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Dr. Klaus Mergener, MD
Gastroenterology* Age 61
Dr. Klaus Mergener, MD
5.0 (3 Ratings)
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Dr. Klaus Mergener, MD is a Gastroenterologist in Edmonds, WA.
Dr. Klaus Mergener, MD
5.0 (3 Ratings)
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Dr. Klaus Mergener, MD

Gastroenterology* Age 61
Edmonds, WA
Accepting new patients
36 years of experience
Dr. Klaus Mergener, MD is a Gastroenterologist in Edmonds, WA.
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About

Dr. Mergener graduated from Ruprecht-Karls-Universitaet Heidelberg, Medizinische Gesamtfakultat in 1989 and completed a residency at Duke University. Dr. Klaus Mergener, MD is a Gastroenterologist in Edmonds, WA and has 36 years experience. Dr. Mergener currently practices at Gastro Health and are affiliated with St. Joseph Medical Center and Swedish Edmonds Campus. Dr. Mergener has experience treating conditions like Hypokalemia among other conditions at varying frequencies. At present, Dr. Mergener received an average rating of 5.0/5 from patients and has been reviewed 3 times. Dr. Mergener's office accepts new patients. Dr. Mergener also speaks French and German. Dr. Mergener is board certified in Gastroenterology and accepts multiple insurance plans.

Explains Conditions Well

Patients said this doctor explains conditions well.

Trustworthy

Patients said this doctor is trustworthy.

Friendly Staff

Patients said the staff was friendly.

Easy Scheduling

Patients said scheduling was easy.

Locations

  1. 1 Gastro Health - Edmonds
    21600 Highway 99, Edmonds, WA 98026
    Icon Directions Right Arrow Directions Phone Icon (253) 366-5872
    Monday
    Open 24 Hours 08:00 - 17:00
    Tuesday
    Open 24 Hours 08:00 - 17:00
    Wednesday
    Open 24 Hours 08:00 - 17:00
    Thursday
    Open 24 Hours 08:00 - 17:00
    Friday
    Open 24 Hours 08:00 - 17:00
    Saturday
    Open 24 Hours 00:00 - 00:00
    Sunday
    Open 24 Hours 00:00 - 00:00

