What is Alexandra Lyon's NPI number?

Alexandra Lyon's National Provider Identifier (NPI) is 1649939380, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Alexandra Lyon's specialty?

Alexandra Lyon is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).

Where is Alexandra Lyon located?

Alexandra Lyon's practice location on file with NPPES is 8334 Clairemont Mesa Blvd Ste 101, San Diego, CA 92111-1319.

What is Alexandra Lyon's phone number?

The practice phone number listed in the NPPES registry for Alexandra Lyon is (619) 992-5818.

Is Alexandra Lyon's NPI active?

Yes — Alexandra Lyon's NPI (1649939380) is active in the NPPES registry as of the last update on 2026-03-19.

IndividualActive

Alexandra Lyon, PSY.D.

NPI 1649939380 · Psychologist · San Diego, CA

Alexandra Lyon, PSY.D. is a Psychologist provider in San Diego, CA (NPI 1649939380).

Provider details

NPI number: 1649939380
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: PSY.D.
Sex: Female
Sole proprietor: Yes
License: 33043 (CA)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 33043 (CA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(61/100 index)

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

Registry tenure38% of score
4 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

8334 Clairemont Mesa Blvd Ste 101

San Diego, CA 92111-1319

Phone: (619) 992-5818

Street-level locationGet directions

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Mailing address