Las Colinas Endocrinology, P.A. Find A Doctor Directions. Las Colinas Endocrinology, P.A. 1153 W John Carpenter Fwy Ste 102 Irving, TX 75039 United States (972) 253-4270. Directions. 32.892732, -96.964348. Talk to Us. ... Patient Portal (MyChart) Intranet Login ....