Our Physicians

Nadia Haddad, MD

Chief Medical Officer and Director of Chemical Dependency Services

Roderick O’Brien, MD

Director of Intensive Treatment Units

Ari Goldschmidt, PMHNP

Gregory Finnoff, DO

Internal Medicine

Claudia Clopton, MD

Director of ECT

Isabella Michna, MD

Director of Adult Inpatient Services

Joel Michalak, PA-C

Adolescent Specialist

Mycroft Smith, MD

Director of Adolescent Inpatient Services

Wesley Tate, MD

Director of Outpatient Service Line

Our Leadership Team

Sean Forster
MSN, RN
Chief Executive Officer
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Sean Forster, MSN, RN

Chief Executive Officer

Sean Forster has over ten years of experience in psychiatric services. Sean started his career as a Nursing Assistant in assisted living homes while he progressed through his schooling and obtained first is LPN and then his BSN-RN Degree. Sean worked as a behavioral health unit nurse and progressed into a coordinator, case manager, and Director of inpatient behavioral health services in North Dakota. Sean also oversaw outpatient mental health services from the clinic, PHP, and IOP programs before moving to Colorado and joining Centennial Peaks Hospital as their CNO in 2017. In 2019, Sean transitioned from CNO to the hospital CEO.

Patty Rivers
CPA
Chief Financial Officer
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Patty Rivers, CPA

Chief Financial Officer

Patty Rivers joined Centennial Peaks Hospital in January 2020. Patty graduated from the University of Colorado-Boulder, the University of Nebraska, and the University of Alaska. She began her accounting and finance career with the international accounting firm KPMG, and also has experience as the CFO of a large hospital system in Alaska. She has 14 years of experience in behavioral health facilities in Colorado. She is licensed in Colorado as a Certified Public Accountant (CPA).

Kelly Grebe
Director of Business Development
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Kelly Grebe

Director of Business Development

Kelly Grebe has worked in mental health for over 15 years. She has served as a wilderness counselor, group leader, mentor, senior guide, and vocational specialist. She studied psychology and sociology at Northwest Missouri State University. She completed graduate studies in adventure-based psychotherapy at Prescott College in Arizona. She has been a successful business owner, she started the first commercial bike to farm tours in Boulder County and she helped a treatment center transition to an employee-owned model. Kelly joined Centennial Peaks in 2021 and she is committed to making a positive impact on the community through her role as Director of Business Development.

Elyse Marinelli
LCSW
Director of Risk Management and Performance Improvement
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Elyse Marinelli, LCSW

Director of Risk Management and Performance Improvement

Elyse Marinelli received her Master of Social Work degree from Colorado State University and is an LCSW in the state of Colorado. She joined Centennial Peaks Hospital in 2017 as a social worker on the adolescent unit. She was promoted to Social Work Coordinator before transitioning into the role of Director of Risk Management and Performance Improvement in 2020. Elyse has 7 years of clinical experience in residential treatment and hospitals working with children, adolescents, adults, and families. She is trained in Trauma-Informed Care which enables her to assist in individualized treatment. This enables her to ensure that patients are on appropriate precautions during their treatment to maximize safety and ensure each patient has a therapeutic environment.

John Guenther
Director of Plant Operations
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John Guenther

Director of Plant Operations

John Guenther began his career working within the treatment center units at Colorados juvenile detention centers for seven years as a youth counselor. In 2006, he joined the team at Centennial Peaks Hospital as a unit specialist. John spent the next two years growing and delivering clinical care to adolescents enrolled in the long-term care program before transitioning into mechanical contracting. In 2010, John became a maintenance technician and after a year was promoted to Director of Plant Operations. Since then, he has been promoted to Senior Director of Plant Operations providing support and oversight to Centennial Peaks two Colorado sister facilities, supporting operations and regulatory compliance at all three hospitals.

Erika Donnellan
MA, BCBA, SPHR, SHRM-SCP
Human Resources Director
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Erika Donnellan, MA, BCBA, SPHR, SHRM-SCP

Human Resources Director

Erika joined Centennial Peaks Hospital in 2018 as the Director of Human Resources. She received her Master’s degree in Industrial Organizational Psychology, with a focus on Organizational Behavior Management (OBM), at Western Michigan University. She began her career in Applied Behavioral Analysis; seeking to improve organizational effectiveness and quality care using the principles of Performance Management. Her career shifted into Human Resources over the years focusing on all phases of people management including full cycle talent acquisition, employee relations, performance management, retention, compensation, benefit programs, and coaching support to the leadership team. She is dually certified in Human Resources with a Senior Professional in Human Resources (SPHR) and Society for Human Resources- Senior Certified Professional (SHRM-SCP).

