Clinical pharmacy services (CPSs) are still in their infancy in Yemen. Furthermore, pharmacists are not members of a multidisciplinary healthcare team, so their responsibilities are limited to drug dispensing and marketing. This study examines physicians' attitudes and perceived obstacles regarding the inclusion of clinical pharmacists in hospital medical wards. A descriptive observational study was carried out using a validated, self-administered bilingual questionnaire. The study's questionnaire was conducted among physicians in three leading hospitals. Those hospitals were at the forefront of establishing clinical pharmacy units and embracing clinical pharmacy services. Data were analyzed using descriptive statistics. Sixty-five responses were included. Our data results indicated that physicians believed the most important contributions for clinical pharmacists to improve patient care were "attending medical rounds", followed by "order review". About 75% of physicians showed positive attitudes toward the clinical pharmacist role. However, more than 70% of physicians believed that clinical pharmacists should leave patient care to other healthcare professionals and focus on drug products. Not enough clinical pharmacist staff working in the health center was considered the top perceived barrier (83.1%), followed by "clinical pharmacist responsibilities were not clearly defined" and "clinical pharmacist recommendations are not properly documented". Strategies to expand clinical pharmacy services in Yemen should focus on several key areas. Protocols must be established to clearly outline the collaboration between clinical pharmacists and physicians. Additionally, fostering inter-professional relationships is crucial to overcoming resistance and increasing awareness and understanding of CPS adoption among healthcare team members.