Dr. Jeffrey UngerMD
Family Medicine
at Jeffrey Unger, MD - Concierge Family Medicine — Rancho Cucamonga, CA
About
Jeffrey Unger, MD is a third-generation physician who traces his calling to age 5 in Chicago. He grew up accompanying his grandfather and father on house calls, absorbing a model of medicine built on personal connection. He earned his medical degree from Northwestern University and completed a three-year Family Medicine residency at Kern Medical Center in Bakersfield, California. He holds board certification in Family Medicine.
In 1986, Dr. Unger received a personal diagnosis of Type 1 Diabetes. Unable to find a local physician with sufficient expertise in managing the condition, he taught himself diabetes self-management through rigorous trial and error. That experience made him a sought-after educator, and he soon began teaching diabetes management skills to primary care physicians at local and national meetings. He went on to advise pharmaceutical companies on emerging therapies including inhaled insulin, GLP-1 analogues, rapid-acting insulin analogues, SGLT-2 inhibitors, and DPP-4 inhibitors. Today, Dr. Unger brings that depth of clinical experience to patients across every age group in the Inland Empire, where he and his wife Lisa have lived for more than 25 years.
Education & Training
Undergraduate
Northwestern University
Medical School
Northwestern University
Residency
Family Medicine residency, Kern Medical Center, Bakersfield, CA (3 years)
Certifications
Conditions Treated
Who is Dr. Unger right for?
Dr. Unger is a strong fit for patients of all ages seeking a primary care physician who takes a whole-body approach. Adults managing Type 1 or Type 2 diabetes benefit greatly from his clinical depth and personal experience with the condition. Patients with chronic conditions like hypertension or high cholesterol find his attentive, unhurried visit style well-suited to ongoing management. Families looking to keep members of all ages under one physician's care, from infants to seniors, will find his multigenerational approach a natural match.
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Frequently Asked Questions
Dr. Unger specializes in family medicine and preventive care, treating patients across all age groups. He has particular clinical depth in diabetes management, including both Type 1 and Type 2 diabetes. He also manages chronic conditions such as high blood pressure and high cholesterol, and offers women's health and gynecological services.
Yes, Dr. Unger holds board certification in Family Medicine. He earned his medical degree from Northwestern University and completed a three-year Family Medicine residency at Kern Medical Center in Bakersfield, California.
Dr. Unger received a personal diagnosis of Type 1 Diabetes in 1986. He taught himself diabetes self-management through extensive study and practical experience. He later taught diabetes management to primary care physicians at local and national meetings and advised pharmaceutical companies on therapies including GLP-1 analogues, SGLT-2 inhibitors, and DPP-4 inhibitors.
Yes, Dr. Unger treats patients of all ages, from infants through seniors. His multigenerational approach allows entire families to receive care under one physician.
Dr. Unger builds care around personal connection and thorough attention. He grew up observing his grandfather and father on house calls, and that model shapes how he practices today. Visits average 37 minutes, and members can reach him directly by phone, text, or email at any time.
Dr. Unger earned his medical degree from Northwestern University. He completed a three-year Family Medicine residency at Kern Medical Center in Bakersfield, California.
Yes, Dr. Unger includes women's health and gynecological services as part of his clinical scope. These services integrate naturally into his whole-body approach to family medicine.
Dr. Unger and his wife Lisa have lived and practiced in the Inland Empire for more than 25 years. He brings that long-standing community presence to his patients in Rancho Cucamonga.
Doctor profile last updated March 21, 2026