Introduction: A physician in a chronic pain treatment clinic must recognize that the relationship between pain and spirituality is bidirectional. Chronic pain can decrease the level of spiritual well-being, and low spiritual well-being can also significantly intensify the perception of pain and worsen coping with it. Currently, for many scientific and medical communities, it is evident that spiritual care is an indispensable element of holistic medicine. Objective: The authors developed a non-religious spiritual care model provided by a physician at a chronic pain treatment clinic from May 2022 to February 2024. Method: The study utilized a mixed-method approach to conduct the research. The analysis consisted of twelve patients. A FACIT-Sp-12 questionnaire evaluated the individual's spiritual well-being before the intervention. The intervention involved asking patients open-ended questions about their life history, experiences, and spiritual beliefs and the physician's use of active listening and empathetic responses to what patients shared (relationship-building activities). The intervention aimed to assist patients in accepting the limitations of an incurable chronic disease, affirming the value of their lives, enhancing inner harmony, and increasing their sense of belonging to something greater. After the intervention, a re-assessment of the patient's spiritual well-being was conducted using the FACIT-Sp-12 questionnaire. Researchers collected qualitative data through a confidential survey that included the following instructions: "Please express an anonymous opinion on how you perceive the spiritual care provided by the physician". Results: There was an increase in spiritual well-being, assessed using the FACIT-Sp-12 scale, in 9 out of 12 patients. The median, as well as the average, level of spiritual well-being increased in a statistically significant way after the intervention (p < 0.05). This was primarily due to the higher value of the peace subscale of the questionnaire. Qualitative analysis revealed benefits reported by patients (personal development, gratitude, satisfaction, support, hope) resulting from physician's actions. Conclusions: Both qualitative and quantitative data showed that establishing a relationship with the doctor improves the spiritual well-being of patients. Therefore, this model can be recommended for physicians in chronic pain treatment clinics.