Shop Featured Products (click to view) | FREE Domestic Shipping $100+

Our Team

SeeBeyond Medicine is a medical practice created by Medical Director, Dr. Joon Lee. Our practice is a combination of traditional western medicine and Functional Medicine, or what some may know as Integrative Medicine.

Hyun Joon Lee, MD

Functional Medicine, Holistic and Integrative Medicine, Obesity Medicine

Dr. Joon Lee is a double board certified Family Medicine and Integrative Medicine physician. Dr. Lee graduated from Yonsei University College of Medicine in South Korea in 1999.

She completed Family Medicine Residency and the Faculty Development Fellowship Program at Albert Einstein College of Medicine in 2005. Dr. Lee was appointed Assistant Professor at Albert Einstein College of Medicine, after attending Teachers College, Columbia University for Masters in 2006.

Dr. Lee is board-certified by the American Board of Family Medicine and the American Board of Holistic and Integrative Medicine. She is also a member of the American Academy of Family Physician and Institutes for Functional Medicine.

Dr. Lee's passion is uncovering root causes of what is making her patients sick. With extensive testing and her expertise she has guided thousands of patients to achieve optimal wellness.

Bernard Lee, MD

Pain and Palliative Medicine - Director of Medical Marijuana Program

Dr. Bernie Lee is Associate Chief Medical Officer for Metropolitan Jewish Hospice and Palliative Care, which is New York State’s largest palliative care agency; where Dr.Lee leads the daily clinical operations, ensures quality and ethical standards, maintains regulatory compliance, develops new business and strategic plans, and educates professional staff. He also provides top quality education to medical students, physicians in training, as well as attending physicians and other health care professionals as an Assistant Clinical Professor at the Albert Einstein College of Medicine....

Dr. Lee is double board certified in Family Medicine, as well as, Hospice and Palliative Medicine. As a West Point Academy graduate, he serviced in the US Army as an active duty armor officer. He then completed a post-baccalaureate pre-medical program at New York University, and earned his medical degree from Stony Brook School of Medicine.

Dr. Lee is a strong physician advocate of medical cannabis and is leading the charge to educate physicians on its safe and effective use in order help alleviate the suffering of patients with chronic and terminal illness. As a believer in the benefits of Integrative Medicine, he is also a New York State Certified Medical Acupuncturist.

Dr. Bernie Lee talked about Medical Marijuana on Cannabis Internet Radio Show called “In the Know 420” on January 27, 2017. Click here to listen and find out more about Medical Marijuana.

‍Click here to learn more about See Beyond Medicine’s Medical Marijuana Program.

Please call our office at (914) 722-9440 to set up an appointment or click here to register as a new patient!

Stephen Dahmer, MD

Holistic Primary Care

Dr. Stephen M. Dahmer is a board-certified family physician whose passion for health and healing has taken him around the globe. His medical experience has included work with the Maori in New Zealand, Umbanda faith healers in Brazil, traditional healers in Palau, war veterans at the San Diego Veterans Hospital, and the Navajo (Dine) in the Four Corners region of the United States. His travels have further reinforced his beliefs that medicine is a method not only for eliminating symptoms but also for achieving increasingly higher states of health for the unique, whole individual...

Dr. Dahmer is a graduate of the University of Wisconsin-Madison medical school and completed his residency training at Beth Israel Residency in Urban Family Medicine in New York City. He was one of the earliest graduates of the Integrative Family Medicine Fellowship with Dr. Andrew Weil. His postgraduate training has included work as a Fountainhead Scholar with The Institute for Functional Medicine, ethnomedicinal research with The New York Botanical Garden, and homeopathic training with the Center for Education and Development of Clinical Homeopathy. Dr. Dahmer has special interests in nutrition, mind-body therapies, botanical therapies, nutraceuticals and indigenous healing systems. Dr. Dahmer is Assistant Clinical Professor of Family Medicine and Community Health at the Icahn School of Medicine at Mount Sinai and his clinical focus includes family medicine, preventive medicine, stress reduction, travel medicine, and men’s health.

Dayna Arena, RN

Director of Wellness

Dayna holds a bachelor’s degree in Nursing from New York University and is a licensed Registered Nurse in New York State. Dayna is also an Exercise Physiologist with a bachelor’s degree in Exercise Science from Manhattan College...

Dayna has over 10 years of medical experience and is a pioneer in the field of Functional Medicine in both experience and knowledge. Dayna has been integral in the successful launch of two Functional Medicine businesses and continues to master and study at the Institute of Functional Medicine. She advocates a holistic approach to health that focuses on the whole person and the root causes of disease.

“My main goal is to treat patients in the most natural way, using real food, lifestyle modifications, supplements, and nutritional IV Therapy that give their body the nutrients it needs to heal itself. I focus on balancing patients’ bodies to lower inflammation, let go of excess fat, water, and toxins they may be holding onto, and provide them with anything they need for optimal health.

It is so rewarding to watch the amazing transformations in my patients. Most importantly, my patients are left with an education for a lifetime and feel empowered to maintain their new health because they understand what their bodies’ needs are and why.”

