About
Dr. Yenjean Hwang brings dual board certification in Internal Medicine and Infectious Diseases to her concierge practice in Orinda, California. She earned her undergraduate degree at Stanford University and her medical degree at The University of Chicago, Pritzker School of Medicine. She completed her residency training at University of Utah Medical Center. The American Board of Internal Medicine certified her in Internal Medicine in 1998 and in Infectious Diseases in 1999.
Dr. Hwang holds leadership roles at Alta Bates Summit Medical Center, where she serves as Medical Director of Infection Control and Section Chief of Infectious Diseases. She also teaches as a member of the internal medicine residency faculty at ABSMC. Her professional affiliations include the Infectious Disease Society of America, the American College of Physicians, and the Alameda County Medical Association. She is passionate about complex diagnostics, infectious disease management, and advocating for patients with difficult-to-diagnose conditions. A lifelong East Bay resident, she returned home after training to raise her four sons alongside her husband. Her commitment to global health takes her overseas as a volunteer supporting medical missions to rural Zambia. Patients have trusted her care for two decades, and many credit her sharp diagnostic instincts with life-changing outcomes.
Education & Training
Undergraduate
Stanford University
Medical School
The University of Chicago, Pritzker School of Medicine
Residency
University of Utah Medical Center
Certifications
Conditions Treated
Who is Dr. Hwang right for?
Dr. Hwang is an excellent match for adults managing complex or difficult-to-diagnose conditions. Patients with a history of infectious diseases, recurrent infections, or septicemia benefit directly from her subspecialty training. She works especially well with patients who have complicated medical histories that other physicians have struggled to address. Adults seeking a preventive-first approach to primary care will find her philosophy well-aligned with their goals. Patients who value direct, around-the-clock access to their physician thrive in her practice model.
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Frequently Asked Questions
Dr. Hwang specializes in internal medicine and infectious diseases. She treats conditions including septicemia, complex infections, and complications related to compromised immune systems. She also manages patients with multiple chronic conditions and difficult-to-diagnose presentations. Her dual board certifications position her to handle cases that other physicians may find challenging.
Yes, Dr. Hwang holds two board certifications from the American Board of Internal Medicine. She earned her Internal Medicine certification in 1998 and her Infectious Diseases certification in 1999. Both certifications remain active.
Dr. Hwang studied as an undergraduate at Stanford University. She earned her medical degree at The University of Chicago, Pritzker School of Medicine. She completed her residency at University of Utah Medical Center before returning to the East Bay to build her career.
Dr. Hwang serves as Medical Director of Infection Control and Section Chief of Infectious Diseases at Alta Bates Summit Medical Center. She also teaches as a member of the internal medicine residency faculty at ABSMC. These roles keep her closely connected to current clinical research and practice standards.
Dr. Hwang takes a thorough, investigative approach to patients with complicated histories. She listens carefully and works to identify root causes rather than treating symptoms in isolation. Patients have credited her with diagnosing conditions that went undetected for years under other physicians' care.
Yes, infectious disease management is a central part of Dr. Hwang's clinical work. She holds board certification specifically in Infectious Diseases and serves as Section Chief of Infectious Diseases at Alta Bates Summit Medical Center. Many of her longest-tenured patients came to her specifically for infectious disease expertise.
Dr. Hwang has been a member of the practice since 2000. She grew up in the East Bay and returned to the area after completing her medical training. Her roots in the local community span more than two decades of clinical care.
Yes, Dr. Hwang serves on the teaching faculty for the internal medicine residency program at Alta Bates Summit Medical Center. She mentors residents alongside her clinical and leadership responsibilities. Her involvement in training the next generation of physicians reflects her long-term commitment to the field.
Doctor profile last updated April 10, 2026