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Dr. Andrzej Janecki, MD

Dr. Andrzej Janecki, MD

Katy, TX

42 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Janecki, Gastroenterologist in Katy, TX?

    Dr. Andrzej Janecki, MD is a Gastroenterologist, who primarily practices in Katy, TX with 1 additional practice location. He has been practicing for over 42 years and is board certified. Dr. Janecki graduated from Medical Academy of Poznan and completed his residency at Johns Hopkins Univ Sch Med, Gastroenterology; Univ Tx Med Sch At Houston, Internal Medicine. Dr. Janecki is fluent in English and Polish, and is currently seeing new patients. Dr. Janecki’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Janecki’s office.

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

    • Fellowship: Johns Hopkins University / School of Medicine

    • Residency: Johns Hopkins Univ Sch Med, Gastroenterology; Univ Tx Med Sch At Houston, Internal Medicine | University of Texas Health Science Center - Houston, Texas | Johns Hopkins Bloomberg School of Public Health Program A

    • Medical School: Akademia Med Im Karola Marcinkowskiego | Medical Academy of Poznan | Poznan University of Medical Sciences

    Is Dr. Janecki board certified as a Gastroenterologist?

    Yes, Dr. Andrzej Janecki, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Janecki speak?

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

    • English

    • Polish

    What conditions does a Gastroenterologist like Dr. Janecki typically treat?

    As a Gastroenterologist, Dr. Janecki 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. Janecki. 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:

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

    ICD-10 Codes:

    • K635: Polyp of colon

    Also known as:

    • Stomach or Duodenum Polyp
    • Stomach Disorder
    • Gastric Polyp
    • Duodenal Polyp
    • Stomach Growth

    ICD-10 Codes:

    • K317: Polyp of stomach and duodenum

    Also known as:

    • Other Esophagus Condition
    • Esophagus Disorder
    • Various esophageal diseases
    • Miscellaneous esophagus problems
    • Other food pipe issues

    ICD-10 Codes:

    • K2289: Other specified disease of esophagus

    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

    What procedures does a Gastroenterologist like Dr. Janecki typically perform?

    As a Gastroenterologist, Dr. Janecki 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. Janecki. 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
    • 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:

    • EGD with Esophageal Balloon Dilation
    • Colonoscopy with Injections
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Upper Endoscopy with Esophageal Dilation
    • Flexible Esophagoscopy with Balloon
    • EGD with Balloon Widening
    • Flexible Colonoscopy with Injection
    • Colon Scope with Medication
    • Therapeutic Colonoscopy

    CPT Codes:

    • 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

    Also known as:

    • Wireless Esophageal pH Test
    • Esophageal pH Test
    • Bravo pH Test
    • Esophageal Reflux Monitoring
    • Acid Reflux Test

    CPT Codes:

    • 91035: Esophagus, gastroesophageal reflux test; with mucosal attached telemetry pH electrode placement, recording, analysis and interpretation

    Does Dr. Janecki accept my insurance?

    Dr. Janecki 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. Janecki accept in Katy, TX?

    Dr. Janecki in Katy, TX accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Allied Benefit Systems

    • Cigna Group

    • Community Health Choice

    • CVS Health (formerly Aetna)

    • Health Care Service Corporation

    • Medicare

    • Memorial Hermann Health Insurance Company

    • UMR Administered Payer

    • UnitedHealth Group

    View All Insurances

    Where is Dr. Janecki's office located?

    Dr. Andrzej Janecki's Primary Practice

    23920 Katy Fwy Ste 560

    Katy, TX 77494

    Get Directions

    Dr. Andrzej Janecki's Practice 2

    1331 W Grand Pkwy N Ste 350

    Katy, TX 77493

    Get Directions

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

    Dr. Janecki's National Provider Identifier (NPI) number is 1871591263.

    What common questions do patients ask about Dr. Janecki?

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

    What is Dr. Andrzej Janecki's specialty?

    Dr. Janecki is a Gastroenterologist near Katy, TX.

    What does a Gastroenterologist do?

    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.

    Is this Dr. Andrzej Janecki affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Janecki is affiliated with Memorial Hermann Katy Hospital, Memorial Hermann Memorial City Medical Center, Memorial Hermann Surgical Hospital First Colony, Houston Methodist West 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 Gastroenterologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Gastroenterologist. 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 Andrzej Janecki accepting new patients in Katy, TX?

    Yes, Dr. Andrzej Janecki is accepting new patients at this time.

    Does Dr. Andrzej Janecki offer online booking?

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

    How can I make an appointment with Andrzej Janecki?

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

    Which board certifications does Dr. Andrzej Janecki have?

    Dr. Andrzej Janecki 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>