ACS Fellow Since 2000

John H. Marks, MD, FACS

Board Certification

American Board of Colon and Rectal Surgery
American Board of Surgery - General Surgery

Society Memberships

Am Soc of Col& Rec Surg
Soc for Surg Alim Tract
Assn for Acad Surg
Soc of Surg Oncol
Soc of Am Gast End Surgs
Am Medical Association

Additional Information

Gender

Male

Colon-Rectal Surgery

100 E Lancaster Ave

Medical Science Building Suite 375

Wynnewood, PA 19096

United States

Contact Information

Phone:610-645-9093

Administrative Assistant

Name:Colleen Pechter

Email assistant

Subspecialties and Areas of Clinical Concentration

Anorectal Disease

anal abscess
anal fissure
anal fistula
anal sphincter repair
anal tears
anal warts
anorectal malformations
hemorrhoid problems
hemorrhoidal banding
IRC (infrared coagulation) for hemorrhoi
pruritus ani
rectal bleeding
rectal prolapse
recto-vaginal fistula
sphincter repair

Colon and Rectal Disorder/Procedures

colectomy
colon polyps
colon surgery
colonoscopy
colostomy
diverticular disease
diverticulitis
flexible sigmoidoscopy
ileostomy
intussusception
laparoscopic colon surgery
Meckel's diverticulum
pelvic floor dysfunction
peritonitis
pilonidal disease
removal of colon polyps
sigmoidoscopy
small bowel syndrome
surgery for diverticulitis

Colon and Rectal Cancer/Tumors

anal cancer
colon cancer screening
colon surgery
colon/rectal cancer
colonic polyps
colostomy
ileostomy
intussusception
laparoscopic colon surgery
Meckel's diverticulum
peritonitis

Gastrointestinal

Colon and Rectal Other

Vaginal-Rectal Disorders/procedures

rectocele
rectovaginal fistula

Bowel Control

bowel incontinence
constipation
diarrhea
incontinence, fecal

Inflammatory Bowel Disease

Crohn's disease
ulcerative colitis

Minimal Invasive/Endoscopic Procedures

colonoscopic polypectomy
colonoscopy
endoscopic surgery
flexible sigmoidoscopy
laparoscopic surgery for colon and recta
laser surgery
minimally invasive surgery

Hospital Appointments

Lankenau Hospital

Attending

Academic Appointments

Lankenau Institute for Medical Research

Professor

Hahnemann

Clinical Assistant Professor

University of Nice, France

Adjunct Professor

09/2011—Present