Find a Cancer Provider

Are you a referring physician?
I am searching for a
Najjia N. Mahmoud, MD

Najjia N. Mahmoud, MD Surgeon

Chief, Division of Colon and Rectal Surgery
Associate Professor of Surgery at the Hospital of the University of Pennsylvania and the Pennsylvania Hospital
Associate Professor of Obstetrics and Gynecology

Dr. Mahmoud is a Penn Medicine employed physician.

About Dr. Najjia N. Mahmoud

Recognized annually in Philadelphia Magazine's Top Docs issue from 2010 through 2015

Recognized by Best Doctors in America 2005-2006, 2007-2008, 2009-2010, 2011-2012, 2013-2014

Clinical Specialties


  • Surgery
    • Colon and Rectal Surgery

Programs & Centers:

  • Cancer
    • Gastrointestinal Cancer Program
  • Colon and Rectal Surgery

Board Certification:

  • Colon and Rectal Surgery, 2002
  • Surgery, 2001

Clinical Expertise:

  • Anal Abscess
  • anal anastomosis - J pouch
  • Anal Cancer
  • Anal Fistula
  • anal surgery
  • Anal Warts
  • Anorectal Abscess
  • appendectomy
  • appendectomy - laparoscopic
  • Bile Duct Cancer
  • Cancer Surgery
  • colectomy
  • Colitis
  • colon biopsy
  • Colon Cancer
  • colon cancer - laparoscopy
  • Colon Fistula
  • colon polyps
  • colon polyps - laparoscopy
  • colon surgery
  • colon surgery - laparoscopic
  • Colonoscopy
  • Colorectal Surgery
  • colostomy - laparoscopic
  • condyloma
  • Crohn's Disease
  • Crohn's disease - laparoscopy
  • cutaneous fistula
  • Diverticulitis
  • diverticulitis - laparoscopy
  • endorectal ultrasound
  • enterocele repair
  • Esophageal Cancer
  • Fecal Incontinence
  • Gallbladder Cancer
  • gastrointestinal bleeding
  • Gastrointestinal Carcinoid Tumor
  • Gastrointestinal Oncology
  • Gastrointestinal Surgery
  • Gastrointestinal Tumor
  • hemorrhoid banding
  • hemorrhoid surgery
  • Hemorrhoids
  • hidradenitis
  • ileostomy - laparoscopic
  • incontinence - female
  • incontinence - male
  • inflammatory bowel disease - surgery
  • intestinal diseases
  • intestinal surgery - laparoscopic
  • J pouch
  • Laparoscopic Surgery
  • Laparoscopy
  • Liver Cancer
  • Neuroendocrine Tumors
  • Paget's Disease
  • Pancreatic Cancer
  • parastomal hernia evaluation and repair
  • pelvic floor prolapse
  • Pelvic Floor Reconstruction
  • pilonidal cyst surgery
  • Polyps
  • proctoscopy
  • rectal biopsy
  • Rectal Cancer
  • Rectal Fistula
  • Rectal Strictures
  • rectal surgery
  • rectal surgery - laparoscopic
  • rectocele repair
  • rectovaginal fistula
  • retropubic/vaginal suspensions
  • Small Intestine Cancer
  • sphincter saving surgery
  • Stomach (Gastric) Cancer
  • ulcerative colitis
  • Ventral Hernia Repair

Practice Locations and Appointments

  • Colon and Rectal Surgery

    Perelman Center for Advanced Medicine West Pavilion, 4th Floor 3400 Civic Center Boulevard Philadelphia, PA 19104 800-789-PENN (7366)

    A facility of the Hospital of the University of Pennsylvania

Insurance Accepted

  • Aetna US Healthcare
  • Cigna
  • Cigna HealthSpring
  • Devon Health Services (Americare)
  • Gateway Health Plan
  • Geisinger Health Plan
  • HealthAmerica / HealthAssurance, a Coventry Plan
  • HealthPartners
  • HealthSmart
  • Highmark Blue Shield
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana / Choicecare
  • Independence Blue Cross (Keystone East)
  • Intergroup
  • Keystone First
  • Multiplan
  • NJ Medicaid
  • NJ Qualcare
  • Oxford Health Plan
  • PA Medicaid
  • PA Medicare
  • Preferred Care
  • Rail Road Medicare / Palmetto GBA
  • Tricare
  • United Healthcare
  • UnitedHealthcare Community Plan
  • US Family Health Plan

