The Medical Opinion Marketplace

John Frank Warren, PhD, is a licensed psychologist who provides specialized psychological assessment services with an emphasis on complex clinical and forensic evaluation. He is board certified by the American Board of Professional Psychology in Forensic Psychology and in Police & Public Safety Psychology, reflecting advanced expertise in high-stakes, evidence-informed assessment and consultation. Dr. Warren’s work has included comprehensive evaluations used in a range of medico-legal and administrative contexts. His professional interests encompass complex psychological and medical psychology evaluations, neuropsychological screening, and assessment questions that arise in employment, civil, and criminal matters. He is associated with Complex Psychological Evaluations (CPE) / John F. Warren & Associates (d/b/a CPE), where the practice focus includes detailed, objective assessments designed to clarify diagnostic, functional, and risk-related questions. Dr. Warren provides services in English and is listed as retired. Throughout his career, he has been recognized for bringing careful clinical reasoning, structured methodology, and clear communication to evaluations that require a high level of professional rigor.

David R O’Brien Jr., MD, is a pain medicine physician specializing in Physical Medicine and Rehabilitation. He is board certified by the American Board of Physical Medicine and Rehabilitation in both Physical Medicine & Rehabilitation and Pain Medicine. Dr. O’Brien provides non-operative evaluation and treatment for back, neck, and joint conditions, with a focus on spine and sports-related injuries. His clinical interests include disc herniations, sciatica, arm and leg pain, and other causes of numbness, weakness, and pain involving the spine and extremities. He offers minimally invasive, image-guided procedures, therapeutic injections, and diagnostic testing to help clarify the source of symptoms and guide individualized treatment plans. In addition to his clinical practice, Dr. O’Brien serves as an Associate Professor at Wake Forest University School of Medicine in the Department of Orthopaedics and Rehabilitation and in the Department of Neurosurgery. He holds leadership roles as Chief of Medical Spine and Fellowship Director for Interventional Spine and Musculoskeletal Medicine and serves on spine center of excellence executive and steering committees. He contributes to the field through professional society and editorial work, including service on the Board of Directors for the North American Spine Society and editorial boards for The Spine Journal and Interventional Pain Medicine. His research focuses on spine and back pain.

Pavel J. Levy, MD, MBA, FACA, FAHA, is an internal medicine physician specializing in vascular medicine at Atrium Health Wake Forest Baptist. He cares for adults with complex vascular and circulatory conditions, with a particular emphasis on peripheral (non-cardiac) vascular disease. His clinical background spans general surgery and vascular medicine, supporting a comprehensive approach to diagnosing and treating challenging vascular disorders. Dr. Levy received his medical degree from Hebrew University Hadassah Medical School and completed postgraduate training in general surgery at Hadassah University Hospital. He pursued advanced fellowship training in vascular medicine at Cleveland Clinic. In addition to his clinical work, Dr. Levy serves as a Professor in Vascular Medicine within the Department of Vascular and Endovascular Surgery at Wake Forest University School of Medicine. His research interests include mesenteric ischemia, premature atherosclerosis, hypercoagulable states and arterial thrombosis, antiphospholipid antibodies in vascular disease, and vascular risk factors in younger adults. He is affiliated with the Cardiovascular Sciences Center and the Hypertension and Vascular Research Center. Dr. Levy is a member of multiple professional societies, including the Society for Vascular Medicine and the American Heart Association. He speaks English, Hebrew, Lithuanian, and Russian.

Christopher J. Tuohy, MD, is an orthopaedic surgery physician with an upper-extremity practice emphasis, caring for patients with conditions affecting the shoulder, elbow, and hand. He is board certified in orthopaedic surgery and is a Diplomate of the American Board of Orthopaedic Surgery. Dr. Tuohy also holds a subspecialty certificate in Surgery of the Hand, reflecting advanced training and expertise in complex problems of the hand and upper limb. His clinical focus includes the evaluation and treatment of shoulder arthritis and rotator cuff tears, nerve injuries and compressions, and fractures and dislocations involving the shoulder, elbow, and hand. He provides both nonoperative and surgical care tailored to each patient’s goals, with an emphasis on restoring function, reducing pain, and supporting safe return to work, sports, and daily activities. Dr. Tuohy is affiliated with the Wake Forest University School of Medicine Department of Orthopaedic Surgery and contributes to the academic mission through scholarly activity, including peer-reviewed publications. He is committed to evidence-based care, clear communication, and collaborative decision-making throughout the course of treatment.

Zhongyu J. Li, MD, PhD, is a board-certified orthopaedic surgeon at Atrium Health Wake Forest Baptist in Winston-Salem, North Carolina. He is a Professor in the Department of Orthopaedic Surgery and Rehabilitation at Wake Forest School of Medicine and serves as Program Director for the Hand Fellowship. Dr. Li’s clinical expertise includes hand and microsurgery, with particular focus on peripheral nerve repair. In addition to his clinical work, Dr. Li is engaged in translational research aimed at improving outcomes in nerve regeneration and advancing microsurgical techniques. His investigative efforts have included serving as a principal investigator on Department of Defense–funded research related to peripheral nerve repair and regeneration. Dr. Li completed orthopaedic surgery residency training at Wake Forest University School of Medicine and also trained in general surgery at University Hospital at the SUNY Health Science Center at Stony Brook. He is a member of the American Academy of Orthopaedic Surgeons and the North Carolina Medical Society. Through his patient care, teaching, and research, Dr. Li is committed to improving function and quality of life for individuals with complex hand and nerve conditions.

