School of Medicine
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John Kleimeyer, MD
Clinical Assistant Professor, Orthopaedic Surgery
BioDr. Kleimeyer specializes in orthopaedic spine surgery, treating cervical, thoracic and lumbar spine disorders including disc herniations, stenosis, myelopathy, fractures, scoliosis and more. He treats both simple and complex spine problems including revisions. His goal is to provide the most minimally invasive solution to improve patients’ quality of life. This includes less invasive discectomies, decompressions, disc replacements, and fusions. He is particularly focused on single-position procedures to limit surgical time and recovery.
Prior to coming to the Stanford Department of Orthopaedic Surgery and the Stanford Spine Center, Dr. Kleimeyer completed his residency in orthopaedic surgery at Stanford University where he was elected to the Alpha Omega Alpha honor society. He then completed his spine fellowship at the renowned Emory University Spine Center. He is board-certified.
Dr. Kleimeyer has received honors and recognition for his research in the fields of orthopaedic surgery and spine surgery. He participates in national and international specialty societies and as a journal reviewer. His research interests include improving clinical outcomes of surgical and nonsurgical care, the genetics of orthopaedic and spine disorders, and cost efficacy. Dr. Kleimeyer has published over 20 journal articles in addition to other reviews and textbook chapters, and has presented research nationally and internationally. -
Clarissa Klein
Scientific Data Curator 2, Biomedical Data Science
BioScientific curator and coordinator for the Clinical Genome Resource (ClinGen) and the Pharmacogenomics Knowledgebase (PharmGKB) / ClinPGx. Program Manager for Stanford ClinGen.
Coordinator for ClinGen's Data Access, Protection, and Confidentiality (DAPC) Working Group, the Rheumatologic and Autoimmune Diseases Clinical Domain Working Group (RAD-CDWG), Multigenic Taskforce, HLA Working Group, and the Pharmacogenomics Working Group (PGxWG). Coordinator for PharmGKB's submission for FDA recognition of their clinical annotation database, and curator with a focus on PharmGKB Pediatric. -
Jonathan D Klein
Marron and Mary Elizabeth Kendrick Professor of Pediatrics
Current Research and Scholarly InterestsMy studies address:
1. Confidentiality and Access to Care studies of confidential time during well-visits and policy analyses addressing quality of care and health systems capacity for adolescents and young adults in the US and globally; and,
2, Tobacco, nicotine, and second-hand smoke studies of primary care counseling to reduce nicotine addiction in adolescents and programs to engage medical specialty groups in secondhand smoke clinical and policy interventions. -
Teri Klein
Professor (Research) of Biomedical Data Science, of Medicine (BMIR) and, by courtesy, of Genetics
On Partial Leave from 01/16/2026 To 12/18/2026Current Research and Scholarly InterestsCo-founder, Pacific Symposium on Biocomputing
NIEHS, Site Visit Reviewer
NIH, Study Section Reviewer
