Dr. Suchdev, Dr. Mirazita and Dr. Yadati have once again been recognized by their peers as Top Doctors in New Hampshire Magazine’s annual Top Docs issue for 2025. This honor is recognition of their unwavering commitment to high-quality care, their expertise and skill in their respective fields, and the compassionate approach they offer patients at Oasis Therapeutics.
Psychiatry
Psychiatric Mental Health Nurse Practitioner
Psychiatric Mental Health Nurse Practitioner
Nurse Practitioner
Nurse Practitioner
Executive Vice President
Neurotherapies Program Coordinator
Director of Billing and Administration
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Dr. Praveen “PK” Suchdev, MD, DABA, DABAPM, is the founder and CEO of Oasis Therapeutics and a key pain management physician at Pain Solutions, serving Nashua, and Concord, New Hampshire. He began his medical career at Northwestern University Medical School, completed an internal medicine internship at Northwestern, and specialized in anesthesiology and pain management during his residency at the University of Pennsylvania. Dr. Suchdev completed his Pain Management fellowship at Harvard University, Beth Israel Deaconess Medical Center in Boston Massachusetts.
Dr. Suchdev served in the Air Force, where he directed the Chronic Pain Management Program at Wilford Hall Medical Center, the largest military pain referral center within the Uniformed Services at that time. For his outstanding work in developing patient care protocols, he was awarded the Meritorious Service Medal, setting new standards for efficiency and quality of care in military pain management services. He was also awarded the Meritorious Achievement Medal for saving the life of a toddler while on an overseas mission.
In 2001, Dr. Suchdev founded Pain Solutions, PLLC, aiming to create a network of integrated pain management clinics throughout New Hampshire. Recognizing the need for effective mental health services for treatment resistant mood and pain disorders in his patient population, Dr. Suchdev and his team created Oasis Therapeutics. He is board-certified in Anesthesiology and Pain management and is a member of the American Society of Interventional Pain Physicians, the American Society of Ketamine Physicians, Psychotherapists, and Practitioners, and the Clinical Transcranial Magnetic Stimulation Society. Dr. Suchdev served as Chairman of the Board of Trustees of Southern New Hampshire Health and Vice-Chairman of the Board of Trustees of Solution Health. Dr. Suchdev has been recognized as a “Top Doc” by New Hampshire Magazine every year since 2014.
James A. Mirazita, MD, DABA, ABIPP is a distinguished pain management and interventional psychiatry physician at Oasis Therapeutics, with locations in Nashua and Concord, New Hampshire. Dedicated to advancing patient care, Dr. Mirazita employs cutting-edge techniques to help individuals overcome chronic pain and mental health challenges, guiding them toward a life of renewed well-being.
Dr. Mirazita earned his medical degree from The Ohio State University College of Medicine through the U.S. Air Force Health Professions Scholarship Program. He completed his general surgery internship at David Grant U.S. Air Force Medical Center in California, followed by an anesthesiology residency with a concentration in pain management at Wilford Hall U.S. Air Force Medical Center in Texas. Further honing his expertise, he completed a pain management fellowship at Harvard Medical School’s Beth Israel Deaconess Medical Center and received specialized training in medical acupuncture for physicians at Harvard Medical School.
Following his residency, Dr. Mirazita served as a staff anesthesiologist at Langley Air Force Base in Virginia, where he assumed the role of medical director of anesthesia services and established the hospital’s first pain management clinic.
In 2015, Dr. Mirazita co-founded Oasis Therapeutics with his long-time colleague, Dr. Praveen Suchdev, aiming to improve the lives of patients suffering from treatment-resistant conditions. He has been instrumental in the clinical development of the practice and currently serves as its Medical Director.
Dr. Mirazita is board-certified in anesthesiology and pain management by the American Board of Anesthesiology and the American Board of Interventional Pain Physicians, where he has served as a board examiner. He is an active member of the American Society of Interventional Pain Physicians, the American Society of Ketamine Physicians, Psychotherapists, and Practitioners, and the Clinical Transcranial Magnetic Stimulation Society. His commitment to clinical excellence has been recognized with numerous accolades, including most recently being named a New Hampshire Magazine “Top Doc” and a Castle Connolly Top Doctor in 2024.
Dr. Santharam Yadati, with a robust educational foundation, has dedicated over 45 years to shaping the field of mental health as a Board-certified psychiatrist. His journey began with rigorous clinical training, laying the groundwork for his lifelong commitment to psychiatry. This foundation was further strengthened by his brief tenure as an instructor at Harvard University, where he had the privilege of engaging with some of the brightest minds in the field. Although his time there was brief, it profoundly influenced his approach to psychiatry, deepening his understanding of mental health and inspiring a commitment to continuous learning and innovation.
