Georgios Karagkounis

Georgios Karagkounis, MD

Colorectal Surgeon

My Role at MSK

Areas of Expertise

My Specialties

  • Colorectal Cancer
  • Peritoneal Metastasis
  • Peritoneal Surface Malignancies

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About Me

What I Do at MSK
  • Assistant Attending Surgeon
Get To Know Me

As a cancer surgeon, I care for people with gastrointestinal and abdominal tumors, including:

In addition, I have a special interest in cancer that has spread within the abdominal cavity (known as “peritoneal metastasis” or “peritoneal carcinomatosis”). Although peritoneal metastasis is a late and serious manifestation of abdominal cancer, we have options to treat it.

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I have expertise in performing cytoreductive surgery for people with peritoneal metastasis. We use this type of surgery to remove all of the cancer from the abdominal cavity. In appropriate cases, we give chemotherapy during the procedure (in the operating room) or during recovery; this treatment is called intraperitoneal chemotherapy. Cytoreductive surgery removes all visible cancer areas while the chemotherapy intends to kill any remaining microscopic ones that cannot be seen.

I also use minimally invasive surgical approaches whenever it is safe to do so. This includes laparoscopy and robotic surgery.

My decision to dedicate my life to cancer surgery, with an emphasis on colorectal cancer, comes from a family history of the disease. Seeing colorectal cancer affect my loved ones firsthand motivated me to make a difference in the lives of people with it. I was also inspired to focus on colorectal cancer because of how common it is. There is nothing more gratifying for me than being able to help people with cancer while trying to develop new and better ways to treat it.

Fortunately, colorectal cancer care is evolving rapidly and has changed tremendously in recent decades. We now have more treatment options than ever before, and in some cases, we can even activate a patient’s immune system to attack the cancer (immunotherapy). At the same time, the field of colorectal cancer is learning more about when we can safely spare patients other treatments that can be hard on the body, like radiation and surgery. These advancements hold promise for people with this disease.

Because colorectal cancer can require different types of treatments beyond surgery, I work closely with medical oncologists, radiation oncologists, and other experts at Memorial Sloan Kettering Cancer Center (MSK). We listen to what each of our patients wants and needs out of their care. Then, we create treatment plans that honor these preferences while getting them the best possible results.

Most of the people I see are still working through the anxiety and fear of a new cancer diagnosis. We all want to know what the future holds, and it is natural to look for long-term answers in times of stress. When I meet with patients, I emphasize the importance of taking everything one step and one decision at a time.

I also encourage my patients to talk openly about their concerns. I understand and respect that everyone deals with cancer differently, and I recognize that some of the worry that patients and their loved ones may feel is not about the diagnosis itself, but rather about another related stressor. We may have an easy solution for some of these concerns.

My research focuses on understanding why some tumors spread in the abdominal cavity while others do not, and how to treat the ones that do. I have a lab at MSK that focuses on learning about these mechanisms in colon and appendix cancer and developing new treatments for these diseases.

When I am not working, I enjoy traveling with my wife and two daughters and cherish our trips to see their grandparents in Europe. I also love watching and playing soccer, cooking (particularly Greek cuisine), and reading non-fiction books on history or mystery fiction novels.

My Role at MSK

A colorectal (KOH-loh-REK-tul) surgeon is a doctor with special training in surgery on the colon and rectum.

Areas of Expertise

My Specialties

  • Colorectal Cancer
  • Peritoneal Metastasis
  • Peritoneal Surface Malignancies
  • Peritoneal Mesothelioma
  • Colon Cancer
  • Rectal Cancer
  • Anal Cancer
  • Appendeceal Cancer
  • Cytoreductive Surgery
Education & Honors

Education

  • MD, University of Athens School of Medicine

Residencies

  • General Surgery, Cleveland Clinic

Awards and Honors

  • Society of Surgical Oncology Young Investigator Award (2022)
  • "Steiger Award" for Significant Research Contribution, Cleveland Clinic (2019)
  • Excellence in Teaching Award, Cleveland Clinic (2018, 2017, 2016)
  • Research Forum Works in Progress Award, American Society of Colon & Rectal Surgeons (2017)
  • Best Paper Award, American Society of Colon & Rectal Surgeons (2016)
  • Career Development Award, Society of American Gastrointestinal & Endoscopic Surgeons (2015)

Fellowships

  • Surgical Oncology Research, The Johns Hopkins University School of Medicine
  • Colorectal Surgery Research, Cleveland Clinic
  • Complex General Surgical Oncology, Memorial Sloan Kettering Cancer Center

Board Certifications

  • Surgery
  • Complex General Surgical Oncology

Insurance Information

Understanding your insurance options is an important part of managing your cancer care. We have relationships with many common healthcare providers and plans.

