About
Daniel Rosen, MD is a board-certified internal medicine physician and the founder of Calabasas Medicine in Calabasas, California. He holds board certification in Internal Medicine and specializes in both adult outpatient and hospital medicine. His patient range spans ages 15 to 100, from adolescents to elderly adults. He manages common and complex illnesses with equal care and attention.
Dr. Rosen organizes each patient's care around prevention and lifestyle first, then medication when needed. He uses the most advanced diagnostic tools available and recommends the least invasive options before escalating treatment. His chronic disease work covers diabetes, high blood pressure, heart disease, obesity, thyroid disorders, migraines, arthritis, asthma, COPD, and more. Patients and colleagues alike recognize his warmth, depth of knowledge, and genuine commitment to each person he treats. LA Magazine and SuperDoctors have both recognized him with top doctor honors.
Education & Training
Board Certified Internal Medicine
Certifications
Conditions Treated
Who is Dr. Rosen right for?
Dr. Rosen serves adults from age 15 through 100 who want a primary care doctor who knows them well. Patients managing chronic conditions like diabetes, hypertension, thyroid disorders, or heart disease benefit from his hands-on, prevention-first approach. Busy professionals appreciate his early morning, evening, and same-day scheduling. Patients with limited mobility or transportation needs can take advantage of his house call option. Those who value direct 24/7 physician access and unhurried appointments will feel at home in his practice.
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Frequently Asked Questions
Dr. Rosen treats a broad range of adult conditions, both acute and chronic. His chronic disease focus includes diabetes, high blood pressure, heart disease, obesity, thyroid disorders, hormone imbalances, high cholesterol, migraines, arthritis, asthma, COPD, Crohn's disease, and chronic pain. He also manages general internal medicine needs across all stages of adult life.
Dr. Rosen sees patients from age 15 to 100. His training in adult outpatient and hospital medicine equips him to care for adolescents, young adults, middle-aged patients, and elderly patients alike.
Yes. Dr. Rosen holds board certification in Internal Medicine. He applies that training across a wide spectrum of adult conditions, with a strong emphasis on prevention and chronic disease management.
Dr. Rosen builds each care plan around prevention and lifestyle changes first. He recommends the least invasive options before turning to medications. He uses advanced diagnostic tools to guide his decisions and focuses on treating the whole patient rather than isolated symptoms.
Yes. Dr. Rosen offers house calls for patients with limited mobility, lack of transportation, or scheduling constraints. House calls carry an additional fee beyond the standard membership rate.
Yes. Dr. Rosen gives members direct 24/7 access. Patients can contact him with urgent questions or concerns outside of standard office hours without going through a call center or on-call service.
Yes. Dr. Rosen has earned both the SuperDoctors Badge and the LA Magazine Top Doctors recognition. Patients consistently rate him highly across Healthgrades, Google, and Yelp for his knowledge, warmth, and thoroughness.
Yes. Dr. Rosen personally oversees his patients' hospitalizations. Members do not lose continuity of care when they require inpatient treatment.
Doctor profile last updated June 9, 2026