The Medical Opinion Marketplace

D. David Ezeanolue, MD, is an internal medicine physician with additional focus in pain management. With more than 25 years in practice, he provides comprehensive, patient-centered care that integrates the management of chronic medical conditions with an emphasis on improving function and quality of life for patients living with pain. Dr. Ezeanolue earned his medical and surgical degree from the University of Nigeria College of Medicine. He completed postgraduate training at Kingsbrook Jewish Medical Center in Brooklyn, New York, and went on to serve as Chief Resident in the Department of Physical Medicine & Rehabilitation at the University of Rochester Medical Center. He holds the C.I.M.E. designation (Certified Independent Medical Examiner) and is listed as a diplomate of multiple professional boards and organizations, including the American Board of Internal Medicine, the American Board of Physical Medicine & Rehabilitation, the American Board of Electrodiagnostic Medicine, and the American Board of Interventional Pain Physicians. Dr. Ezeanolue is affiliated with University Medical Center of Southern Nevada and is fluent in English and Spanish.

Holman Chan, MD, is an orthopaedic surgeon specializing in foot and ankle surgery, with additional expertise in orthopaedic trauma and general orthopaedics. Born in Vancouver, Canada, he earned a Bachelor of Science from the University of British Columbia and completed his medical degree at the University of Alberta. He continued at the University of Alberta for surgical internship and orthopaedic surgery residency training, serving as chief resident. Dr. Chan pursued advanced fellowship training in orthopaedic trauma at Strong Memorial Hospital in Rochester, New York, followed by specialized fellowship training in foot and ankle surgery at Mount Sinai Hospital / Mount Sinai Beth Israel in New York, New York. Board certified by the American Board of Orthopaedic Surgery, Dr. Chan provides comprehensive evaluation and surgical and nonsurgical management for a wide range of lower-extremity conditions, including acquired deformities of the foot and ankle. His clinical interests span complex injuries and disorders affecting mobility and function, with an emphasis on helping patients return to activity safely. Dr. Chan has also contributed to peer-reviewed orthopaedic research publications. He sees patients in Henderson, Nevada, as part of Nevada Orthopedic & Spine Center.

John Kastrup, M.D., is an adult reconstructive orthopaedic surgeon specializing in the evaluation and surgical treatment of arthritis and degenerative joint conditions, with a focus on hip and knee replacement. He is affiliated with Nevada Orthopedic & Spine Center, where he provides contemporary joint reconstruction options, including minimally invasive techniques and partial knee replacement when appropriate. His approach emphasizes modern perioperative pain-management and rapid-recovery strategies designed to support safe surgery and an efficient return to function. Dr. Kastrup earned his medical degree from the University of Cincinnati College of Medicine and completed orthopaedic surgery residency training at Hamot Medical Center / UPMC Hamot in Erie, Pennsylvania. He pursued advanced subspecialty fellowship training in Adult Reconstructive Surgery at Cleveland Clinic, with an emphasis on arthritis care and joint replacement of the shoulder, hip, and knee. He is listed as board certified in orthopaedic surgery. In addition to clinical practice, Dr. Kastrup has contributed to peer-reviewed medical literature, including co-authoring research on treatment outcomes for mallet finger. He maintains hospital affiliations that include Dignity Health–St. Rose Dominican locations as well as Henderson Hospital and West Henderson Hospital.

Gregory P. Brown, M.D., is a psychiatrist with board certification in Psychiatry and Forensic Psychiatry. He provides comprehensive psychiatric care and is experienced in applying clinical expertise to complex legal and administrative questions through forensic psychiatric evaluations, including matters related to civil, criminal, and family court, as well as independent psychiatric evaluations. Dr. Brown earned a Bachelor of Arts in Psychology from Oberlin College and received his Doctor of Medicine degree from the University of Arkansas for Medical Sciences. He completed residency training in General Psychiatry at Albert Einstein Medical Center in Philadelphia, followed by fellowship training in Forensic Psychiatry at the University of Rochester. In addition to his clinical work, Dr. Brown serves as a Professor of Psychiatry at the Kirk Kerkorian School of Medicine at UNLV and has held leadership responsibilities as a psychiatry residency program director. His combined roles in patient care, forensic assessment, and medical education reflect a commitment to evidence-based practice, careful clinical reasoning, and the development of future physicians.

Dr. Kevin Paul Ramsey is a family medicine physician providing comprehensive primary care for adolescents and adults. He earned his medical degree from the Medical University of South Carolina College of Medicine and completed residency training at Chestnut Hill Family Practice with affiliation to Children’s Hospital of Philadelphia. Dr. Ramsey is board certified in Family Medicine and has additional training and certification as an independent medical examiner. As Medical Supervisor at The DOCS Primary Care in Henderson, Nevada, Dr. Ramsey emphasizes practical, evidence-based care tailored to each patient’s goals and health history. His clinical interests include chronic pain management, depression, hormone replacement, and medical weight loss, with a focus on thoughtful evaluation and long-term support for chronic conditions. He is also affiliated with local hospitals, including Henderson Hospital and the Dignity Health–St. Rose Dominican campuses, and is listed with P3 Health Partners. Dr. Ramsey is licensed to practice medicine in Nevada, Arizona, and Pennsylvania and is committed to helping patients navigate preventive care, acute concerns, and ongoing medical needs with clear communication and continuity of care.

