What is Melissa Mejia's NPI number?

Melissa Mejia's National Provider Identifier (NPI) is 1770016255, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Melissa Mejia's specialty?

Melissa Mejia is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).

Where is Melissa Mejia located?

Melissa Mejia's practice location on file with NPPES is 4688 Ontario Mills Pkwy, Ontario, CA 91764-5104.

What is Melissa Mejia's phone number?

The practice phone number listed in the NPPES registry for Melissa Mejia is (949) 685-4322.

Is Melissa Mejia's NPI active?

Yes — Melissa Mejia's NPI (1770016255) is active in the NPPES registry as of the last update on 2025-07-28.

IndividualActive

Melissa Mejia, M.S.,BCBA

NPI 1770016255 · Behavior Analyst · Ontario, CA

Melissa Mejia, M.S.,BCBA is a Behavior Analyst provider in Ontario, CA (NPI 1770016255).

Provider details

NPI number: 1770016255
Entity type: Individual
Primary specialty: Behavior AnalystBehavioral Health & Social Service Providers
Credential: M.S.,BCBA
Sex: Female
Sole proprietor: Yes
License: 1-17-24984 (CA)

Specialties & taxonomies

Behavior AnalystPrimary103K00000XLicense 1-17-24984 (CA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(70/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
9 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

4688 Ontario Mills Pkwy

Ontario, CA 91764-5104

Phone: (949) 685-4322

Street-level locationGet directions

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Mailing address