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Dr. Ronald Lew, MD
Gastroenterology* Age 56
Dr. Ronald Lew, MD
5.0 (1 Ratings)

Offers telehealth
Map Pin Small Tualatin, OR
Dr. Ronald Lew, MD is a Gastroenterologist in Tualatin, OR.
Dr. Ronald Lew, MD
5.0 (1 Ratings)

Dr. Ronald Lew, MD

Gastroenterology* Age 56
Tualatin, OR
Accepting new patients
31 years of experience

Offers telehealth

Dr. Ronald Lew, MD is a Gastroenterologist in Tualatin, OR.

About Dr. Ronald Lew, MD

Dr. Lew graduated from New York University Grossman School of Medicine. Dr. Ronald Lew, MD is a Gastroenterologist in Tualatin, OR and has 31 years experience. Dr. Lew currently practices at The Oregon Clinic Gastroenterology South - Tualatin and is affiliated with Providence Willamette Falls Medical Center, Providence Portland Medical Center, Providence Newberg Medical Center and Legacy Meridian Park Medical Center. Dr. Lew's office accepts new patients and telehealth appointments. Dr. Lew is board certified in Gastroenterology and accepts multiple insurance plans.

Experience Check

Enter a condition or procedure
Ulcerative Colitis
Intestinal Ulcer
Congenital Anomaly Intestine
Ulcerative Colitis
Intestinal Ulcer
Congenital Anomaly Intestine
Ulcerative Colitis
Intestinal Ulcer
Congenital Anomaly Intestine
Inflammatory Bowel Disease
Gastroparesis
Constipation
Rigid Proctosigmoidoscopy
Flexible Sigmoidoscopy
Intestinal Obstruction
Barrett's Esophagus
Barretts Esophagus with Dysplasia
Cirrhosis
Nausea
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Gastroptosis
Diaphragmatic and Hiatal Hernia
Endoscopy
Gastritis
Hepatitis C
Gastroesophageal Reflux Disease (GERD)
Liver Damage from Alcohol
Intestinal Diverticulosis
Alcoholic Cirrhosis
Irritable Bowel Syndrome
Hemorrhoids
Biliary Cirrhosis
Primary Biliary Cholangitis
Duodenal Polypectomy
Vomiting Disorders
Abdominal Pain
Metabolic Dysfunction Associated Steatotic Liver Disease (MASLD)
Dysphagia
Colonoscopy
Reflux Esophagitis
Gallstones
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Noninfectious Gastroenteritis and Colitis
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Anal or Rectal Pain
Diarrhea
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Esophagitis
Pancreatitis
Colorectal Polyp
Esophageal Motility Disorders
Upper Digestive Tract Cancer
Esophageal Varices
Laparoscopic Removal of Stones from Biliary Tract
Retroperitoneum Cancer
Crohn's Disease
Bile Duct Obstruction
Congenital Anomaly Esophagus
Gastrointestinal Bleeding
Gastric Ulcer
Chronic Gastritis
Pancreas Surgeries
Sigmoidoscopy
Ileus
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Ascites
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Duodenal Ulcer
Colon Cancer
Acute Gastritis
Alcoholic Fatty Liver
Alcoholic Hepatitis
Benign Neoplasm of the Digestive System
Biliary Atresia
Bowel Strangulation
Celiac Disease
Cholangitis
Cholecystitis and Gallstones
Chronic Cholecystitis
Colitis
  • View other providers who treat Colitis
Colorectal Cancer
Congenital Achalasia
Congenital Anomaly Bile Duct
Dehydration
Diffuse Esophageal Spasm
Digestive Disorders
Diverticulitis
Diverticulosis
Duodenal Cancer
Duodenitis
Enteritis
Eosinophilic Esophagitis
Esophageal Achalasia and Cardiospasm
Esophageal Cancer
Esophageal Dilation
Esophageal Diverticulum
Esophageal Ulcer
Familial Adenomatous Polyposis
Gas-Bloat Syndrome
Gastrointestinal Malabsorption
Gastrojejunal Ulcer
Heartburn
Hemochromatosis
Hepatitis B
Hepatitis B - Immune Response
Hernia
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Hiatal Hernia
Hypokalemia
IBS Associated With Inflammatory Bowel Disease
Indigestion
Infectious Diarrheal Disease
Intestinal Diverticulitis
Intestinal Malabsorption Carbohydrate
Ischemic Colitis
Lactose Intolerance
Malnutrition
Meckel's Diverticulum
Mesenteric Lymphadenitis
Mesenteric Panniculitis
Neoplasm of Gastrointestinal Tract
Non-Neonatal Jaundice
Pancreatic Pseudocyst
Pelvic Abscess
Peptic Ulcer
Pouchitis
Primary Sclerosing Cholangitis
Pyloric Stenosis
Rectal Ulcer
Splenomegaly
Stomach and Small Intestine Cancer
Stomach Cancer
Stomach Stenosis
Vascular Insufficiency of Intestines
Viral Enteritis
Viral Hepatitis
Vitamin_Deficiency
Bile Duct Procedure
Biliary Drainage
Capsule Endoscopy
Colon Cancer Screening
Colonoscopy With Polypectomy
Colorectal Cancer Screening
Endoscopic Billiary Stone Removal
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Esophageal pH Monitoring
Esophageal Stenting
Impedance Testing
Liver Biopsy
Proctosigmoidoscopy
VAP Lipid Testing
Wireless pH Testing

