What is Mary Loy's NPI number?

Mary Loy's National Provider Identifier (NPI) is 1457146490, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mary Loy's specialty?

Mary Loy is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).

Where is Mary Loy located?

Mary Loy's practice location on file with NPPES is 680 Langsdorf Dr Ste 108, Fullerton, CA 92831-3702.

What is Mary Loy's phone number?

The practice phone number listed in the NPPES registry for Mary Loy is (714) 519-3944.

Is Mary Loy's NPI active?

Yes — Mary Loy's NPI (1457146490) is active in the NPPES registry as of the last update on 2025-04-10.

IndividualActive

Mary Loy

NPI 1457146490 · Mental Health Counselor · Fullerton, CA

Mary Loy is a Mental Health Counselor provider in Fullerton, CA (NPI 1457146490).

Provider details

NPI number: 1457146490
Entity type: Individual
Primary specialty: Mental Health CounselorBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No
License: 18778 (CA)

Specialties & taxonomies

Mental Health CounselorPrimary101YM0800XLicense 18778 (CA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(55/100 index)

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

Registry tenure38% of score
1 yr 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

680 Langsdorf Dr Ste 108

Fullerton, CA 92831-3702

Phone: (714) 519-3944

Street-level locationGet directions

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Mailing address