About
Dr. James Wallstrom earned his Bachelor of Science in Biology from Stanford University before completing his Doctorate of Medicine at Loma Linda University School of Medicine in 1989. He then trained at the Mayo Clinic in Rochester, Minnesota, completing both his internship and internal medicine residency between 1989 and 1992. Stanford recognized his clinical excellence with the Harold J. Hoxie Award for Outstanding Achievement and Excellence in Internal Medicine. He has also received the Patient Choice Award, Most Compassionate Doctor, Pasadena Top Doctor, and Americas Top Physician honors. He holds membership in the American College of Physicians.
Dr. Wallstrom has practiced primary care medicine in the communities along the 210 Freeway since 1993. He describes himself as tenacious and deeply curious, approaching each patient as a unique individual with distinct health goals. He is passionate about listening as a clinical tool. He believes open conversation gives patients a sense of agency, even when facing difficult health challenges. He supports patients and their families so they stay energetically engaged with work, community, and the people they love. Outside the office, he enjoys reading, hiking, mountain biking, and time with family and friends.
Education & Training
Undergraduate
Stanford University, Bachelor of Science in Biology, 1979-1983
Medical School
Loma Linda University School of Medicine, Doctorate of Medicine, 1989
Residency
Mayo Clinic, Rochester, MN - Internal Medicine Residency and Internship, 1989-1992
Certifications
Conditions Treated
Who is Dr. Wallstrom right for?
Dr. Wallstrom is a strong fit for adults who want a long-term relationship with an experienced internist. Patients managing chronic conditions or complex health histories benefit from his thorough, individualized approach. He works well with people who want an active role in their own care. Those who value direct after-hours physician access and same-day availability will find his practice a natural fit.
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Frequently Asked Questions
Dr. Wallstrom specializes in internal medicine and preventive medicine. He focuses on comprehensive health screenings, advanced diagnostic testing, and evidence-based care. He also incorporates behavioral health techniques to support patients' overall wellness goals.
Dr. Wallstrom has practiced primary care medicine along the 210 Freeway corridor since 1993. He completed his residency at the Mayo Clinic in 1992, giving him over 30 years of clinical experience in internal medicine.
Dr. Wallstrom earned his medical degree from Loma Linda University School of Medicine in 1989. He completed his internship and internal medicine residency at the Mayo Clinic in Rochester, Minnesota, between 1989 and 1992. He holds an undergraduate degree in Biology from Stanford University.
Dr. Wallstrom has earned several honors throughout his career. Stanford recognized him with the Harold J. Hoxie Award for Outstanding Achievement and Excellence in Internal Medicine. He has also received the Patient Choice Award, Most Compassionate Doctor, Pasadena Top Doctor, and Americas Top Physician designations.
Dr. Wallstrom takes a deeply individualized approach rooted in evidence-based medicine. He treats listening as a core clinical tool and believes open conversation gives patients a sense of agency in their care. He draws on behavioral health techniques, medications, and specialist referrals to help patients reach their health goals.
Yes. Dr. Wallstrom gives members direct phone access after hours and on weekends. This means patients reach him personally, not an answering service, when urgent concerns arise outside of regular office hours.
Yes. Dr. Wallstrom holds hospital privileges at USC Verdugo Hills Hospital. He also connects patients requiring specialized care to Medical Centers of Excellence nationwide.
Dr. Wallstrom holds membership in the American College of Physicians, a leading professional organization for internal medicine specialists.
Doctor profile last updated March 21, 2026