Dr. Jeffrey UngerMD, ABFP, FACE
Family Medicine
at Unger Primary Care Concierge — Rancho Cucamonga, CA
About
Jeffrey R. Unger, MD, ABFP, FACE is a double board-certified physician in Family Medicine and Diabetology with 37 years of primary care experience. He holds fellowship status with the American Association of Clinical Endocrinologists (FACE) and the American Board of Family Practice. A third-generation physician, Dr. Unger has built his career around diagnosing and managing the most complex chronic conditions a primary care doctor can encounter. His clinical passions include type 1 and type 2 diabetes, addiction and substance abuse disorders, migraine, chronic pain, bipolar disorder, Cushing's disease, sleep apnea, narcolepsy, obesity, and metabolic disease. He has lived with type 1 diabetes himself since 1986 and has worn an insulin pump for over 30 years. That personal experience deepens his approach to diabetes care in a way few physicians can match.
Dr. Unger serves as Director of Metabolic Studies at Catalina Research Institute in Chino, California, and as Medical Director for Akasha Recovery Center in San Diego. He also serves as Regional Director for Mission Hospice. He co-authored the AACE 2021 guidelines for technology use in diabetes management and led the Lira Prime Global clinical trial evaluating liraglutide in primary care settings. He has participated in over 150 clinical trials and published more than 190 peer-reviewed articles. He authored three medical textbooks on diabetes and one on migraine headaches. He lectures internationally on diabetes and migraine more than 100 times each year and serves as an associate editor for Diabetes Care, Clinical Diabetes, and the Journal of Family Practice. Dr. Unger earned the Family Physician of the Year award for the Inland Empire in 2018 and the American Diabetes Association named him Father of the Year in 2009. He teaches family medicine to UC Riverside medical students and serves as team physician for the Rancho Cucamonga Quakes. His family is woven into the practice: wife Lisa manages operations and membership, and daughter Sarah has worked with the practice for 14 years.
Education & Training
Fellowship
Fellow of the American Association of Clinical Endocrinologists (FACE)
Additional Training
Double Board Certified in Family Medicine and Diabetology; American Board of Family Practice (ABFP)
Certifications
Conditions Treated
Who is Dr. Unger right for?
Dr. Unger is best suited for patients managing complex, difficult-to-control chronic conditions. Adults with type 1 or type 2 diabetes benefit from his hands-on expertise and personal understanding of the disease. Patients dealing with addiction, metabolic disorders, chronic pain, or migraine find a clinician who handles most of their care directly. Those who want a physician deeply engaged in cutting-edge research and clinical trials will feel at home here.
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Frequently Asked Questions
Dr. Unger focuses on the most complex chronic conditions in primary care. His specialties include type 1 and type 2 diabetes, addiction and substance abuse, migraine, chronic pain, bipolar disorder, sleep apnea, obesity, Cushing's disease, and metabolic disease. He manages 95% of his patients without outside referrals.
Yes. Dr. Unger holds double board certification in Family Medicine and Diabetology. He also holds fellowship status with the American Association of Clinical Endocrinologists, designated by the FACE credential.
Dr. Unger starts every appointment with listening and a physical exam before ordering any tests. He prohibits computer input during patient interviews, so each visit stays fully focused on the person in the room. He does not use electronic medical records during consultations.
Yes. Dr. Unger has lived with type 1 diabetes since 1986 and has worn an insulin pump for over 30 years. That firsthand experience gives him a perspective on diabetes management that few physicians bring to their practice.
Dr. Unger deploys integrated insulin pumps and continuous glucose sensors for eligible patients. He co-authored the AACE 2021 guidelines on technology use in diabetes management. His practice stays current with the most advanced tools available in the field.
Yes. Dr. Unger has participated in over 150 clinical trials and published more than 190 peer-reviewed articles. He led the Lira Prime Global clinical trial evaluating liraglutide in primary care settings and serves as Director of Metabolic Studies at Catalina Research Institute in Chino, California.
Yes. Dr. Unger treats addiction, substance abuse disorders, depression, and bipolar disorder as part of his primary care scope. He offers behavioral interventions, group therapy, and hypnosis and relaxation therapies to support patients managing these conditions.
Dr. Unger serves as Medical Director for Akasha Recovery Center in San Diego and Regional Director for Mission Hospice. He teaches family medicine to UC Riverside medical students and lectures internationally on diabetes and migraine more than 100 times each year. He also serves as an associate editor for Diabetes Care, Clinical Diabetes, and the Journal of Family Practice.
Yes. The Inland Empire named Dr. Unger its Family Physician of the Year in 2018. The American Diabetes Association recognized him as Father of the Year in 2009.
Doctor profile last updated March 21, 2026