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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARK J FOREST PH.D.
NPI 1497743355
Psychologist - Clinical in Newtown, PA

Active since October 13, 2005
110 S STATE ST, NEWTOWN, PA 18940(215) 579-1262 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Mark J Forest Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK J FOREST PH.D. (NPI 1497743355) is an individual clinical provider in Newtown, Pennsylvania, licensed in Pennsylvania (PS005255L) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1497743355
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. MARK J FORESTCredential: PH.D.
Location Address110 S STATE STNewtown, PA 18940-3508
Mailing Address105 Greenbrook CtNew Hope, PA 18938-1074 · (215) 862-6292
Phone(215) 579-1262
Sole ProprietorNo
Enumeration DateOctober 13, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1497743355 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in PA · PS005255L
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
110 S STATE ST, Newtown, PA 18940
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Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SHELLEY ROBERTSON JOSEPH PSY.D.
Psychologist
110 S STATE ST
NEWTOWN, PA 18940
Bucks County (215) 704-1278
DR. BRAD ISSERMAN PH.D
Psychologist (Counseling)
110 S STATE ST
NEWTOWN, PA 18940
Bucks County (215) 579-1262

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Forest's NPI number?

The NPI number for Mark Forest is 1497743355. It was assigned to this individual provider in the NPPES registry on October 13, 2005.

Where is Mark Forest located?

Mark Forest practices at 110 S State St, Newtown, PA 18940. The listed phone number is (215) 579-1262.

What is Mark Forest's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Mark Forest was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.