Maria Spassova Altieri, MD, MS
Bariatric Surgery, Gastrointestinal Surgery, General Surgery
Accepting new patients
Sees patients age 18 and up
Penn Gastrointestinal Surgery Washington Square
View 2 additional locations
Schedule onlineCall 215-829-8455
Penn Medicine Provider

About me

  • Section Chief, GI Surgery at Pennsylvania Hospital
  • Associate Professor of Clinical Surgery

Education and training

  • Medical School: George Washington University
  • Residency: Stony Brook University Hospital
  • Fellowship: Washington University School of Medicine

What my patients think about me

Average Rating

352 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.

November 2025
she met my expectations.
November 2025
explained things well
October 2025
pleasant and informative
October 2025
made me feel important and understood my anxiousness

Insurance accepted

My 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. Altieri is a Penn Medicine physician.

Qualifications and experience

Treatments and Conditions

My research

Ye J Interview with editorial board members , Annals of Laparoscopic and Endoscopic Surgery: 2025 (in press)

Marroquin E, Fernández-Alonso M, Bejarano B, Creel DB, Kohl HW, Messiah SE, Altieri MS, Papasavas P, Horn C Physical activity recommendations for metabolic and bariatric surgery patients: A systematic review of randomized controlled trials , Surgery for Obesity & Related Disorders: 2025 (accepted for publication)

Altieri M Invited Commentary on "A Systematic Review and Meta-Analysis of Factors Associated with Esophageal Stent Migration and a Comparison of Anti-Migration Techniques" , Journal of Gastrointestinal Surgery: 2025 (accepted for publication)

Jalloh K, Bader A, Okorji LM, Kelz R, Tatarian T, Altieri M Gender gap in surgical societies awards , Surgical Endoscopy: 2025 (accepted for publication)

Rosen CB, Altieri MS Obesity medications , SCORE Portal: 2025

Baldwin D, Ali AM, Altieri MS, DeMaria EJ Marginal ulceration after Roux-en-Y gastric bypass - Literature review and management algorithm , Metabolism & Target Organ Damage: 2024 (accepted for publication)

Gershuni V, Wall-Weiler E, Liu Y, Feibi Z, Altieri MS A study protocol for an observational cohort investigating health outcomes and healthcare costs after metabolic and bariatric surgery , BMJ Open: 2024 (accepted for publication)

Jureller M, Jeyarajah DR, Hassan I, Altieri MS, On behalf of the Society for Surgery of the Alimentary Tract Complex Gastrointestinal Fellowship Committee The impact of fellowship training on current practice patterns and the job market: A survey of Fellowship Council graduates , Journal of Gastrointestinal Surgery: 2024 (Epub)

Fernandez-Alonso M, Bejarano G, Creel DB, Kohl HW, Messiah SE, Altieri MS, Papasavas P, Horn C, Marroquin E Expert-based physical activity guidelines for metabolic and bariatric surgery patients: A systematic review of randomized controlled trials , Surgery for Obesity & Related Disorders: 2024 (Epub)

St John A, Khalid MU, Masino C, Noroozi M, Alseidi A, Hashimoto DA, Altieri M, Serrot F, Kersten-Oertel M, Madani A Correction: LapBot-Safe Chole: Validation of an artificial intelligence-powered mobile game app to teach safe cholecystectomy , Surgical Endoscopy: 2024 (Epub)