Experience and Background Check

Hypokalemia
Dehydration
Flexible Sigmoidoscopy
Hypokalemia
Dehydration
Flexible Sigmoidoscopy
Hypokalemia
Dehydration
Flexible Sigmoidoscopy
Adult Failure to Thrive
Alcoholic Hepatic Failure
Anemia
  • View other providers who treat Anemia
Ascites
  • View other providers who treat Ascites
Barrett's Esophagus
Bile Duct Obstruction
Cachexia
  • View other providers who treat Cachexia
Cirrhosis
Constipation
Diaphragmatic and Hiatal Hernia
Diarrhea
  • View other providers who treat Diarrhea
Duodenal Ulcer
Dysphagia
Enteritis
Esophageal Varices
Esophagitis
Gallstones
Gastric Ulcer
Gastritis
Gastroesophageal Reflux Disease (GERD)
Gastrointestinal Bleeding
Gastroparesis
Gastroptosis
Hemorrhoids
Infectious Diarrheal Disease
Intestinal Diverticulosis
Intestinal Obstruction
Intestinal Ulcer
Liver Damage from Alcohol
Mallory-Weiss Syndrome
Malnutrition
Non-Alcoholic Fatty Liver Disease
Pancreatitis
Reflux Esophagitis
Retroperitoneum Cancer
Urinary Incontinence
Venous Embolism and Thrombosis
Vitamin_Deficiency
Vomiting Disorders
Arterial Blood Gas Test (ABG)
Bile Duct Procedure
Duodenal Polypectomy
Endoscopy
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Manometry
Rigid Proctosigmoidoscopy
Abdominal Pain
Acidosis
  • View other providers who treat Acidosis
Acute Bronchitis
Acute Deep Vein Thrombosis (DVT)
Acute Gastritis
Acute Lower Respiratory Infection
Acute Pharyngitis
Acute Upper Respiratory Infection
Acute Venous Embolism Thrombosis
ADHD and-or ADD
Alcoholic Cirrhosis
Alcoholic Gastritis
Alcoholic Hepatitis
Alkalosis
All Types of Food Poisoning
Allergic Conjunctivitis
Allergic Rhinitis
Anal or Rectal Pain
Animal Allergies
Anxiety
  • View other providers who treat Anxiety
Arthritis of the Elbow
Arthritis of the Neck
Aspergillosis
Asphyxia and Hypoxemia
Asthma
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Ataxia
  • View other providers who treat Ataxia
Atherosclerosis
Atopic Dermatitis (Eczema)
Autoimmune Hepatitis
Back Pain
Bedsores
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Benign Chronic Pain Syndrome
Bladder Infection
Blood in Urine (Hematuria)
Boerhaave's Syndrome
Bronchiectasis
Bronchitis
Bruise of Face, Scalp, or Neck
Calcium Metabolism Disorders
Candidiasis of Skin and Nails
Canker Sore
Carpal Tunnel Syndrome
Celiac Disease
Cellulitis
Chlamydia Infections
Cholangitis
Chondromalacia
Chronic Anal Fissure
Chronic Cholecystitis
Chronic Deep Vein Thrombosis (DVT)
Chronic Depression (Dysthymia)
Chronic Fatigue Syndrome
Chronic Gastritis
Chronic Neck Pain
Chronic Pain
Chronic Sinusitis
Cold Sore
Colon Cancer
Colorectal Polyp
Common Cold
Congenital Anomaly Intestine
Cough
  • View other providers who treat Cough
Crohn's Disease
Cyclical Vomiting
Cyclical Vomiting Syndrome
Cystic Fibrosis
Deep Vein Thrombosis (DVT)
Diabetes Type 1
Diabetic Polyneuropathy
Diffuse Esophageal Spasm
Dizziness
Down Syndrome
Duodenal Cancer
Duodenitis
Dysentery
Dyslipidemia
Eczema and Contact Dermatitis
Emphysema
Enlarged Prostate (BPH)
Esophageal Achalasia and Cardiospasm
Esophageal Diverticulum
Esophageal Motility Disorders
Esophageal Ulcer
Essential Tremor
Fever
  • View other providers who treat Fever
Fibromyalgia
Folate Deficiency Anemia
Food Poisoning
Gas-Bloat Syndrome
Gastrointestinal Malabsorption
Gastrojejunal Ulcer
Genital Herpes
Genital Warts
Gout
  • View other providers who treat Gout
Headache
  • View other providers who treat Headache
Heartburn
Hepatitis A
Hepatitis B
Hepatitis C
Hepatorenal Syndrome
Hereditary Amyloidosis
Hernia
  • View other providers who treat Hernia
Herpes Simplex Infection
Human Immunodeficiency Virus (HIV)
Hypercalcemia
Hyperkalemia
Hypoglycemia
Hypotension
Hypotension (Excluding Maternal)
Hypothyroidism
Hypoxemia
Ileus
  • View other providers who treat Ileus
Indigestion
Inflammatory Bowel Disease
Insomnia
  • View other providers who treat Insomnia
Interstitial Cystitis
Intertrigo
Intestinal Diverticulitis
Intestinal Fistula
Intestinal Prolapse
Irritable Bowel Syndrome
Itchy Skin
Kidney Infection
Lactose Intolerance
Leg and Foot Ulcers
Leukocytopenia
Long COVID Disorder
Low Back Pain
Magnesium Metabolism Disorders
Malaise and Fatigue
Megacolon
Menstrual Disorders
Migraine
  • View other providers who treat Migraine
Mild Asthma
Mineral Metabolism Disorders
Mood Disorders (Dysthymia and Cyclothymia)
Muscle Cramping
Muscle Spasm
Muscle Weakness
Nail Infection
Nasopharyngitis
Nausea
  • View other providers who treat Nausea
Neck Strain (incl. Whiplash Injury)
Neurogenic Bladder
Noninfectious Gastroenteritis and Colitis
Nosebleed
Obesity
  • View other providers who treat Obesity
Onychomycosis
Osteoarthritis
Osteoarthritis of Foot
Osteoarthritis of Hand
Osteoarthritis of Hand or Wrist
Osteoarthritis of Hip
Osteoarthritis of Hip and Thigh
Osteoarthritis of Knee
Osteoarthritis of Shoulder
Osteoarthritis of Spine
Osteopenia
Osteoporosis
Otitis Media
Overactive Bladder
Overweight
Painful Urination (Dysuria)
Pancreatic Pseudocyst
Patellofemoral Pain Syndrome (PFPS)
Pelvic Abscess
Peptic Ulcer
Pericardial Disease
Peripheral Nerve Disorders
Pharyngitis
Phosphorus Metabolism Disorders
Pinkeye (Conjunctivitis)
Pneumonia
Polymyalgia Rheumatica (PMR)
Polyneuropathy
Polyuria
  • View other providers who treat Polyuria
Proctoptosis
Prostatitis
Purpura
  • View other providers who treat Purpura
Pyloric Stenosis
Radiculopathy
Rash
  • View other providers who treat Rash
Raynaud's Disease
Rectal Prolapse
Rectal Ulcer
Restless Leg Syndrome
Rhabdomyolysis
Ringworm
  • View other providers who treat Ringworm
Rosacea
  • View other providers who treat Rosacea
Sarcoidosis
Sciatica
  • View other providers who treat Sciatica
Scrotal Pain
Secondary Hypertension
Secondary Renovascular Hypertension
Sexually Transmitted Diseases (STDs)
Sickle Cell Disease
Sinus Bradycardia
Sinus Tachycardia
Sinusitis
Sleep Apnea
Small Intestine Infarction
Speech, Language and Learning Disorders
Splenic Infarct
Splenomegaly
Sprains and Strains (incl. Muscle Tear)
Tapeworm Infection
Tension Headache
Tremor
  • View other providers who treat Tremor
Ulcerative Colitis
Unexplained Weight Loss
Upper Digestive Tract Cancer
Urinary Hesitancy
Urinary Stones
Vaginitis or Vaginosis
Venous Compression
Venous Insufficiency
Vertigo
  • View other providers who treat Vertigo
Viral Enteritis
Viral Hepatitis
Viral Infection
Vitamin B Deficiency
Vitamin D Deficiency
Warts
  • View other providers who treat Warts
Wheezing
  • View other providers who treat Wheezing
Yeast Infections
Abscess or Fluid Incision and Drainage
Biliary Drainage
Colonoscopy
Colonoscopy With Polypectomy
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Esophagogastric Fundoplasty
Fecal Occult Blood Test for Colorectal Cancer
Hemorrhoidectomy or Excision of Anal Tags
Immunization Administration
Liver Biopsy
Pancreas Surgeries
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Sigmoidoscopy
Transendoscopic Stent Placement
Upper GI Series

