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Dr. Henry Dinneen, DO

Morristown, NJ

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Dinneen, Gastroenterologist in Morristown, NJ?

    Dr. Henry Dinneen, DO is a Gastroenterologist, who primarily practices in Morristown, NJ with 2 additional practice locations. Dr. Dinneen is fluent in English, and is currently seeing new patients. Dr. Dinneen’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Dinneen’s office.

    What are Areas of Expertise for Dr. Dinneen?

    Dr. Henry Dinneen, DO is a highly-rated, board-certified Gastroenterologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Dinneen empowers patients to confidently navigate their health journey, specializing in Achalasia, Barrett's Esophagus, Celiac Disease, Clostridium Difficile Infection (C. Difficile), Colitis, Colon Polyps & Cancer, Digestive Disorders, Diverticulitis, Esophageal Disorders, Gastrointestinal Bleeding, Hepatitis B & C, Inflammatory Bowel Disease, LGBTQ+ Health, Liver Disease, Pancreatic Disease, Peptic Acid Disorders, and comprehensive wellness support. Serving the Morristown, NJ community, Dr. Dinneen is dedicated to enhancing lives through expert, patient-centered care.

    What languages does Dr. Dinneen speak?

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

    • English

    What conditions does a Gastroenterologist like Dr. Dinneen typically treat?

    As a Gastroenterologist, Dr. Dinneen 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. Dinneen. 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. Learn more about our claims-based healthcare methodology here.

    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:

    • Acid Reflux
    • GERD with Esophagitis
    • GERD
    • Acid Reflux (GER & GERD) in Adults
    • Acid Reflux (GER & GERD) in Children
    • Acid Reflux (GER & GERD) in Infants
    • Eosinophilic Esophagitis
    • Gastroesophageal Reflux
    • Heartburn
    • Indigestion
    • Reflux Esophagitis
    • Acid Reflux Esophagus Inflammation
    • Heartburn with Esophagus Damage

    ICD-10 Codes:

    • K219: Gastro-esophageal reflux disease without esophagitis
    • K2100: Gastro-esophageal reflux disease with esophagitis, without bleeding

    Also known as:

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

    ICD-10 Codes:

    • K635: Polyp of colon

    Also known as:

    • Stomach and Duodenum Disorder
    • Stomach Disorder
    • Gastric Conditions
    • Duodenal Conditions
    • Digestive System Disorders

    ICD-10 Codes:

    • K3189: Other diseases of stomach and duodenum

    Also known as:

    • Upper Middle Abdominal Pain
    • Abdominal Pain
    • Epigastric pain
    • Pain below breastbone
    • Upper stomach pain

    ICD-10 Codes:

    • R1013: Epigastric pain

    Also known as:

    • Indigestion
    • Gas in the Digestive Tract
    • Indigestion (Dyspepsia)
    • Dyspepsia
    • Upset Stomach
    • Stomach Discomfort

    ICD-10 Codes:

    • K30: Functional dyspepsia

    What procedures does a Gastroenterologist like Dr. Dinneen typically perform?

    As a Gastroenterologist, Dr. Dinneen performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Dinneen. 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. Learn more about our claims-based healthcare methodology here.

    Also known as:

    • Colonoscopy with Polyp Removal
    • Colonoscopy with Biopsy
    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy with Tissue Removal
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision
    • Flexible Colonoscopy
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening
    • Flexible colonoscopy with EMR
    • Endoscopic mucosal resection (colon)
    • Colon polyp removal during colonoscopy

    CPT Codes:

    • 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
    • 45380: Colonoscopy, flexible; with biopsy, single or multiple
    • 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 45390: Colonoscopy, flexible; with endoscopic mucosal resection

    Also known as:

    • Upper Endoscopy with Biopsy
    • Biopsy
    • Endoscopy
    • EGD with Biopsy
    • Gastroscopy with Biopsy
    • Esophagogastroduodenoscopy with Biopsy

    CPT Codes:

    • 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple

    Also known as:

    • Diagnostic Upper Endoscopy with Biopsy
    • Colonoscopy with Injections
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • EGD with Biopsy
    • Esophagogastroduodenoscopy
    • Upper GI Endoscopy
    • Stomach Scope with Sample
    • Flexible Colonoscopy with Injection
    • Colon Scope with Medication
    • Therapeutic Colonoscopy

    CPT Codes:

    • 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance

    Does Dr. Dinneen accept my insurance?

    Dr. Dinneen accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Dinneen accept in Morristown, NJ?

    Dr. Dinneen in Morristown, NJ accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Centene Corporation

    • Cigna Group

    • CVS Health (formerly Aetna)

    • Horizon BlueCross BlueShield

    • Humana

    • Independence Health Group

    • Medicare

    • UnitedHealth Group

    • Unknown

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    Where is Dr. Dinneen's office located?

    Dr. Henry Dinneen's Primary Practice

    435 South St Ste 390

    Morristown, NJ 07960

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    Dr. Henry Dinneen's Practice 2

    333 Mount Hope Ave Ste 350

    Rockaway, NJ 07866

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    Dr. Henry Dinneen's Practice 3

    100 Madison Ave

    Morristown, NJ 07960

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

    Dr. Dinneen's National Provider Identifier (NPI) number is 1417247784.

    What common questions do patients ask about Dr. Dinneen?

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

    What is Dr. Henry Dinneen's specialty?

    Dr. Dinneen is a Gastroenterologist near Morristown, NJ.

    What does a Gastroenterologist do?

    An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs.

    Is this Dr. Henry Dinneen affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Dinneen is affiliated with Atlantic Health Morristown 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

    When to see a Gastroenterologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Gastroenterologist. Explore 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 Henry Dinneen accepting new patients in Morristown, NJ?

    Yes, Dr. Henry Dinneen is accepting new patients at this time.

    Does Dr. Henry Dinneen offer online booking?

    Please contact Dr. Dinneen's office for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Henry Dinneen?

    Please contact Dr. Dinneen's office for information regarding telehealth appointment availability or for scheduling assistance.

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