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Dr. John Irwin, DO

Waterville, ME

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Irwin, Internist in Waterville, ME?

    Dr. John Irwin, DO is an Internist, who primarily practices in Waterville, ME with 1 additional practice location. He is board certified. Dr. Irwin completed his residency at Truman Med Ctr-West, Internal Medicine. Dr. Irwin is fluent in English, Arabic, French, and German, and is currently seeing new patients. Dr. Irwin’s practice accepts Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Irwin’s office.

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

    • Residency: Truman Med Ctr-West, Internal Medicine | U Mo

    • Medical School: University of Hlth Sci, Coll of Osteo Med, Kansas City Mo | Kansas City University of Medicine & Biosciences - College of Osteopathic Medicine

    Is Dr. Irwin board certified as an Internist?

    Yes, Dr. John Irwin, DO is board certified by the American Board of Internal Medicine

    What languages does Dr. Irwin speak?

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

    • Arabic

    • English

    • French

    • German

    What conditions does an Internist like Dr. Irwin typically treat?

    As an Internist, Dr. Irwin 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. Irwin. 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:

    • GERD with Esophagitis
    • Eosinophilic Esophagitis
    • GERD
    • Reflux Esophagitis
    • Acid Reflux Esophagus Inflammation
    • Heartburn with Esophagus Damage

    ICD-10 Codes:

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

    Also known as:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Upper body pain

    ICD-10 Codes:

    • R079: Chest pain, unspecified

    Also known as:

    • Barrett's Esophagus
    • Esophagus Disorder
    • Barrett’s Esophagus
    • Barrett's condition
    • Esophageal metaplasia

    ICD-10 Codes:

    • K2270: Barrett's esophagus without dysplasia

    Also known as:

    • Muscle Weakness
    • Muscle Disorder
    • Loss of strength
    • Fatigue
    • Muscle fatigue

    ICD-10 Codes:

    • R531: Weakness

    What procedures does an Internist like Dr. Irwin typically perform?

    As an Internist, Dr. Irwin 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. Irwin. 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
    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy with Biopsy
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision
    • Flexible Colonoscopy
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening

    CPT Codes:

    • 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)
    • 45380: Colonoscopy, flexible; with biopsy, single or multiple

    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
    • EGD with Biopsy
    • Esophagogastroduodenoscopy
    • Upper GI Endoscopy
    • Stomach Scope with Sample

    CPT Codes:

    • 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

    Does Dr. Irwin accept my insurance?

    Dr. Irwin 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. Irwin accept in Waterville, ME?

    Dr. Irwin in Waterville, ME 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)

    • Elevance Health Inc. (formerly Anthem)

    • Health Cost Solutions

    • Martin's Point

    • Medicare

    • State of Maine

    • Unknown

    View All Insurances

    Where is Dr. Irwin's office located?

    Dr. John Irwin's Primary Practice

    40 Airport Rd Ste 2

    Waterville, ME 04901

    Get Directions

    Dr. John Irwin's Practice 2

    364 Pritham Ave

    Greenville, ME 04441

    Get Directions

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

    Dr. Irwin's National Provider Identifier (NPI) number is 1528092491.

    What common questions do patients ask about Dr. Irwin?

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

    What is Dr. John Irwin's specialty?

    Dr. Irwin is a Internist near Waterville, ME.

    What does an Internist do?

    A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

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

    Yes, Dr. Irwin is affiliated with Northern Light Eastern Maine Medical Center, Mainehealth Maine Medical Center Portland which are a Castle Connolly Top Hospitals. 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 an Internist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Internist. 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 John Irwin accepting new patients in Waterville, ME?

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

    Does Dr. John Irwin offer online booking?

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

    How can I make an appointment with John Irwin?

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

    Which board certifications does Dr. John Irwin have?

    Dr. John Irwin is certified by the American Board of Internal Medicine.

    <section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>