NPPES file of Aug 9, 2026

Mario Gerardo Casas

Certified Registered Nurse Anesthetist · Laredo, TX

Mario Gerardo Casas is a certified registered nurse anesthetist with a practice address in Laredo, Texas, and NPI 1124907001, issued on Aug 27, 2025. Check the license (Texas 1000435, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1124907001
Name
Mario Gerardo Casas
Primary taxonomy
Certified Registered Nurse Anesthetist 367500000X
License number
1000435 TX
Self-reported in NPPES; status is on the state search
Practice location
1700 E Saunders St, Laredo, TX 78041
Phone
(956) 796-5000
Enumerated
Aug 27, 2025
Record last updated
Nov 11, 2025
Medicare enrollment
Enrolled (PECOS I20260320003870); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest certified registered nurse anesthetist records → All 6,097 in Texas → Look up another NPI →

Also registered at 1700 E Saunders St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Hector Acosta Tapia, MDEmergency Medicine Physician1386669661
  2. Christian Agudelo, MDStudent in an Organized Health Care Education/Training Program1639872278
  3. Elizabeth AguileraEmergency Registered Nurse1558187377
  4. Ngozi Ajoku, MD/DOInternal Medicine Physician1306422944
  5. Amanda AmadorMedical-Surgical Registered Nurse1427841170
  6. Yuliana AnMedical-Surgical Registered Nurse1609769538

Verify Mario Gerardo Casas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license 1000435    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Hospitalist Medicine Physicians OF Texas - Dallas PLLCLaredo, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mario Gerardo Casas among 6,097 certified registered nurse anesthetist records in Texas

Mario Gerardo Casas is one of 6,097 certified registered nurse anesthetist records with a practice address in Texas. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 95% of them.

  • NPI issued2025 · 95% of these records are older, 1% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 78% of these records are
  • Graduated2025 · median 2014 among the 4,734 with a school on file
  • Record last updated2025 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Certified Registered Nurse Anesthetist providers in Texas

There are 6,097 certified registered nurse anesthetist records in Texas.

All 6,097 in Texas → Every provider in Laredo → Certified Registered Nurse Anesthetist nationwide →

The 8 certified registered nurse anesthetist records with the nearest ZIP codes

  1. Paul Errington, CRNALaredo, TX 780411306143896
  2. Jerome Nayigiziki, C.R.N.A.Laredo, TX 780411104814300
  3. Allen Plaskett, CRNALaredo, TX 780411851462253
  4. Ginger Waddell, CRNALaredo, TX 780411164670493
  5. Paola CasasLaredo, TX 780451376424317
  6. Guillermo Hernandez, MDLaredo, TX 780451003887795
  7. Teresa Maresh, CRNALaredo, TX 780451487605945
  8. Randelle Nataki, CRNALaredo, TX 780451134076748

Common questions

What is Mario Gerardo Casas's NPI number?

Mario Gerardo Casas's National Provider Identifier (NPI) is 1124907001, issued on Aug 27, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Mario Gerardo Casas located?

The NPPES record lists a practice address at 1700 E Saunders St, Laredo, TX, 78041. Phone: (956) 796-5000. Providers update this record themselves, so call before visiting.

How can I verify Mario Gerardo Casas's license?

NPPES lists Texas license number 1000435, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.