• Dr. Maddala has been awarded as THE BEST Gastroenterologist in McKinney, Allen, Prosper and Celina by Living Magazine for the year 2020

  • Best Doctor in Collin County “D Magazine” 2020

  • Best Doctor in Collin County “D Magazine” 2019

  • Best Doctor in Collin County and Dallas “D Magazine” 2018

  • Best Doctor in Collin County and Dallas “D Magazine” 2017

  • Best Doctor in Collin County and Dallas “D Magazine” 2015 – 2016



  • Oral Presentation of an abstract “Cumulative Drop Out From the UNOS Waiting List for Patients with Hepatocellular Carcinoma (HCC): Implications for Organ Allocation Policy for the American Transplant Congress meeting, May 2003
  • Oral Presentation of the abstract : Primary Biliary Cirrhosis-Role of Chlamydia & treatment with Tetracyline at NACGF(North American Conference for Gastroenterology Fellows) 2004
  • Poster Presentation (two) at the ACG Meeting, 2004:

              1. Small Bowel Volvulus: Unusual Presentation of Progressive Systemic Sclerosis

              2. Endoscopic Biopsy Negative Esophageal Metastasis-Diagnosis by Endoscopic Ultrasound

  • Awarded  First Prize at the Research Day Competition held at Allegheny General Hospital 2004
  • National Talent Search Scholarship, National Council for Educational Research and Training, NCERT, India. 1990-1994


  • Open-label pilot study of tetracycline in the treatment of primary biliary cirrhosis. American Journal of Gastroenterology. 2004 March; 99(3):566-7
  • Drop-out rates of patients with hepatocellular cancer listed for liver transplantation: outcome with chemoembolization. Liver Transplant. 2004 March; 10(3):449-55

Former Appointments

  • Instructor of Medicine at the Mayo Medical School, Rochester, Minnesota
  • Member of the Institutional Research Review Board – Atlantic Health System, NJ
  • Clinical Assistant Instructor- Department of Medicine, SUNY Health Science Center at Syracuse, NY