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Dr. Nihaal Karnik, MD

Seattle, WA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Karnik, Gastroenterologist in Seattle, WA?

    Dr. Nihaal Karnik, MD is a Gastroenterologist, who primarily practices in Seattle, WA with 2 additional practice locations. Dr. Karnik is fluent in English, and is currently seeing new patients. Dr. Karnik’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Karnik’s office at (206) 223-2319.

    What languages does Dr. Karnik speak?

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

    • English

    What conditions does Dr. Karnik treat?

    As a Gastroenterologist, Dr. Karnik 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. Karnik. 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:

    • Stomach and Duodenum Disorder
    • Stomach or Duodenum Polyp
    • Stomach Disorder
    • Gastric Conditions
    • Duodenal Conditions
    • Digestive System Disorders
    • Gastric Polyp
    • Duodenal Polyp
    • Stomach Growth

    ICD-10 Codes:

    • K3189: Other diseases of stomach and duodenum
    • K317: Polyp of stomach and duodenum

    Also known as:

    • Abnormal Digestive Tract Imaging
    • Abnormal GI scan
    • Unusual digestive imaging
    • Digestive system imaging findings

    ICD-10 Codes:

    • R933: Abnormal findings on diagnostic imaging of other parts of digestive tract

    Also known as:

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

    ICD-10 Codes:

    • K635: Polyp of colon

    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:

    • Dark, Tarry Stools (Melena)
    • Gastrointestinal Bleeding
    • Melena
    • Black Stools
    • Upper GI Bleed Signs

    ICD-10 Codes:

    • K921: Melena

    Also known as:

    • Other Specific Pancreatic Disease
    • Pancreatic Disease
    • Miscellaneous Pancreas Disorders
    • Named Pancreatic Conditions
    • Other Defined Pancreas Problems

    ICD-10 Codes:

    • K8689: Other specified diseases of pancreas

    What procedures does Dr. Karnik perform?

    As a Gastroenterologist, Dr. Karnik 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. Karnik. 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 with Tissue Removal
    • 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
    • Flexible colonoscopy with EMR
    • Endoscopic mucosal resection (colon)
    • Colon polyp removal during colonoscopy

    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)
    • 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:

    • EGD with Endoscopic Ultrasound
    • Diagnostic Upper Endoscopy with Biopsy
    • Small Intestine Endoscopy with Biopsy
    • Colonoscopy with Injections
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Upper GI Endoscopy with Ultrasound
    • EUS (Endoscopic Ultrasound)
    • Esophagus, Stomach, Duodenum Ultrasound
    • EGD with Biopsy
    • Esophagogastroduodenoscopy
    • Upper GI Endoscopy
    • Stomach Scope with Sample
    • Enteroscopy with Biopsy
    • Small Bowel Endoscopy
    • Intestinal Biopsy (Endoscopic)
    • Flexible Colonoscopy with Injection
    • Colon Scope with Medication
    • Therapeutic Colonoscopy

    CPT Codes:

    • 43237: Esophagogastroduodenoscopy, flexible, transoral; with endoscopic ultrasound examination limited to the esophagus, stomach or duodenum, and adjacent structures
    • 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 44361: Small intestinal endoscopy, enteroscopy beyond second portion of duodenum, not including ileum; with biopsy, single or multiple
    • 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance

    Also known as:

    • Upper GI Endoscopy with Ultrasound Biopsy
    • Biopsy
    • Endoscopy
    • Ultrasound
    • EGD with EUS-FNA
    • Endoscopic Ultrasound Biopsy
    • Esophageal/Stomach Biopsy

    CPT Codes:

    • 43238: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic ultrasound-guided intramural or transmural fine needle aspiration/biopsy(s), (includes endoscopic ultrasound examination limited to the esophagus, stomach or duodenum, and adjacent structures)

    Also known as:

