The Medical Opinion Marketplace

Hans L. Carlson, MD, is a Physical Medicine and Rehabilitation physician at Oregon Health & Science University (OHSU), where he serves as an Associate Professor of Orthopaedics and Rehabilitation in the OHSU School of Medicine. He is board-certified in Physical Medicine and Rehabilitation and provides comprehensive, non-surgical care focused on restoring function, reducing pain, and helping patients return to the activities that matter most. Dr. Carlson’s clinical interests include sports medicine, conservative spine care, and electrodiagnostic evaluation such as EMG and nerve conduction studies. He works with patients experiencing sports-related injuries, neck and back pain, nerve and muscle conditions, and other musculoskeletal problems, emphasizing accurate diagnosis and individualized treatment plans that may include rehabilitation strategies and coordinated multidisciplinary care. His training includes earning his medical degree at OHSU, completing residency training in Physical Medicine and Rehabilitation at Harvard Medical School/Spaulding Rehabilitation Hospital, and pursuing advanced fellowship training in sports medicine at the University of Illinois in Chicago. Through his academic and clinical roles, Dr. Carlson supports evidence-based rehabilitation care and the education of future clinicians.

Dain Paxton, DMD, is a dentist with advanced training in orofacial pain and oral medicine. He earned his Doctor of Dental Medicine degree from Oregon Health & Science University School of Dentistry and completed graduate education with a Master of Science in Orofacial Pain and Oral Medicine at the Ostrow School of Dentistry of the University of Southern California. Dr. Paxton is board certified as a Diplomate of the American Board of Orofacial Pain. Dr. Paxton’s clinical focus includes the evaluation, diagnosis, and non-surgical management of complex orofacial pain conditions, including temporomandibular disorder (TMD) and related jaw and facial pain presentations. His approach emphasizes careful assessment, conservative therapies, and individualized care plans designed to improve function and quality of life. He also provides care related to sleep-disordered breathing, incorporating dental appliance-based strategies when appropriate within a TMJ and orofacial pain-focused practice. In addition to clinical care, Dr. Paxton has contributed to scholarly work, including authorship on a systematic review and meta-analysis published in Oral Oncology. He is a member of the American Academy of Oral Medicine and the American Academy of Orofacial Pain.

Soroush Mohandessi, MD, is a physician specializing in psychiatry. He earned his medical degree from the University of Washington School of Medicine and is board certified by the American Board of Psychiatry and Neurology. Dr. Mohandessi is also a Fellow of the American Psychiatric Association. Dr. Mohandessi provides psychiatric evaluation and medication management, with appointment options that include both in-person and telemedicine visits. His approach emphasizes careful diagnostic assessment, thoughtful treatment planning, and ongoing monitoring to support clinical stability and functional improvement. His practice is subject to Oregon Medical Board practice limitations. These limitations restrict his work to forensic psychiatry, medication management, and administrative medicine, and prohibit the provision of psychotherapy. Patients and referring professionals can expect care to be delivered within the scope of these requirements.

Douglas Lloyd Meier, MD, is an ophthalmology physician providing comprehensive eye care in Portland, Oregon. He is board certified by the American Board of Ophthalmology and offers evaluation and treatment for a wide range of ocular conditions, with experience in glaucoma and corneal disease. Dr. Meier has a special focus on retinal disorders, including diabetic retinal disease and age-related macular degeneration, and provides medical laser treatment when appropriate as part of a personalized care plan. Dr. Meier earned his medical degree from the University of Iowa Roy J. and Lucille A. Carver College of Medicine. He completed an internship at Legacy Emanuel Medical Center and ophthalmology residency training at the Medical College of Wisconsin. In his clinical practice, Dr. Meier emphasizes clear communication, careful diagnostic assessment, and evidence-based management tailored to each patient’s goals and visual needs. He has been recognized by Portland Monthly magazine among leading ophthalmologists in the Portland area. Dr. Meier is also affiliated with The Portland Clinic, where he supports patients with both routine and complex eye health concerns.

Keith D. Conant, MD, is a psychiatrist in Portland, Oregon, providing comprehensive mental health evaluation and treatment for adults. He earned his medical degree from Oregon Health & Science University and completed postgraduate training there, including an internship and a psychiatry residency. Dr. Conant’s clinical approach emphasizes careful diagnostic assessment, collaborative treatment planning, and evidence-based care tailored to each patient’s goals and circumstances. As a physician specializing in psychiatry, he addresses a broad range of emotional and behavioral concerns, integrating medication management when appropriate with supportive, patient-centered guidance. He is committed to creating a respectful, confidential environment where patients feel heard and empowered to participate actively in their care. Dr. Conant practices in the Portland area and is associated with multiple clinical settings, including student health services. He provides care in English and maintains an active medical license in Oregon.

