To address the evolving needs of the growing UCSF School of Medicine regional campus in Fresno, in November 2021, leadership at UCSF Fresno was expanded to allow for specific focus and expertise on two critical areas: 1) expanding undergraduate medical education and overseeing the growing clinical research effort at UCSF Fresno; and 2) overseeing day-to-day operations of graduate medical education and ensuring high quality clinical experiences for resident physicians.

The leadership redesign at UCSF Fresno addresses the growth at UCSF Fresno and is aimed at ensuring the success of SJV PRIME+, the Baccalaureate/MD program, in partnership with UC Merced.

Michael W. PetersonAs Associate Dean for Undergraduate Medical Education and Research, Michael W. Peterson, MD, MACP, oversees inter-campus undergraduate medical education and is responsible for building a network across the Valley to expand clinical training and engaging community providers. In addition, Dr. Peterson has oversight for expanded research initiatives at UCSF Fresno. He was named associate dean in April 2016 and served as interim associate dean since January 2015.
Dr. Peterson was recruited to UCSF Fresno as Chief of Medicine from the University of Iowa College of Medicine in 2002. He served as Chief of Medicine at UCSF Fresno and vice chair in the Department of Medicine at UCSF until July 2019.

During his tenure in Fresno, he oversaw growth of the Internal Medicine Residency Program from 45 trainees to 68 trainees, the development of seven subspecialties with 37 fellows, and led fundraising efforts to build the UCSF Fresno Clinical Research Center.

Dr. Peterson received both his undergraduate and medical degrees from the University of Minnesota, completed his residency in internal medicine at the University of Wisconsin, and completed his fellowship in pulmonary and critical care medicine at the University of Iowa.

He is a Master of the American College of Physicians, a Fellow of the American College of Chest Physicians, and a leading member of the California Thoracic Society, the largest state organization of lung specialists in the United States. He was also a founding member, councilor, and president for the Association of Chiefs and Chairs of Medicine. He is a busy physician and teacher, and has won numerous awards in both areas, including being named the Recipient of the Kaiser Award for Teaching and one of America’s Best Doctors.


Lori Weichenthal, MDAs Associate Dean for Graduate Medical Education, Clinical Affairs and Designated Institutional Officer, the role of Lori Weichenthal, MD, FACEP, expanded to include clinical affairs and interfacing with clinical partners in addition to oversight of graduate medical education training programs. Dr. Weichenthal continues to serve as Designated Institutional Officer at UCSF Fresno and oversees residency programs and the day-to-day operations of clinical aspects associated with the residency programs.

Dr. Weichenthal was appointed Assistant Dean for Graduate Medical Education in 2016 to provide oversight to the residency and fellowship programs to support a high-quality educational environment while assuring compliance with accrediting organizations. She also serves as Associate Director of the UCSF Fresno Department of Emergency Medicine Residency Program.  She joined the Emergency Medicine faculty at UCSF Fresno in 1998.

Dr. Weichenthal graduated magna cum laude from UC San Diego. She earned her medical degree from the UCSF School of Medicine and completed residency training in Emergency Medicine at UCSF Fresno at the former University Medical Center.

She is a fellow of the American College of Emergency Physicians and is the recipient of many awards and honors. She was inducted into the UCSF Academy of Medical Educators and received an Excellence in Teaching Award in Medical Education from the Haile T. Debas Academy of Medical Educators. Dr. Weichenthal is a Kaiser Award nominee and has received Faculty and Resident Research Awards. She received a Letter of Distinction from the American College of Emergency Physicians and earned mentoring distinctions from UCSF and Women in Academic Emergency Medicine. In addition, she was honored with a Lifetime Achievement Award from the Fresno Madera Medical Society.


We are committed to recruiting, training and retaining the best and the brightest physicians and patient advocates in the region, for the region. Creating a pathway for students to pursue their educational and career goals of becoming physicians and completing the bulk of their medical education and training in the San Joaquin Valley is essential to keeping them in the region. Clinical research is a key component of our curriculum. All faculty and learners are expected to engage in research, especially projects and studies addressing health issues that affect Valley community members.” 

Michael W. Peterson, MD, MACP 
UCSF Fresno Associate Dean for Undergraduate Medical Education and Research 
Frank and Roxie Moradian Chair in Medicine 
UCSF Professor of Medicine 

The goal of Graduate Medical Education at UCSF Fresno is to train skilled, caring physicians who are interested in caring for an underserved patient population while addressing health care disparities. We have a holistic approach to training future physicians that includes a strong emphasis on physician wellness and diversity and inclusion. At UCSF Fresno, we work to train physicians for the 21st century who are prepared to be leaders in dealing with health inequities that exist in our nation and in our community and the many other issues that affect our health care system. 

Lori Weichenthal, MD, FACEP
UCSF Fresno Associate Dean of Graduate Medical Education and Clinical Affairs, DIO
Associate Program Director, UCSF Fresno Emergency Medicine
UCSF Professor of Clinical Emergency Medicine