Dr. John Marks, MD

Colorectal Surgery •  Male • Age 56
  
Dr. Marks
Accepting new patients
100 E Lancaster Ave Wynnewood, PA 19096

Make an Appointment

(610) 645-9093

Dr. John Marks, MD is a Colorectal Surgery Specialist in Wynnewood, PA and has over 31 years of experience in the medical field. Dr. Marks has more experience with Transplant Surgery and Colorectal Surgery than other specialists in his area. He graduated from Thomas Jefferson U, Medical College medical school in 1989. He is affiliated with medical facilities Lankenau Medical Center and Paoli Hospital. He is accepting new patients. Be sure to call ahead with Dr. Marks to book an appointment.


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At a Glance

  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. See hospitals
  • Practices at Top Hospital
    Gastrointestinal Care Excellence Award™ See hospitals

Insurance Check

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Dr. Marks accepts

Accepted insurance can change. Please double-check when making an appointment.

(610) 645-9093

Dr. Marks accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
Select
Amerihealth
Personal Choice PPO
Anthem
National (BlueCard) PPO
Blue Cross Blue Shield
Blue Card PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
Cigna HMO
Cigna PPO
Open Access Plus
Geisinger Health Plan
Humana
Choice Care PPO
MultiPlan
PHCS Network PPO

Background Check

Healthgrades does not collect malpractice claims information for Pennsylvania
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Practice Areas

Transplant Surgery

Transplant surgery is a subspecialty of general surgery that focuses on replacement of damaged or diseased organs with healthy donor organs and includes partial, single or multi-organ transplant, as well as living donor organ procurement.

Typically treats 95% more than their peers

Based on claims data for 1 condition or procedure

TreatmentsTreatment Frequency
Intestinal Transplant (incl. Enterectomy)
very high
very high

Treatment Frequency

Dr. Marks performs Intestinal Transplant (incl. Enterectomy) more than 95% of their peers

Dr. Marks performs this procedure more than 95% of their peers

Colorectal Surgery

Colorectal surgery treats conditions affecting the colon and rectum, including colorectal cancer, inflammatory bowel disease, diverticulitis and hemorrhoids, through procedures such as tumor removal, colectomy, colostomy and resection.

Typically treats 83% more than their peers

Based on claims data for 6 conditions and procedures

TreatmentsTreatment Frequency
Colectomy
very high
very high

Treatment Frequency

Dr. Marks performs Colectomy more than 100% of their peers

Dr. Marks performs this procedure more than 100% of their peers

Colon and Rectal Surgery
very high
very high

Treatment Frequency

Dr. Marks performs Colon and Rectal Surgery more than 99% of their peers

Dr. Marks performs this procedure more than 99% of their peers

Intestinal Transplant (incl. Enterectomy)
very high
very high

Treatment Frequency

Dr. Marks performs Intestinal Transplant (incl. Enterectomy) more than 95% of their peers

Dr. Marks performs this procedure more than 95% of their peers

Check Dr. Marks' experience treating your condition or procedure

Dr. Marks' conditions and procedures:

