Patient presents with complaints of left shoulder pain, consistent with left shoulder tendinitis.  Symptoms include localized tenderness to palpation over the affected tendons, pain exacerbated by movement and activity, particularly abduction and external rotation, and stiffness.  Onset of pain is reported as gradual, with increasing severity over the past [number] weeksmonths.  Patient denies any specific trauma or injury to the shoulder.  Pain is described as [character of pain, e.g., aching, sharp, burning] and rated [pain scale rating] on a 0-10 scale.  Range of motion is limited due to pain, with notable restriction in [specific movement, e.g., forward flexion, internal rotation].  No crepitus or instability noted.  Differential diagnoses include rotator cuff tear, frozen shoulder (adhesive capsulitis), and bursitis.  Assessment suggests left shoulder tendinitis (ICD-10 M75.11) as the primary diagnosis.  Treatment plan includes rest, ice, compression, elevation (RICE), nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen for pain management, and physical therapy referral for range of motion exercises and strengthening.  Patient education provided on activity modification and proper body mechanics.  Follow-up scheduled in [duration] to assess response to treatment and adjust plan as needed.