Mario Nieto, M.D.
NPI 1356671994 · Anesthesiology Physician · Austin, TX
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mario Nieto, M.D. is a Anesthesiology Physician provider in Austin, TX (NPI 1356671994).
Provider details
- NPI number
- 1356671994
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- P2905 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
123 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 23 | $42 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 21 | $48 |
| Anesthesia for Extensive Surgery on Spine00670 | 15 | $382 |
| Anesthesia for Other Procedure on Lower Abdomen00840 | 14 | $170 |
| Insertion of Non-Tunneled Central Venous Tube for Infusion (5 Years Or Older)36556 | 14 | $81 |
| Anesthesia for Other Closed Procedure on Chest00520 | 13 | $129 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$44 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-01-04
- Last updated
- 2020-06-25
- Certified
- 2020-06-25
Frequently asked questions
- What is Mario Nieto's NPI number?
- Mario Nieto's National Provider Identifier (NPI) is 1356671994, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mario Nieto's specialty?
- Mario Nieto is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mario Nieto located?
- Mario Nieto's practice location on file with NPPES is 3705 Medical Pkwy, Austin, TX 78705-1019.
- What is Mario Nieto's phone number?
- The practice phone number listed in the NPPES registry for Mario Nieto is (512) 454-2554.
- Does Mario Nieto accept Medicare?
- Mario Nieto is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mario Nieto's NPI active?
- Yes — Mario Nieto's NPI (1356671994) is active in the NPPES registry as of the last update on 2020-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.