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Dr. Jonathan Nass, MD

South Weymouth, MA

Accepting patients

    Who is Dr. Nass, Gastroenterologist in South Weymouth, MA?

    Dr. Jonathan Nass, MD is a Gastroenterologist, who primarily practices in South Weymouth, MA with 1 additional practice location. He is board certified. Dr. Nass is fluent in English and Spanish, and is currently seeing new patients. Dr. Nass’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Nass’s office.

    What are Areas of Expertise for Dr. Nass?

    Dr. Jonathan Nass, MD is a highly-rated, board-certified Gastroenterologist 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. Nass empowers patients to confidently navigate their health journey, specializing in Pancreatic Disease, or comprehensive wellness support. Serving the South Weymouth/MA community, Dr. Nass is dedicated to enhancing lives through expert, patient-centered care.

    Where did Dr. Nass go to medical school and complete their residency?

    • Medical School: Tulane University of Louisiana --

    What languages does Dr. Nass speak?

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

    • English

    • Spanish

    What conditions does Dr. Nass treat?

    As a Gastroenterologist, Dr. Nass 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. Nass. 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:

    • Upper Middle Abdominal Pain
    • Widespread Abdominal Pain
    • Abdominal Pain
    • Epigastric pain
    • Pain below breastbone
    • Upper stomach pain
    • General stomach pain
    • Overall belly pain
    • Diffuse abdominal pain

    ICD-10 Codes:

    • R1013: Epigastric pain
    • R1084: Generalized abdominal pain

    Also known as:

    • Difficulty Swallowing
    • Swallowing Disorder
    • Dysphagia
    • Trouble swallowing
    • Painful swallowing

    ICD-10 Codes:

    • R1310: Dysphagia, unspecified

    Also known as:

    • Change in Bowel Habits
    • Bowel Movement
    • Altered Bowel Habits
    • Irregular Bowel Movements
    • Changes in Pooping

    ICD-10 Codes:

    • R194: Change in bowel habit

    Also known as:

    • Rectal Bleeding
    • Gastrointestinal Bleeding
    • Gastrointestinal (GI) Bleeding
    • Anal Bleeding
    • Blood in Stool
    • Lower GI Bleed

    ICD-10 Codes:

    • K625: Hemorrhage of anus and rectum

    Also known as:

    • Anemia
    • Low Red Blood Cell Count
    • Low Hemoglobin
    • Iron deficiency

    ICD-10 Codes:

    • D649: Anemia, unspecified

    What procedures does Dr. Nass perform?

    As a Gastroenterologist, Dr. Nass 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. Nass. 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:

    • Colonoscopy with Biopsy
    • Colonoscopy with Polyp Removal
    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening

    CPT Codes:

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

    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:

    • Esophageal Dilation (Bougie)
    • Esophageal Widening
    • Bougie Dilation of Esophagus
    • Swallowing Tube Dilation

    CPT Codes:

    • 43450: Dilation of esophagus, by unguided sound or bougie, single or multiple passes

    Does Dr. Nass accept my insurance?

    Dr. Nass 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. Nass accept in South Weymouth, MA?

    Dr. Nass in South Weymouth, MA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Medicare

    • Other TPA

    • Piedmont Wellstar Health Plans

    • SGS North America Inc

    • State of Massachusetts

    • State of Tennessee

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    Where is Dr. Nass' office located?

    South Suburban Gastroenterology

    1085 Main Street

    South Weymouth, MA 02190

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    South Suburban Gastroenterology

    97 Libbey Industrial Parkway

    Weymouth, MA 02189

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

    Dr. Nass's National Provider Identifier (NPI) number is 1558587998.

    What common questions do patients ask about Dr. Nass?

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

    What is Dr. Jonathan Nass's specialty?

    Dr. Nass is a Gastroenterologist near South Weymouth, MA. 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. Contact Dr. Nass to book an appointment today.

    Is this Dr. Jonathan Nass affiliated with a ranked Castle Connolly Top Hospital?

    No, Nass is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: South Shore Hospital. Castle Connolly Top Hospitals 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 Gastroenterologist?

    Explore Gastroenterologist 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 Jonathan Nass accepting new patients in South Weymouth, MA?

    Yes, Dr. Jonathan Nass is accepting new patients at this time.

    Does Dr. Jonathan Nass offer online booking?

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

    How can I make an appointment with Jonathan Nass?

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

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