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

MR. DOUGLAS LIETZKE PSYCHOLOGIST
NPI 1437106150
Psychologist in Pottstown, PA

Active since May 28, 2006
1446 FARMINGTON AVE, SUITE 104, POTTSTOWN, PA 19464(610) 323-8844(610) 987-0276 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mr. Douglas Lietzke Psychologist NPPES

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

MR. DOUGLAS LIETZKE PSYCHOLOGIST (NPI 1437106150) is an individual psychologist in Pottstown, Pennsylvania, licensed in Pennsylvania (PS000394L) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1437106150
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameMR. DOUGLAS LIETZKECredential: PSYCHOLOGIST
Location Address1446 FARMINGTON AVE, SUITE 104Pottstown, PA 19464-1892
Mailing Address1446 Farmington Ave, Suite 104Pottstown, PA 19464-1892 · (610) 323-8844 · Fax (610) 987-0276
Fax(610) 987-0276
Sole ProprietorNo
Enumeration DateMay 28, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1437106150 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in PA · PS000394L
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
1446 FARMINGTON AVE, Pottstown, PA 19464

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 Douglas Lietzke's NPI number?

The NPI number for Douglas Lietzke is 1437106150. It was assigned to this individual provider in the NPPES registry on May 28, 2006.

Where is Douglas Lietzke located?

Douglas Lietzke practices at 1446 Farmington Ave Suite 104, Pottstown, PA 19464. The listed phone number is (610) 323-8844.

What is Douglas Lietzke's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

When was this NPI record last updated?

The NPPES record for Douglas Lietzke 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 42 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.