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Dr. John Flannery, MD

Nashua, NH

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Flannery, Colon & Rectal Surgeon (Proctologist) in Nashua, NH?

    Dr. John Flannery, MD is a Colon & Rectal Surgeon (Proctologist), who primarily practices in Nashua, NH with 1 additional practice location. He is board certified by the American Board of Surgery. Dr. Flannery is fluent in English and Spanish, and is currently seeing new patients. Dr. Flannery’s practice accepts Cigna, Medicaid, Medicare, UnitedHealthcare, Aetna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Flannery’s office at (603) 577-3322.

    What are Areas of Expertise for Dr. Flannery?

    Dr. John Flannery, MD is a highly-rated, board-certified Colon & Rectal Surgeon (Proctologist) known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Flannery empowers patients to confidently navigate their health journey, specializing in Anorectal Disorders, Colon Cancer, Colonoscopy, Minimally Invasive Surgery, or comprehensive wellness support. Serving the Nashua/NH community, Dr. Flannery is dedicated to enhancing lives through expert, patient-centered care.

    Is Dr. Flannery board certified in Colon & Rectal Surgeon (Proctologist)?

    Yes, Dr. John Flannery, MD is board certified by the American Board of Surgery

    What languages does Dr. Flannery speak?

    Dr. Flannery and their clinical team can communicate with patients in the following languages:

    • English

    • Spanish

    What conditions does Dr. Flannery treat?

    As a Colon & Rectal Surgeon (Proctologist), Dr. Flannery diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Flannery. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.

    Also known as:

    • Colon Cancer Screening
    • Health Screening
    • Colorectal Cancer Screening (PDQ®)
    • Screening Tests to Detect Colorectal Cancer and Polyps
    • Tests to Detect Colorectal Cancer and Polyps
    • Colorectal Cancer Screening
    • Colonoscopy Screening
    • Bowel Cancer Screening

    ICD-10 Codes:

    • Z1211: Encounter for screening for malignant neoplasm of colon

    Also known as:

    • Second Degree Hemorrhoids
    • Third Degree Hemorrhoids
    • First Degree Hemorrhoids
    • Hemorrhoidal Skin Tags
    • Hemorrhoids
    • Internal hemorrhoids that prolapse
    • Grade 2 hemorrhoids
    • Moderate hemorrhoids
    • Prolapsed hemorrhoids
    • Grade 3 hemorrhoids
    • Severe hemorrhoids
    • Internal hemorrhoids
    • Grade 1 hemorrhoids
    • Mild hemorrhoids
    • Anal skin tags
    • Perianal skin tags
    • Leftover hemorrhoid skin
    • Piles
    • Anal veins
    • Swollen rectal veins

    ICD-10 Codes:

    • K641: Second degree hemorrhoids
    • K642: Third degree hemorrhoids
    • K640: First degree hemorrhoids
    • K644: Residual hemorrhoidal skin tags
    • K648: Other hemorrhoids

    Also known as:

    • Rectal Bleeding
    • Dark, Tarry Stools (Melena)
    • Gastrointestinal Bleeding
    • Gastrointestinal (GI) Bleeding
    • Anal Bleeding
    • Blood in Stool
    • Lower GI Bleed
    • Melena
    • Black Stools
    • Upper GI Bleed Signs

    ICD-10 Codes:

    • K625: Hemorrhage of anus and rectum
    • K921: Melena

    Also known as:

    • Other Anal and Rectal Condition
    • Anal Disorder
    • Rectal Disorder
    • Proctitis
    • Anal Disorders
    • Rectal Disorders

    ICD-10 Codes:

    • K6289: Other specified diseases of anus and rectum

    Also known as:

    • Large Intestine Diverticulitis
    • Large Intestine Diverticulitis with Perforation and Abscess
    • Diverticulosis and Diverticulitis
    • Abscess
    • Inflamed Colon Diverticula
    • Colon Diverticular Inflammation
    • Inflamed Colon Diverticula with Abscess
    • Perforated Large Bowel Diverticulitis

    ICD-10 Codes:

    • K5732: Diverticulitis of large intestine without perforation or abscess without bleeding
    • K5720: Diverticulitis of large intestine with perforation and abscess without bleeding

    Also known as:

    • Diverticulosis
    • Diverticulosis and Diverticulitis
    • Diverticular Disease
    • Intestinal Diverticula
    • Pouches in Intestine

    ICD-10 Codes:

