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Devin_Flaherty.

Devin Flaherty, DO, PhD, FACOS, FACS

Specialties:

Surgical Oncology
Patient Rating
4.9 / 5 (Based on 87 Ratings)
  • Valley Health Provider

Accepting new patients.

Accepted Insurance & Health Plans

About

Devin C Flaherty, DO, Ph.D., FACOS, FACS, is a fellowship-trained surgical oncologist and board-certified general surgeon. He attended medical and graduate school at the University of North Texas Health Science Center, completing a doctorate in both osteopathic medicine and integrative physiology. Dr. Flaherty then completed his internship and residency in general surgery at the Rowan University School of Osteopathic Medicine in Stratford, New Jersey. Dr. Flaherty received specialty training in surgical oncology through a fellowship at the John Wayne Cancer Institute in Santa Monica, California.

Dr. Flaherty’s interests focus on complex general surgical oncology, including diseases of the liver, pancreas, and GI tract, as well as the treatment of melanoma, and soft tissue malignancies. He also performs operations for benign and malignant endocrine disease. Dr. Flaherty’s recent research activities have focused on the prognostic implications of immunoprofiling and body mass index in colon cancer, surgical treatment approaches toward metastatic melanoma, and a review of the application of radiofrequency ablation for liver malignancies.

Dr. Flaherty aims to provide comprehensive cancer care in a compassionate manner, utilizing open, minimally invasive, and robotic surgical techniques to achieve optimal oncologic outcomes.

Common Conditions Treated

  • Colon cancer
  • Rectal cancer
  • Small intestine (bowel) cancer
  • Esophageal cancer
  • Stomach (gastric) cancer
  • Liver cancer
  • Pancreatic cancer
  • Tumors of the soft tissues and skin
  • Benign and malignant diseases of the thyroid, parathyroid, an adrenal glands

Professional Affiliations

Dr. Flaherty belongs to the following professional organizations:

  • American Osteopathic Association
  • American College of Osteopathic Surgeons (Fellow)
  • Society of Surgical Oncology
  • American College of Surgeons (Fellow)

Academic Appointment

  • Assistant Clinical Professor of Surgery (Virginia Commonwealth University – Richmond, VA)

In the News

Medical Areas of Interest

  • Complex general surgical oncology
  • Diseases of the liver, pancreas, and GI tract
  • Treatment of melanoma and soft tissue malignancies

Research Interests

Valley Health Surgical Oncology is actively enrolling patients in a clinical study to determine the best surveillance method for non-cancerous pancreatic cysts. The study compares more frequent monitoring versus less frequent monitoring to learn which approach leads to better outcomes for patients.

Click here to read more about the trial and watch a video from the ECOG-ACRIN Cancer Research Group.

Affiliations

  • Valley Health Surgical Oncology
  • Winchester Medical Center

Awards

  • Fellow of the American College of Surgeons (FACS) 2018
  • Fellow of the American College of Osteopathic Surgeons (FACOS) 2017
  • American College of Osteopathic Surgeons Robert C. Erwin Literary Award (First Place) 2016
  • Inaugural Recipient of Rowan School of Osteopathic Medicine Resident Golden Scalpel Award 2014
  • University of North Texas Health Science Center Chancellor’s Award for Scholarly Excellence 2009
  • Department of Surgery Award for Research Excellence in Surgery (Texas College of Osteopathic Medicine) 2009
  • Dean’s Award for Research Excellence (Texas College of Osteopathic Medicine) 2009

Locations

Education

Board Certification

General Surgery

Fellowship

John Wayne Cancer Institute: Santa Monica, CA Surgical Oncology

Internship

University of Medicine and Dentistry of New Jersey / Rowan University School of Osteopathic Medicine: Stratford, NJ Surgical Internship

Residency

University of Medicine and Dentistry of New Jersey / Rowan University School of Osteopathic Medicine: Stratford, NJ Surgical Residency

Medical School

Texas College of Osteopathic Medicine: Fort Worth, TX Doctorate of Osteopathic Medicine

Training

DaVinci Robotics Console Surgeon Training (2016), DaVinci Robotics First Assistant Training (2013)

Graduate School

University of Texas Graduate School of Biomedical Sciences: Houston, TX Doctorate of Philosophy in Integrative Physiology

Undergraduate School

Baylor University: Waco, TX Bachelor of Arts in Biology

Publications

2024

  • Baseline characteristics and recruitment for SWOG S1820: altering intake, managing bowel symptoms in survivors of rectal cancer (AIMS‑RC)

    2024 View Publication

  • SWOG S1820: A pilot randomized trial of the Altering Intake, Managing Bowel Symptoms Intervention in Survivors of Rectal Cancer

    2024 View Publication

  • Intra‑tumoral lymphocyte scoring in colorectal cancer: improving prognostic utility and correlation with underlying cancer biology

    Frontiers in Gastroenterology, 2024 View Publication

    Authors: Patrick L. Wagner, Jianwu Xie, Devin C. Flaherty, Hyun Park, Chelsea Knotts, Justine Debelius, Curtis Tilves, Neda Dadgar, Kunhong Xiao, Ali H. Zaidi, Louis Gil Acevedo, William LaFramboise, Ni Zhao, Cynthia Sears, Noel Mueller

2023

  • Surgical versus non‑surgical management for patients with malignant bowel obstruction (S1316): a pragmatic comparative effectiveness trial

    2023 View Publication

    Authors: Krouse RS, Anderson GL, Arnold KB, et al.

