Personal Information
Dr. Dennis Kasimian
Board-Certified Pathologist
Education & Training
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Education :Board-Certified in Anatomical and Clinical Pathology
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Experience :40+ years
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Credentials :Board-Certified Pathologist in GI, Breast and General pathology
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Practice Areas :Anatomical and Clinical Pathology, Breast, GI, Head and Neck, and Cytopathology
Work Experience / Skills
Biography
Dr. Dennis Kasimian is the Owner and Medical Director of TMI Pathology Associates in the San Fernando Valley, which he has led for more than 40 years. Based in Los Angeles County, he has also served as Medical Director of Pathology and Clinical Laboratories at Valley Presbyterian Hospital for over 35 years and Medical Director of the Clinical Laboratory at Mission Community Hospital for over 20 years. He is currently a staff pathologist at Valley Presbyterian Hospital and has served as the Medical Director of TMI-American Specialty Laboratory since 2021.
Dr. Kasimian is board certified in Anatomical and Clinical Pathology with particular interests in breast, GI, head and neck, and cytopathology. With extensive experience in anatomic pathology and in overseeing laboratory operations, Dr. Kasimian ensures efficient workflow and top‑quality diagnostic services across all specimen types. A dedicated leader in community health, Dennis has built a reputation for operational excellence and timely, accurate reporting. Under his guidance, American Specialty Laboratory consistently meets the needs of referring physicians and their patients, maintaining high standards of service and testing reliability.