Dr. Samuel Iwata, MD

Dr. Samuel Iwata, MD


Gastroenterology | Male | 64 years old

123 reviews| Leave a review
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Care Philosophy

Dr. Iwata specializes in Gastroenterology and practices in Colorado Springs, CO. He practices at 2 locations.

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Dr. Iwata's Experience

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Board Certifications

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Conditions Treated

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Procedures Performed

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Memberships & Professional Affiliations

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Visiting Dr. Iwata

Dr. Iwata accepts 9 insurance carriers

Affiliated Hospitals

Hospital Quality
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Dr. Iwata's Reviews

Likelihood of recommending Dr. Iwata to family and friends
based on 123 total surveys (74 with reviews)
Dr. Iwata's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Reviews (74)
in Colorado Springs, CO |
The place smelled like an outhouse. After waiting for almost an hour, I was led back to a filthy exam room. The doctor walked in wearing a dirty smock. He then forgot my name twice. He was rude and distracted. I walked out and found a better doctor in a cleaner facility.
Denver, CO |
I trusted his expertise completely. Nice man, no arrogance.
in Monument, CO |
My experience was as good as it could be considering what I was there for. Started with a warm blanket and a team of super nice people making sure I knew what to expect, then I went to sleep. When I woke up there was an angel there with a cup of coffee. Dr Iwata came in and gave me the results and I went home. Thank you, to everyone.
Colorado Springs, CO |
Dr. Iwata was professional and thorough. Great bed side manner, answered all questions in a caring way. Nice man.
in Colorado Springs, Co |
Dr Iwata is the best by far. He is so professional and kind. I was nervous but he made me feel totally at ease. He cares about his patients very much. You could not ask for a smarter dr to be in charge of your care. Our family has used Dr Iwata for over 25 years.
in Colorado Springs, CO |
I could not believe how this man lied about everything. Not a word out of his mouth turned out to be true. At this point I'm not sure if his name is really Iwata. Do NOT go here. Sam Iwata is a liar.
colorado springs, co |
Excellent, professional doctor. I always recommend him. Hope he doesn't retire.
in Colorado Springs, CO |
Only see this "doctor" if you want to be lied to and have your concerns laughed at.
in Colorado Springs, CO |
Simply the worst doctor I've ever seen. He lied to me about everything
in Colorado springs. CO |
Dr iwata respectively agreed to perform a upper. GI scope on me without drugs "anesthesia" he definitely knows what he is doing and very good at it. His assistant and himself talked me through the operation and I didn't get hurt at all. Thank you caring for me and my life like it were yours. Your are a very good doctor .
Colorado Springs, CO |
I had my procedure in October and this survey was sent in February. I do not some of the nuances of these questions since so much time has passed. The one question of spending time with patient is funny since I met him after being wheeled into the operating room and that was it. But I'm okay with that since my colon was fine.
in Colorado Springs, CO |
It is likely that I recommend Dr. Iwata to family and friends.
Colorado Springs, CO |
Dr. Iwata is very patient and listens - he always explains things and answers all my questions. He is very caring and I have every confidence that he will help me in any way he can.
in Mount Pleasant, SC |
My gastroenterologist for the past 20 years. He and his PAs took the BEST care of me. He will always have my highest recommendation.
in Colorado Springs |
Given that the colonoscopy procedure is an unpleasant ordeal by its very nature, Dr. Iwata and his staff succeed at minimizing any unpleasantries. They seemed quite compassionate, professional and capable. Their process appeared to be geared toward making the patient feel comfortable, and assured. I was fully anesthetized during the procedure, (which I prefer), and awoke in a private room where my wife was waiting for me to awaken. I felt no pain or discomfort at all.
in Colorado Springs, CO |
I have been a patient for over 15 years and had excellent service and care.
in Colorado Springs |
I would highly recommend Dr. Iwata! He is obviously knowledgeable and presents a calm, compassionate manner. He empowers his patients to make their own decisions about their care and offers gentle guidance without pressure. Very kind man!
in Colorado Springs, CO |
No complaints, professionally taken care of
Colorado Springs, CO |
Dr. Iwata is an excellent physician. He is knowledgeable, capable, personable, and on time! I found my experiences with him to be beneficial in all regards. I'd highly recommend Dr. Iwata.
Colorado Springs, CO |
Wonderful, quick, efficient!
in Colorado Springs, CO |
Dr. Folan did my procedure not Dr. Iwata. I need an explanation of what was shown in one of my photographs stating "mild diverticulitus". It appears there was something unnatural there in that photograph.
in Colorado Springs, CO |
Dr Iwata is an excellent physician. He has a considerate bedside manner that can only be compared to Doctor Woodell (my previous Gastroenterologist). Dr Woodell retired many years ago and was the protege of the first Gastrointerologist in Colorado Springs, Dr Smith (my first). I only need to see Dr Iwata every three years, now, since my other (related) problem is well controlled.
in Colorado Springs, CO |
Dr. Iwata has been my physician for many years now. He has always been quite professional and thorough in his explanations about my care. When he felt I could be more adequately followed by a physician in Denver, he explained to me all the details and why he felt this way. I trust Dr. Iwata's medical expertise and his judgment calls. Yes, I would recommend his care to any of my friends and/or family.
Colorado Springs, CO |
I have had several colonoscopies performed by Dr. Iwata. Not only is he a wonderful doctor with a calm and soothing bedside manner, he thoroughly informed me about what would be happening during the procedure. His entire wonderful staff also put me at ease. At a rating of 1 to 100, I would give Dr. Iwata at least a 500 ! ! !
in Colorado Springs, CO |
I could not be more pleased with the care. Excellent in all phases.
in Colorado Springs, CO |
Dr. Iwata was very thorough during my examination. He listened to my concerns and didn't make me feel like he was in a hurry to see another patient.
in Colorado Springs, CO |
Great, friendly, professional, good communicator, caring.
Colorado Springs, CO |
Always kind, respectful and competent.
in Colorado Springs CO |
It was very pleasant. He explained everything to me and had test done
in Monument, CO |
Very good bedside manner. Explained everything in detail. Very competent.
in Colorado Springs, CO |
The entire process is great. Support staff are very attentive. Good communication about entire procedure.
in Colorado Springs, CO |
Dr. Iwata is VERY compassionate, understanding and explains everything in a manner that is easy to understand. His staff is incredible, goes out of their way to insure your comfort in a VERY caring manner! I trust Dr. Iwata and his staff completely! I feel safe and cared for in all of their hands! If you are looking for a top of the line doctor and staff....Dr. Iwata and his crew fits the bill! Thank-you for your services, knowledge and high degree of care & compassion!
Colorado Springs, CO |
Kind and caring doctor who doesn't try to bamboozle you with jargon. He spends time with each patient and it is clear that he cares about each one.
in Colorado Springs, CO |
He is very friendly and professional. I felt at ease and that I was going to be well taken care of.
in Monument, CO |
Dr. Iwata and the staff are incredibly professional, kind, respectful and friendly! They answered all my questions while preparing me for my procedure and didn't skip a beat! It's obvious those folks love what they do and work quite well together as they dance around each other to get the job done! I have some anatomical challenges that made me a little fearful of this procedure, but Dr. Iwata found no obstacles throughout and listened very closely to my concerns! Great Experience & outcome!
in Monument, CO |
Dr. Iwata was very cordial and shared the procedure process before beginning and the results after the procedure in good detail. He built confidence explaining his experience.
in Colorado Springs, CO |
Calming, assured, confident.
in Colorado Springs, CO |
Dr, Iwata is so kind and professional.
in Colorado Springs, CO |
Dr Iwata was very thorough in ascertaining my needs for requesting the tests that my primary physician ordered. He then was able to share with me his opinions on my needs and discuss with me his reasoning and best practices. He listened well and was not hurried during the consult . My questions were respected and given thoughtful replies. Ultimately I felt very confident about the decisions reached and my impending procedure.
in Divide, CO |
Caring, thorough, expert.
in Monument, CO |
Dr. Iwata is a very caring physician. He describes the procedures well and very cautious regarding his careplan making sure all issues are addressed appropriately.
in Colorado Springs, CO |
Dr Iwata explains everything very clearly so that I can understand exactly what is happening and what the results are. He always answers my questions.
in Colorado Springs, CO |
I have been fortunate enough to have had Dr. Iwata a couple of times throughout the last few years and would not have wanted anyone else. He makes you comfortable and makes sure you understand everything. Never makes you feel like he is in a hurry.
Charlotte, NC |
Dr. Iwata is great!!!
in Colorado Springs, CO |
I have been a patient of Dr. Iwata for six or seven years. I have been impressed with Dr. Iwata and his staff since day one. The quality of service and professional care I have received is the best. I have been recommending Dr. Iwata and his staff you years, and recommend this facility to everyone.
Colorado Springs, CO |
Dr Iwata is interested in you. He asks about any issues or questions you have, then discusses them with options for you without putting you down.
Monument, CO |
Everyone at GACS is pleasant and works to bring an unpleasant procedure to a quick end.
in Colorado Springs, CO |
Dr. Iwata has been in this field for years, and has much experience.
in Monument, CO |
in Colorado Springs, CO |
Very friendly and efficient practice.
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Dr. Iwata's experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Gastroenterology
  •  Board certified in Gastroenterology and Internal Medicine
  •  No malpractice claims found
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
    What is a recognized doctor
  • Media & Publications

