Baltimore Ketamine Providers

Meet our Providers

We are a team of caring professionals who provide personalized and comprehensive care, with the main goal of improving your quality of life
Ivana m

Ivana Mitic, MSN, CRNA, PMHNP, HYL Coach, Founder

Ivana Mitic, MSN, CRNA, received a master of science in anesthesiology from the University of Maryland, Baltimore in 2012. Ivana is board certified by the National Board of Certification and Recertification for Nurse Anesthetists and a member of the American Association of Nurse Anesthetists.

Over the years, Ivana gained extensive knowledge and experience with ketamine administration. Her vision is to provide the healing properties of Ketamine infusion therapy to people who suffer from depression and chronic pain disorders in a welcoming and relaxing environment. While caring for people who benefit from Ketamine treatment for both depression and chronic pain, Ivana realized that additional services may benefit both groups of individuals: “scrambler” therapy for neuropathic pain conditions and HYL workshops for all who wish to better their lives.

Ivana has been developing a non-profit organization, Amethyst Azul, with a mission to help those who may need financial assistance to cover their treatment at Baltimore Ketamine Clinic.

Dr. Margaret Rajnic DNP, FNP-C, Medical Director

Dr. Margaret Rajnic is a board-certified Doctor of Nursing Practice (DNP). She obtained a doctorate degree from Case Western Reserve University in 2015. Dr. Rajnic earned a master of science in nursing in 1998 and a bachelor of science in nursing in 1990, both from Thomas Jefferson University.

For over 20 years, Dr. Rajnic has served in both the private and public sectors of healthcare leadership.  In addition, Dr. Rajnic has 15 years of experience in behavioral health and extensive experience providing healthcare for acute, emergency, and trauma services.

Her approach with every patient is holistic and supportive.

Dr. Rajnic is a proud member of the American Association of Critical Care, the American Academy of Nurse Practitioners, the Patient Advocate Council, the Trauma Society, and the State Nurses’ Association.

Margaret r
Jennifer c

Jennifer Christensen MS, CRNP, CRNA

Jennifer Christensen MS, CRNP, CRNA received a Bachelor of Science in Nursing from Salisbury University in 2002 and a Master of Science from the University of Maryland in the Acute Care and Clinical Nurse Specialist program in 2007.

Jennifer practiced as an Advanced Care Nurse Practitioner at the University of Maryland Medical Center and Johns Hopkins University. Jennifer obtained a Post Master’s Certificate in Nurse Anesthesia from Villanova University in 2014. Jennifer has over 18 years of medical experience. She practiced in multiple Intensive Care Units for over a decade. Most recently she has been working in the Baltimore region as a CRNA providing anesthesia in office settings, outpatient surgery centers, and at hospital facilities.

Jen is very passionate about caring for the whole patient: mind, body, and spirit. Jen enjoys playing with her children, hiking, traveling, and gardening.

Marilyn Clark, LCPC, NCC, FAMI

Marilyn is a Licensed Clinical Professional Counselor and practices Imagination Response Therapies (including The Bonny Method of Guided Imagery & Music, Hypnotherapy, and Guided Visualization). She has helped to guide research volunteers at Johns Hopkins during their psilocybin sessions.

Staying open to curiosity, wonder, and spirit-filled awe, Marilyn has “followed her bliss” in pursuit of deepening into authenticity for herself and others. For more information about Marilyn please visit

Marylin is avaliable for Ketamine Assisted Psychotherapy and a group therapy for our patients!

Marilyn c
Benjamin l

Benjamin Leo, BS, NRP, FP-C, CCEMT-P

Ben is a paramedic, student, farmer, and father. Ben currently serves roles both in neonatal/pediatric critical care medicine and prehospital 911 services. He has over 9 years of experience in emergency, critical care, and military medicine.

In addition to his work as a paramedic, Ben spent time in a biotechnology firm and university research laboratory. His education includes a BS in Microbiology/Human Resources from the University of Maryland and countless hours of certification/professional training to ensure he stays on the edge of evidence-based practice.

Ben is passionate about mental health and believes it is our nation’s most under-spoken crisis. He believes that every person deserves to be the best version of themselves through a holistic, individualized, and value-based care model.

His current research interests include the management of mood disorders and PTSD via the use of Ketamine, non-opioid multimodal approaches to pain management, and rethinking America’s approach to chronic care. Ben is also a proud nursing student whose ultimate goal is to become a Mental Health and Family Nurse Practitioner in a rural setting.

Merry Fleishman

Often the first to help inquirers and welcome patients to Baltimore Ketamine Clinic, Merry has been an integral part of our practice since June of 2020. A native of Baltimore, Merry initially enjoyed a long career in client relations for national and major accounts of Automatic Data Processing’s business services division before assuming a lead role in training its Chesapeake Region associates. Volunteering as an EMT/IVT & firefighter/rescue technician in Baltimore County as well as a therapeutic mentor at Villa Maria’s psychiatric residential treatment facility, created an outlet for Merry’s desire to help those during their time of critical need. A mid-life career change led Merry to become an addictions counselor at a Methadone treatment facility.

This experience provided Merry the opportunity to learn from dual diagnosis patients and use eclectic methods to inspire and guide those juggling past trauma and major life challenges while they participated in treatment for recovery from chemical dependency. A graduate of Medix, she went on to broaden her abilities and knowledge in healthcare by closely assisting physicians and medical directors at St. Joseph Medical Center, Northwest Hospital, and specialty medical practices, including Actify Neurotherapies, which was the Mid-Atlantic’s first and nation’s largest provider of IV Ketamine infusion therapy. We are very fortunate to have Merry on our team!

Merry f
Michelle r

Michelle Ridgeway, MSN, PMHNP

Michelle Ridgeway is a psychiatric mental health nurse practitioner. She received a Master of Science in psychiatry from Wilkes University in 2018. Michelle is board certified by the American Nurse Credentialing Center. Prior to becoming a nurse practitioner, Michelle worked as a registered nurse on an inpatient mental health unit for eight years. She was also an adjunct professor at York College, working with the nursing students during their psychiatric rotation. Michelle has over 18 years of nursing experience.

Michelle is vehement about educating the community, clients, and client’s family members about mental health, as well as providing comprehensive and holistic care. Her specialty is working with clients who suffer from depression, anxiety, bipolar disorders, substance use disorders, and schizoaffective disorder. In her free time, Michelle enjoys nature, family time, and cooking.

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