Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ronald M. Castro, CRNA

Certified Registered Nurse Anesthetist in Round Rock, TX · enumerated 2006 · practices at Greater Texas Neuromonitoring LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821058447

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Registry record

Entity type Individual (Type 1)

Name Ronald M. Castro

Credential CRNA

Sex Male

Practice address 2000 S Mays St Ste 201, Round Rock, TX, 78664

Phone (512) 244-4272

Enumeration date Mar 27, 2006

Last updated in NPPES Jan 6, 2021

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 580093 (TX) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License AP104232 (TX) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
040648	Other	TX	CRNA CERTIFICATE
0889339-03	Medicaid	TX	-
088933905	Medicaid	TX	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Ronald Castro practice?

The practice location on file with NPPES is in Round Rock, TX. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Ronald Castro?

The National Provider Identifier (NPI) for Ronald Castro is 1821058447, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-06.