Patrick T. Koo, MD
Fullerton, CA 92835
- Mission Heritage Medical Group and Affiliated Physicians
- St. Joseph Heritage Medical Group and Affiliated Physicians
- St. Jude Heritage Medical Group and Affiliated Physicians
St. Jude Heritage Fullerton - Gastroenterology
1837 Sunny Crest Drive, Fullerton, CA 92835
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- Blue Shield of CA HMO – Trio
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About Patrick T. Koo
Dr. Patrick T Koo is an Internal Medicine Specialist in Fullerton, California. He graduated with honors from Pennsylvania State University College Of Medicine in 2012. Having more than 8 years of diverse experiences, especially in Gastroenterology, Dr. Patrick T Koo affiliates with many hospitals including St Jude Medical Center.
Pennsylvania State University - College of Medicine
2012
Case Western Reserve University
2013
Case Western Reserve University
2015
University of California Davis Medical Center
2018
- American Board of Internal Medicine Internal Medicine, Internal Medicine
- American Board of Internal Medicine Gastroenterology, Gastroenterology
- American Board of Internal Medicine, