EverydayHealthLogo
TD

Dr. Thomas Diehl, MD

Madison, WI

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Diehl, Surgeon in Madison, WI?

    Dr. Thomas Diehl, MD is a Surgeon, who primarily practices in Madison, WI with 2 additional practice locations. Dr. Diehl is fluent in English, and is currently seeing new patients. Dr. Diehl’s practice accepts Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Diehl’s office at (608) 263-6400.

    What languages does Dr. Diehl speak?

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

    • English

    What conditions does a Surgeon like Dr. Diehl typically treat?

    As a Surgeon, Dr. Diehl 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. Diehl. 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
    • Acid Reflux (GER & GERD) in Adults
    • Acid Reflux (GER & GERD) in Children
    • Acid Reflux (GER & GERD) in Infants
    • Gastroesophageal Reflux
    • Heartburn
    • Indigestion

    ICD-10 Codes:

    • K219: Gastro-esophageal reflux disease without esophagitis

    Also known as:

    • Abnormal Breast Imaging Results
    • Mammography
    • Inconclusive mammogram
    • Unclear breast scan results
    • Abnormal breast scan

    ICD-10 Codes:

    • R928: Other abnormal and inconclusive findings on diagnostic imaging of breast

    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:

    • 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:

    • Chronic Stomach Inflammation
    • Stomach Disorder
    • Gastritis & Gastropathy
    • Chronic gastritis
    • Long-term stomach inflammation
    • Persistent stomach lining inflammation

    ICD-10 Codes:

    • K2950: Unspecified chronic gastritis without bleeding

    Also known as:

    • Non-Infectious Gastroenteritis and Colitis
    • Digestive Disease
    • Inflammation of Stomach and Intestines
    • Non-Bacterial Colitis
    • Gut Inflammation

    ICD-10 Codes:

    • K529: Noninfective gastroenteritis and colitis, 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:

    • Fluid in Abdomen
    • Liver Disease
    • Ascites
    • Abdominal fluid buildup
    • Peritoneal fluid

    ICD-10 Codes:

    • R188: Other ascites

    What procedures does a Surgeon like Dr. Diehl typically perform?

    As a Surgeon, Dr. Diehl 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. Diehl. 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 Biopsy
    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy with Polyp Removal
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision
    • Flexible Colonoscopy with Biopsy
    • Colorectal Polyp Removal
    • Hot Biopsy Colonoscopy

    CPT Codes:

    • 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)
    • 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
    • 45384: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by hot biopsy forceps

    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)

    Also known as:

    • Abdominal Fluid Drainage with Imaging Guidance
    • Guided Abdominal Paracentesis
    • Ascites Drainage with Ultrasound
    • Fluid Removal from Belly

    CPT Codes:

    • 49083: Abdominal paracentesis (diagnostic or therapeutic); with imaging guidance

    Also known as:

    • Breast Biopsy with Stereotactic Guidance
    • Breast Biopsy
    • Stereotactic Breast Biopsy
    • Image-Guided Breast Biopsy
    • Percutaneous Breast Biopsy
    • Breast Lesion Biopsy

    CPT Codes:

    • 19081: Biopsy, breast, with placement of breast localization device(s) (eg, clip, metallic pellet), when performed, and imaging of the biopsy specimen, when performed, percutaneous; first lesion, including stereotactic guidance

    Does Dr. Diehl accept my insurance?

    Dr. Diehl accepts most major insurance plans. Important: Please call our office at (608) 263-6400 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Diehl accept in Madison, WI?

    Dr. Diehl in Madison, WI accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Elevance Health Inc. (formerly Anthem)

    • Humana

    • Medicaid

    • Medicare

    • Quartz Health Solutions

    • UMR Administered Payer

    • UnitedHealth Group

    • Unknown

    • Wisconsin Physicians Health (WPS)

    View All Insurances

    Where is Dr. Diehl's office located?

    Dr. Thomas Diehl's Primary Practice

    600 Highland Ave

    Madison, WI 53792

    (608) 263-6400

    Get Directions

    Dr. Thomas Diehl's Practice 2

    Uw Hospitals And Clinics 600 Highland Ave

    Madison, WI 53792

    Get Directions

    Dr. Thomas Diehl's Practice 3

    212 Milwaukee Ave W

    Fort Atkinson, WI 53538

    Get Directions

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

    Dr. Diehl's National Provider Identifier (NPI) number is 1134617608.

    What common questions do patients ask about Dr. Diehl?

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

    What is Dr. Thomas Diehl's specialty?

    Dr. Diehl is a Surgeon near Madison, WI.

    What does a Surgeon do?

    General surgeons are experts in diagnosing and managing surgical conditions which includes preoperative, operative, and postoperative care, as well as addressing complications. Their expertise include the areas such as the alimentary tract, breast, abdomen, skin and soft tissue, endocrine system, head and neck, pediatric surgery, surgical critical care, surgical oncology, trauma, burns, and vascular surgery. General surgeons increasingly utilize minimally invasive and endoscopic techniques to provide proper care. In addition to this, many general surgeons have expertise in transplantation, plastic, and cardiothoracic surgery.

    Is this Dr. Thomas Diehl affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Diehl is affiliated with Fort Memorial Hospital, Uw Health University Hospital 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 a Surgeon?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Surgeon. 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 Thomas Diehl accepting new patients in Madison, WI?

    Yes, Dr. Thomas Diehl is accepting new patients at this time.

    Does Dr. Thomas Diehl offer online booking?

    Please contact Dr. Diehl's office at (608) 263-6400 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Thomas Diehl?

    Please contact Dr. Diehl's office at (608) 263-6400 for information regarding telehealth appointment availability or for scheduling assistance.

    <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>