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Active NPI 1568690923 Individual Practitioner Male Practitioner

Dr. Derek M Parker , PsyD

Psychologist • Winfield, KS

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Derek Parker, PsyD is a certified Psychologist practicing in Winfield, KS. With approximately 11 years of clinical experience since completing medical education in 2015, Dr. Parker delivers high-quality medical care to the local community at 33354 D STREET.

Dr. Parker is affiliated with Ralph Bharati, Md, Pa and accepts Medicare assignment.

Frequently performed procedures and clinical services include psychotherapy. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

33354 D Street

Winfield, KS 67301

Telephone 6203311748
Fax 6204170308
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Other

Graduation Year

2015

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Psychologist in Winfield, KS

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
11 Yrs Matches City Avg
City Avg: 11.0 Yrs
State Avg: 25.8 Yrs
Regional Practice Density
2 Specialists

Practicing in Winfield, KS (630 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
38.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Parker (11 Years) 11 Yrs
Winfield Specialty Average (11.0 Years) 11.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2020)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
90837 Psychotherapy, 60 minutes
121 26 $200.00 $123.14
90837 Psychotherapy, 60 minutes
97 15 $200.00 $123.62

Medical Specialties & State Licenses

CMS Verified: 2026-07-10
Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

State License KS 2981

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.

Psychologist - Group Psychotherapy

NUCC Taxonomy Code: 103TP2701X

State License KS 2441

A psychologist who specializes in group psychology and group psychotherapy that is an evidenced-based specialty that prepares group leaders to identify and capitalize on developmental and healing possibilities embedded in the interpersonal/intrapersonal functioning of individual group members as well as collectively for the group. Emphasis is placed on the use of group dynamics to assist and treat individual group members. The specialty is applicable to all age groups, children, adolescents, adults and older adults, for a wide variety of conditions and concerns, and in numerous and diverse settings.

Psychologist - Forensic

NUCC Taxonomy Code: 103TF0200X

A psychologist whose specialty is characterized by activities primarily intended to provide professional psychological expertise within the judicial and legal systems.

Psychologist - Cognitive & Behavioral

NUCC Taxonomy Code: 103TB0200X

State License KS 2441

A psychologist who reflects an experimental-clinical approach distinguished by use of principles of human learning and development and theories of cognitive processing to promote meaningful change in maladaptive human behavior and thinking.

Psychologist - Addiction (Substance Use Disorder)

NUCC Taxonomy Code: 103TA0400X

State License KS 035

A psychologist with a proficiency that involves the application of psychological treatment of addiction stemming from the use of alcohol and other psychoactive substances (e.g., nicotine, marijuana, cocaine, heroin) or behavioral addictions (e.g., gambling) with the aim of cessation or reduction of use and/or the amelioration of emotional, behavioral, interpersonal and other problems arising from the addictive behavior.

Psychologist - Health

NUCC Taxonomy Code: 103TH0004X

A psychologist who specializes in clinical health psychology that investigates and implements clinical services across diverse populations and settings to promote health and well-being and to prevent, treat, and manage illness and disability. Clinical health psychology sees health as the confluence of psychological, social, cultural, and biological factors and applies this understanding to professional activities including:<br/>* Research<br/>* Clinical service<br/>* Consulting with, educating, and supervising other health care providers and psychologists<br/>* Advising organizations, institutions, the public, and policymakers

Psychologist

NUCC Taxonomy Code: 103T00000X

State License KS 2441

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.

Psychologist - Adult Development & Aging

NUCC Taxonomy Code: 103TA0700X

State License KS 2441

A psychologist who specializes in geropsychology, which applies the knowledge and methods of psychology to understanding and helping older persons and their families to maintain well-being, overcome problems and achieve maximum potential during later life. Professional geropsychology appreciates the wide diversity among older adults, the complex ethical issues that can arise in geriatric practice and the importance of interdisciplinary models of care.

Psychologist - Psychoanalysis

NUCC Taxonomy Code: 103TP0814X

State License KS 2441

A psychologist whose specialty is distinguished from other specialties by its body of knowledge and its intensive treatment approaches. It aims at structural changes and modifications of a person's personality. Psychoanalysis promotes awareness of unconscious, maladaptive and habitually recurrent patterns of emotion and behavior, allowing previously unconscious aspects of the self to become integrated and promoting optimal functioning, healing and creative expression.

Psychologist - Family

NUCC Taxonomy Code: 103TF0000X

A psychologist whose specialty is founded on principles of systems theory with the interpersonal system of the family the focus of assessment, intervention and research.

Hospital & Practice Group Affiliations

Ralph Bharati, Md, Pa

8911 E Orme St, Wichita, KS 672072424

Phone: 3166867884

Secondary Practice Locations

1901 E 1st St

Newton, KS 671145010

Phone: 3162846400

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
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Counselor - Professional

NPI 1013866433
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Physician Assistant - Medical

NPI 1033519830

Physician Assistant

Barbara Scofield

Counselor - Addiction (Substance Use Disorder)

NPI 1033556550
Angela Hammack

Licensed Practical Nurse

NPI 1043402548
Janice Chenoweth

Registered Nurse - Home Health

NPI 1043601297
Patricia Miller

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NPI 1063518983

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

16 Historical Events
📍
Updated Practice Location July 10, 2026

Registered at 33354 D STREET, WINFIELD, KS 67301 (Tel: 6203311748)

📍
Updated Business Mailing Address July 10, 2026

Registered at 3354 D STREET, WINFIELD, KS 67301 (Tel: 6203311748)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 10, 2026

Psychologist (License #2441 in KS)

📍
Updated Business Mailing Address April 20, 2021

Registered at PO BOX 467, NEWTON, KS 671140467 (Tel: 3162846400)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 20, 2021

Psychologist (License #2441 in KS)

NPI Profile Active August 29, 2017

NPI status registered as active in NPPES database

📍
Updated Practice Location August 29, 2017

Registered at 1901 E 1ST ST, NEWTON, KS 671145010 (Tel: 6204170308)

📍
Updated Business Mailing Address August 29, 2017

Registered at 131 N. HILLSIDE, ELDORADO, KS 67042 (Tel: (620) 417-0308)

👤
Provider Name / Credentials Updated August 29, 2017

Recorded as DEREK PARKER, PSY.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 29, 2017

Counselor (License #KSA65-4016,65-6601 in KS)

NPI Profile Active June 24, 2009

NPI status registered as active in NPPES database

📍
Updated Practice Location June 24, 2009

Registered at 4504 ZACHARY WAY, SACRAMENTO, CA 958423535 (Tel: 9169936377)

📍
Updated Business Mailing Address June 24, 2009

Registered at 4504 ZACHARY WAY, SACRAMENTO, CA 958423535 (Tel: 9169936377)

👤
Provider Name / Credentials Updated June 24, 2009

Recorded as DEREK PARKER

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 24, 2009

Counselor (License #KSA65-4016,65-6601 in KS)

🟢
Initial NPI Registration & Enumeration June 24, 2009

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1568690923
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 24, 2009
Last Update: July 10, 2026
Sole Proprietor: Yes

Mailing Address

3354 D Street

Winfield, KS 67301

Phone: 6203311748

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.