    Dr. Iwata has no media or publications listed.

Background Check

  • 0
    Malpractice Claims

    No malpractice history found for Colorado.

    What is medical malpractice
  • 0

    No sanctions history found for the years that Healthgrades collects data.

    What is a sanction or disciplinary action
  • 0
    Board Actions

    No board actions found for the years that Healthgrades collects data.

    What are board actions

Board Certifications

Why It Matters: Dr. Iwata's Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Gastroenterology
  • Internal Medicine

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Anal or Rectal Pain
  • Anemia
  • Autoimmune Diseases
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Blood Disorders
  • Cancer
  • Celiac Disease
  • Cholecystitis and Gallstones
  • Cirrhosis
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysphagia
  • Enteritis
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Diseases
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gas-Bloat Syndrome
  • Gastric Ulcer
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Gastroparesis
  • Heartburn
  • Hemochromatosis
  • Hemorrhoids
  • Hepatitis B - Immune Response
  • Hernia
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Lactose Intolerance
  • Liver Damage from Alcohol
  • Nausea
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Reflux Esophagitis
  • Stomach Cancer
  • Stomach Diseases
  • Stomach and Small Intestine Cancer
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Vascular Insufficiency of Intestines
  • Vomiting Disorders


  • Medical School
    University of Colorado At Denver

    Graduated in 1979

  • Internship Hospital
    Maricopa Co Med Center

    Completed in 1980

  • Residency Hospital
    Maricopa Co Med Center

    Completed in 1982

    University NM

    Completed in 1984

  • Fellowship Hospital
    University of New Mexico / Main Campus

    Completed in 1984

  • Undergraduate School
    University Of Colorado

    Graduated in 1973

Languages Spoken

  • English

Memberships &
Professional Affiliations

Dr. Iwata does not have any memberships or affiliations listed. If you are Dr. Iwata and would like to add memberships or affiliations, please update your free profile.


  • Gastroenterology

Procedures Performed

  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Gastroenterology Procedures
  • Liver Biopsy
  • Manometry