Tadhg J. O’Gara, MD, is an orthopaedic spine surgeon with Atrium Health Wake Forest Baptist, specializing in the evaluation and surgical management of disorders of the cervical, thoracic, and lumbar spine. His clinical focus includes treating degenerative spine conditions and addressing nerve compression and related sources of back and neck pain, with an emphasis on evidence-based decision-making and patient-centered care. Dr. O’Gara serves as an Associate Professor at Wake Forest School of Medicine and is part of the Atrium Health Wake Forest Baptist Spine Center, a multidisciplinary program that coordinates comprehensive spine care across specialties. He has authored and co-authored peer-reviewed research in leading spine and orthopaedics journals, including outcomes-focused studies on procedures such as lumbar microdecompression, reflecting a commitment to continuous improvement in surgical technique and patient outcomes. Following residency training, Dr. O’Gara completed advanced fellowship training in spine surgery at New England Baptist Hospital in Boston. He is licensed to practice medicine in North Carolina.

Jeffrey B. Feldman, PhD, is a clinical psychologist specializing in neuropsychology within Atrium Health Wake Forest Baptist. His clinical interests include behavioral health and psychology, with additional focus in neuropsychology and neurology, as well as integrative medicine and headache-related concerns. Dr. Feldman brings a health-psychology perspective to patient care, emphasizing evidence-based strategies that support coping, functioning, and overall quality of life in the context of complex medical or neurologic conditions. Dr. Feldman serves as an Associate Professor of Neuropsychology in the Department of Neurology at Wake Forest University School of Medicine. His academic and scholarly work centers on health psychology, pain management, and rehabilitation, and he has contributed to the clinical literature on hypnosis and pain management. He earned his undergraduate degree from Rutgers University and completed graduate training at Case Western Reserve University, where he received both his master’s degree and PhD. Dr. Feldman provides care in English and is committed to integrating psychological science with medical care to help patients achieve practical, meaningful improvements in daily life.

Sonya Renee Oglesby, PhD, LPCS, LCAS, CRC, NCC, is an addiction (substance use disorder) counselor who provides evidence-informed counseling and clinical supervision for individuals and families impacted by substance use and co-occurring life challenges. With advanced training in counseling and rehabilitation, Dr. Oglesby integrates therapeutic strategies that support recovery, strengthen coping skills, and promote long-term wellness. In addition to her clinical work, Dr. Oglesby is a senior leader at Creative Counseling & Wellness Center Corp, where she serves as an executive and practicing therapist. She is also committed to workforce development and counselor education, with experience guest lecturing on topics such as foundations of addiction, counseling theories, and the impact of addiction on families. Her professional focus includes ethical, culturally responsive care and practical, goal-oriented treatment planning that meets clients where they are. Dr. Oglesby is a National Certified Counselor and a Certified Rehabilitation Counselor, reflecting a broad perspective on recovery that includes mental health, functioning, and community reintegration. She is recognized for combining clinical expertise with mentorship and leadership in behavioral health services.

Robert D. Rosen, MD, is a family medicine physician providing comprehensive primary care for patients and families in Winston-Salem, North Carolina. Board certified in Family Medicine, Dr. Rosen brings more than two decades of clinical experience and is committed to helping patients stay healthy through preventive care, timely diagnosis, and evidence-based treatment. Dr. Rosen completed his medical education at the University of Pittsburgh and pursued postgraduate training at Wake Forest School of Medicine, where he completed both internship and residency. He practices at Ardmore Family Practice in Winston-Salem and is listed as an independent provider within the Novant Health network. In his approach to care, Dr. Rosen emphasizes long-term relationships, clear communication, and shared decision-making. He works with patients to manage everyday health concerns as well as chronic conditions, focusing on practical treatment plans that fit each patient’s needs and goals. Dr. Rosen provides care in English and strives to create a supportive, respectful environment where patients feel comfortable asking questions and taking an active role in their health.

Joshua B. Hogg, PT, is an orthopedic physical therapist with Atrium Health Wake Forest Baptist in Winston-Salem, North Carolina. He provides in-person physical therapy care for adults, with a focus on evaluating movement, reducing pain, and restoring function for musculoskeletal conditions. Mr. Hogg is certified in dry needling and functional movement assessments, and has additional training in the McKenzie Method of Mechanical Diagnosis and Therapy (MDT), Part A. His clinical interests include jaw pain and dysfunction and cervicogenic (neck-related) headaches, with an emphasis on identifying contributing factors and tailoring treatment plans to each patient’s goals. In addition to clinical practice, Mr. Hogg is actively engaged in professional development and education. He leads a monthly headache-focused journal club for colleagues to support ongoing learning and evidence-informed care. He has also served as head author on multiple North Carolina APTA poster presentations addressing the diagnosis and treatment of complex conditions. Mr. Hogg has been recognized as a High Point University Clinical Instructor of the Year for his commitment to mentoring and training future clinicians.