Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maria Elma Rivera, CNM, FNP

Q: What is the NPI number for Maria Rivera?

The National Provider Identifier (NPI) for Maria Rivera is 1558582171, a Type 1 (individual) record in the CMS NPPES registry.

Family Nurse Practitioner in Crystal City, TX · enumerated 2007.

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

National Provider Identifier

1558582171

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Registry record

Entity type Individual (Type 1)

Name Maria Elma Rivera

Credential CNM, FNP

Sex Female

Practice address 308 S Cesar Chavez Ave, Crystal City, TX, 78839

Phone (830) 374-2301

Fax (830) 374-9368

Enumeration date May 1, 2007

Last updated in NPPES Feb 27, 2024

Taxonomy & licenses

367A00000X Advanced Practice Midwife Physician Assistants & Advanced Practice Nursing Providers · License AP110357 (TX) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP110357 (TX) Primary

CNM · Certified Nurse Midwife: An advanced practice nurse specializing in pregnancy, childbirth, and reproductive care. About the CNM credential

Other identifiers

Identifier	Type	State	Issuer
080462703	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Maria Rivera practice?

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

What is the NPI number for Maria Rivera?

The National Provider Identifier (NPI) for Maria Rivera is 1558582171, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-27.