  • Abdominal Disorders
  • Abscess
  • Abscess or Cyst Drainage or Aspiration
  • Abscess or Fluid Incision and Drainage
  • Anal and Rectal Cancer
  • Anal Disorders
  • Anal Fissure
  • Anal Fistula
  • Anal or Rectal Pain
  • Anal Prolapse
  • Anorectal Abscess
  • Anoscopy With Removal of Anal Tumor
  • Appendectomy, Laparoscopic
  • Appendectomy, Open
  • Cancer
  • Colectomy
  • Colectomy and Sigmoidectomy With Robotic Assistance
  • Colon and Rectal Surgery
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Cyst Incision and Drainage
  • Destruction of Anal Tumor
  • Dressing and-or Debridement of Wound, Infection, or Burn (incl. Negative Pressure Wound Therapy)
  • Enterostomy (Laparoscopic or Open)
  • Excision of Rectal Tumor
  • Fistulectomy or Fistulotomy, Anal
  • Flexible Sigmoidoscopy With Robotic Assistance
  • Gastroenterology Procedures
  • Gastrointestinal Diseases
  • Hemorrhoidectomy or Excision of Anal Tags
  • Hemorrhoids
  • Hernia Repair
  • Incision and Removal of Foreign Object
  • Inflammatory Bowel Disease
  • Intestinal Abscess
  • Intestinal Obstruction
  • Intestinal Transplant (incl. Enterectomy)
  • Laparoscopic Abdominoperineal Resection of the Rectum With Robotic Assistance
  • Laparoscopic Sigmoidectomy With Robotic Assistance
  • Laparoscopic Surgical Procedure
  • Laparotomy
  • Meckel's Diverticulum
  • Neuroendocrine Tumors
  • Open Incisional and-or Ventral Hernia Repair
  • Proctectomy, Open or Laparoscopic (incl. Swenson and Duhamel Procedures)
  • Proctosigmoidopexy With Robotic Assistance
  • Puncture Aspiration
  • Rectovaginal Fistula
  • Removal of Reproductive Organs (Hysterectomy, Oophorectomy, Salpingectomy, Salpingo-Oophorectomy, Resection of Peritoneal Malignancy)
  • Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
  • Repair of Anal and Rectal Defects (Anoplasty, Repair of Imperforate Anus, Sphincteroplasty, Rectal Graft)
  • Secondary Malignancies
  • Sphincterotomy
  • Ulcer
  • Ulcerative Colitis

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Dr. Marks' Reviews

Likelihood to recommend Dr. Marks

4.1

Based on 51 ratings

5 Stars
74.50980392156863%
(38)
4 Stars
0%
(0)
3 Stars
3.9215686274509802%
(2)
2 Stars
1.9607843137254901%
(1)
1 Star
19.607843137254903%
(10)
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I love this doctor so much he made me feel better and comfortable going for another surgery with him on July 13th for my small intestine ill be getting an ilestomy
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Amb – Jun 29, 2020
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He and his entourage come in the examination room with the arrogance of a mediocre rock star. He says hello and does the examination. They don't say anything, but his associates get in there too. They don't even ask permission to examine you, and these examinations are very personal. They just give it go after he's done. Then he gives you 30 secs of cryptic assessment and they all leave the room. So there you are, feeling disturbed by what just happened and not terribly informed. Horrid.
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Jun 16, 2020
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Awful
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Jan 13, 2020
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Dr. Marks is passionate and his oath sincere. I admire his bronze sculpture his Dad gave to him, taking off the surgical gloves. From the start, I knew! "Had fun giving him a card of thanks. It was perfect. "Thanks from the bottom of my butt." My appreciation cannot be said enough. I am here today 2 years later, Stage 1. Thank you again Dr. Marks. See you in August (?). God Bless you, your family and the staff.
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Mar 11, 2019
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Doctor Marks is the top colorectal surgeon in the world . Simply put, he saved my wife’s life eight years ago. We are forever grateful to him for what he did for us.
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Carl Evans in Collingswood , NJ – Mar 02, 2019
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Dr. Marks did my colon surgery the Monday before Thanksgiving and I had a light Thanksgiving Dinner at home that week. Average length of stay is 11 days and mine was 3. I chose Dr. Marks because he's famous for minimally invasive surgery. I felt so good that upon discharge he had to tell me 3 times "no driving, no working until after your 2 week follow-up visit, OK?" (It was like trying to negotiate with my wife - I lost and did as I was told.) Entire hospital experience was outstanding.
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Sam in Wayne, PA – Feb 13, 2019
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The best
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Bob – Jun 23, 2018
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Horrible experience at this office. Had an appointment at 2pm on Thursday, when I arrived I was told my appointment was the previous day. In preparation I had to complete 2 enamas and am 27 weeks pregnant. On Thursday evening I received a call from their automated scheduling system that I had missed my appointment scheduled for Thursday afternoon at 2pm. Obviously the staff and doctors have no care for their patients or their time. Never going here again.
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Havertown, PA – Jun 04, 2017
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Arrogant! Rude. No bed side manner. 55 year old man who needed a second opinion and he talked me down. I spoke up firmly, and his staff knew I was right. They didn't say a word and walked away.
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Norristown, PA – Jun 01, 2017
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On August 4th, I made an appt with Patricia for Sept 6th at 2pm. She provided general directions and mentioned they’re in suite 375. I scheduled a day off from work due to the long drive (1 hr 30 min one way). Around 1:50pm, I called about being a little late. To my surprise, the front desk couldn't find my appointment. They couldn’t even find my record. The front desk and office manager Krisanne were rude. Dr. Marks refused to see me b/c he was busy. Good to know he cares and values my time.
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PlzCareforPatients in Lancaster, PA – Sep 07, 2016
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Dr. Marks was recommended by our gastro doctor Dr. Lubich in south jersey . My daughter Shannon Campbell was treated with a successful surgery by your facility at Lankenau. Our entire visit was a very pleasant experience. We thank you for the care and compassion that was shown to our family. We know we were in the best hands in the world by being sent to your hospital. God bless you and your staff. Sincerely . Sue Dickinson, a very happy mother.
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Sue Dickinson in Northfield, NJ – Feb 01, 2016
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About Me