Aetna

In Network Coverage Type
HMO, EPO PPO, POS, Transplant

Aetna Medicare Advantage (MTA retirees only)

In Network Coverage Type
PPO

Blue Cross Blue Shield Federal Employee Program

In Network Coverage Type
HMO, PPO

Blue Cross Blue Shield New York

In Network Coverage Type
PPO, POS, EPO, HMO

Blue Cross Blue Shield states outside of NY/NJ

In Network Coverage Type
HMO, EPO PPO, POS

Blue Cross Health Plus

In Network Coverage Type
HMO

Carrum Health

In Network Coverage Type
Supplemental

Cigna

In Network Coverage Type
PPO, POS, HMO

MSK has a tentative agreement with Cigna to continue coverage in 2024.

Connecticare

In Network Coverage Type
POS, EPO, HMO

Emblem

In Network Coverage Type
PPO, POS, EPO, HMO

Offers a qualified health plan from the Health Insurance Marketplace. Call Emblem to learn more.

Emblem Essential

In Network Coverage Type
HMO

Emblem Medicare Advantage

In Network Coverage Type
PPO, HMO

Empire Blue Cross Medicare Advantage

In Network Coverage Type
PPO, HMO, DSN

Empire Essential

In Network Coverage Type
HMO

Empire Plan / NYSHIP (Blue Cross/UnitedHealthcare split plan)

In Network Coverage Type
PPO

Fidelis

In Network Coverage Type
HMO, EPO

Offers a qualified health plan from the Health Insurance Marketplace. Call Fidelis to learn more.

Fidelis Managed Medicaid & HARP

In Network Coverage Type
HMO

Fidelis Medicare Advantage

In Network Coverage Type
HMO

First Health

In Network Coverage Type
PPO

Healthfirst

In Network Coverage Type
EPO, HMO, PPO, POS

Offers a qualified health plan from the Health Insurance Marketplace. Call Healthfirst to learn more.

Healthfirst Managed Medicaid

In Network Coverage Type
HMO

Healthfirst Medicare Advantage

In Network Coverage Type
HMO, PPO

Healthsmart

In Network Coverage Type
PPO EPO

Horizon Blue Cross Blue Shield New Jersey (HMO)

In Network Coverage Type
HMO

Horizon Blue Cross Blue Shield New Jersey (PPO)

In Network Coverage Type
PPO

Horizon Blue Cross Blue Shield New Jersey Omnia Tier I (EPO)

In Network Coverage Type
EPO

Horizon Blue Cross Blue Shield New Jersey Omnia Tier II (EPO)

In Network Coverage Type
EPO

Horizon Medicare Advantage

In Network Coverage Type
PPO, HMO

Husky CT Medicaid

In Network Coverage Type
State Government

Magnacare

In Network Coverage Type
PPO, POS, EPO

Straight NJ Medicaid

In Network Coverage Type
State Government

Straight NY Medicaid

In Network Coverage Type
State Government

Medicare Part A&B (traditional Medicare)

In Network Coverage Type
Federal Government

Multiplan/Beech Street/PHCS

In Network Coverage Type
Supplemental

MVP

In Network Coverage Type
PPO/OAP

Non-Participating Plans with Out of Network Benefits

In Network Coverage Type
PPO, POS, EPO, HMO

NYC Medicare Advantage Plus for City Employees

In Network Coverage Type
TBD

Oscar

In Network Coverage Type
HMO/EPO

Oxford

In Network Coverage Type
PPO, EPO

World Trade Center Health Program (WTC)

In Network Coverage Type
State Government

Qualcare

In Network Coverage Type
PPO, POS, HMO

Tricare

In Network Coverage Type
PPO, HMO

UMR

In Network Coverage Type
PPO, POS

United Healthcare

In Network Coverage Type
PPO, POS, HMO

Don't see your carrier or plan? We can help you understand your coverage.

If you don't have health insurance or are worried that your care may not be fully covered, our financial assistance programs may be able to help.

If you have questions about insurance, call us at 646-497-9176.

Make an Appointment

Current Patients

Request an appointment by logging on to MyMSK or calling your doctor’s office. If you aren’t registered for MyMSK, call 646-227-2593 for your Enrollment ID.

Contact and Location

Dr. Karagkounis sees patients at three locations.

Office Phone
Location
New York, NY
Brooklyn, NY
Montvale, NJ
160 East 53rd Street New York NY 10022
2236 Nostrand Avenue (at the intersection of Flatbush and Nostrand Avenues) Brooklyn NY 11210
225 Summit Avenue Montvale NJ 07645

Looking to see a doctor at a different location? See all MSK locations.

Colleagues

Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.

See all Colorectal Service doctors

Clinical Trials

Smiling doctors in the lab
Find a Clinical Trial for You

Memorial Sloan Kettering's doctors and scientists are constantly developing new treatments for cancer. MSK is typically running hundreds of clinical trials at a given time.

You may be able to participate in a clinical trial even if you are new to MSK. Search our online directory to find trial information and see more about who can participate.

Search clinical trials

Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Karagkounis’s journal articles. Pubmed is an online index of research papers and other articles from the US National Library of Medicine and the National Institutes of Health.

See all on PubMed