Nationally-recognized healthcare in Tomball, Texas. HCA Houston Healthcare Tomball has provided quality healthcare to Tomball, Magnolia and Northwest Houston communities since 1948. We are proudly part of Houston's largest healthcare system, HCA Houston Healthcare, and are dedicated to providing care, above all else.Find A Doctor‧Specialties‧About Us‧Contact Us‧Patients and Visitors‧Go to hcahoustonhealthcare.com.