Summary

Dr. Klaus Mergener is a gastroenterologist and internal medicine specialist who brings 37 years of medical expertise to patient care. He earned his medical degree from Medizinische Fakultaet Heidelberg Ruprecht-Karls-Universitaet Heidelberg in Germany and completed his residency training at Duke University Hospital. His extensive experience in digestive health allows him to provide comprehensive care for a wide range of gastrointestinal conditions. Dr. Mergener speaks Spanish and German in addition to English, helping him connect with patients from diverse backgrounds.

Dr. Mergener practices at multiple locations across Washington and South Dakota, with hospital affiliations including Swedish Edmonds Hospital, Multicare Tacoma General Hospital, and Avera McKennan Hospital. He specializes in treating conditions such as colon polyps, gastritis, and upper gastrointestinal bleeding. His procedural expertise includes performing colonoscopies and lower gastrointestinal endoscopy procedures to help diagnose and treat digestive disorders. Dr. Mergener also conducts pathology tests to provide patients with accurate diagnoses and effective treatment plans.
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Quick Facts

  • accepting new patients
  • 37 years of experience
  • speaks Spanish, German
  • Duke University Hospital
  • 2 specialties
  • 11 areas of expertise
  • 2 board certifications
  • 8 hospital affiliations
  • 7 office locations
  • Male

Office Locations

Dr. Klaus D Mergener has 7 locations

Gastro Health Edmonds

21600 Highway 99 Ste 260Edmonds, WA 98026
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Edmonds Endoscopy Center

21600 Highway 99 Ste 220Edmonds, WA 98026
Mon10:00 am - 5:00 pm
Tue10:00 am - 5:00 pm
Wed10:00 am - 5:00 pm
Thu10:00 am - 5:00 pm
Fri10:00 am - 5:00 pm
SatClosed
SunClosed

Avera Childrens Hospital

1325 S Cliff AveSioux Falls, SD 57105

Avera Medical Group Gastroenterology

6100 S LOUISE AVE STE 3100SIOUX FALLS, SD 57108
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Avera Specialty Hospital

6100 S Louise AveSioux Falls, SD 57108

Confluence Health Wenatchee Valley Hospital

820 N Chelan AveWenatchee, WA 98801

Swedish Edmonds Hospital

21601 76th Ave WEdmonds, WA 98026

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Dr. Klaus D Mergener, MDJi Soo Choi, APRNDr. Suzanne Gwen Watnick, MDDr. Syed Muhammad Tayyab, MD
GastroenterologyGastroenterologyNephrologyHospital Medicine
Accepts New Patients Accepts New Patients
3.7 
37 Years of Experience 31 Years of Experience 18 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks Spanish, German Speaks English
Edmonds , WASACRAMENTO , CASeattle , WASavannah , GA
Med School: Medizinische Fakultaet Heidelberg Ruprecht-Karls-Universitaet Heidelberg Med School: New York University Med School: University Of Massachusetts Medical School Med School: Aga Khan University Medical College
Current Profile
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Insurance Plans Accepted by Dr. Klaus D Mergener

  • Accepts Medicare

Medical Specialties

Dr. Klaus D Mergener has the following 2 specialties

Specialty Expertise

Dr. Klaus D Mergener has the following 11 areas of expertise

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

Certifications, License, & Education

37 Years Experience

MEDICAL LICENSE

Medical Doctor, South Dakota, 2027, Active
Medical Doctor, Washington, 2027, Active

EDUCATION & TRAINING

Residency

Duke University Hospital

Medical School

Medizinische Fakultaet Heidelberg Ruprecht-Karls-Universitaet HeidelbergGraduated in 1989

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Frequently Asked Questions

What languages does Dr. Klaus Mergener speak?
Dr. Klaus Mergener speaks Spanish and German.
How can I make an appointment with Dr. Klaus Mergener?
You can find contact information for Dr. Klaus Mergener here on Vitals.
Does Dr. Klaus Mergener accept virtual/telehealth appointments?
Dr. Klaus Mergener has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Klaus Mergener's office located?
Dr. Klaus Mergener's office is located at 21600 Highway 99 Ste 260, Edmonds, WA, 98026.
Which hospitals is Dr. Klaus Mergener affiliated with?
Dr. Klaus Mergener is affiliated with Multicare Tacoma General Hospital, Multicare Allenmore Hospital, Swedish Edmonds Hospital, Samaritan Healthcare, Confluence Health Hospital Central Campus, Avera Mckennan Hospital And University Health Center, Confluence Health Wenatchee Valley Hospital, and Avera Specialty Hospital.

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