What is Mark Pesner's NPI number?

Mark Pesner's National Provider Identifier (NPI) is 1861555336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Pesner's specialty?

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

Where is Mark Pesner located?

Mark Pesner's practice location on file with NPPES is 271 US Highway 46, Fairfield, NJ 07004-2440.

What is Mark Pesner's phone number?

The practice phone number listed in the NPPES registry for Mark Pesner is (973) 276-9040.

Does Mark Pesner accept Medicare?

Mark Pesner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Mark Pesner's NPI active?

Yes — Mark Pesner's NPI (1861555336) is active in the NPPES registry as of the last update on 2007-07-08.

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Mark Pesner, PH.D.

NPI 1861555336 · Psychologist · Fairfield, NJ

Mark Pesner, PH.D. is a Psychologist provider in Fairfield, NJ (NPI 1861555336).

Provider details

NPI number: 1861555336
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: PH.D.
Sex: Male
Sole proprietor: Yes
License: 2562 (NJ)

Practice location

271 US Highway 46

Suite G101

Fairfield, NJ 07004-2440

Phone: (973) 276-9040

Fax: (973) 276-9062

Street-level locationGet directions

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Mailing address

271 US Highway 46

Fairfield, NJ 07004-2440

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 2562 (NJ)
Behavioral Health & Social Service Providers

Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(91/100 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.

Enumerated: 2006-12-18
Last updated: 2007-07-08

Frequently asked questions

What is Mark Pesner's NPI number?: Mark Pesner's National Provider Identifier (NPI) is 1861555336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark Pesner's specialty?: Mark Pesner is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
Where is Mark Pesner located?: Mark Pesner's practice location on file with NPPES is 271 US Highway 46, Fairfield, NJ 07004-2440.
What is Mark Pesner's phone number?: The practice phone number listed in the NPPES registry for Mark Pesner is (973) 276-9040.
Does Mark Pesner accept Medicare?: Mark Pesner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Mark Pesner's NPI active?: Yes — Mark Pesner's NPI (1861555336) 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