Advanced in Proctitis

Dr. John Marks

General Surgery
Lankenau Medical Center
100 E Lancaster Ave, 
Wynnewood, PA 
Advanced in Proctitis
Lankenau Medical Center
100 E Lancaster Ave, 
Wynnewood, PA 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

John Marks is a General Surgeon in Wynnewood, Pennsylvania. Dr. Marks is rated as an Advanced provider by MediFind in the treatment of Proctitis. His top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Lynch Syndrome, Ileostomy, and Colostomy.

His clinical research consists of co-authoring 61 peer reviewed articles and participating in 2 clinical trials. MediFind looks at clinical research from the past 15 years.

Specialties
General Surgery
Licenses
Colon & Rectal Surgery in PA
Hospital Affiliations
Bryn Mawr Hospital
Paoli Hospital
Main Line Hospital Lankenau
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Avalon Health Care
  • MEDICARE PDP
AvMed
  • HMO
  • POS
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Capital Blue Cross
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • OTHER MEDICARE PART D
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Geisinger
  • HMO
  • POS
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Health Partners Plans
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
Highmark
  • EPO
  • HMO
  • PPO
Horizon Healthcare
  • EPO
  • POS
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Meridian Choice
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
TeamCare
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 18 Less Insurance Carriers -

Locations

Lankenau Medical Center
100 E Lancaster Ave, Wynnewood, PA 19096
Call: 610-645-9093

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

2 Clinical Trials

Multicenter Phase II Study of Transanal Total Mesorectal Excision (taTME) With Laparoscopic Assistance for Rectal Cancer
Multicenter Phase II Study of Transanal Total Mesorectal Excision (taTME) With Laparoscopic Assistance for Rectal Cancer
Enrollment Status: Active_not_recruiting
Publish Date: March 07, 2025
Intervention Type: Procedure
Study Phase: Not Applicable
Maintenance of Chemotherapy Following Neoadjuvant Chemoradiation Therapy for Distal Rectal Cancer
Maintenance of Chemotherapy Following Neoadjuvant Chemoradiation Therapy for Distal Rectal Cancer
Enrollment Status: Terminated
Publish Date: August 16, 2018
Intervention Type: Drug
Study Phase: Phase 2
View 1 Less Clinical Trial

61 Total Publications

Impact of Obesity on Postoperative Outcomes in Transanal Total Mesorectal Excision for Rectal Cancer.
Impact of Obesity on Postoperative Outcomes in Transanal Total Mesorectal Excision for Rectal Cancer.
Journal: Diseases of the colon and rectum
Published: December 11, 2025
View All 61 Publications
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Distinguished in Proctitis
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Samir Parikh is a General Surgeon in Media, Pennsylvania. Dr. Parikh is rated as an Advanced provider by MediFind in the treatment of Proctitis. His top areas of expertise are Proctitis, Rectal Prolapse, Hemorrhoids, Hemorrhoidectomy, and Colonoscopy.

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Levente Szalai is a General Surgeon in Reading, Pennsylvania. Dr. Szalai is rated as an Advanced provider by MediFind in the treatment of Proctitis. His top areas of expertise are Proctitis, Hemorrhoids, Hernia, Hemorrhoidectomy, and Hernia Surgery.

Advanced in Proctitis
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Main Line Healthcare Surgical Associates

830 Old Lancaster Rd Ste 306, 
Bryn Mawr, PA 
 (4.3 miles away)
610-647-3077
Languages Spoken:
English
See accepted insurances

Philip Pearson is a General Surgeon in Bryn Mawr, Pennsylvania. Dr. Pearson is rated as an Advanced provider by MediFind in the treatment of Proctitis. His top areas of expertise are Rectal Prolapse, Familial Colorectal Cancer, Hemorrhoids, Colostomy, and Hernia Surgery.

VIEW MORE PROCTITIS DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Marks's expertise for a condition
ConditionClose
  • Elite
  • Colorectal Cancer
    Dr. Marks is
    Elite
    . Learn about Colorectal Cancer.
    See more Colorectal Cancer experts
  • Distinguished
  • Colostomy
    Dr. Marks is
    Distinguished
    . Learn about Colostomy.
    See more Colostomy experts
  • Diverticular Disease
    Dr. Marks is
    Distinguished
    . Learn about Diverticular Disease.
    See more Diverticular Disease experts
  • Endoscopy
    Dr. Marks is
    Distinguished
    . Learn about Endoscopy.
    See more Endoscopy experts
  • Familial Colorectal Cancer
    Dr. Marks is
    Distinguished
    . Learn about Familial Colorectal Cancer.
    See more Familial Colorectal Cancer experts
  • Ileostomy
    Dr. Marks is
    Distinguished
    . Learn about Ileostomy.
    See more Ileostomy experts
  • Lynch Syndrome
    Dr. Marks is
    Distinguished
    . Learn about Lynch Syndrome.
    See more Lynch Syndrome experts
View All 7 Distinguished Conditions
  • Advanced
  • Anal Cancer
    Dr. Marks is
    Advanced
    . Learn about Anal Cancer.
    See more Anal Cancer experts
  • Bladder Reconstruction
    Dr. Marks is
    Advanced
    . Learn about Bladder Reconstruction.
    See more Bladder Reconstruction experts
  • Bowel Incontinence
    Dr. Marks is
    Advanced
    . Learn about Bowel Incontinence.
    See more Bowel Incontinence experts
  • Gastroesophageal Junction Cancer
    Dr. Marks is
    Advanced
    . Learn about Gastroesophageal Junction Cancer.
    See more Gastroesophageal Junction Cancer experts
  • Hernia Surgery
    Dr. Marks is
    Advanced
    . Learn about Hernia Surgery.
    See more Hernia Surgery experts
  • Proctitis
    Dr. Marks is
    Advanced
    . Learn about Proctitis.
    See more Proctitis experts
View All 7 Advanced Conditions
  • Experienced
  • ALK-Positive Non-Small Cell Lung Cancer
    Dr. Marks is
    Experienced
    . Learn about ALK-Positive Non-Small Cell Lung Cancer.
    See more ALK-Positive Non-Small Cell Lung Cancer experts
  • Anorectal Abscess
    Dr. Marks is
    Experienced
    . Learn about Anorectal Abscess.
    See more Anorectal Abscess experts
  • Atrial Tachycardia
    Dr. Marks is
    Experienced
    . Learn about Atrial Tachycardia.
    See more Atrial Tachycardia experts
  • Atrioventricular Nodal Reentrant Tachycardia (AVNRT)
    Dr. Marks is
    Experienced
    . Learn about Atrioventricular Nodal Reentrant Tachycardia (AVNRT).
    See more Atrioventricular Nodal Reentrant Tachycardia (AVNRT) experts
  • Colitis
    Dr. Marks is
    Experienced
    . Learn about Colitis.
    See more Colitis experts
  • Colonoscopy
    Dr. Marks is
    Experienced
    . Learn about Colonoscopy.
    See more Colonoscopy experts
View All 28 Experienced Conditions
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