I would like to express my sincere and heartfelt thanks for the wonderful and professional treatment received therein. Learn how to write an employee appreciation letter with these templates and examples.Download the template for free (PDF or Word). "I want to express my heartfelt appreciation for the care and support you have provided. Your commitment to your patients is truly admirable. I wanted to thank you for all of your hard work and dedication to your job, and specifically for the excellent care you provided for. Sending thanks to a healthcare worker is hard. We've got 86 thank you messages for nurses and doctors so saying "appreciate you" is easy. A simple yet powerful tool, these letters can express gratitude, boost morale, and improve job satisfaction. Montefiore Medical Group.