Dayna practices what she preaches. She believes, as Hippocrates once said, “Let thy food be thy medicine and medicine be thy food.” In her spare time, you can find Dayna on a yoga mat, trying out new healthy recipes, traveling, and spending time with her family.

(914) 722-9440 to set up an appointment or click here to register as a new patient!

Chelsea Wiley, NP

Nurse Practitioner

She holds an undergraduate degree in Psychology and is a registered nurse who went on to receive a Master’s Degree and become a Board-Certified Family Nurse Practitioner. She has worked as Nurse Practitioner in the New York area and is now transferring to our team. In the past, Chelsea was a labor and delivery nurse at the University of California, San Francisco. She also studied with Ina May Gaskin, the most famous midwife in the world....

She is able to offer guidance rooted in Western medicine and connected to Eastern spiritual and wellness. She has published three books, under the pen name Pritam Atma, focused on combining Western medicine and ancient spiritual technologies: her books enable women create a deeper connection with themselves and as a result raise incredible children.

From meditation and spirituality to making healthy lifestyle choices and healing - you will be guided step-by-step on how to live a more rounded life. Inspired by consciousness shifting traditions, and her background fertility, birth and medicine, Chelsea will take you by the hand as you embark on your transformational journey at See Beyond. She focuses on women’s health, reproductive health and can guide menopausal women with hormone replacement therapy

She will be offering Kundalini Yoga and Meditation classes at our center moving forward. Chelsea has studied yoga, meditation and energetic healing techniques for over a decade. She is happy to teach you mantras, mudras (hand and finger movements) and meditations that will not only uplift you emotionally and create clarity, but also manifest great abundance in your life. These can be as simple as 3 to 11 minutes a day and help you make dramatic changes in your life relatively quickly. Reach out to us with any questions.

Chelsea is available for appointments upon request as well as Precepting with Dr Lee for our Members as well.

(914) 722-9440 to set up an appointment or click here to register as a new patient!

Randi Cestaro

Director of Nutrition

Randi is our Integrative Health Coach. She has been certified as a Holistic Health Coach by the Institute for Integrative Nutrition, and is a certified yoga teacher. Randi also holds a Bachelor of Arts degree from Johnson & Wales University...

Randi’s journey began when she was diagnosed with Polycystic Ovarian Syndrome (“PCOS”) in her twenties. Her periods had vanished, she had enlarged ovaries, was tired all the time, gained weight, had painful cysts on her ovaries and breasts.

By embracing and personally practicing what she was learning in her studies to become a holistic health coach, Randi drastically changed her diet and lifestyle, and within six (6) months her PCOS symptoms went into remission. Her menses cycle returned to normal, the pain subsided and her mood stabilized. To her great surprise, Randi’s physician confirmed that her ovarian cysts had disappeared and her ovaries had returned to normal size.

Randi is self-motivated, confident, and a nurturing coach with a proven track record of helping clients mitigate their symptoms through effective nutritional practices. She has over fifteen (15) years of experience in providing nutritional guidance to patients with PCOS, diabetes, infertility, hormone imbalances, irritable bowel syndrome and weight loss issues. Randi has the innate ability to distill complex nutritional data into accessible information that her clients can understand.

She has given talks on various nutritional topics at the United Nations, Asphalt Green, and at the Montefiore Institute.

See Beyond™ Medicine is proud to have Randi as our Integrative Health Coach. Come see for yourself how caring and understanding she is about your health goals. We all look forward to meeting you.

(914) 722-9440 to set up an appointment or click here to register as a new patient!


Front Desk Coordinator

Meet Stephanie our Front Desk Coordinator! She just recently joined us but has blended so well into the team, it’s like she's always been here. She comes with experience in the pharmaceutical world and brings a vast amount of knowledge. She has a calm and pleasant personality that people enjoy greeting when they walk into our location. Come by our office to meet her and all of us!Meet Stephanie our Front Desk Coordinator! She just recently joined us but has blended so well into the team, it’s like she's always been here 🥰. She comes with experience in the pharmaceutical world and brings a vast amount of knowledge. She has a calm and pleasant personality that people enjoy greeting when they walk into our location. Come by our office to meet her and all of us!


Membership and Patient Coordinatorr

Kate, our amazing membership, and patient coordinator takes customer service to the next level. She sees you as a person and will take the time to get the best plan and treatment set up for your needs. We are thankful and blessed to have her as part of our crew and hope that she continues to grow and flourish with us!


Lab Tech

Kauri is our newest lab tech. She gives her all with everyone she works with and for all the patients she treats! She's a team player and we commend her for all her hard work!



Meri is our amazing & most dedicated nurse who always goes above and beyond! She truly cares about each and every patient that walks through our doors. Patients love her, we love her and she fills our office love and kindness.

You do not have to suffer any longer or rely on medicine for all of the answers! Get REAL answers and FEEL BETTER!

Need to Schedule a Virtual Meeting? Contact us Today!

We are offering 30 minutes for free to talk to one of SeeBeyond's Functional Medicine Practitioners to create a personalized regimen.

Fill out the form below to schedule your consultation.

Request Consultation - Consultation Popup