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Dr. Ploesser

General, Forensic and Integrative Psychiatry

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Markus Ploesser, MD

Diplomate of the American Board of Psychiatry and Neurology  

Markus Ploesser, MD is Board Certified in General and Forensic Psychiatry through ABPN. He is a fellow of the Royal College of Physicians and Surgeons of Canada. Dr.Ploesser is also a diplomate of ABPS in Integrative Medicine. Dr. Ploesser completed his Psychiatry residency training at Columbia University and his fellowship training in Forensic Psychiatry at the University of Washington. He is a graduate of Columbia University School of Law in the LLM program, and member of the New York State Bar. Dr. Ploesser completed additional fellowship training in integrative medicine at the University of Arizona, Andrew Weil Center for Integrative Medicine. He completed subspecialty training in Integrative Psychiatry through the Integrative Psychiatry Institute, LLC in Boulder Colorado. As such, he is expert in advanced laboratory testing in mental health, such as Organic Acid Testing, food sensitivity and toxicity panels as well as organic causes of mental affections, such as chronic lyme/babesia infections and thyroid abnormalities. He is knowledgeable in the therapeutic use of psychedelic substances and provides Ketamine therapy for treatment-resistant depression. 


Dr. Ploesser has a vast array of clinical interests. His particular areas of expertise include adult ADHD, integrative and anti-aging medicine. He also specializes in forensic psychiatry and evaluations. He is a designated Qualified Medical Evaluator to conduct Workers’ Compensation Evaluations in California. Dr. Ploesser provides services to clients who reside in California, New York, Washington State, Hawaii, Colorado, and British Columbia. 


Dr. Ploesser is at the forefront of Integrative Medicine and prefers to minimize the need for prescription medications wherever possible. He implements the Walsh Institute's advanced nutrient therapy methods. He knows that what we eat affects our mental health and that our lifestyle changes make impact our mental wellness.


  • ADHD

  • Integrative Medicine

  • Depression/Anxiety

  • Bipolar Disorder 

  • Trauma

  • Psychosis

  • Substance use 

  • Addictions

  • Medication Management

  • Diagnostic Assessments

  • Second Opinions 

  • Holistic Treatment Recommendations

  • Risk assessment & Risk Management (self-harm/suicide threats/ stalking/bullying/harassment/violence/workplace/domestic)

  • Civil and Criminal Forensic Psychiatric Evaluations

  • Forensic Psychiatric Expert

  • Independent Medical Examinations

  • Teaching/Education

Expertise Dr Ploesser
Dr Ploesser Educaton


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