Our Care Team

Uniquely skilled. Relentlessly dedicated.

Meet the people behind the science.

No matter how advanced the science and technology, it’s the people applying it that have the power to make the biggest impact. Our physicians combine their passion for medicine with a deep and sincere desire to treat the whole person and not just their symptoms. They are particularly skilled in interpreting large data sets to glean critical health information that can be acted upon to preempt disease and drive optimal health through a unique combination of traditional, integrative and functional medicine.

Human Longevity Medical Board

Dr. David Karow MD, PhD

President and Chief of Radiology

An internationally recognized innovative leader in MR imaging and genomic analytics, Dr. Karow is a proponent of using data-driven precision medicine testing and AI to achieve extensions in the healthy human lifespan. He is the senior author and co-author of numerous publications focused on early detection of chronic age-related disease using imaging and genomic biomarkers. Dr. Karow graduated from medical school at the University of Michigan, Ann Arbor in 2005 in a combined MD/PhD program with a distinction in research and completed residency and fellowship at UC San Diego and UC Los Angeles, respectively. David currently serves as President and Chief of Radiology.

Dr. Julie Chen MD

Chief Clinical Officer for Human Longevity and Medical Director

Dr. Julie Chen is the Chief Clinical Officer for Human Longevity and Medical Director of Human Longevity, San Francisco. Dr. Chen specializes in internal medicine/integrative medicine, and she has over a decade of clinical research experience at institutions such as National Cancer Institute, FDA, Clinical Center at National Institutes of Health, Mount Sinai, USC, and UC Irvine. She has also been featured as a medical expert on TV shows like Dr. Oz, The Doctors, KABC-LA, Chicago Fox 32 News, and more. Additionally, Dr. Julie Chen has been recognized and published in national publications, such as, but not limited to, HuffingtonPost.com, Men’s Health, MSN.com, Healthline.com.

Dr. William D. Keen MD FACC

Chief of Cardiology and Medical Director

Dr. Keen is the Chief of Cardiology and Medical Director of Human Longevity, San Diego. He has over two decades of clinical, administrative, and academic experience with numerous contributions to clinical cardiology. His passion is early detection and management of clinical and pre-clinical heart disease. Prior to Human Longevity, Dr. Keen was the chief of echocardiography, chief of the adult congenital heart disease program, chief of the department of internal medicine, and assistant medical director over the departments of emergency medicine, hospital medicine, critical care, radiology, laboratory and pathology, and continuing care at Kaiser Permanente. He maintains an academic appointment in the division of cardiology at the University of California, San Diego as clinical professor of medicine.

Our Care Team

Dr. Julie Chen MD

Chief Clinical Officer for Human Longevity and Medical Director

Dr. Julie Chen is the Chief Clinical Officer for Human Longevity and Medical Director of Human Longevity, San Francisco. Dr. Chen specializes in internal medicine/integrative medicine, and she has over a decade of clinical research experience at institutions such as National Cancer Institute, FDA, Clinical Center at National Institutes of Health, Mount Sinai, USC, and UC Irvine. She has also been featured as a medical expert on TV shows like Dr. Oz, The Doctors, KABC-LA, Chicago Fox 32 News, and more. Additionally, Dr. Julie Chen has been recognized and published in national publications, such as, but not limited to, HuffingtonPost.com, Men’s Health, MSN.com, Healthline.com.

Dr. William D. Keen MD FACC

Chief of Cardiology and Medical Director

Dr. Keen is the Chief of Cardiology and Medical Director of Human Longevity, San Diego. He has over two decades of clinical, administrative, and academic experience with numerous contributions to clinical cardiology. His passion is early detection and management of clinical and pre-clinical heart disease. Prior to Human Longevity, Dr. Keen was the chief of echocardiography, chief of the adult congenital heart disease program, chief of the department of internal medicine, and assistant medical director over the departments of emergency medicine, hospital medicine, critical care, radiology, laboratory and pathology, and continuing care at Kaiser Permanente. He maintains an academic appointment in the division of cardiology at the University of California, San Diego as clinical professor of medicine.