Dr. Yadati has played a pivotal role, at Oasis Therapeutics, in advancing cutting-edge treatments for therapy and medication-resistant mood and pain disorders. At Oasis, he has been at the forefront of implementing innovative modalities such as Transcranial Magnetic Stimulation (TMS), Ketamine Infusion Therapy, and Stellate Ganglion Block treatments. His work is driven by a passion for offering patients the most effective, evidence-based care available, enabling him to help countless individuals achieve rapid relief from conditions that have otherwise been resistant to conventional treatments.
In addition to his clinical endeavors, Dr. Yadati’s time at Oasis Therapeutics has involved significant contributions to leadership and consultation. He has worked closely with a dedicated team to shape treatment protocols, ensuring that the approach remains at the cutting edge of psychiatric care. This leadership role has not only enhanced the quality of care provided but also positioned Oasis Therapeutics as a leader in the treatment of complex mental health conditions.
Throughout his career, both in clinical practice settings and at Oasis Therapeutics, Dr. Yadati’sfocus has remained steadfast on delivering comprehensive care that addresses the mind, body, and spirit. This holistic approach is further enriched by his certification in Integrative Medicine from NIMHANS, Bangalore, which allows him to offer a more rounded and personalized treatment experience. His ongoing dedication to professional growth and integrative care continues to drive his efforts to make a meaningful and lasting impact in the field of psychiatry.
Megan Ricard, MSN, APRN, FNP-C, PMHNP, PMGT-BC, is a highly qualified Advanced Practice Registered Nurse with specialized expertise in pain management and psychiatric mental health. With an academic background and a deep commitment to patient care, Megan stands out as a leader in her field.
Megan’s educational journey is distinguished by a series of advanced degrees and certifications that have equipped her to manage complex medical and mental health conditions. She earned her Master of Science in Nursing from Simmons University, where she developed a strong foundation in family practice. Recognizing the intricate connection between chronic pain and mental health, Megan pursued further specialization as a Psychiatric Mental Health Nurse Practitioner (PMHNP) at Wilkes University. Additionally, she holds a certification in Pain Management from the American Nurses Credentialing Center (ANCC), reflecting her comprehensive expertise in this critical area.
At Oasis Therapeutics, Megan plays a pivotal role in delivering cutting-edge treatments for chronic mental health disorders. She is certified in Ketamine Infusion Therapy and Transcranial Magnetic Stimulation (TMS), both of which are integral to the advanced care provided at Oasis Therapeutics. Megan’s work involves addressing the complex interplay between chronic pain and mental health, offering holistic and innovative solutions that significantly improve patient outcomes.
Megan Ricard’s professional mission is to provide the highest quality of care, grounded in compassion and excellence. Her work at Oasis Therapeutics exemplifies her ability to integrate her advanced education and specialized skills to offer comprehensive care that addresses both the physical and psychological needs of her patients.
Jill Jefferson, MSN, APRN, PMHNP-BC, is a Psychiatric Mental Health Nurse Practitioner with a strong foundation in nursing, behavioral health, and holistic wellness. She earned her Master of Science in Nursing as a Psychiatric Mental Health Nurse Practitioner from Simmons University and completed advanced psychiatric clinical training through Dartmouth Hitchcock, gaining experience across a broad range of patient populations and care settings. Prior to becoming a nurse practitioner, Jill spent more than a decade as a registered nurse, primarily in procedural and perioperative care.
Jill brings a holistic, patient-centered perspective to psychiatric care. She is also trained in integrative nurse coaching and holistic nursing and has experience in wellness and lifestyle coaching. At Oasis Therapeutics, Jill is committed to developing collaborative relationships with patients and supporting individualized approaches to mental health and overall well-being.
Tara Heinrich received her first Bachelor’s degree in Natural Science with an emphasis in Geology at the University of Puget Sound. After working in the field for several years, she realized her passion was caring for people. She graduated from Virginia Commonwealth University with an accelerated Bachelor’s degree in Nursing in 2006 and dedicated the next 18 years to gaining critical care and perioperative nursing experience. With a firm belief in the power of continuing education, Tara received a Master’s degree in the Family Nurse Practitioner program at Rivier University in 2023.
Tara joined Oasis Therapeutics in 2024 and looks forward to forming healing relationships and creating a collaborative environment. Providing compassionate, patient-centered care, Tara draws on years of nursing experience to ensure the best outcome with individualized treatment plans. She encourages her patients to empower themselves through education.
Tara has a significant professional interest in providing progressive treatment therapies.
Matthew Ebbighausen, FNP-C is a board-certified Family Nurse Practitioner specializing in interventional pain management and musculoskeletal conditions. He earned his Master of Science in Nursing, Family Nurse Practitioner, from Carson-Newman University.
Matthew has experience evaluating and treating chronic pain, arthritis, and sports-related injuries, and is skilled in performing image-guided joint and trigger point injections. He works collaboratively with the Pain Solutions team to develop individualized treatment plans focused on improving function, reducing pain, and enhancing quality of life.
Matthew is committed to providing compassionate, patient-centered care and helping patients return to the activities most important to them.