Sandra Gonzalez, Psy.D., is a licensed psychologist in Oregon and the founder of Gonzalez Psychological Services, P.C., based in Portland. She earned her Doctor of Psychology (Psy.D.) in Clinical Psychology from Pacific University’s School of Professional Psychology and has provided psychological services in Oregon for many years. Dr. Gonzalez’s work centers on comprehensive psychological evaluation, with an emphasis on culturally and linguistically appropriate assessment. She is bilingual and provides services in both English and Spanish, with particular experience conducting evaluations for Spanish-speaking Latino individuals from diverse regions, including Mexico, Central America, South America, and the Caribbean. In addition to clinical assessment, Dr. Gonzalez is certified to conduct forensic evaluations in Oregon. Her forensic practice includes evaluations related to competency to stand trial and criminal responsibility within state and federal legal systems. She also provides parental assessments in legally involved cases, including referrals from attorneys and the Department of Human Services, as well as independent psychological evaluations addressing questions such as whether a mental health condition is work-related. Dr. Gonzalez is professionally affiliated with the American Psychological Association, the Oregon Psychological Association, and the National Latino/a Psychological Association.

Dr. Kelly A. Portnoff is a physician specializing in adult rheumatology. She cares for people with autoimmune and inflammatory conditions affecting the joints, muscles, and connective tissue, and is known for a thoughtful, patient-centered approach to complex, chronic disease management. Dr. Portnoff brings extensive clinical experience to her practice, with nearly three decades in medicine. She earned her medical degree from Wright State University and completed an internal medicine residency at Huntington Memorial Hospital. She then pursued advanced subspecialty training through a rheumatology fellowship at Scripps Clinic / Scripps Green Hospital. Her background in internal medicine supports comprehensive evaluation of multisystem symptoms and coordination of care across specialties. Dr. Portnoff is licensed to practice in Oregon and California. She provides care in English and is recognized in her community for clinical excellence, including being named among Portland Monthly’s “Top Docs and Nurses.” She also provides gender-affirming care.

Richard Matteri, MD, is a physician with training in orthopedic surgery. He earned his medical degree from the University of Oregon Medical School and completed extensive postgraduate training that included internship, residency, and fellowship experience at Medical Center Hospital in Burlington, Vermont. His background reflects a long-standing focus on the evaluation and surgical management of musculoskeletal conditions, with clinical expertise grounded in comprehensive hospital-based training. Dr. Matteri is English-speaking and has practiced medicine in Oregon. His professional record reflects a commitment to maintaining standards of medical practice, with no board actions or agreements reported on file during his licensure history. Dr. Matteri’s experience in orthopedic surgery supports patient care across a wide range of bone, joint, and soft-tissue concerns, emphasizing careful assessment, evidence-based decision-making, and appropriate surgical planning when indicated.

Node Smith, N.D., is a naturopathic physician in Portland, Oregon. He serves as Director at TEAL Holistic – Integral Health Solutions, where he supports patients using an integral, whole-person approach that emphasizes understanding root causes and creating practical, sustainable health changes. Dr. Smith is known for incorporating behavioral change work into care, pairing comprehensive assessment with individualized counseling to help patients clarify goals and build habits that support long-term wellbeing. In addition to clinical practice, Dr. Smith contributes to the advancement of naturopathic medicine through professional education and editorial leadership. He has been described as an Associate Editor and Continuing Education Director for Naturopathic Doctors News & Review, reflecting an ongoing commitment to clinician learning and evidence-informed discussion within the profession. He is also associated with the National College of Natural Medicine (now the National University of Natural Medicine). Dr. Smith’s work extends beyond the clinic through workplace wellness consulting and facilitation of retreats and wellness-focused gatherings, bringing health education and integrative strategies to individuals and organizations.

Franklin Wong, MD, is a Physical Medicine & Rehabilitation physician who focuses on restoring function, reducing pain, and helping patients return to the activities that matter most. He partners with individuals managing musculoskeletal injuries, nerve and spine-related conditions, and functional limitations, using a comprehensive, rehabilitation-centered approach that emphasizes individualized care plans and measurable goals. Dr. Wong earned his medical degree from the University of Hawaiʻi John A. Burns School of Medicine. He completed residency training in Physical Medicine & Rehabilitation at the University of Washington Medical Center, including a transitional internship year, building broad experience in coordinated, multidisciplinary rehabilitation care. In practice, Dr. Wong works closely with patients and referring clinicians to guide recovery and optimize mobility and quality of life. His approach integrates careful evaluation, evidence-based treatment recommendations, and coordination with therapy and other supportive services when appropriate. Dr. Wong is licensed to practice in Oregon and provides care in English.