Alexandra H. Weiss, MD

Gastroenterology
Accepting new patients
Sees patients age 18 and up
Penn Digestive and Liver Health Center University City
Make an appointmentCall 800-789-7366
Headshot of Alexandra H. Weiss, MD
Penn Medicine Provider

About me

  • Assistant Professor of Clinical Medicine (Gastroenterology)

My education and training

  • Medical School: Howard University College of Medicine
  • Residency: Temple University Hospital
  • Fellowship: Cooper University Hospital

Spoken languages

English
English

Reviews

Average Rating

454 reviews

Comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Penn Medicine.

Anonymous
July 2026
good professional care
Anonymous
July 2026
dr weiss is an excellent diagnostician and a caring compassionate doctor the best
Anonymous
July 2026
through
Anonymous
June 2026
dr weiss is an expert in her field who cares about her patients and takes the time to thoroughly diagnose, treat, and advise her patients on their specific condition and needs. she is highly educated, experienced and talented within her field. while dr weiss is an intelligent, talented and very capable medical professional, she recognizes that she is dealing with human beings who are vulnerable and many times scared due to their medical problems. dr weiss exemplifies professionalism, intelligence, empathy and compassion in her interactions with patients and that means so much when choosing a provider to care for you, treat you, and manage diseases moving forward. i completely trust dr weiss and admire her ability to be both an exemplary physician specialist without losing her humanity.

Insurance accepted

Please contact the practice and/or the member services department of your insurance company for specific details before receiving services. Providers may participate in some, but not all, products offered by a health plan; providers may also accept plans at some practice locations but not others.

Locations

Penn Medicine hospital privileges

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.
Dr. Weiss is a Penn Medicine physician.

Qualifications and experience

Treatments and conditions

Research

Publications

Alexandra Weiss MD, Edward L Barnes MD MPH, Meenakshi Bewtra MD PhD MPH A Practical Guide to the Use of Upadacitinib in Ulcerative Colitis and Crohn's disease , American Journal of Gastroenterology: 2024

James D Lewis, Lauren E Parlett, Michele L Jonsson Funk, Colleen Brensinger, Virginia Pate, Qufei Wu, Ghadeer K Dawwas, Alexandra Weiss, Brad D Constant, Maureen McCauley, Kevin Haynes, Jeff Yufeng Yang, Douglas E Schaubel, Andres Hurtado-Lorenzo, Michael David Kappelman Incidence, Prevalence, and Racial and Ethnic Distribution of Inflammatory Bowel Disease in the United States , Gastroenterology : 2023

Thanawala S, Weiss AH, Weber A, Tang H, Buchner A. The role of liver transplant in the development of colorectal dysplasia in patients with PSC-IBD. (Poster Presentation) , DDW: 2023

Weiss AH, Thanawala S, Tang H, Weber A, Buchner A. Severity of inflammation as a risk factor for the development of colorectal dysplasia in PSC-IBD. (Poster Presentation) , DDW: 2023

Khan N, Pernes T, Weiss A, Trivedi C, Patel M, Medvedeva E, Xie D, Yang YX Efficacy of Vedolizumab in a nationwide cohort of elderly inflammatory bowel disease patients , Inflammatory Bowel Diseases : 2022

Weiss, A.H. and Buchner, A.M Editorial: colorectal cancer in elderly-onset inflammatory bowel disease—what is the risk? , Aliment Pharmacol Ther, 56(9): 2022,1421-1422

Mahmud N, Weiss A, Trivedi C, Yang YXm Lewis J, Khan N Risk of venous thromboembolism among patients with inflammatory bowel disease who contract severe acute respiratory syndrome Coronavirus 2 , Gastroenterology, 161: 2021

Weiss AH, Trivedi C, Pernes T, Patel M, Khan N. Efficacy of vedolizumab in a nationwide cohort of elderly inflammatory bowel disease patients. (Poster Presentation) , DDW : 2021

Weiss AH, Bhattacharya A, Ellison S, Osterman MT, Lichtenstein G Lower Adalimumab trough levels are associated with higher risk of infectious complications in patients with IBD , DDW : 2021

Weiss AH, Trivedi C, Pernes T, Patel M, Khan N Incidence of infections and malignancy among elderly IBD patients exposed to vedolizumab, prednisone and mesalamine (Poster Presentation) , DDW : 2021