Accepted Insurance Plans

* Please verify this information when scheduling an appointment.
  • Premier Care Network Plus - Innovation Health
    Open Choice PPO
    Choice Plus POS II
    APCN Choice POS II
    Elect Choice (Open Access) EPO
    Managed Choice (Open Access) POS
  • Connexus PPO
  • LocalPlus
    Open Access Plus
    Cigna PPO
  • Heritage Prime HMO
    Heritage Signature
  • First Health (Coventry Health Care) PPO
  • Preferred Provider Network PPN
    Individual and Family Network
  • BlueCard PPO
  • HealthyBlue Advantage
  • Navigate Plus POS
    Choice Plus POS
    Options PPO
    Navigate HMO
  • First Choice Health PPO
  • Preferred - OR

Where Dr. Ronald Lew, MD Sees Patients

  1. 1 The Oregon Clinic Gastroenterology South - Tualatin
    19250 SW 90th Ave, Tualatin, OR 97062
    Icon Directions Right Arrow Directions Phone Icon (503) 692-3750
    Monday
    07:00 - 17:00
    Tuesday
    07:00 - 17:00
    Wednesday
    07:00 - 17:00
    Thursday
    07:00 - 17:00
    Friday
    07:00 - 17:00
    Saturday
    Closed
    Sunday
    Closed
  2. 2 The Oregon Clinic Gastroenterology South - Oregon City
    1508 Division St Ste 15, Oregon City, OR 97045
    Icon Directions Right Arrow Directions Phone Icon (503) 692-3750

What Patients Say

Likelihood to recommend Dr. Lew
5.0
Based on 1 Reviews
5 Stars (1)
4 Stars (0)
3 Stars (0)
2 Stars (0)
1 Star (0)

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Patient Reviews
Aug 29, 2025
Dr. Lew explained everything that I needed to know for my condition and the next steps. I would have stayed with Dr. Lew for my procedures, except I was admitted to the ER of a hospital he isn’t at—luckily his associates from a different Oregon Clinic could fill in. I really appreciate that Dr. Lew was able to consult with me so quickly. It was a very early morning appointment so I’m thinking he might have come in early to accommodate me.
— Aug 29, 2025
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Telehealth Options
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(503) 692-3750

Meet Dr. Ronald Lew, MD

Specialties*
Gastroenterology
Internal Medicine
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Lew communicate via email?
2 users said yes.
Yes
(2)
No
(0)
Does Dr. Lew offer telehealth services or virtual visits?
2 users said yes.
Yes
(2)
No
(0)
Does Dr. Lew offer an online patient portal?
4 users said yes.
Yes
(4)
No
(0)
Does Dr. Lew have free onsite parking?
2 users said yes.
Yes
(2)
No
(0)
Does Dr. Lew offer weekend visits?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Lew offer evening visits?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Lew specialize in working with children or adolescents?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Lew specialize in working with seniors?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Lew specialize in couples therapy?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Lew specialize in working with LGBTQ+ community?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Lew accept insurance?
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(0)
No
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FAQs About Dr. Lew's Practice

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Ronald Lew, MD. To arrange an appointment, call the number on Dr. Lew's profile.

Dr. Ronald Lew, MD is affiliated with Providence Willamette Falls Medical Center, Providence Portland Medical Center, Providence Newberg Medical Center and Legacy Meridian Park Medical Center.

Yes, Dr. Ronald Lew, MD holds board certification in Gastroenterology.
Training & Medical Education
Medical Education
  • New York University Grossman School of Medicine
    1995
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.
Fellowship Hospital
  • Perelman School of Medicine University of Pennsylvania|University of Pennsylvania|University of Pennsylvania Perelman School of Medicine
    2001
Fellowship Hospital

Hospitals Where Dr. Ronald Lew, MD Practices

  • Providence Willamette Falls Medical Center

    1500 Division St, Oregon City, OR

  • Providence Portland Medical Center

    4805 NE Glisan St, Portland, OR

  • Providence Newberg Medical Center

    1001 N Providence Dr, Newberg, OR

  • Legacy Meridian Park Medical Center

    19300 SW 65th Ave, Tualatin, OR

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