Marcus Sims, DO Primary Specialty: Family Practice Affiliations Family Health Center Education Board Certification American Board of Family Medicine - Family Medicine Medical School North Texas State UniversityDenton, TX Ratings 838 Ratings, 107 Comments 10/03/2026 Exceptional job , 10/03/2026 Very professional, has been my physician for 30 years and look forward to continuing. 10/03/2026 Our community of Ozona loves and trust Dr Sims and our only fear is not having him! 10/01/2026 I feel very confident when going to see Dr Sims. He will talk to me about what I need to do to help myself. He will also explain why he is prescribing meds and what he hopes the result will be. Show More