Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Arnaldo Martinez Rivera, MD

Orthopaedic Surgery Physician in Saint Louis, MO · enumerated 2016.

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

National Provider Identifier

1396292348

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Registry record

Entity type Individual (Type 1)

Name Dr. Arnaldo Martinez Rivera

Credential MD

Sex Male

Practice address 1 Childrens Pl, Ste 1b, Saint Louis, MO, 63110

Phone (314) 514-3500

Fax (314) 878-7678

Enumeration date Sep 7, 2016

Last updated in NPPES Sep 29, 2025

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 036177324 (IL) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 2023005416 (MO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
200124798	Medicaid	MO	-

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

What is the NPI number for Arnaldo Martinez Rivera?

The National Provider Identifier (NPI) for Arnaldo Martinez Rivera is 1396292348, a Type 1 (individual) record in the CMS NPPES registry.

Where does Arnaldo Martinez Rivera practice?

The practice location on file with NPPES is in Saint Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-29.