What is Mark Masi's NPI number?

Mark Masi's National Provider Identifier (NPI) is 1992745921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Masi's specialty?

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

Where is Mark Masi located?

Mark Masi's practice location on file with NPPES is 3295 Arlington Heights Rd, Arlington Heights, IL 60004-1565.

What is Mark Masi's phone number?

The practice phone number listed in the NPPES registry for Mark Masi is (847) 253-6698.

Is Mark Masi's NPI active?

Yes — Mark Masi's NPI (1992745921) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Mark Masi, PSYD

NPI 1992745921 · Clinical Psychologist · Arlington Heights, IL

Mark Masi, PSYD is a Clinical Psychologist provider in Arlington Heights, IL (NPI 1992745921).

Provider details

NPI number: 1992745921
Entity type: Individual
Primary specialty: Clinical PsychologistBehavioral Health & Social Service Providers
Credential: PSYD
Sex: Male

Practice location

3295 Arlington Heights Rd

Suite 114

Arlington Heights, IL 60004-1565

Phone: (847) 253-6698

Street-level locationGet directions

More IL providers

Mailing address

3295 Arlington Heights Rd

Arlington Heights, IL 60004-1565

Specialties & taxonomies

Clinical PsychologistPrimary103TC0700X
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(84/100 index)

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

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
83% 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.

Enumerated: 2006-06-07
Last updated: 2007-07-08

Frequently asked questions

What is Mark Masi's NPI number?: Mark Masi's National Provider Identifier (NPI) is 1992745921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark Masi's specialty?: Mark Masi is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
Where is Mark Masi located?: Mark Masi's practice location on file with NPPES is 3295 Arlington Heights Rd, Arlington Heights, IL 60004-1565.
What is Mark Masi's phone number?: The practice phone number listed in the NPPES registry for Mark Masi is (847) 253-6698.
Is Mark Masi's NPI active?: Yes — Mark Masi's NPI (1992745921) is active in the NPPES registry as of the last update on 2007-07-08.

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

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions