James Leffingwell, M.D.

Meet Dr. Leffingwell

James Leffingwell, M.D. is a seasoned ENT specialist and the founder of Cross Timbers ENT in North Texas. He is board-certified in otolaryngology by the American Board of Otolaryngology and has been in practice for over four decades. He completed his undergraduate education at Denison University and medical school at the University of Cincinnati College of Medicine. From there, he served his internship in general surgery and residency in otolaryngology at the University of Texas Medical Branch at Galveston. Today, he serves Midlothian, Mansfield, and Arlington, TX families with premier ear, nose, and throat care.

specialties and expertise

Dr. Leffingwell's areas of focus include diagnosing and treating sinus problems, nasal conditions, snoring, and sleeping disorders. He is well-versed in performing endoscopic surgery and nasal reconstruction. Additionally, Dr. Leffingwell is skilled to perform cosmetic procedures, including minimally invasive treatments, laser hair removal, skin rejuvenation, and body contouring.

professional memberships

Dr. Leffingwell is associated with the following medical organizations:

  • Texas Medical Association
  • Tarrant County Medical Society
  • American Academy of Otolaryngology-Head and Neck Surgery

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"Love Dr. Leffingwell's ENT office. Marsha did a great job getting in touch with me and scheduling my surgery. Very approachable, thorough and professional while still being warm and friendly!"



"Dr. Leffingwell was very nice and knowledgeable. I felt like he was really trying to help me find a solution. He made me feel heard and like I was in good hands. I definitely would recommend him."



"Dr. Leffingwell took his time to access my symptoms and determine next steps. A thorough exam from a thorough provider."



"So thankful & blessed for the care I received at Cross Timbers. I had been miserable for a full year with sinus & allergy problems. After surgery with Dr. Leffingwell, I can now breathe!!! I have my taste & smell & energy back. I so appreciate this caring, professional & knowledgeable doctor as well as Skye who is such an inspiration, so encouraging & kind as she works by his side. I love this awesome staff, especially Kristina & Kayla who always give quality customer service along with welcoming smiles. Thanks, Cross Timbers, for operating in the Spirit of Excellence!!! You Rock!!!"



"Great service"