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Dr. John Lah, MD

Dr. John Lah, MD

Fallbrook, CA

Accepting patients
Telehealth

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Lah, Gastroenterologist in Fallbrook, CA?

    Dr. John Lah, MD is a Gastroenterologist, who primarily practices in Fallbrook, CA with 1 additional practice location. He is board certified. Dr. Lah graduated from New York Medical College and completed his residency at University of California Medical Center. Dr. Lah is fluent in English and Spanish, and is currently seeing new patients. Dr. Lah’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Lah’s office.

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

    • Fellowship: University of California Medical Center

    • Residency: University of California Medical Center

    • Medical School: New York Medical College

    Is Dr. Lah board certified as a Gastroenterologist?

    Yes, Dr. John Lah, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Lah speak?

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

    • English

    • Spanish

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

    As a Gastroenterologist, Dr. Lah 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. Lah. 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.

    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
    • Intestinal Polyps
    • Bowel Polyps

    ICD-10 Codes:

    • Z86010: Personal history of colon polyps
    • Z860100: Personal history of colon polyps, unspecified

    Also known as:

    • Family History of Digestive Organ Cancer
    • Cancer
    • Family History
    • Genetic risk for gastrointestinal cancer
    • Family history of GI cancer
    • Hereditary digestive cancer

    ICD-10 Codes:

    • Z800: Family history of malignant neoplasm of digestive organs

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

    As a Gastroenterologist, Dr. Lah 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. Lah. 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.

    Also known as:

    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy with Polyp Removal
    • Colonoscopy with Biopsy
    • Colonoscopy with Hemorrhoid Ligation
    • Colonoscopy with Bleeding Control
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening
    • Hemorrhoid Banding
    • Colon Exam with Ligation
    • Endoscopic Hemostasis
    • Colonoscopy for Bleeding

    CPT Codes:

    • 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
    • 45380: Colonoscopy, flexible; with biopsy, single or multiple
    • 45398: Colonoscopy, flexible; with band ligation(s) (eg, hemorrhoids)
    • 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:

    • Colonoscopy with Injections
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy with Injection
    • Colon Scope with Medication
    • Therapeutic Colonoscopy

    CPT Codes:

    • 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance

    Does Dr. Lah accept my insurance?

    Dr. Lah 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. Lah accept in Fallbrook, CA?

    Dr. Lah in Fallbrook, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Blue Shield of California

    • Centene Corporation

    • Cigna Group

    • CVS Health (formerly Aetna)

    • Kaiser Permanente

    • Medicare

    • OptumRx Administered Payer

    • Other Health Care Provider

    • UnitedHealth Group

    View All Insurances

    Where is Dr. Lah's office located?

    Dr. John Lah also offers virtual visits

    Dr. John Lah's Primary Practice

    521 E Elder St Ste 104

    Fallbrook, CA 92028

    Get Directions

    Dr. John Lah's Practice 2

    15141 Whittier Blvd Ste 260

    Whittier, CA 90603

    Get Directions

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

    Dr. Lah's National Provider Identifier (NPI) number is 1437221272.

    What common questions do patients ask about Dr. Lah?

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

    What is Dr. John Lah's specialty?

    Dr. Lah is a Gastroenterologist near Fallbrook, CA.

    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. John Lah affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Lah is affiliated with Uci Medical Center, Hoag Hospital Newport Beach 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 John Lah accepting new patients in Fallbrook, CA?

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

    Does Dr. John Lah offer online booking?

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

    How can I make an appointment with John Lah?

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

    Which board certifications does Dr. John Lah have?

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

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