Dr. Mark Gilder, MD

Dr. Mark Gilder, MD

Colorectal SurgeryMale

Colorectal Surgery

Dr. Mark Gilder, MD is a Colorectal Surgery Specialist in Livingston, NJ. He is affiliated with Cooperman Barnabas Medical Center, winner of the Gastrointestinal Surgery Excellence Award and others. He is also affiliated with Morristown Medical Center. His office accepts new patients.

Office Hours

200 S Orange Ave Ste 232 Livingston, NJ 7039


9 am
5 pm






9 am
5 pm


9 am
5 pm




9 am
5 pm
Connect with a call center representative 24/7 to request an appointment.


Associates in Colon Rectal Diseases P A

Associates In Colon Rectal Dis200 S Orange Ave Ste 232 Livingston, NJ 7039
  • Call
  • Fax
  • Hours
    • Mon: 9:00am - 5:00pm
    • Tue: 9:00am - 5:00pm
    • Wed: closed
    • Thu: 9:00am - 5:00pm
    • Fri: 9:00am - 5:00pm
    • Sat: closed
    • Sun: closed
  • Directions

At a Glance

  • Practices at Top Hospital Gastrointestinal Care Excellence Award™ See hospitals
  • Hospital Satisfaction Patients said they were highly satisfied at this doctor's hospital. See hospitals

More Colon & Rectal Surgery Specialists at Cooperman Barnabas Medical Center

Dr. Gilder's Reviews

Likelihood to recommend Dr. Gilder


Based on 14 ratings

5 Stars
4 Stars
3 Stars
2 Stars
1 Star
healthgrades logo

Leave a review

How likely are you to recommend
Dr. Gilder
What went well
No reviews yet
What could be improved
No reviews yet

Your trust is our top concern.

We strive to keep the reviews trustworthy, honest & fair.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

RecentHighestLowestMost Helpful
If you are trying to find a colorectal doctor, please do not look any farther. You found him! I am about to celebrate 10 years NED because of Dr. Gilder. When diagnosed with Stage IIIa colon cancer at the age of 41, he performed a sub-total colectomy. Was out of the hospital in 2.5 days. Other than what is to be expected post-surgery, I have lived a vibrant, healthy, active life because of Dr. Gilder (and my entire medical team). He was so concerned about my family history of Lynch Syndrome that the decision to remove all of my colon was an easy one. I cannot say enough about how kind and caring he is. Best to you!
Christina Thompson – Sep 02, 2021
×Post a ResponseAre you Dr. Mark Gilder, MD?
I thought Dr. Gilder was both professional and friendly. He explained everything about the procedure I was undergoing beforehand and stopped by my bedside in recovery to go over this findings. I would definitely recommend him.
May 16, 2019
×Post a ResponseAre you Dr. Mark Gilder, MD?
Doctor Gilder is not only a brilliant surgeon but a respectful partner in my health care. I felt very comfortable speaking with him, never feeling rushed. I can't imagine anyone being more professional.
Apr 12, 2019
×Post a ResponseAre you Dr. Mark Gilder, MD?
Yes I saw Dr. Gilder in 2014 he removed some lesions from my rectum he is an excellent Dr.
8 people found this helpful
East Orange, NJ – Apr 06, 2017
×Post a ResponseAre you Dr. Mark Gilder, MD?
I had very acute prolapsed hemmoroids, and Doctor Gilder provided me with the relief that I had been putting off for over 10 years. I liked that he was very direct and candid about the pain I would be experiencing post surgery. He didn't "sugarcoat" or brush over the discomfort I would be feeling. I think this helped me to mentally prepare myself for the recovery, which took about 2 weeks as a whole. In my pre surgery and post surgery appointments, he was always very attentive.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
7 people found this helpful
Andrew in Madison, NJ – Oct 07, 2016
×Post a ResponseAre you Dr. Mark Gilder, MD?

Leave a review

How was your experience with Dr. Gilder?

Is this your profile?

Respond to reviews, add information, and reach more patients. Claiming is free and only takes a minute.

Claim your profile

Experience and Background Checks


Background Check

No malpractice claims found for New Jersey
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

Experience Check

Check Dr. Gilder's experience treating your condition or procedure

Dr. Gilder's Top Procedures and Conditions

Treatment Frequency
Anal or Rectal Pain
very high
very high

Treatment Frequency

Dr. Gilder treats Anal or Rectal Pain more than 99% of his peers

Dr. Gilder treats this condition more than 99% of his peers

very high
very high

Treatment Frequency

Dr. Gilder performs Colectomy more than 99% of his peers

Dr. Gilder performs this procedure more than 99% of his peers

Rating Includes other areas of care:

  • da Vinci® Colectomy
  • Hemicolectomy
  • Laparoscopic Colectomy
very high
very high

Treatment Frequency

Dr. Gilder treats Hemorrhoids more than 91% of his peers

Dr. Gilder treats this condition more than 91% of his peers

Dr. Gilder's conditions and procedures:

  • Abdominal Procedure
  • Abscess or Cyst Drainage or Aspiration
  • Abscess or Fluid Incision and Drainage
  • Anal and Rectal Cancer
  • Anal Fissure
  • Anal Fistula
  • Anal or Rectal Pain
  • Anal Prolapse
  • Anorectal Abscess
  • Anorectal Surgery
  • Anoscopy
  • Anoscopy With Removal of Anal Tumor
  • Appendectomy, Laparoscopic
  • Appendectomy, Open
  • Colectomy
  • Colectomy and Sigmoidectomy With Robotic Assistance
  • Colon and Rectal Surgery
  • Colon Polyp
  • Colonoscopy
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • da Vinci® Colectomy
  • Destruction of Anal Tumor
  • Dressing and-or Debridement of Wound, Infection, or Burn (incl. Negative Pressure Wound Therapy)
  • Endoscopy
  • Enterostomy (Laparoscopic or Open)
  • Excision of Rectal Tumor
  • Fecal Impaction Removal
  • Fistula Repair
  • Fistulectomy or Fistulotomy, Anal
  • Flexible Sigmoidoscopy With Robotic Assistance
  • Gastroenterology Procedures
  • Hemicolectomy
  • Hemorrhoid Removal
  • Hemorrhoidectomy or Excision of Anal Tags
  • Hemorrhoids
  • Hernia Repair
  • Incisional Hernia Repair, Laparoscopic
  • Inflammatory Bowel Disease
  • Intestinal Abscess
  • Intestinal Obstruction
  • Intestinal Transplant (incl. Enterectomy)
  • Laparoscopic Abdominoperineal Resection of the Rectum With Robotic Assistance
  • Laparoscopic Colectomy
  • Laparoscopic Excision or Destruction of Ovary With Robotic Assistance
  • Laparoscopic Sigmoidectomy With Robotic Assistance
  • Laparoscopic Surgical Procedure
  • Laparotomy
  • Neoplasm of Gastrointestinal Tract
  • Neuroendocrine Tumors
  • Open Incisional and-or Ventral Hernia Repair
  • Pelvic Abscess
  • Polypectomy
  • Polyps
  • Proctectomy, Open or Laparoscopic (incl. Swenson and Duhamel Procedures)
  • Proctosigmoidopexy With Robotic Assistance
  • 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
  • Stent-Assisted Carotid Angioplasty
  • Transendoscopic Stent Placement
  • Ulcerative Colitis
  • Vein Ablation
  • Video-Assisted Thoracoscopic (VATS) Lobectomy

Insurance Check

Search for your insurance provider

Dr. Gilder accepts

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

(973) 891-2848

Dr. Gilder accepts the following insurance:

Aetna HMO
Choice Plus POS II
Amerigroup (Wellpoint)
Personal Choice PPO
National (BlueCard) PPO
Blue Cross Blue Shield
Blue Card PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna PPO
Great West Healthcare-Cigna
Open Access Plus
Emblem Health
Empire Blue Cross Blue Shield
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Harvard Pilgrim Health Care
Harvard Pilgrim Health Care PPO
MultiPlan PPO
QualCare HMO
QualCare PPO

About Me

Care Philosophy

Our goal is to provide the best and most contemporary surgical services available Patients are actively involved and participate in their management throughout...Read more


  • Colorectal Surgery

Board Certifications


North Shore University Hospital-Manhasset (New York)
Residency Hospital
Saint Francis Hospital and Medical Center
Fellowship Hospital
North Shore University Hospital
Internship Hospital


Frequently Asked Questions

How can I make an appointment with Dr. Mark Gilder, MD?

Click here to schedule an appointment online. New patients can also call (973) 891-2848.

Is Dr. Mark Gilder, MD accepting new patients?

Dr. Mark Gilder, MD generally accepts new patients on Healthgrades. You can see Dr. Gilder's profile to make an appointment.

Does Dr. Mark Gilder, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Gilder accepts your insurance.

What are Dr. Mark Gilder, MD's top areas of care?

Dr. Gilder frequently treats Anal or Rectal Pain, Colectomy, and Hemorrhoids. See all procedures and conditions Dr. Gilder treats.

Where is Dr. Mark Gilder, MD's office located?

Dr. Gilder's office is located at 200 S Orange Ave Ste 232, Livingston, NJ 7039. Find other locations and directions on Healthgrades.

Does Dr. Mark Gilder, MD offer telehealth services?

Dr. Gilder has not yet indicated whether they offer telehealth services. Please contact the office to check for availability/eligibility.

Affiliated Hospitals

Dr. Gilder is affiliated with the following hospitals. Select a hospital below to learn more.

Learn more about how Healthgrades measuresHospital Quality.

Cooperman Barnabas Medical Center

Livingston, NJ

76% Patients that would definitely recommend, 6% higher than the national average

11 Awards Received

Award Highlight: Gastrointestinal Surgery Excellence Award™ (2022)

Jersey City Medical Center

Jersey City, NJ

65% Patients that would definitely recommend, 5% lower than the national average

3 Awards Received

Jersey City Medical Center

Jersey City, NJ

65% Patients that would definitely recommend, 5% lower than the national average

3 Awards Received

Morristown Medical Center

Morristown, NJ

84% Patients that would definitely recommend, 14% higher than the national average

30 Awards Received

Award Highlight: Gastrointestinal Care Excellence Award™ (2022)

Overlook Medical Center

Summit, NJ

73% Patients that would definitely recommend, 3% higher than the national average

33 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2022)