About
Dr. Daniel Graybill is an internal medicine and preventive medicine physician based in Tucson, Arizona. He earned his Bachelor of Arts in History and Sociology of Science from the University of Pennsylvania in 1981. He then pursued graduate study at Yale University, earning a Masters in Public Health and Health Services Administration in 1983. He continued his academic training at Harvard University, completing a Masters of Arts in Science in 1989. He went on to earn his Doctorate of Medicine from Tufts University in 1991. His internship took place at Kaiser Permanente in Santa Clara, California. He completed preventive medicine training at San Diego State University from 1995 to 1997 and a residency at Brown University's Miriam Hospital in Providence, Rhode Island in 1997 and 1998.
Dr. Graybill holds licenses in both Arizona and California and maintains a hospital affiliation with Tucson Medical Center. His clinical work spans more than 30 years, combining expertise in internal medicine with a strong preventive focus. He is passionate about identifying health risks early and helping patients minimize future medical problems. He joined the MDVIP network to bring personalized, relationship-driven care to a smaller panel of adult patients. Patients in his practice see him directly at every visit, not a nurse practitioner or physician assistant.
Education & Training
Undergraduate
University of Pennsylvania, Bachelor of Arts, History and Sociology of Science, 1981
Medical School
Tufts University, Doctorate of Medicine, 1991
Residency
Brown University, Miriam Hospital, Providence, RI, 1997-1998; San Diego State University, Preventive Medicine, 1995-1997
Additional Training
Yale University, Masters in Public Health and Health Services Administration, 1983; Harvard University, Masters of Arts, Science, 1989
Who is Dr. Graybill right for?
Dr. Graybill is a strong fit for adults who want a physician focused on both current health concerns and long-term prevention. Patients managing chronic conditions like hypertension, high cholesterol, or type 2 diabetes benefit from his internist background. His preventive medicine training makes him well-suited for patients who want to identify and reduce health risks before problems arise. Those who value direct, consistent access to their physician will appreciate his after-hours availability and same-or next-day appointments.
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Frequently Asked Questions
Dr. Graybill practices internal medicine and preventive medicine. He has trained and worked in both fields for more than 30 years. He focuses on addressing current medical problems and using advanced diagnostics to identify and reduce future health risks.
Dr. Graybill earned his Doctorate of Medicine from Tufts University in Boston in 1991. He completed his internship at Kaiser Permanente in Santa Clara and his preventive medicine training at San Diego State University. He finished his residency at Brown University's Miriam Hospital in Providence, Rhode Island.
Yes. Patients see Dr. Graybill directly at every office visit. He does not route patients to a nurse practitioner or physician assistant. That direct relationship is central to how he practices.
Yes. Dr. Graybill makes himself reachable by phone after hours and on weekends. Members can contact him for urgent matters without waiting for the next business day.
Dr. Graybill delivers the annual MDVIP Wellness Program, which includes comprehensive health screenings and advanced diagnostic tests. He uses the results to identify individual risk markers and build a personalized wellness plan. The annual membership fee covers this program.
Yes. Dr. Graybill can help coordinate care with a local hospital, pharmacy, or physician if a patient needs medical attention while traveling. This is one of the benefits included in MDVIP membership.
Dr. Graybill holds an affiliation with Tucson Medical Center. This affiliation supports continuity of care when patients require hospital-level services.
Dr. Graybill wanted to combine his three decades of training in internal and preventive medicine with the ability to deliver truly personalized care. The MDVIP model gives him the time and tools to focus on each patient's individual health picture rather than managing a large, rushed patient panel.
Yes. Dr. Graybill holds medical licenses in both Arizona and California. His current practice is in Tucson, Arizona.
Doctor profile last updated June 6, 2026