    • K5790: Diverticulosis of intestine, part unspecified, without perforation or abscess without bleeding

    Also known as:

    • Colorectal Cancer
    • Rectal cancer
    • Colon cancer
    • Bowel cancer
    • Malignant neoplasm of rectum

    ICD-10 Codes:

    • C20: Malignant neoplasm of rectum

    Also known as:

    • Anal Fissure
    • Anal Disorder
    • Rectal Tear
    • Fissure in Anus
    • Perianal Fissure

    ICD-10 Codes:

    • K602: Anal fissure, unspecified

    Also known as:

    • Anal Fistula
    • Anal Disorder
    • Fistulas
    • Perianal Fistula
    • Fistula-in-Ano
    • Abnormal Anal Tract

    ICD-10 Codes:

    • K603: Anal fistula

    Also known as:

    • Pilonidal Sinus
    • Tailbone Disorder
    • Tailbone Sinus
    • Sacrococcygeal Sinus
    • Pilonidal Disease

    ICD-10 Codes:

    • L0592: Pilonidal sinus without abscess

    Also known as:

    • Abnormal Bowel Movements
    • Bowel Movement
    • Unusual stool
    • Changes in poop
    • Fecal changes

    ICD-10 Codes:

    • R195: Other fecal abnormalities

    Also known as:

    • Large Intestine Diverticulosis
    • Diverticulosis and Diverticulitis
    • Diverticular Disease
    • Colon Diverticula
    • Pockets in the Colon

    ICD-10 Codes:

    • K5730: Diverticulosis of large intestine without perforation or abscess without bleeding

    Also known as:

    • Benign Ascending Colon Polyp
    • Benign Tumor
    • Colonic Polyps
    • Colon Polyps
    • Non-cancerous ascending colon growth
    • Ascending colon adenoma
    • Ascending colon benign tumor

    ICD-10 Codes:

    • D122: Benign neoplasm of ascending colon

    Also known as:

    • Colon Polyps
    • Colonic Polyps
    • Colorectal Polyps
    • Intestinal Polyps
    • Bowel Polyps

    ICD-10 Codes:

    • Z86010: Personal history of colon polyps

    Which procedures does Dr. Flannery perform as a Colon & Rectal Surgeon (Proctologist)?

    As a Colon & Rectal Surgeon (Proctologist), procedures performed by a Dr. John Flannery may include:

    For detailed information, please contact Dr. Flannery's office.

    Does Dr. Flannery accept my insurance?

    Dr. Flannery accepts most major insurance plans. Important: Please call our office at (603) 577-3322 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Flannery accept in Nashua, NH?

    Dr. Flannery in Nashua, NH accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Boston Medical Center

    • Centene

    • Cigna

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • Federal Employee Program

    • Independence Blue Cross

    • Medicare

    • Point32Health

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Flannery's office located?

    Dr. John Flannery's Primary Practice

    8 Prospect St

    Nashua, NH 03060

    (603) 577-3322

    Get Directions

    Dr. John Flannery's Practice 2

    10 Jones Rd

    Milford, NH 03055

    Get Directions

    What is Dr. Flannery's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Flannery's National Provider Identifier (NPI) number is 1316996614.

    What common questions do patients ask about Dr. Flannery?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Flannery

    What is Dr. John Flannery's specialty?

    Dr. Flannery is a Colon & Rectal Surgeon (Proctologist) near Nashua, NH. A colon and rectal surgeon possesses the expertise to diagnose and treat a variety of ailments affecting the intestinal tract, including the colon, rectum, anal canal, and perianal area, through both medical and surgical interventions. Furthermore, this professional also engages with other organs and tissues, including the liver, urinary system, and female reproductive system, that are relevant to primary intestinal disorders. Contact Dr. Flannery to book an appointment today.

    Is this Dr. John Flannery affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Flannery is affiliated with Southern New Hampshire Medical Center which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    Where can I learn more about Colon & Rectal Surgeon (Proctologist)?

    Explore Colon & Rectal Surgeon (Proctologist) with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is John Flannery accepting new patients in Nashua, NH?

    Yes, Dr. John Flannery is accepting new patients at this time.

    Does Dr. John Flannery offer online booking?

    Please contact Dr. Flannery's office at (603) 577-3322 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Flannery?

    Please contact Dr. Flannery's office at (603) 577-3322 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Flannery have?

    Dr. John Flannery is certified by the American Board of Surgery.

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