Dr. Pamila Brar MD

Longevity Physician

Having served as the past president of the American Academy of Private Physicians, Dr. Brar is a precision medicine physician with a deep love for science and translating complex ideas into accessible information.

Dr. Eric Dinenberg MD, MPH

Longevity Physician

Fellowship trained in Integrative Medicine, Dr. Dinenberg authored a book on mindfulness, produced an album of meditations, and has over eighteen years of experience bringing mindfulness for well-being and elite performance to healthcare providers and patients.

Dr. Margaret O'Byrne MD

Longevity Physician

Dr. O’Byrne graduated from Rutgers Medical School, the state medical school of New Jersey. She completed Internal Medicine and Vascular Medicine residency and fellowship at the Cleveland Clinic Hospital in Cleveland, Ohio. Dr. O’Byrne also completed an Integrative Medicine fellowship at the Andrew Weil Center, University of Arizona. Her staff clinical and teaching experience spans over 20 years and includes Cleveland Clinic, Scripps Clinic, University of San Diego Medical School and Veterans Administration Health Center. Additionally, she works as an expert medical consultant for the Medical Board of California.

Dr. Tina Ziainia MD, FACOG

Longevity Physician

With over twenty years of clinical experience and numerous peer reviewed journal articles, Dr. Ziainia is the Chief of Women’s Health and Performance Medicine at Human Longevity. Dr. Ziainia has won countless awards from Top Doctors of San Diego (2013-2019, 2021) to Sharp Rees Stealy Physician Excellence Award. Additionally, Dr. Ziainia has been interviewed on numerous media platforms from KTVI FOX 2 News, KPBS, and KMOV News etc.

Evelyne Bischof, MD, MPH

Longevity Physician – Concierge

As an internal medicine specialist with a focus on oncology and longevity, I’m passionate to bring precision medicine through AI- and machine learning data translation toward individualized prevention and treatment.

Jessica Kelley MSN, AGPCNP-BC

Nurse Practitioner

With over a decade of clinical experience, most notably in Internal Medicine at Scripps Clinic Torrey Pines, Jessica is Board-Certified in Adult and Gerontology Primary Care with dual degrees as Nurse Practitioner and Clinical Nurse Specialist. Her approach to precision medicine transcends pharmacologic therapy, encompassing holistic and lifestyle measures tailored to the individual. She is dedicated to Human Longevity’s mission of extending the healthy, high-performance human lifespan and looks forward to working with you on this journey.

Abigail Mori, MS, AGPCNP-BC

Nurse Practitioner

Board certified with a clinical background in Cardiology and Internal medicine, Abigail has a passion for disease prevention through optimization of all aspects of health and wellness. She considers multidimensional aspects of well-being to treat the whole person, with a goal to not only live longer but thrive longer! She has been recognized with Scripps’ “Honored Caregiver” award by her patients. She looks forward to assisting you in your wellness journey with Human Longevity.

Julia Appis, DNP, FNP-BC

Nurse Practitioner

Julia Appis is board certified with experience in internal medicine as well as family medicine. Julia has a lot of interest and passion for preventative medicine and using lifestyle modifications to achieve optimal health. She is a big proponent of diet and exercise and enjoys discussing how these elements can fit best into someone’s life. She focuses on an individualized approach to medicine and recognizes that each client has his/her own specific needs that must be addressed to achieve longevity.

World-class Experts On Demand

In complex cases, it’s important to call upon experts for second opinions or added expertise. See our ecosystem >

Massachusetts General Hospital

We are also connected to the 2.500 physicians who practice in virtually every specialty and subspecialty at the renowned Massachusetts General Hospital. Learn more >

DoctorsForMe.ai

Through doctorsforme.ai, Human Longevity has access to a searchable database that provides the names, education, clinical practices and research publications of over 50,000 physicians from the top 40 US hospitals—including the top 20 cancer centers, top 10 general hospitals and top 10 childrens hospitals. Learn more >

Proactive, Progressive Health Care

Prevention is the cornerstone of optimal health. By analyzing over 150 gigabytes of your body's unique data, we identify your risks and leverage your personal strength. We don't just want to see your health improve, we want to partner with you to see it flourish.