Background: The MD care model is recommended to improve the quality of lung cancer care, which is complex and involves multiple specialties. Physicians’ feedback on the management of lung cancer care is essential to improve the quality of care for lung cancer patients. Methods: We conducted focus groups with lung cancer specialists (pulmonologists, surgeons, medical oncologists, radiation oncologists, primary care physicians, hospitalists, and ER doctors) from both multidisciplinary and traditional clinical settings. Grounded Theory methodology guided the identification of recurrent themes that emerged from qualitative data analysis using Dedoose software. Results: 37 physicians participated in 9 focus groups. Almost all physicians agreed that the MD model could be beneficial for patients in terms of receiving high quality, efficient, and well-coordinated care. However, many felt that co-location was not an optimal use of their time and resources. Financial disincentives and time constraints were identified as major deterrents to full participation in a MD clinic. Several physicians were concerned that a MD clinic could compromise their referral base, and impact their own practice. Another perceived barrier was the challenge of integrating a MD care model into the existing health care system, which may not be positioned to provide co-located services efficiently. The team-based approach of MD care raised some uncertainty about who would be designated as the primary physician responsible for a patient’s care, and make final decisions about treatment. Suggested ways to improve implementation of the MD model included educating physicians about the availability of an MD clinic, establishing efficient processes for initial consultations, implementing technology for virtual participation, and using a nurse navigator with reliable closed-loop communication. Conclusions: Physicians generally agreed that the multidisciplinary model could improve lung cancer care, but they perceived significant personal, institutional, and system level barriers that need to be addressed in order to implement a MD system in a community healthcare setting succesfully.