12500 Willowbrook Road
Cumberland, Maryland 21502


Meet Our Providers


Dr. Michael Ehlers
Medical Degree: George Washington University Medical School 
Internship: Beth Israel Hospital in New York
Residency: Sheppard and Enoch Pratt Hospital in Towson, Maryland.
Fellowship: Graduate Psychoanalyst at the Washington Psychoanalytic Institute.
Prior to joining WMHS: clinical director at the Thomas B. Finan Center in Cumberland for 3 years; full-time staff psychiatrist at Chestnut Lodge Hospital in Rockville, Maryland, for 20 years; corporate psychiatric consultant for IBM, Loral and Fannie Mae.  Also worked at the Carroll County Mental Health Clinic, the University of Maryland Student Health Center and the US Navy - National Naval Medical Center in Bethesda.  Certifications: Board Certified in Psychiatry; diplomat of the National Board of Medical Examiners; licensed to practice Psychiatry in Maryland.  Professional Interests: Certified in the administration of Buprenorphine for the treatment of Opioid Addiction.

Kevin H. Peterson, Ed.D. 
Title: Clinical Psychologist
Education:  Frostburg State University, Psychology
West Virginia University, Psychology
Internship: Thomas B. Finan Center/Lois E Jackson Unit, Cumberland, Maryland
Additional: Psychology Faculty at Frostburg State University, Private Practice, Medical Staff at WMHS

Jean H. Ruiz, CRNP
Jean Ruiz is a certified registered nurse practitioner with the Western Maryland Health System’s Behavioral Health Services.  She has been a practicing Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) since 2004 and as a Psychiatric Mental-Health Clinical Nurse Specialist since 1992.   Dr Ruiz has worked in a variety of private and hospital-based behavioral healthcare settings, and provided individual and group therapies.  She spent many years working as a therapist, nurse case manager, resource nurse and counselor.  Jean received her nursing degree from Shenandoah University and completed her Master’s at the University of Virginia in Charlottesville.  In 2003, she earned a post-Master’s certificate as a Psychiatric Nurse Practitioner from Shenandoah University and the following year she was certified as an Adult Psychiatric Mental Health Nurse Practitioner.

Dr. Alan N. Arnson
Alan N. Arnson, M.D. completed his undergraduate education at Yale University and the University of Bonn, Germany.  He received his medical degree from Cornell University in Ithaca, New York, and finished his psychiatric training at Vanderbilt University, Yale and the National Institute of Mental Health (NIMH).  Dr. Arnson is board-certified in Psychiatry.  From 1967 to 1986, he was in private practice and did government work in the Washington, D.C., area.  He was also on the clinical faculty of Georgetown Medical School. He moved to Garrett County in 1986 and began practicing with the Garrett County Health Department and the Somerset (Pennsylvania) Community Hospital.  Since 1990, he has served with Pastoral Counseling and the WMHS Behavioral Health Services. Dr. Arnson is a Distinguished Life Fellow of the American Psychiatric Association and a member of the Academy of Addiction Psychiatry.

Debra Schaaf, Ph.D.
She received her psychology degree from the University of Pittsburgh and completed her post-graduate work in clinical psychology at the University of Albany/SUNY in Albany, New York.  Debra did her internship at the MUSC College of Medicine in Charleston, South Carolina.  She is a licensed clinical psychologist and previously worked at HealthSouth Rehab Hospital in New York and was on the Physical Medicine and Rehabilitation faculty at the University of Michigan Hospitals and Health Centers in Ann Arbor.  

Dr. Gratiela Zbarcea
Medical Degree: Victor Babes University of Medicine & Pharmacy in Romania.
Residency: Psychiatry Residency of Tufts University - NEMF in Boston, Mass. 
Fellowship: Psychoanalytic Institute of New England (PINS), Boston 
Certifications: Board Certified in Psychiatry and Neurology
Prior to joining WMHS: Dr. Zbarcea did teaching and research at Tufts University School of Medicine and Harvard Medical School.  She served as medical director for psychiatric programs in Boston and North Carolina.  Dr. Zbarcea held several leadership positions at Wayne Memorial Hospital in Goldsboro, N.C.  Most recently, she was an inpatient psychiatrist at the Psychiatric Institute of Washington and also saw patients at the Walnut Street Community Health Care Center in Hagerstown.

Diana Pryor, CRNP
Diana received her Doctorate of Nursing Practice and B.S. in Nursing from Shenandoah University in Winchester, Virginia.  She earned her undergraduate degree in biology from Frostburg State University.  Diana has worked as a Staff Nurse/RN in the Trauma/Surgical Unit at Winchester Medical Center since 2011. She is a certified by Maryland Institute of Emergency Medical Services Systems in EMT-Basic, EMT-B Narcon Pilot Program, and the EMT-B EKG Pilot Program.  A native of Frostburg, Diana is active as a senior-rated member of the LaVale Rescue Squad.    

David K. Strickland, M.D. 
David received his medical degree from Wake Forest University School of Medicine in Winston-Salem, North Carolina, where he also completed his internship in family medicine.  Dr. Strickland did his residency in psychiatry at the University of Virginia Roanoke-Salem Psychiatric Residency program and completed a fellowship at the University of Hawaii John A. Burns School of Medicine.  He has been on the medical staff at hospitals in North Carolina, New York and Maryland.  Dr. Strickland is certified by the American Board of Psychiatry and Neurology. 

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