Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melissa Leon Sierra

Rehabilitation Practitioner in Campbell, CA · enumerated 2020.

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

National Provider Identifier

1770193146

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Registry record

Entity type Individual (Type 1)

Name Melissa Leon Sierra

Sex Female

Practice address 251 Llewellyn Ave, Campbell, CA, 95008

Phone (408) 379-3790

Enumeration date Jul 31, 2020

Last updated in NPPES Feb 10, 2026

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

171M00000X Case Manager/Care Coordinator Other Service Providers Secondary

103K00000X Behavior Analyst Behavioral Health & Social Service Providers Secondary

172V00000X Community Health Worker Other Service Providers Secondary

171400000X Health & Wellness Coach Other Service Providers · License 6CB8BAA130 (CA) Secondary

225400000X Rehabilitation Practitioner Respiratory, Developmental, Rehabilitative and Restorative Service Providers 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.

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Frequently asked questions

What specialty is Melissa Leon Sierra?

Melissa Leon Sierra is registered in NPPES with the primary taxonomy of Rehabilitation Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Larry Hanville Marriage & Family Therapist · Campbell, CA NPI 1811093917 Donald Taylor Clinical Social Worker · Campbell, CA NPI 1831269877 Linda Nunn Marriage & Family Therapist · Campbell, CA NPI 1245300383 Lieu Tran Clinical Social Worker · Campbell, CA NPI 1336219278 Shireena Dubey Marriage & Family Therapist · Campbell, CA NPI 1407926348 Cassandra Harms Marriage & Family Therapist · Campbell, CA NPI 1881764959 Elva Carrillo Clinical Social Worker · Campbell, CA NPI 1427128024 Emq Children and Family Services Public Health or Welfare Agency · Campbell, CA NPI 1730250200

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-10.