About Diana Tumminia

I am a Licensed Clinical Social Worker with “R” psychotherapy privilege – a mental health practitioner licensed to diagnose and treat psychiatric disorders as well as to receive insurance reimbursement for psychotherapeutic interventions in a private practice setting.

I received my Bachelor’s degree in Psychology at Hunter College in New York City in January 2001 and a Master’s in Clinical Social Work at Hunter College School of Social Work in May 2003 with a concentration in clinical work with individuals or families. I also hold a post-graduate certification in Advanced Cognitive Behavioral Therapy from New York University and utilize CBT interventions for a variety of clinical issues. During my practicum, I worked with a number of diverse populations. I offered counseling services to freshmen students, coordinated and directed interventions to autistic children and adults with developmental disabilities, and provided mental health and case management services to refugees and veterans.

From 2003 to 2019, I was employed as a mental health practitioner at the US Department of Veterans Affairs. I was providing various mental health, counseling, and case management services in different healthcare settings through the VA, including outpatient primary and specialty clinic care, inpatient medical care, oncology and palliative care, and in the homeless/home-loss prevention program. I organized and participated in a number of educational activities related to mental health, caregiver support, palliative care, and cancer prevention and served as a liaison between the VA setting and multiple government and community resources.
I also provided psychotherapy and mental health case management services in the community, serving a population of elderly and homebound families. I served as a volunteer bereavement specialist for VNS Hospice Service offering initial consultation and referrals for further services to newly bereaved families. I brought my knowledge and expertise in health psychology and grief and loss counseling to offer the best care to individuals and families needing support at a crucial time.


I have been in private practice since 2010, integrating my rich professional and educational experience to offer various psychotherapeutic and psychoeducational interventions to my clients. My goal is to establish a collaborative relationship with the client directed toward their wholeness and personal growth and transformation. I strive to move away from the stigma and labeling that traditional abnormal psychology offers and instead focus on my clients’ strengths and mutually developed goals to help them reach their best potential.

As a practitioner with a long experience in healthcare, in addition to working with common issues of depression, anxiety, self-esteem, or relationship problems, I provide health related mental health services: psychotherapeutic interventions offered to individuals dealing with chronic illness and pain, undergoing cancer treatments, or facing any terminal diagnosis. I offer caregiver or grief and loss support counseling to affected family members. I also offer services for perinatal mood and anxiety disorders and maternal mental health, including complicated pregnancies, working with women at various stages of family planning and postnatal period, as well as pregnancy or infant loss and bereavement.

My approach to therapy is eclectic where I work on implementing a very individualized treatment plan geared to address specific issues of each client. I tend to combine insight-oriented/psychodynamic, cognitive-behavioral, Jungian/archetypal, psychosomatic, and mindfulness-based interventions during my sessions with clients and provide ample time for relevant psycho-educational activities.

I received certification in MARI assessment in 2010 and integrate my unique specialty as a Certified MARI (Mandala Assessment Research Instrument) Practitioner to offer a comprehensive psychological assessment both as a part of my standard evaluation for new psychotherapy clients and as a stand-alone service for clients seeking guidance for a particular issue or a general direction toward a personal transformation.

For clients wishing to work on specific non-clinical issues, I offer Personal Development sessions conducted remotely over the phone or teleconference. It is a convenient way to tap into your challenges and blocks and to turn them into breakthrough conditions in order to see the desired outcome in an area of life where you want to reach your highest potential.

Professional advancement is always a part of my agenda. I regularly attend various professional seminars and continuing education workshops related to psychodynamic, cognitive-behavioral, or family therapy current theories and interventions at a number of known mental health schools or professional organizations.

I speak fluent Russian and conversational Ukrainian, and both Psychotherapy and Personal Development services are available in either English or Russian, however, a basic knowledge of English is required for the MARI service.

Body-mind-spirit integration is not just the core of my therapeutic interventions but also a foundation of my personal approach to life. I have a strong interest in alternative medicine, healthy eating, and lifestyle and enjoy the many cultural activities and dining spots that New York City has to offer.

