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Trisha Fennell, MPAS, PA-C

Trisha Fennell is a Certified Physician Assistant licensed in the state of Texas.  She worked in the field of Orthopaedic Spine Surgery for her first 8 years as a Physician Assistant.  Trisha assists Dr. Diehl at Performance Orthopaedics & Sports Medicine located in Frisco, TX.

Her duties include assisting in surgery, treating patients in the office, hospital rounds, on-call coverage, as well as helping cover games and sporting events for local high schools.

Performance Orthopaedics Is Accepting New Patients

Performance Orthopaedics in Frisco is currently accepting new patients. To request an appointment, please use our convenient online scheduling system. We look forward to seeing you.

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Education & Experience

  1. Bachelor of Science in Clinical Laboratory Studies – Texas Tech University Health Sciences Center
    Lubbock, TX

  2. Masters in Physician Assistant Studies – Texas Tech University Health Sciences Center
    Midland, TX

Memberships & Professional Affiliations

  • American Academy of Physician Assistants (AAPA)
  • Texas Academy of Physician Assistants (TAPA)


National Commission of Certified Physician Assistants (NCCPA) – Current

Get to Know Trisha

Trisha currently lives in Lewisville, TX and has been married to her husband, Moss Fennell, since November 2005.  She has two beautiful children, Maddi and Wyatt, who fill up the majority of her free time outside of work.  However, in the rare moments she has time for herself, she enjoys working out, shopping, and watching the Food Network and HGTV channels.  She also enjoys spending time with family and friends as much as possible.

Wonderful Client Feedback

Dr. Diehl always listens and takes the most conservative approach for the injury rather than surgery first. He’s taken care of several of my sprains & falls. Highly recommend.


I really like Dr. Maurer. He is so down-to-earth and honest. I’ve learned to trust his advice and guidance because he cares about his patients.


Scheduling was quick, office staff was friendly and efficient and nurse and x-ray tech were friendly and thorough. Dr. Lessner was prompt and friendly. He made us feel comfortable and explained everything clearly and thoroughly.


This has been one of the best medical care experiences I’ve had, from our initial consultation to post-op visits to physical therapy. Dr. Diehl and his team are a very caring, friendly, and professional group. I had a left knee injury (meniscus and ACL tears). Thank you!!


Very impressed with Dr. Lessner. Very thorough and listened to me. He gave me multiple treatment options and involved me in the decision making. Highly recommend!


Dr. Diehl was very kind and caring. I don’t think there is a person in this office who is not professional and personable. They go above and beyond for their patients.