Summary

Dr. William Kelley is a gastroenterologist with 27 years of experience helping patients with digestive health concerns. He earned his medical degree from Stanford University School of Medicine, bringing extensive knowledge to his specialty practice. Dr. Kelley focuses on diagnosing and treating conditions affecting the digestive system, from routine screenings to complex gastrointestinal disorders.

Dr. Kelley practices at multiple locations in Hillsboro, Oregon, including OHSU Health Hillsboro Medical Center and Kaiser Permanente Westside Medical Center. He commonly treats patients with colon polyps, GERD, and acid reflux. His procedural expertise includes performing colonoscopies and both upper and lower GI endoscopies to help diagnose and monitor digestive conditions. Patients have given him an average rating of 3.1 on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.1
  • 27 years of experience
  • Stanford University School Of Medicine
  • 8 written reviews
  • 1 specialty
  • 10 areas of expertise
  • 1 board certification
  • 2 hospital affiliations
  • 3 office locations
  • Male

Office Locations

Dr. William Mark Kelley has 3 locations

Tuality Digestive Health And General Surgery

333 SE 7th Ave Ste 5200Hillsboro, OR 97123
Mon8:00 am - 4:00 pm
Tue8:00 am - 4:00 pm
Wed8:00 am - 4:00 pm
Thu8:00 am - 4:00 pm
Fri8:00 am - 4:00 pm
SatClosed
SunClosed

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Dr. William Mark Kelley, MDDr. Zibing Jiang Woodward, MDDr. Bethel Flores, NDDr. Benjamin Mark Hornung, MD
GastroenterologyGastroenterologyNaturopathyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.1 
27 Years of Experience 17 Years of Experience 12 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English
Hillsboro , ORTualatin , ORHILLSBORO , ORPortland , OR
Med School: Stanford University School Of Medicine Med School: University Of Minnesota Medical School Med School: University Of Kansas School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. William Mark Kelley

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. William Mark Kelley has the following specialty

Specialty Expertise

Dr. William Mark Kelley has the following 10 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Hemorrhoids
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

27 Years Experience

Dr. William Mark Kelley holds an expired medical license in the state of Oregon.

Medical License

Medical Doctor with an expired medical license in the state of Oregon that expired in 2025.

Education & Training

Medical School

Graduated from Stanford University School Of Medicine in 1999.

NPI Number

Dr. Kelley's NPI number is 1164477105.

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Frequently Asked Questions

How can I make an appointment with Dr. William Kelley?
You can find contact information for Dr. William Kelley here on Vitals.
Is Dr. William Kelley accepting new patients?
Dr. William Kelley is accepting new patients on Vitals. View Dr. William Kelley's profile on Vitals to make an appointment.
Does Dr. William Kelley accept my insurance?
You can see the insurance plans that Dr. William Kelley accepts on their Vitals profile.
Which hospitals is Dr. William Kelley affiliated with?
Dr. William Kelley is affiliated with Ohsu Health Hillsboro Medical Center and Kaiser Permanente Westside Medical Center.
Where is Dr. William Kelley's office located?
Dr. William Kelley's office is located at 333 SE 7th Ave Ste 5200, Hillsboro, OR, 97123.

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