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Dr. Andrew Overhiser, MD

Flagstaff, AZ

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Overhiser, Gastroenterologist in Flagstaff, AZ?

    Dr. Andrew Overhiser, MD is a Gastroenterologist, who primarily practices in Flagstaff, AZ with 2 additional practice locations. He is board certified. Dr. Overhiser is fluent in English and Spanish, and is currently seeing new patients. Dr. Overhiser’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Overhiser’s office at (928) 773-2547.

    Is Dr. Overhiser board certified as a Gastroenterologist?

    Yes, Dr. Andrew Overhiser, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Overhiser speak?

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

    • English

    • Spanish

    What conditions does Dr. Overhiser treat?

    As a Gastroenterologist, Dr. Overhiser 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. Overhiser. 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:

    • Follow-up After Treatment (Non-Cancer)
    • Post-Treatment Check-up
    • Aftercare Visit
    • Recovery Monitoring Exam

    ICD-10 Codes:

    • Z09: Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

    Also known as:

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

    ICD-10 Codes:

    • Z86010: Personal history of colon polyps
    • Z860109: Personal history of other colon polyps

    Also known as:

    • Diaphragmatic Hernia
    • Hernia
    • Hiatal Hernia
    • Hernia of the Diaphragm

    ICD-10 Codes:

    • K449: Diaphragmatic hernia without obstruction or gangrene

    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

    What procedures does Dr. Overhiser perform?

    As a Gastroenterologist, Dr. Overhiser 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. Overhiser. 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 Polyp Removal
    • Colonoscopy with Biopsy
    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy with Tissue Removal
    • Colonoscopy with Bleeding Control
    • 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
    • Endoscopic Hemostasis
    • Colonoscopy for Bleeding

    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
    • 45382: Colonoscopy, flexible; with control of bleeding, any method

    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 Esophageal Balloon Dilation
    • Colonoscopy with Injections
    • Flexible Sigmoidoscopy with Biopsy
    • Upper Endoscopy with Varices Banding
    • Colonoscopy with Foreign Body Removal
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • EGD with Biopsy
    • Esophagogastroduodenoscopy
    • Upper GI Endoscopy
    • Stomach Scope with Sample
    • Upper Endoscopy with Esophageal Dilation
    • Flexible Esophagoscopy with Balloon
    • EGD with Balloon Widening
    • Flexible Colonoscopy with Injection
    • Colon Scope with Medication
    • Therapeutic Colonoscopy
    • Sigmoid Colon Scope with Biopsy
    • Lower Endoscopy with Tissue Sample
    • Flexible Sigmoidoscopy and Biopsy
    • Rectum and Lower Colon Exam
    • EGD with Band Ligation
    • Esophageal Varices Banding
    • Gastric Varices Treatment
    • Flexible Colonoscopy for Object Removal
    • Colon Scope with Foreign Object Extraction
    • Foreign Body Removal from Colon
    • Colonoscopy for Foreign Object

    CPT Codes:

    • 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 43249: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic balloon dilation of esophagus (less than 30 mm diameter)
    • 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
    • 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
    • 43244: Esophagogastroduodenoscopy, flexible, transoral; with band ligation of esophageal/gastric varices
    • 45379: Colonoscopy, flexible; with removal of foreign body(s)

    Also known as:

    • Upper Endoscopy with Polyp Removal
    • Upper Endoscopy with Stomach/Duodenum Dilation
    • EGD with Polypectomy
    • Esophagus, Stomach, Duodenum Scope with Removal
    • Flexible Endoscopy Tumor Excision
    • EGD with Dilation
    • Esophageal Dilation
    • Stomach Stricture Widening
    • Duodenal Stricture Repair

    CPT Codes:

    • 43251: Esophagogastroduodenoscopy, flexible, transoral; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
    • 43245: Esophagogastroduodenoscopy, flexible, transoral; with dilation of gastric/duodenal stricture(s) (eg, balloon, bougie)

    Also known as:

    • Upper Endoscopy for Foreign Body Removal
    • EGD for Foreign Body
    • Gastroscopy for Object Removal
    • Esophagogastroduodenoscopy for Foreign Body

    CPT Codes:

    • 43247: Esophagogastroduodenoscopy, flexible, transoral; with removal of foreign body(s)

    Also known as:

    • Stopping Bleeding in Esophagus, Stomach, or Duodenum
    • EGD with Bleeding Control
    • Upper GI Endoscopy for Bleeding
    • Gastric Bleeding Treatment

    CPT Codes:

    • 43255: Esophagogastroduodenoscopy, flexible, transoral; with control of bleeding, any method

    Also known as:

    • ERCP with Gallstone Removal
    • ERCP
    • Endoscopic Gallstone Removal
    • Biliary Duct Stone Removal
    • Pancreatic Duct Cleaning

    CPT Codes:

    • 43264: Endoscopic retrograde cholangiopancreatography (ERCP); with removal of calculi/debris from biliary/pancreatic duct(s)

    Also known as:

    • Capsule Endoscopy
    • Pill Camera
    • Wireless Capsule Endoscopy
    • Small Bowel Capsule Endoscopy
    • Intestinal Imaging Pill

    CPT Codes:

    • 91110: Gastrointestinal tract imaging, intraluminal (eg, capsule endoscopy), esophagus through ileum, with interpretation and report

    Does Dr. Overhiser accept my insurance?

    Dr. Overhiser accepts most major insurance plans. Important: Please call our office at (928) 773-2547 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Overhiser accept in Flagstaff, AZ?

    Dr. Overhiser in Flagstaff, AZ accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Bath Iron Works

    • Blue Cross Blue Shield of Arizona

    • IASIS Healthcare

    • Medicare

    • PacificSource

    • StableView Health

    • State of Arizona

    • Ucare

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Overhiser's office located?

    Dr. Andrew Overhiser's Primary Practice

    1215 N Beaver St

    Flagstaff, AZ 86001

    (928) 773-2547

    Get Directions

    Dr. Andrew Overhiser's Practice 2

    77 W Forest Ave Ste 210

    Flagstaff, AZ 86001

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    Dr. Andrew Overhiser's Practice 3

    1895 N Jasper Dr

    Flagstaff, AZ 86001

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

    Dr. Overhiser's National Provider Identifier (NPI) number is 1679789549.

    What common questions do patients ask about Dr. Overhiser?

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

    What is Dr. Andrew Overhiser's specialty?

    Dr. Overhiser is a Gastroenterologist near Flagstaff, AZ. 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. Overhiser to book an appointment today.

    Is this Dr. Andrew Overhiser affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Overhiser is affiliated with Flagstaff Medical Center, Verde Valley Medical Center 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

    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 Andrew Overhiser accepting new patients in Flagstaff, AZ?

    Yes, Dr. Andrew Overhiser is accepting new patients at this time.

    Does Dr. Andrew Overhiser offer online booking?

    Please contact Dr. Overhiser's office at (928) 773-2547 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Andrew Overhiser?

    Please contact Dr. Overhiser's office at (928) 773-2547 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Andrew Overhiser have?

    Dr. Andrew Overhiser is certified by the American Board of Internal Medicine.

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