NPI Portal NPI Lookup & Verification

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

Marissa Dina Riojas, L.AC.

Acupuncturist in Pacific Grove, CA · enumerated 2018.

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

National Provider Identifier

1609351535

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Registry record

Entity type Individual (Type 1)
Name Marissa Dina Riojas
Credential L.AC.
Sex Female
Practice address Pacific Grove, CA, 93950
Phone (831) 393-4876
Enumeration date Sep 26, 2018
Last updated in NPPES Sep 26, 2018

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

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License 17909 (CA) Primary
LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC credential

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

Is NPI 1609351535 active?
Yes, as of the latest NPPES snapshot, NPI 1609351535 is active (record last updated 2018-09-26).
How do I verify Marissa Riojas's NPI record?
Cross-check NPI 1609351535 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-26.