Mary Hartzog, RN, CRNA
NPI 1598929036 · Certified Registered Nurse Anesthetist · Temple, TX
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Hartzog, RN, CRNA is a Certified Registered Nurse Anesthetist provider in Temple, TX (NPI 1598929036).
Provider details
- NPI number
- 1598929036
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RN, CRNA
- Sex
- Female
- Sole proprietor
- No
- License
- 697733 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
32 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 21 | $115 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 11 | $146 |
Typical Medicare-allowed amounts for these services range $115–$146 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 3801 N Lamar BlvdAustin, TX 78756-4080Phone: (512) 750-1348
Registry dates
- Enumerated
- 2008-07-14
- Last updated
- 2022-11-16
- Certified
- 2022-11-16
Frequently asked questions
- What is Mary Hartzog's NPI number?
- Mary Hartzog's National Provider Identifier (NPI) is 1598929036, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Hartzog's specialty?
- Mary Hartzog is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Hartzog located?
- Mary Hartzog's practice location on file with NPPES is 2401 S 31st St, Temple, TX 76508-0001.
- What is Mary Hartzog's phone number?
- The practice phone number listed in the NPPES registry for Mary Hartzog is (254) 724-2111.
- Does Mary Hartzog accept Medicare?
- Mary Hartzog is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Hartzog's NPI active?
- Yes — Mary Hartzog's NPI (1598929036) is active in the NPPES registry as of the last update on 2022-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.