Summary

Dr. Koek graduated from the Wayne State University School of Medicine,Wayne State University School of Medicine in 1985. He works in Los Angeles, CA and 1 other location and specializes in Psychiatry. Dr. Koek is affiliated with West Los Angeles Va Medical Center.

Quick Facts

  • 5
  • 41 years of experience
  • 15 insurance plans accepted
  • WAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
  • 1 specialty
  • 12 areas of expertise
  • 1 board certification
  • 1 hospital affiliation
  • 2 office locations
  • Male

Office Locations

Dr. Ralph Jan Koek has 2 locations

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Dr. Ralph Jan Koek, MDDr. Anthony Mattioli, DOBerlyne Louisius, APRN, RN, NPChristopher Yuvienco, APRN, RN, NP
PsychiatryPsychiatryPsychiatryPsychiatry
Accepts New Patients Accepts New Patients Accepts New Patients
41 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks English
Los Angeles , CALos Angeles , CALos Angeles , CALos Angeles , CA
Med School: WAYNE STATE UNIVERSITY SCHOOL OF MEDICINE Med School: Kansas City University of Medicine and Biosciences Med School: University of South Alabama Med School: California State University-Long Beach
Current Profile
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Insurance Plans Accepted by Dr. Ralph Jan Koek

  • Aetna
  • Anthem Blue Cross
  • Blue Shield of California
  • Cigna
  • HealthPartners
  • Kaiser Permanente
  • Kaiser Permanente - PPO
  • L.A. Care Health Plan
  • L.A. Care Health Plan - HMO
  • Magellan Health
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • UnitedHealthcare
  • UnitedHealthcare - HMO

Medical Specialties

Dr. Ralph Jan Koek has the following specialty

Specialty Expertise

Dr. Ralph Jan Koek has the following 12 areas of expertise

  • Attention Deficit Disorder (ADD) / Attention Deficit Hyperactivity Disorder (ADHD)
  • Attention-Deficit/Hyperactivity Disorder (ADHD)
  • Bipolar Disorder
  • Depression
  • Depressive Disorder
  • Insomnia
  • Manic Depressive Disorder
  • Mental Illness
  • Mood Disorders
  • Personality Disorder
  • Schizophrenia
  • Sleep Disorders

Certifications, License, & Education

41 Years Experience

MEDICAL LICENSE

Medical Doctor, California, 2026, Expired

EDUCATION & TRAINING

Medical School

WAYNE STATE UNIVERSITY SCHOOL OF MEDICINEGraduated in 1986
Wayne State University School Of MedicineGraduated in 1985

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Frequently Asked Questions

Is Dr. Ralph Koek accepting new patients?
Dr. Ralph Koek has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. Ralph Koek accept virtual/telehealth appointments?
Dr. Ralph Koek has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. Ralph Koek?
You can find contact information for Dr. Ralph Koek here on Vitals.
Does Dr. Ralph Koek accept my insurance?
You can see the insurance plans that Dr. Ralph Koek accepts on their Vitals profile.
Which hospitals is Dr. Ralph Koek affiliated with?
Dr. Ralph Koek is affiliated with West Los Angeles Va Medical Center.

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