Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. DEREK M PARKER PSY.D.
NPI 1568690923
Psychologist in Winfield, KS

Active since June 24, 2009PECOS EnrolledAccepts Medicare Assignment
33354 D STREET, WINFIELD, KS 67301(620) 331-1748(620) 417-0308 Get Directions Write a Review

NPPES record last updated: July 10, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 10, 2026, Mar 4, 2025, Apr 20, 2021 and 2 more (5 updates tracked since 2017).

About Dr. Derek M Parker Psy.d. NPPES

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

DR. DEREK M PARKER PSY.D. (NPI 1568690923) is an individual psychologist in Winfield, Kansas, licensed in Kansas (2981) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS, maintains a secondary practice location in Newton, and is a graduate of Other (2015).

NPPES Registry Identity

NPI1568690923
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. DEREK M PARKERCredential: PSY.D.
Location Address33354 D STREETWinfield, KS 67301
Mailing Address3354 D StreetWinfield, KS 67301 · (620) 331-1748
Fax(620) 417-0308
Sole ProprietorYes
Medical School CMSOtherGraduated 2015
Enumeration DateJune 24, 2009
Last NPPES UpdateJuly 10, 20265 updates tracked since enumeration
NPPES CertifiedJuly 10, 2026
NPI 1568690923 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 9

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Licenses Licensed in KS · 2981 Licensed in KS · 2441
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.

Also ListedPsychologist · Addiction (Substance Use Disorder)Taxonomy 103TA0400X · License 035 (KS)
Also ListedPsychologist · Adult Development & AgingTaxonomy 103TA0700X · License 2441 (KS)
Also ListedPsychologist · Cognitive & BehavioralTaxonomy 103TB0200X · License 2441 (KS)
Also ListedPsychologist · FamilyTaxonomy 103TF0000X
Also ListedPsychologist · ForensicTaxonomy 103TF0200X
Also ListedPsychologist · HealthTaxonomy 103TH0004X
Also ListedPsychologist · PsychoanalysisTaxonomy 103TP0814X · License 2441 (KS)
Also ListedPsychologist · Group PsychotherapyTaxonomy 103TP2701X · License 2441 (KS)
33354 D STREET, Winfield, KS 67301

Secondary Practice Location 1

Location 11901 E 1st StNewton, KS 67114-5010 · Phone (316) 284-6400 · Fax (316) 284-6490

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Derek M Parker Psy.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7012250830
PECOS Enrollment IDI20190520000699
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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 Derek Parker's NPI number?

The NPI number for Derek Parker is 1568690923. It was assigned to this individual provider in the NPPES registry on June 24, 2009.

Where is Derek Parker located?

Derek Parker practices at 33354 D Street, Winfield, KS 67301. The listed phone number is (620) 331-1748.

What is Derek Parker's specialty?

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

Is Derek Parker enrolled in Medicare?

Yes. Derek Parker is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Derek Parker accept?

Health plans from Blue Cross and Blue Shield of Kansas, Inc. and Providence Health Plan list Derek Parker as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Derek Parker was last updated on July 10, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.