Patient Satisfaction

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

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Patient Reviews
Apr 15, 2025
Extremely competent doctor
Owen — Apr 15, 2025
See more reviews on Healthgrades
Photo: Dr. Klaus Mergener, MD
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Dr. Mergener's Office & Staff

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Experience with Dr. Mergener

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  • How well provider listens and answers questions
  • Hpends appropriate amount of time with patients

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Insurance Accepted

* Please verify this information when scheduling an appointment.
  • MultiPlan PPO
  • Blue Card PPO
  • National (BlueCard) PPO
  • HealthyBlue Advantage
    HealthyBlue 2.0
  • Open Access Plus
    LocalPlus
    Cigna
    Cigna PPO
  • Choice Plus POS II
  • Curative PPO Plus
    Curative PPO
    Curative EPO
  • First Health (Coventry Health Care) PPO

About Me

Biography
  • Dr. Klaus Mergener, MD is a gastroenterologist in Edmonds, WA and has over 35 years of experience in the medical field. He graduated from Ruprecht-Karls-Universitaet Heidelberg, Medizinische Gesamtfakultat in 1989. He specializes in Gastroenterology and Internal Medicine.
Biography
Languages Spoken
French
German
Languages Spoken
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.
Education

Medical Education

Medical Education
  • Ruprecht-Karls-Universitaet Heidelberg, Medizinische Gesamtfakultat
    1989
Medical Education

Board Certifications

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.

Internship

Internship
  • DUKE UNIVERSITY|Duke University Hospital
    1993
Internship

Residency

Residency Hospital
  • Duke University
    1995
Residency Hospital

Fellowship

Fellowship Hospital
  • Duke University Medical Center
    1998
Fellowship Hospital
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Mergener communicate via email?
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Does Dr. Mergener offer telehealth services or virtual visits?
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Does Dr. Mergener offer an online patient portal?
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Does Dr. Mergener have free onsite parking?
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Does Dr. Mergener offer weekend visits?
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Does Dr. Mergener specialize in working with children or adolescents?
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Does Dr. Mergener specialize in working with seniors?
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Does Dr. Mergener specialize in couples therapy?
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Frequently Asked Questions

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. Klaus Mergener, MD. To arrange an appointment, call the number on Dr. Mergener's profile.

Dr. Klaus Mergener, MD is affiliated with St. Joseph Medical Center and Swedish Edmonds Campus.

Yes, Dr. Klaus Mergener, MD holds board certification in Gastroenterology.

Dr. Mergener has over 36 years of healthcare experience.

Hospital Affiliations

  • St. Joseph Medical Center

    1717 S J St, Tacoma, WA

  • Swedish Edmonds Campus

    21601 76th Ave W, Edmonds, WA

Dr. Klaus Mergener, MD

Dr. Klaus Mergener, MD

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Make an appointment

(253) 366-5872
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