
Board certified in
- Family Medicine by the American Osteopathic Board of Family Physicians (AOBFP)
- Addiction Medicine by both the American Board of Preventive Medicine (ABPM) and AOBFP
Additional Accolades
- Certified Physician Executive
- Medical Review Officer
- Distinguished Fellow of the American Society of Addiction Medicine (DFASAM)
- Fellow of the American Osteopathic Academy of Addiction Medicine (FAOAAM)
- Current President for the American Osteopathic Academy of Addiction Medicine

Our facility has a higher success rate than other similar treatment facilities.
Meet Our Chief Medical Officer
Dr. Darrin Mangiacarne, DO, MPH, DFASAM, FAOAAM
At Banyan Treatment Centers, we are proud to have Dr. Darrin Mangiacarne leading our clinical team as Chief Medical Officer. With over a decade of experience in addiction medicine, Dr. Mangiacarne brings a wealth of expertise, compassion, and leadership to our organization.
Dr. Mangiacarne earned his Doctor of Osteopathic Medicine from the Philadelphia College of Osteopathic Medicine (PCOM) and a Master of Public Health from the University of Southern Mississippi. He completed his family medicine residency at St. Luke’s Hospital in Bethlehem, Pennsylvania, and went on to become the second addiction medicine fellow at Geisinger Health System.
Experience & Leadership in Addiction Medicine
Dr. Mangiacarne has dedicated the past 11 years to treating substance use disorders in both inpatient and outpatient settings. His leadership has extended beyond clinical care, having co-chaired the Indiana Attorney General’s Task Force on Addiction and serving as the Past-President of the Indiana Society of Addiction Medicine.
Before joining Banyan, he served as Regional Medical Director for a national treatment provider, where he oversaw medication-assisted treatment programs across the Midwest. Today, as our Chief Medical Officer, he continues to shape and strengthen our clinical practices nationwide.
What Do Addiction Treatment Doctors Do?
Addiction recovery is a complex journey, but the right support can make all the difference. At Banyan, our team of medical professionals and specialists are trained to guide patients through every stage of treatment with evidence-based care and personalized attention.
From detox to residential and outpatient treatment, our certified addiction specialists play a crucial role in helping individuals achieve long-term recovery.
Why Clinical Leadership Matters
The role of a Chief Medical Officer goes far beyond credentials. It’s about setting a standard of care that every patient can trust, no matter their background, history, or struggles.
At Banyan Treatment Centers, Dr. Darrin Mangiacarne ensures our clinical programs are not only grounded in the latest research, but also delivered with empathy and professionalism at every level. His leadership directly shapes the safety, effectiveness, and consistency of care provided across our nationwide locations.
Under his guidance, we prioritize:
- Evidence-based treatment plans tailored to individual needs
- Strict medical oversight for all detox and medication-assisted treatment (MAT) programs
- A full continuum of care nationwide
- Ongoing staff training to uphold clinical excellence and ethical standards
Your safety, dignity, and long-term recovery are our top priorities, because healing requires more than treatment. It requires trust.
Meet Our Additional Medical Directors Guiding Our Care

Dr. Patrick Jung, MD
Medical Director at Banyan Heartland and Banyan Chicago

Dr. Joseph Health
Medical Director at Banyan Texas

Dr. Jeet Joshi
Medical Director at Banyan Delaware

Dr. Brian Daly, MD
Medical Director at Clearbrook Massachusetts
Below is a list of the various types of addiction specialists and doctors that are normally on staff in a rehab facility.
An Advanced Registered Nurse Practitioner (ARNP) is a registered nurse who completed graduate-level education and has the primary responsibility of caring for the patient. The roles of licensed ARNPs include:
- Examining patients and establishing diagnoses according to client history, physical examination, and other forms of care
- Admitting, managing, and discharging patients to and from health care centers
- Ordering, collecting, performing, and interpreting diagnostic examinations
- Managing health care by identifying, developing, implementing, and evaluating a care plan for the individual
- Prescribing therapies and medical equipment for treatment
- Prescribing medications, when necessary
Substance abuse nurse practitioners offer addiction recovery medical services to treat clients in our facilities. Nurses on our staff have a combination of advanced degrees and certifications in mental health and substance abuse nursing to ensure our clients receive the best care possible.
Medical directors have years of experience managing health care facilities. Their qualifications must address the various responsibilities of the role.
Like other addiction treatment facilities, Banyan involves a hierarchy of professional addiction specialists in leadership roles. At the top of this hierarchy is the medical director (MD).
Our medical director provides oversight on all our facilities’ medical-related duties. They ensure that all medical staff members follow guidelines, protocol, and provide high-quality care to clients while ensuring their team members’ needs are being met.
Typical roles of a medical director in addiction treatment include:
- Enforcing an environment in which medical professionals can safely and effectively work
- Developing policies and protocols that match the health care institution’s guidelines to ensure client safety and treatment efficacy
- Supervising and evaluating medical staff operations
- Working with institutional leadership to meet the health care system’s goals
- Staying up-to-date on the latest medical advancements and changes through continuing education
- Managing all medical departments of their facility
- Ensuring that medical staff members meet institutional expectations, including certifications
- Recruiting and managing medical team members
Join the Banyan Team
If you're passionate about helping others overcome addiction and mental health challenges, you might be a perfect fit for our team. Learn more about career opportunities at our nationwide Banyan facilities by visiting our Addiction Recovery Jobs page.
Questions about our Facilities or Programs?
Our admissions coordinators are available 24/7 to answer any questions you may have as you consider whether treatment at Banyan is right for you or your loved one.