Anmarie Masters
M. Ed, RHIA, CPCS, CPMSM
Director of HIM
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Anmarie Masters, M.Ed, RHIA, CPCS, CPMSM

Director of HIM

Anmarie Masters is the Director of Health Information Management Services for Centennial Peaks Hospital. She joined Centennial Peaks in 2014. She has 17 years of experience in the medical field. Anmarie earned her Bachelor of Science degree in Health Information Management from Regis University in 2005 and in 2009, she completed a master’s degree program from Colorado State University. Anmarie became a certified Registered Health Information Administrator in 2006 through the American Health Information Management Association.

Alexander Rhone
Director of Utilization Review
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Alexander Rhone

Director of Utilization Review

Alexander Rhone launched his second career in 2008 by returning to school for a Master of Science in Psychology. He has worked as an emergency clinician, DBT therapist, and as a utilization coordinator for a Medicaid company. He values compassionate service and recovery focused treatment.

Nancy Burlack
Ed. D, LMFT
Director of Outpatient
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Nancy Burlak, Ed.D, LMFT

Director of Outpatient

Nancy Burlak earned her Doctorate Degree in Counseling Psychology in 2014, and also holds Master’s degrees in both Psychology and Criminal Counseling. Dr. Burlak is a licensed Marriage and Family Therapist in the states of Colorado and California and specializes in trauma treatment as a Certified Clinical Trauma Professional (CCTP). Along with her dedication to serving others, Dr. Burlak brings over 25 years of experience in the mental health field as both a clinician and leader across a variety of settings. Dr. Burlak joined Centennial Peaks in 2019 as the Director of Outpatient Services after working as a surveyor with the Joint Commission. Passionate about meeting the specific mental health needs of our community, Dr. Burlak has developed outpatient programming to include several specialty therapy groups offered in the Centennial Peaks Outpatient Department.

Danielle Worden
Director of Business Office
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Danielle Worden

Director of Business Office

Danielle is originally from San Diego, California, and moved to Colorado in 2006. Danielle joined UHS in 2015 as a financial counselor and found her passion for behavioral health and hospital finance. Danielle has been a certified Paralegal since 2014 but changed her degree to Accounting through SNHU in 2017. Danielle joined Centennial Peaks as Business Office Director in 2020.

Laura Burnett-Tubbs
MA, LPC
Director of Intake
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Laura Burnett-Tubbs, MA LPC

Director of Intake

Laura Burnett-Tubbs is the Director of Intake at Centennial Peaks Hospital. She has a Bachelor’s of Science in Neuropsychology from Ithaca College in upstate New York and a Masters in Contemplative Psychotherapy from Naropa University in Colorado. Laura has worked as a clinician in multiple ER’s and community crisis centers, as well as having my own private practice. She began working at Centennial Peaks in June 2019.

Robert Cameron
MSN, RN
Chief Nursing Officer
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Robert Cameron, MSN, RN

Chief Nursing Officer

Rob Cameron earned his Bachelor of Science Degree in Nursing from the University of Colorado in 2009 and his Master of Science Degree in Nursing Leadership from Western Governors University in 2015. Rob brings to the team more than 30 years of experience in healthcare and 20 years of experience in nursing, including Emergency Medicine, Critical Care nursing, nursing education, Correctional Care as well as Behavioral Health nursing and leadership. Rob joined Centennial Peaks in 2020 as the Chief Nursing Officer.

Sara Haislet
LCSW
Director of Clinical Services
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Sara Haislet, LCSW

Director of Clinical Services

Sara Haislet earned her Master’s degree in Social Work from Portland State University in 2014 and is a Licensed Clinical Social Worker in Colorado. Sara brings to the team over 10 years of experience in the mental health field. She began her career in 2009 as a mental health tech in Oregon prior to earning her master’s degree and has since worked in community and inpatient mental health across the country specializing in trauma-informed crisis mental health services. Sara joined Centennial Peaks in 2019 as a Social Worker and was then promoted into the Social Work Coordinator position before joining the leadership team as the Director of Clinical Services.

Always Here to Help

Centennial Peaks Hospital is available 24 hours a day, seven days a week to provide a no-cost mental health assessment for you or your loved one. Call us at 303-673-9990 or visit our Louisville, CO facility to get started. In the case of a medical emergency or crisis, please dial 911 or go to the nearest emergency room.