    Publisher: The Lancet Gastroenterology & Hepatology

2018

  • Can the association between obesity and colorectal cancer be explained by an unfavorable tumor immune microenvironment?

    2018

    Authors: Flaherty DC, Bilchik AJ

    Publisher: Annals of Surgical Oncology

  • The negative impact of obesity on the tumor microenvironment in colon cancer: results from a prospective trial

    2018

    Authors: Flaherty DC, Jalas JR, Sim MS, Stojadinovic A, Protic M, Lee DJ, Bilchik AJ

    Publisher: Annals of Surgical Oncology

2017

  • Association of surgical treatment, systemic therapy, and survival in patients with abdominal visceral melanoma metastases, 1965–2014: relevance of surgical cure in the era of modern systemic therapy

    2017

    Authors: Deutsch GB, Flaherty DC, Kirchoff DD, Bailey M, Vitug S, Foshag LJ, Faries MB, Bilchik AJ

    Publisher: JAMA Surgery

  • Breast cancer in male adolescents and young adults

    2017

    Authors: Flaherty DC, Bawa R, Burton C, Goldfarb M

    Publisher: Annals of Surgical Oncology

  • Radiofrequency ablation of liver tumors

    2017

    Authors: Flaherty DC, Bilchik AJ

    Publisher: In "Blumgart's Surgery of the Liver, Biliary Tract, and Pancreas", edited by Jarnagin WR, Blumgart LH. Elsevier, Philadelphia

2016

  • Prognostic utility of immunoprofiling in colon cancer: results from a prospective, multicenter nodal ultrastaging trial

    2016

    Authors: Flaherty DC, Lavotshkin S, Jalas JR, Torisu‑Itakura H, Kirchoff DD, Sim MS, Lee DJ, Bilchik AJ

    Publisher: Journal of the American College of Surgeons

  • The impact of completion lymph node dissection on patients with positive sentinel lymph node biopsy in melanoma

    2016

    Authors: Lee DY, Lau BJ, Huynh KT, Flaherty DC, Lee J, Stern SL, Foshag LJ, O’Day S, Faries MB

    Publisher: Journal of the American College of Surgeons

2015

  • Adrenalectomy for metastatic melanoma: current role in the age of multimodal treatment

    2015

    Authors: Flaherty DC, Deutsch GB, Huynh KT, Kirchoff D, Lee DY, Lee JH, Foshag LJ, Bilchik AJ, Faries MB

    Publisher: The American Surgeon

  • Ablative therapies for intrahepatic cholangiocarcinoma

    2015

    Authors: Flaherty DC, Bilchik AJ

    Publisher: In "Cholangiocarcinoma: From Diagnosis to Treatment", edited by Ribero D, Pawlik TM. Nova Science Publishers, New York

  • Hepatic hemorrhage as a consequence of rapid response to combined targeted therapy in metastatic melanoma

    2015

    Authors: Flaherty DC, Hoffner BW, Lau BJ, Hamid O, Faries MB

    Publisher: Journal of Surgical Oncology

Reviews

5.0
October 21, 2025
Good
5.0
September 27, 2025
They are great. The whole team. Was the best especially with all the cancer stuff very positive and upbeat. Explains your surgery and the why's for it down to even drawing things to show and explains things to you. Dr Flaherty and the whole team and staff are the best the whole
5.0
September 27, 2025
Good
5.0
September 27, 2025
Dr Flaherty and his staff are all top notch.
5.0
September 25, 2025
I have always received very good care in a timely manner from this practice.
5.0
September 04, 2025
Everything was explained fully including a drawing of my gallbladder and affected organs.
5.0
September 04, 2025
Good
5.0
September 01, 2025
Dr Devin Flaherty is awesome
4.8
August 21, 2025
All good
5.0
August 02, 2025
Valley Health and the surrounding areas are very blessed to have Dr. Flaherty. He is a professional, very knowledgeable, and listens and communicates well, I am grateful for his care!
5.0
July 10, 2025
Loved the doctor and nurse. Staff was amazing
5.0
May 22, 2025
All good
5.0
May 03, 2025
Dr Flaherty is wonderful. He's attentive and informed and cares about his patients.
5.0
May 02, 2025
Good
5.0
April 25, 2025
Dr Flaharty and his staff were awesome!
5.0
April 25, 2025
I could not have had better care !
5.0
April 21, 2025
I'm still waiting a biopsy before a plan of care and treatment can be discussed.
5.0
April 18, 2025
I have nothing but good things to say about the individuals I came in contact I got lost finding the building but the kind Valley Health worker stopped bad us follow him to the building.The nurses, receptionist and the Dr. Were very professional but not in a ',Holier than thou' attitude I've come across elsewhere. I'm 76 years old , and , many times , Drs treat the elderly as if WE are nearing our ,',expiration date' , and the care is not as genuine, more like a ' listen, nod your head when you think you should and get them out of the office' ..AND those Drs are there. I'm very fortunate to say , I haven't come across many of them in several years, at Valley Health.
5.0
April 18, 2025
Dr. Flaherty was extremely good at explaining everything in a clear and calming manner.
5.0
March 25, 2025
Good