Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Viviana Montalvan, OTR/L

Occupational Therapist in Phoenix, AZ · enumerated 2008.

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

National Provider Identifier

1093986291

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Registry record

Entity type Individual (Type 1)

Name Viviana Montalvan

Credential OTR/L

Sex Female

Practice address Phoenix, AZ, 85042

Phone (602) 243-4231

Fax (602) 218-3212

Enumeration date Mar 14, 2008

Last updated in NPPES Mar 14, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 2657 (AZ) Primary

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 Viviana Montalvan practice?

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

What is the NPI number for Viviana Montalvan?

The National Provider Identifier (NPI) for Viviana Montalvan is 1093986291, 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 2008-03-14.