Dr. John Flannery Jr, MD

Dr. John Flannery Jr, MD

Colon & Rectal Surgery  |  
Male  |  
Age 48
Insurances AcceptedSave
Dr. John Flannery Jr, MD is a colon & rectal surgery specialist in Nashua, NH and has been practicing for 15 years. He graduated from University Of Massachusetts Medical School in 1998 and specializes in colon & rectal surgery, general surgery, and more.Read his story

8 Prospect St

Nashua, NH 03060

Contact Information

(603) 577-3322

Insurance Accepted

  • AARP
  • Aetna
  • Amerigroup (Wellpoint)
  • Anthem Blue Cross Blue Shield
  • Assurant Health
  • Blue Cross Blue Shield
  • Cigna
  • Coventry Health Care
  • Fallon Community Health Plan
  • 7 More

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Learn about Dr. Flannery Jr

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you

Top Care Areas


See how frequently Dr. Flannery Jr performs your care needs compared to other doctors.

very high
more than 99% of peers
Anorectal Abscess
very high
more than 98% of peers
more than 86% of peers

Dr. Flannery Jr's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

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Dr. Flannery Jr's bio

This content was provided by Dr. Flannery Jr "John V. Flannery, Jr., MD, FACS, FASCRS earned his MD at the University of Massachusetts Medical School. His general surgery residency was completed at the University of North Carolina, including a final year as Chief Resident in Surgery. While a surgical resident, Dr. Flannery was awarded a prestigious Resident Research Scholarship from the American College of Surgeons and spent two years as a Research Fellow at Massachusetts General Hospital. His research has been published and presented both nationally and internationally. Dr. Flannery acquired additional specialty training during a fellowship in colorectal surgery at Rutgers-Robert Wood Johnson Hospital. He spent six years in practice in Atlanta before joining Colon & Rectal Surgery of New England. Dr. Flannery is double board certified in Colorectal Surgery and General Surgery. He has been elected as fellow in both the American Society of Colon and Rectal Surgeons and the American College of Surgeons"


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Care Philosophy

This content was provided by Dr. Flannery Jr "Patient satisfaction is one of my highest priorities.  Along with my dedicated staff, I persistently seek to offer the highest quality patient care experience.  I conduct my appointments with the personalized care and attention that I would expect for my own family.  I take the time to carefully listen to my patient's symptoms and concerns and then recommend the best treatment options for their condition.  Most importantly, I am considerate to always include my patient's individual needs in the decision making process.  In addition, I not only treat the clinical issue at hand, but counsel patients on ways to lead a healthier lifestyle.




  • Colon & Rectal Surgery
  • Gastroenterological Surgery
  • General Surgery
  • Laparoscopic Surgery
  • Robotic Surgery
  • Surgery

Board Certifications

  • Colon & Rectal Surgery
    Accredited by: American Board of Colon & Rectal Surgery*
  • General Surgery
    Accredited by: American Board of Surgery*

Conditions Treated


Read Less


  • Anoscopy With Removal of Anal Tumor
  • Colectomy
  • Colectomy and Sigmoidectomy With Robotic Assistance
  • Colon and Rectal Surgery
  • Colon Cancer Screening
  • Colon Surgery
  • Colonoscopy
  • Colonoscopy With Polypectomy
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Colorectal Surgery, Robotic-Assisted
  • 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
  • Hemorrhoid Removal
  • Hemorrhoidectomy or Excision of Anal Tags
  • Hernia Repair
  • Laparoscopic Colon Surgery
  • Laparoscopic Sigmoidectomy With Robotic Assistance
  • Laparoscopic Surgical Procedure
  • Laparotomy
  • Open Incisional and-or Ventral Hernia Repair
  • Proctectomy, Open or Laparoscopic (incl. Swenson and Duhamel Procedures)
  • 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)
  • Screening Colonoscopy
  • Sphincterotomy

Background Check

Malpractice Claims not available

Healthgrades does not collect malpractice information for New Hampshire.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • University Of Massachusetts, Amherst
    Undergraduate School | Graduated 1992
  • University Of Massachusetts Medical School
    Medical School | Graduated 1998
  • University Of North Carolina Hospitals
    Internship Hospital | Completed 1999
  • University Of North Carolina Hospitals
    Residency Hospital | Completed 2005
  • Massachusetts General Hospital
    Fellowship Hospital | Completed 2003
  • Rutgers-Robert Wood Johnson Medical School
    Fellowship Hospital | Completed 2006

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Flannery Jr has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Flannery Jr does not have any memberships or affiliations listed. If you are Dr. Flannery Jr and would like to add memberships or affiliations, please update your profile.

Dr. Flannery Jr's Reviews

Likelihood of recommending Dr. Flannery Jr to family and friends
based on 59 total reviews (22 with comments)

Likelihood to Recommend (59)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Flannery Jr's Performance

Explains condition(s) well
Answers Questions
Time well spent

Office & Staff Performance

Office environment
Staff friendliness
Average wait time
Under 10 minutes

Patient Comments (22)

in NH
Dr Flannery is a wonderful doctor! I have seen him in a few occasions and each time he was able to immediately diagnose my issue . He performed my first colonoscopy. He is VERY knowledgeable and listens to questions & concerns. I have never felt rushed during any of my office visits. I highly...more
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Hello Katie, thank you; we appreciate your feedback and we will be sure to share it with Dr. Flannery. Thanks!

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in Biddeford, Maine
Very competent manner. Took away any concern related to any lack of explanation or understanding.
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in Nashua, NH
In April, I had my first appt with Dr. Flannery. I am a Chron's patient who developed a fistula that required surgery. All points of visit/surgery/aftercare were top notch. I knew what was going on and what to expect at all times. Recuperation went without a hitch and everything turned out well. I...more
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in Alton, NH
Dr. Flannery most likely saved my life when I was diagnosed with diverticulosis last October. Since I had serious intestinal infection, he had to do everything necessary to stop that process and set me up for healing. Having done an excellent surgical job (twice), I am now on my way to being...more
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in Merrimack, NH
Dr Flannery was great to work with in a rough time for me. He and his staff were highly professional and was a pleasure working with him.
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