Biography

Dr. John Marks, MD is a Colorectal Surgery Specialist in Wynnewood, PA and has over 31 years of experience in the medical field. Dr. Marks has more experience with Transplant Surgery and Colorectal Surgery than other specialists in his area. He gra...Read more

Specialties

  • Colorectal Surgery

Board Certifications

  • Colon & Rectal Surgery
  • General Surgery

Education

Thomas Jefferson University Hospital
Internship Hospital
1996
U Nice Hosp
Fellowship Hospital
1994
Thomas Jefferson U
Residency Hospital
1989
Thomas Jefferson U, Medical College
Medical School

Awards

Common Questions and Answers

  • Does Dr. Marks communicate via email?

    No responses yet. What's your ?

    Yes
    (0)
    No
    (0)
  • Does Dr. Marks offer telehealth services or virtual visits?

    No responses yet. What's your ?

    Yes
    (0)
    No
    (0)
  • Does Dr. Marks offer an online patient portal?

    No responses yet. What's your ?

    Yes
    (0)
    No
    (0)
  • Does Dr. Marks have free onsite parking?

    No responses yet. What's your ?

    Yes
    (0)
    No
    (0)
  • Does Dr. Marks offer weekend visits?

    No responses yet. What's your ?

    Yes
    (0)
    No
    (0)
  • Does Dr. Marks offer evening visits?

    No responses yet. What's your ?

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    (0)
    No
    (0)

Please call the office to learn more. (610) 645-9093

Frequently Asked Questions

Is Dr. John Marks, MD accepting new patients?

Does Dr. John Marks, MD accept my insurance?

What are Dr. John Marks, MD's top areas of care?

Locations

Practice

100 E Lancaster Ave Wynnewood, PA 19096
1

Affiliated Hospitals

Check the quality of care at hospitals where Dr. Marks treats patients.

Learn more

Lankenau Medical Center

Wynnewood, PA

79% Patient experience rating, 10% higher than the national average

  • America's 250 Best Hospitals Award™ (2020, 2019, 2018)
  • America's 50 Best Hospitals Award™ (2020, 2019)
  • Outstanding Patient Experience Award™ (2020)
  • Gastrointestinal Care Excellence Award™ (2019, 2018)
  • America's 100 Best Hospitals Award™ (2018)

Paoli Hospital

Paoli, PA

83% Patient experience rating, 14% higher than the national average

  • Gastrointestinal Care Excellence Award™ (2020, 2019, 2018)
  • Outstanding Patient Experience Award™ (2020, 2019, 2018)
  • Patient Safety Excellence Award™ (2020, 2019, 2018)
  • America's 250 Best Hospitals Award™ (2019, 2018)
  • General Surgery Excellence Award™ (2018)