OBJECTIVE: The CombiConsultation is an innovative concise clinical pharmacy service by the community pharmacist for patients with a chronic condition. We aimed to identify relevant factors influencing the implementation of the CombiConsultation in Dutch clinical practice. METHODS: A mixed-methods study involving interviews and a questionnaire. Content analysis topics within TDF domains were derived from the interview data and were related to the COM-B-model (capability-opportunity-motivation-Behaviour). The relevance of the resulting topics was explored using a questionnaire with 19 statements administered to all 27 pharmacists who performed CombiConsultations. KEY FINDINGS: Eighteen topics emerged from the interviews. The questionnaire was completed by 23 of the 27 pharmacists. In the domain 'capability', a small number of participants indicated that they need more expertise in pharmacotherapy (13%) and training in consultation skills (35%). In the domain 'opportunity', all participants indicated that an existing good collaboration with the general practitioner/practice nurse and access to all relevant medical data were necessary to implement the CombiConsultation. In terms of motivation, job satisfaction was most important to all participants, followed by adequate reimbursement (83%) and improving collaboration with other healthcare providers and the relationship with patients (78%). CONCLUSIONS: Capability, opportunity, and motivation were all considered relevant for the implementation of the CombiConsultation. There were crucial factors on the level of the individual pharmacist, on the level of the local collaboration and organization, and on the health system level.