    • ERCP with Bile or Pancreatic Duct Stent Removal
    • ERCP with Stent Placement
    • ERCP with Sphincterotomy
    • ERCP for Bile/Pancreatic Stent Exchange
    • Endoscopic Retrograde Cholangiopancreatography
    • Bile Duct Stent Removal
    • Pancreatic Duct Foreign Body Removal
    • ERCP Stone Removal
    • Endoscopic Retrograde Cholangiopancreatography with Stent
    • Bile Duct Stent Placement via ERCP
    • Pancreatic Duct Stent Placement via ERCP
    • Endoscopic retrograde cholangiopancreatography
    • Bile duct scope
    • Pancreatic duct scope
    • Papillotomy
    • Bile duct stent replacement (ERCP)
    • Endoscopic retrograde cholangiopancreatography with stent exchange
    • Biliary stent removal and replacement
    • Pancreatic duct stent exchange

    CPT Codes:

    • 43275: Endoscopic retrograde cholangiopancreatography (ERCP); with removal of foreign body(s) or stent(s) from biliary/pancreatic duct(s)
    • 43274: Endoscopic retrograde cholangiopancreatography (ERCP); with placement of endoscopic stent into biliary or pancreatic duct, including pre- and post-dilation and guide wire passage, when performed, including sphincterotomy, when performed, each stent
    • 43262: Endoscopic retrograde cholangiopancreatography (ERCP); with sphincterotomy/papillotomy
    • 43276: Endoscopic retrograde cholangiopancreatography (ERCP); with removal and exchange of stent(s), biliary or pancreatic duct, including pre- and post-dilation and guide wire passage, when performed, including sphincterotomy, when performed, each stent exchanged

    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:

    • Upper Endoscopy with Polyp Removal
    • EGD with Polypectomy
    • Esophagus, Stomach, Duodenum Scope with Removal
    • Flexible Endoscopy Tumor Excision

    CPT Codes:

    • 43251: Esophagogastroduodenoscopy, flexible, transoral; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique

    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

    Does Dr. Karnik accept my insurance?

    Dr. Karnik accepts most major insurance plans. Important: Please call our office at (206) 223-2319 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Karnik accept in Seattle, WA?

    Dr. Karnik in Seattle, WA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Centene

    • CVS Health (formerly Aetna)

    • Federal Employee Program

    • HealthComp

    • Highmark Inc.

    • Independence Blue Cross

    • Medicare

    • State of Tennessee

    • UnitedHealthcare

    • UPMC Health Plan

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    Where is Dr. Karnik's office located?

    Dr. Nihaal Karnik's Primary Practice

    1100 9th Ave

    Seattle, WA 98101

    (206) 223-2319

    Get Directions

    Dr. Nihaal Karnik's Practice 2

    245 N 15th St

    Philadelphia, PA 19102

    Get Directions

    Dr. Nihaal Karnik's Practice 3

    1800 Mulberry St

    Scranton, PA 18510

    Get Directions

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

    Dr. Karnik's National Provider Identifier (NPI) number is 1407384852.

    What common questions do patients ask about Dr. Karnik?

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

    What is Dr. Nihaal Karnik's specialty?

    Dr. Karnik is a Gastroenterologist near Seattle, WA. 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. Karnik to book an appointment today.

    Is this Dr. Nihaal Karnik affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Karnik is affiliated with Geisinger Wyoming Valley Medical Center, Lehigh Valley Health Network - Dickson City, Geisinger Medical Center, Jefferson Einstein Philadelphia Hospital, Wayne Memorial Hospital, Regional Hospital of Scranton 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 Nihaal Karnik accepting new patients in Seattle, WA?

    Yes, Dr. Nihaal Karnik is accepting new patients at this time.

    Does Dr. Nihaal Karnik offer online booking?

    Please contact Dr. Karnik's office at (206) 223-2319 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Nihaal Karnik?

    Please contact Dr. Karnik's office at (206) 223-2319 for information regarding telehealth appointment availability or for scheduling assistance.

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