About
Kristin Karlyn, MD, earned her Bachelor of Science in Biochemistry from California Polytechnic State University, San Luis Obispo in 1992. She then completed her medical degree at the University of California, Irvine, School of Medicine in 1996. Her internship and residency in Internal Medicine both took place at Huntington Hospital in Pasadena. She finished that training as Chief Medical Resident in 2000. She holds board certification as a Diplomate of the American Board of Internal Medicine.
Dr. Karlyn has remained on staff at Huntington Hospital for more than two decades. She served as Medical Director of Pasadena Urgent Care and Occupational Medicine from 2015 to 2018. She spent a decade as Clinical Teaching Faculty in Internal Medicine at Huntington Hospital and currently teaches in the Physician Assistant Program at Keck Graduate Institute. She volunteers as a physician with the LA Opera Doctor Program. Her clinical passions include Women's Health, Geriatrics, Nutrition, and Lifestyle Medicine. She speaks basic conversational and medical Spanish. Born and raised in Pasadena, she still lives there with her family and enjoys hiking, cooking, traveling, and exploring new cuisines.
Education & Training
Undergraduate
California Polytechnic State University, San Luis Obispo - BS Biochemistry, 1992
Medical School
University of California, Irvine, School of Medicine - Doctorate of Medicine, 1996
Residency
Internal Medicine, Huntington Hospital, Pasadena, CA, 1997-1999; Chief Medical Resident, Huntington Hospital, 1999-2000
Additional Training
Internship, Huntington Hospital, 1996-1997
Certifications
Languages
English, Medical Spanish
Conditions Treated
Who is Dr. Karlyn right for?
Dr. Karlyn is a strong fit for adults seeking a deeply rooted, relationship-driven primary care physician in Pasadena. Women navigating health changes across all life stages benefit from her focused expertise in Women's Health. Older adults and those managing chronic conditions find her Geriatrics background particularly valuable. Patients interested in nutrition and lifestyle-based approaches to long-term health will connect well with her clinical philosophy. Her round-the-clock availability and same-day appointments suit anyone who wants a physician they can genuinely reach.
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Frequently Asked Questions
Dr. Karlyn treats a broad range of conditions across internal medicine, including chronic disease management, preventive care, and urgent care needs. She has particular expertise in Women's Health and Geriatrics. She also addresses nutrition-related concerns and supports patients in making sustainable lifestyle changes.
Yes. Dr. Karlyn holds board certification as a Diplomate of the American Board of Internal Medicine.
Dr. Karlyn earned her medical degree from the University of California, Irvine, School of Medicine in 1996. She completed her internship, residency, and Chief Medical Residency in Internal Medicine at Huntington Hospital in Pasadena.
Dr. Karlyn has practiced in Pasadena for more than two decades. She has maintained staff privileges at Huntington Hospital throughout her career and still lives in the community she serves.
Yes. Women's Health is one of Dr. Karlyn's core clinical interests. She addresses preventive screenings, hormonal health, and other concerns specific to women across all age groups.
Yes. Geriatric Medicine is one of Dr. Karlyn's specialties. She regularly cares for older adults and tailors her approach to the unique health needs that come with aging.
Yes. Dr. Karlyn speaks conversational and medical Spanish, which allows her to communicate with Spanish-speaking patients.
Yes. Dr. Karlyn spent a decade as Clinical Teaching Faculty in Internal Medicine at Huntington Hospital. She currently teaches in the Physician Assistant Program at Keck Graduate Institute.
Yes. Dr. Karlyn has worked at Huntington Hospital for more than 20 years. Those long-standing relationships with ER physicians, specialists, and hospitalists benefit her patients when specialist referrals or hospital coordination become necessary.
Doctor profile last updated March 21, 2026