S 31ST ST, Temple, TX 76508-0001
- **Phone:** (254) 724-2111
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Austin Anesthesiology Group, PLLC (NPI 1598724304, Austin, TX); Austin Gastroenterology Anesthesia Associates PLLC (NPI 1427405810, Austin, TX); Endo Sedation LLC (NPI 1447792700, Mesquite, TX); Anesthesia Dynamics LLC (NPI 1073001012, Bradenton, FL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** November 16, 2022
- **Other identifiers:** Other 89461U (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1598929036) · Data from the CMS NPPES public registry.