What is Larry Messer's NPI number?

Larry Messer's National Provider Identifier (NPI) is 1578604187, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Larry Messer's specialty?

Larry Messer is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).

Where is Larry Messer located?

Larry Messer's practice location on file with NPPES is 10210 N 92nd St, Scottsdale, AZ 85258-4509.

What is Larry Messer's phone number?

The practice phone number listed in the NPPES registry for Larry Messer is (480) 882-7460.

Is Larry Messer's NPI active?

Yes — Larry Messer's NPI (1578604187) is active in the NPPES registry as of the last update on 2014-09-16.

IndividualActive

Larry Messer, PSYD

NPI 1578604187 · Clinical Neuropsychologist · Scottsdale, AZ

Larry Messer, PSYD is a Clinical Neuropsychologist provider in Scottsdale, AZ (NPI 1578604187).

Provider details

NPI number: 1578604187
Entity type: Individual
Primary specialty: Clinical NeuropsychologistBehavioral Health & Social Service Providers
Credential: PSYD
Sex: Male
Sole proprietor: No
License: 3533 (AZ)

Specialties & taxonomies

Clinical NeuropsychologistPrimary103G00000XLicense 3533 (AZ)
Behavioral Health & Social Service Providers
Psychologist103T00000XLicense 3533 (AZ)
Behavioral Health & Social Service Providers
Cognitive & Behavioral Psychologist103TB0200XLicense 3533 (AZ)
Behavioral Health & Social Service Providers
Clinical Psychologist103TC0700XLicense 3533 (AZ)
Behavioral Health & Social Service Providers
Health Service Psychologist103TH0100XLicense 3533 (AZ)
Behavioral Health & Social Service Providers
Rehabilitation Psychologist103TR0400XLicense 3533 (AZ)

Profile Score

Detailed profile(90/100 index)

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

Registry tenure38% of score
19 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

10210 N 92nd St

Suite 101

Scottsdale, AZ 85258-4509

Phone: (480) 882-7460

Fax: (480) 391-3898

Street-level locationGet directions

More AZ providers

Mailing address

Po Box 20291

Mesa, AZ 85277-0291

Enumerated: 2007-02-08
Last updated: 2014-09-16

Frequently asked questions

What is Larry Messer's NPI number?: Larry Messer's National Provider Identifier (NPI) is 1578604187, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Larry Messer's specialty?: Larry Messer is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
Where is Larry Messer located?: Larry Messer's practice location on file with NPPES is 10210 N 92nd St, Scottsdale, AZ 85258-4509.
What is Larry Messer's phone number?: The practice phone number listed in the NPPES registry for Larry Messer is (480) 882-7460.
Is Larry Messer's NPI active?: Yes — Larry Messer's NPI (1578604187) is active in the NPPES registry as of the last update on 2014-09-16.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.