Dr. Stephanie B. Holland is a licensed psychologist who provides clinical and forensic psychological services in Las Vegas, Nevada. She specializes in comprehensive forensic evaluations and consultation for family and civil court matters, with particular experience in parenting and parental-capacity evaluations, child development considerations, and high-conflict custody cases. Her work also includes expert witness services, including deposition and in-court testimony, informed by a careful, evidence-based approach to assessment. Dr. Holland earned her bachelor’s degree in Psychology from the University of Nevada, Las Vegas, and completed graduate training in psychology at the California School of Professional Psychology in Los Angeles, where she received both her master’s degree and doctorate in psychology (PsyD). She has also contributed to the training of future clinicians as an adjunct professor in the UNLV Department of Psychology, supporting field placement education. In addition to clinical practice, Dr. Holland has served in professional leadership roles with the Nevada State Board of Psychological Examiners and participates in PSYPACT. She is affiliated with the National Register of Health Service Psychologists and the Association of Family and Conciliation Courts, and has been involved in community-focused nonprofit leadership supporting children and justice-involved youth.

Dr. Valerie C. Modirpour is a licensed psychologist who provides evidence-informed psychological services for adolescents, adults, and older adults. She earned her PhD in Clinical Psychology from Palo Alto University, following an MA in Psychology from Texas A&M University–Corpus Christi and a BA in Psychology from Baylor University. Dr. Modirpour completed postdoctoral fellowship training at Desert Psychological and has worked in a range of clinical settings, including community mental health and behavioral health programs. Dr. Modirpour has particular experience working with autistic adults and is committed to strengths-based, affirming care. She emphasizes thoughtful assessment and diagnostic or neuropsychological evaluation when appropriate, using findings to clarify concerns and guide individualized treatment planning. In addition to in-person care in Nevada, Dr. Modirpour holds PSYPACT authority, which allows her to provide telepsychology services to clients in PSYPACT-participating states. She provides services in English and Spanish and is dedicated to creating a respectful, collaborative space where clients feel understood and supported.

Leah N. Wingeart, PsyD, is a licensed clinical psychologist who provides individual psychotherapy for adults. She is associated with ShrinkWrapt Las Vegas, LLC, and is licensed to practice in Nevada, Colorado, Hawaii, and Arizona. Dr. Wingeart also holds PSYPACT telepsychology authority, supporting interjurisdictional virtual care where permitted. Dr. Wingeart earned her doctorate in Clinical Psychology with a specialization in health psychology from the University of Denver. Her training also includes a master’s degree in school guidance and counseling (K–12) from Loyola College in Baltimore and a bachelor’s degree in psychology from the University of Maryland. Her clinical work commonly addresses depression and anxiety, trauma- and stressor-related concerns including PTSD symptoms, and challenges related to life transitions, work, and relationships. She has a particular interest in supporting military and veteran populations. Therapeutically, Dr. Wingeart works primarily from a psychodynamic foundation and integrates cognitive-behavioral, interpersonal, and mindfulness-based techniques. She is familiar with evidence-based PTSD treatments, including Prolonged Exposure and Cognitive Processing Therapy. She also expresses an interest in the role of nutrition and supplements as part of overall mental wellness.

Mark J. Chambers, PhD, is a licensed clinical psychologist providing psychological evaluation and psychotherapy services for individuals seeking support with emotional, behavioral, and life challenges. He works collaboratively with patients to understand presenting concerns, clarify goals, and develop practical, evidence-informed strategies that promote insight, resilience, and improved day-to-day functioning. Dr. Chambers offers comprehensive assessment as part of clinical care when appropriate, helping to identify patterns that may be contributing to distress and to guide treatment planning. In psychotherapy, he emphasizes a respectful, patient-centered approach, tailoring care to each person’s needs, preferences, and progress over time. His work commonly includes helping patients strengthen coping skills, improve emotional regulation, address unhelpful thought and behavior patterns, and enhance relationships and overall well-being. As a doctoral-level psychologist, Dr. Chambers brings advanced training in clinical assessment and therapeutic intervention, and he maintains professional standards consistent with licensed practice in Nevada. Patients can expect a thoughtful, confidential setting focused on clear communication, achievable goals, and sustained support throughout the course of care.

Derek Duke, MD, is a board-certified neurosurgeon specializing in the surgical care of spine and complex neurologic conditions. He has served patients in the Las Vegas area for more than two decades and is known for comprehensive spine expertise spanning the craniocervical junction through the sacrum. Dr. Duke earned his medical degree with distinction from the University of Missouri–Kansas City and completed neurosurgical residency training at Mayo Clinic School of Graduate Medical Education in Rochester, Minnesota. He is a Fellow of the American College of Surgeons and a member of the American Association of Neurological Surgeons, reflecting a commitment to ongoing professional development and high standards of surgical care. Dr. Duke is affiliated with Sunrise Hospital and Medical Center and Southern Hills Hospital and Medical Center. He is also reported to speak Spanish, supporting clear communication with a broader range of patients and families. His practice focuses on thoughtful evaluation, patient education, and individualized treatment planning with an emphasis on safe, evidence-based surgical decision-making.