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

JOSEPH S MACIEJKO PH.D.
NPI 1922096791
Psychologist in Davenport, IA

Active since October 06, 2005
4455 E 56TH ST, DAVENPORT, IA 52807(563) 355-2577(563) 355-4015 Get Directions Write a Review

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

About Joseph S Maciejko Ph.d. NPPES

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

JOSEPH S MACIEJKO PH.D. (NPI 1922096791) is an individual psychologist in Davenport, Iowa, licensed in Iowa (00085) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1922096791
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameJOSEPH S MACIEJKOCredential: PH.D.
Location Address4455 E 56TH STDavenport, IA 52807-2995
Mailing Address865 Lincoln Rd, Ste L10Bettendorf, IA 52722-4190 · (563) 355-9191 · Fax (563) 355-3419
Fax(563) 355-4015
Sole ProprietorNo
Enumeration DateOctober 6, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1922096791 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Licenses Licensed in IA · 00085 Licensed in IA · 00240
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.
4455 E 56TH ST, Davenport, IA 52807

Other Identifiers 3

Other42652IA · Wellmark Health Plan
Medicaid1083568IA
OtherIA0195John Deere Health Plan

Other Providers at the Same Location NPPES 20

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

Social Worker (Clinical)
4455 E 56TH ST
DAVENPORT, IA 52807
Psychologist
4455 E 56TH ST
DAVENPORT, IA 52807
Social Worker (Clinical)
4455 E 56TH ST
DAVENPORT, IA 52807
Social Worker
4455 E 56TH ST
DAVENPORT, IA 52807
Social Worker
4455 E 56TH ST
DAVENPORT, IA 52807
Counselor (Mental Health)
4455 E 56TH ST
DAVENPORT, IA 52807
Psychiatry & Neurology (Psychiatry)
4455 E 56TH ST
DAVENPORT, IA 52807
Social Worker (Clinical)
4455 E 56TH ST
DAVENPORT, IA 52807

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 Joseph Maciejko's NPI number?

The NPI number for Joseph Maciejko is 1922096791. It was assigned to this individual provider in the NPPES registry on October 6, 2005.

Where is Joseph Maciejko located?

Joseph Maciejko practices at 4455 E 56th St, Davenport, IA 52807. The listed phone number is (563) 355-2577.

What is Joseph Maciejko'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 Joseph Maciejko 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.