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Dr. John Lah, MD

Gastroenterology*
3.0 (21)
Map Pin Small Whittier, CA
Accepting new patients
24 years of experience

Offers telehealth

Overview of Dr. John Lah, MD

Dr. John Lah, MD is a Gastroenterology Specialist in Whittier, CA. They specialize in Gastroenterology, has 24 years of experience, and is board certified in Gastroenterology. They graduated from NEW YORK Medical College and is affiliated with PIH Health Whittier Hospital, Hoag Hospital Newport Beach and Los Alamitos Medical Center. Patients rated Dr. Lah an average 3.0 star rating.

Dr. Lah works at Practice in Whittier, CA with other offices in Los Alamitos, CA and Fountain Valley, CA. They are accepting new patients and accept Aetna, Anthem Blue Cross and Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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User Ratings (of at least 4.0)
Insurance Accepted
Headshot Available
Accepting New Patients
Conditions Treated and Procedures Performed

Dr. Lah's Office Locations

  1. 1
    Digestive Health Washington Medical Office Building
    12291 Washington Blvd Ste 201, Whittier, CA 90606 Icon Directions Right Arrow Directions Phone Icon (562) 947-8478
  2. 2
    Prohealth Partners A Medical Group
    3851 Katella Ave Ste 205, Los Alamitos, CA 90720 Icon Directions Right Arrow Directions Phone Icon (562) 430-4449
  3. 3
    Ronald J Policastro MD Inc
    18111 Brookhurst St Ste 5200, Fountain Valley, CA 92708 Icon Directions Right Arrow Directions Phone Icon (714) 962-7705

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • PIH Health Whittier Hospital
  • Hoag Hospital Newport Beach
  • Los Alamitos Medical Center

Experience & Treatment Frequency

NEW FEATURE

What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Gastritis
Chronic Gastritis
Manometry

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Gastritis
Chronic Gastritis
Manometry
Abdominal Pain
Anemia
  • View other providers who treat Anemia
Cirrhosis
Colorectal Polyp
Constipation
Diaphragmatic and Hiatal Hernia
Duodenitis
Dysphagia
Esophageal Motility Disorders
Gallstones
Gastroesophageal Reflux Disease (GERD)
Gastroptosis
Hemorrhoids
Intestinal Diverticulosis
Intestinal Ulcer
Liver Damage from Alcohol
Non-Alcoholic Fatty Liver Disease
Noninfectious Gastroenteritis and Colitis
Pancreatitis
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Duodenal Polypectomy
Endoscopy (Esophagus, Stomach, Small Intestine)
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Flexible Sigmoidoscopy
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Rigid Proctosigmoidoscopy
Acute Gastritis
Alcoholic Cirrhosis
Anal or Rectal Pain
Ascites
  • View other providers who treat Ascites
Barrett's Esophagus
Benign Neoplasm of the Digestive System
Celiac Disease
Congenital Achalasia
Copper Metabolism Disorders
Crohn's Disease
Dehydration
Diarrhea
  • View other providers who treat Diarrhea
Duodenal Ulcer
Dysentery
Enteritis
Eosinophilic Esophagitis
Esophageal Achalasia and Cardiospasm
Esophageal Diverticulum
Esophageal Ulcer
Esophageal Varices
Esophagitis
Familial Adenomatous Polyposis
Food Allergy
Gas-Bloat Syndrome
Gastric Ulcer
Gastrointestinal Bleeding
Gastrointestinal Malabsorption
Gastroparesis
Heartburn
Hemochromatosis
Hepatitis A
Hepatitis B
Hepatitis B - Immune Response
Hepatitis C
Hepatorenal Syndrome
Hernia
  • View other providers who treat Hernia
Hiatal Hernia
Ileus
  • View other providers who treat Ileus
Indigestion
Inflammatory Bowel Disease
Intestinal Diverticulitis
Intestinal Obstruction
Irritable Bowel Syndrome
Ischemic Colitis
Lactose Intolerance
Mallory-Weiss Syndrome
Malnutrition
Megacolon
Nausea
  • View other providers who treat Nausea
Neoplasm of Gastrointestinal Tract
Non-Neonatal Jaundice
Pelvic Abscess
Peptic Ulcer
Pouchitis
Primary Biliary Cholangitis
Primary Sclerosing Cholangitis
Pyloric Stenosis
Reflux Esophagitis
Retroperitoneum Cancer
Stomal Ulcer
Ulcerative Colitis
Unexplained Weight Loss
Upper Digestive Tract Cancer
Viral Enteritis
Viral Hepatitis
Viral Infection
Vomiting Disorders
Biliary Drainage
Colon Cancer Screening
Colorectal Cancer Screening
Fecal Impaction Removal
Gallbladder Scan
Hepatitis A Screening
Hepatitis B Virus Screening
Hepatitis C Virus Screening
Hepatitis Screening
Impedance Testing
Instrumental Diagnostic Evaluation for Dysphagia
Laparoscopic Removal of Stones from Biliary Tract
Liver Biopsy
Liver Function Test
pH Probe
  • View other providers who treat pH Probe
Screening Colonoscopy
Ultrasound, Endoanal
Ultrasound, Esophageal
VAP Lipid Testing
Wireless pH Testing
Check your insurance
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    View All Accepted Carriers

    • Aetna
    • Anthem Blue Cross
    • Blue Cross Blue Shield
    • Blue Cross Blue Shield of California
    • Blue Shield of California
    • Cigna
    • Health Net
    • Humana
    • Oscar Health
    • UnitedHealthCare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    3.0
    Average provider rating
    Based on 21 ratings
    Patient Ratings (21)
    5 Star
    (8)
    4 Star
    (2)
    3 Star
    (1)
    2 Star
    (1)
    1 Star
    (9)
    Leave a review

    How was your appointment with Dr. Lah?

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    Photo: Dr. John Lah, MD
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    • Likelihood of recommending Dr. Lah to family and friends

    Dr. Lah's Office & Staff

    • Ease of scheduling urgent appointments
    • Office environment, cleanliness, comfort, etc.
    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. Lah

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. John Lah, MD

    Specialties*
    • Gastroenterology

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 24 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1437221272
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Medical Education
    • NEW YORK Medical College
    Medical Education
    Board Certifications
    • Gastroenterology
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. John Lah, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Lah is offering online scheduling or call the provider’s office for more information.

    Dr. Lah has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    21 patients have reviewed Dr. Lah. The overall rating for this provider is 3.0. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Lah.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Lah, there are benefits to both methods. A person calling to schedule an with Dr. Lah appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

    Telehealth Options
    This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Lah, or would you like to choose another provider and have an online appointment right now?
    Find provider online now
    Call now to make an appointment
    (562) 947-8478

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