Education and Training

Medical School: Weill Medical College of Cornell University
Residency: NewYork-Presbyterian/Weill Cornell Medical Center
Fellowship: University of Minnesota Hospitals


American Association for Cancer Research #18115, National American Association of Women Surgeons, National American Board of Colon and Rectal Surgery Key Concept Committee, National American Board of Colon and Rectal Surgery Written Examination Committee, National American Board of Colon and Rectal Surgery, National American College of Surgeons Oncology Group-5614, National American College of Surgeons, Candidate Group, #03054474, National American Medical Association, American Society of Colon and Rectal Surgeons, National Crohn’s and Colitis Foundation of America, National Halsted Society, National Onco-Link consultant, neoplastic diseases of the colon and rectum., International Society of Surgical Oncology, National Surgical Society of the Alimentary Tract, National

Hospital Affiliation

Dr. Mahmoud is a Penn Medicine employed physician.

Hospital Privileges:

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.


Selected Publications:

Stein D, Mahmoud NN, Rose D, Anne P, Goldstein S, Isenberg G, Mitchell E, Fry RD.: A Longer Time Interval Between Completion of Neoadjuvant Chemoradiation and Surgical Resection Does not Improve Downstaging of Rectal Carcinoma. Proceedings of the American Society of Colon and Rectal Surgeons : 2002.

Weyant MJ, Carothers AM, Mahmoud NN, Bradlow HL, Remotti H, Bilinski RT, Bertagnolli MM.: Reciprocal Expression of ERalpha and ERbeta is Associated with Estrogen-Mediated Modulation of Intestinal Tumorigenesis. Cancer Research 61(6) : 2547-51,2001.

Mahmoud NN, Madoff RD, Rothernberger DA, Finne CO.: TEM Reduces the Incidence of Positive Margins Compared to Transanal Excision for Rectal Tumors. Proceedings of the American Society of Colon and Rectal Surgeons : 2001.

Mahmoud NN, Carothers AM, Grunberger D, Bilinski RT, Churchill MR, Martucci C, Newmark HL, Bertagnolli MM.: Phenolic Antioxidants Decrease Intestinal Tumors in an Animal Model of Familial Adenomatous Polyposis. Carcinogenesis 21(5) : 921-927,2000.

Mahmoud NN, Bilinski RT, Churchill MR, Edelmann W, Kucherlapati R, Bertagnolli MM.: Genotype-Phenotype Correlation in Murine Apc Mutation: Differences in Enterocyte Migration and Response to Sulindac. Cancer Research 59(2) : 353-359,1999.

Mahmoud NN, Mack CA, DeCosse JJ, Michaeli J, Bertagnolli MM.: Debulking of a Gastrointestinal Hemangioma Alleviates Coagulopathy Associated with Kasabach-Merritt Syndrome. Surgery 125(2) : 236-238,1999.

Mahmoud NN, Bilinski RT, Mestre J, Martucci C, Bertagnolli MM.: Administration of an Unconjugated Bile Acid Increases Duodenal Tumors in a Murine Model of Familial Adenomatous Polyposis. Carcinogenesis 20(2) : 101-105,1999.

Carothers AM, Chiao C, Barrett JC, Mahmoud NN, Weyant MJ, Bilinski RT, Churchill MR, Grunberger D, Bertagnolli MM.: Caffeic Acid Phenethyl Ester (CAPE) Prevents Tumors in Min/+ Mice and Regulates p53 Function In Vitro. International Society of Cancer Chemoprevention, Strang International Cancer Prevention Conference, November 14, 1998; Annals of the New York Academy of Science : 1999.

Carothers AM, Weyant MJ, Mahmoud NN, Bilinski RT, Bertagnolli MM.: Estrogen modulates intestinal tumorigenesis in vitro and in vivo. Proceedings of the American Association of Cancer Research 40 : 530,1999.

Mahmoud NN, Boolbol SK, Dannenberg AJ, Mestre JR, Bilinski RT, Martucci C, Newmark HL, Chadburn A, Bertagnolli MM: The Sulfide Metabolite of Sulindac Prevents Tumors and Restores Enterocyte Apoptosis in a Murine Model of Familial Adenomatous Polyposis. Carcinogenesis 19(1) : 87-91,1998.

Academic Contact Info

Division of Colorectal Surgery - Department of Surgery
Hospital of the University of Pennsylvania
4 Silverstein Pavilion
3400 Spruce Street

Philadelphia, PA 19104
Patient appointments: 800-789-PENN (7366)

Related Links