To read more about each service I provide, please visit their corresponding pages Psychotherapy, MARI Services, Personal Development. If you have any questions about the services, please feel free to use my contact form.



“Diana Tumminia has been a steadfast supporter of my healing process. As a therapist she has done so much to improve my holistic well-being, with our sessions supporting growth and healing in my personal life, with my family, and in my career. Through the work we do together I have made significant progress to overcome a history of anxiety, trauma, and a persistent fear of flying. I went from avoiding air travel at all costs to having the tools to fly halfway around the world. With her guidance, I have been able to unlock a love of travel and my world has expanded. Together we are working to dismantle my limitations, unravel my negative inner voices, and debunk black and white thinking to have a healthier and more sustainable way for me to navigate the world. As an artist, I have appreciated working with a therapist who understands the creative process and values creativity as a tool for personal growth. As a multi-faceted therapist, Ms Tumminia is able to pull from a wide range of skillsets, bringing approaches into play that align with what I am going through. I have appreciated having a skilled therapist who has expansive knowledge of the field of counseling.”
~ C. D. , New York

“ I’ve been working with Diana since 2019 and have grown immensely as a result of our sessions together. I have learned new coping skills, made notable strides in managing my anxiety, and feel stronger and more confident with every session. Diana has not only helped me to evaluate my own experiences but she’s helped to provide useful, actionable, systems that have made real and positive changes in my life.”
~ C. L., New York

“Diana was consistently very kind and cooperative as I worked with her, which was very helpful for my first experience with therapy. Every session I felt like all of our discussion was productive and her insights directly helped me develop a more positive relationship with my workload as a student. Her recommendations helped me to reflect on my mindset through our conversations and thought activities, and she also suggested plenty specific, realistic actions to translate this mindset into my daily life. I’m very grateful for all of her help!”
~ L. K., New York

”In the 7 months that I worked with Diana, my quality of life has drastically improved. Her wisdom is abundant and practical. With her guidance I have been able to mend relationships with family members and improve relationships with my loved ones. After working with Diana, mental health has improved to where I feel stronger, more self assured and set to continue making decisions that are in my best interest. In moving forward, I feel confident that I will continue to succeed in my relationships and achieve my goals.”
~~ C. L., New York

“I have been seeing Diana for over 2 years, and her services have been invaluable to me. She has a wealth of experience, and provided perspectives and guidance for my family realtionships, career, and tramautic experiences. When sharing with Diana, I truly feel understood by her. She provides realistic and actionable guidance that is transferable to many areas in my life. I’m able to navigate challenging experiences using the techniques I learned from her. Working with her helped me through extremely difficult periods of my life including illness and death of a parent.”
~~ J. W., New York

“Diana’s services are truly life-changing. I had many lingering childhood -stemming issues, which we unfolded together. Diana has a gift of feeling through one’s emotional trauma and leading the process of self-realization in a non-judgmental, heartfelt way. From my experience, her high professionalism, as well as her amazing human qualities, compete for the breakthrough experience for the struggling clients. I also have to mention the beauty of MARI sessions. I think that MARI helped me to look deeper in my subconscious, revealing hidden issues through my choices of shapes and colors, creating a way to achieve my personal masterpeace of a better life.”
~~ V. K., New York

Personal Development

“Diana is a warm and caring professional. I feel heard and understood by her. I sense her compassion, which is healing in and of itself. Her suggestions and counsel are well-balanced, wise, and supportive. I feel better overall after talking with her. I would highly recommend to anyone seeking help to go with Diana. Working with her has been so highly beneficial for me.”
~~S.K., Virginia


“MARI service was a unique and eye-opening experience that had revealed many hidden issues but also highlighted my strong areas to rely on in life. I truly appreciated Diana taking the time to explain the whole process and guiding me through the test and discussion afterward. I enjoyed the creative approach in implementing MARI and overall suggestions how to improve my life. I’d recommend everyone to try this comprehensive test to connect to their inner world and receive a new direction in life.”
~~ T.S., Connecticut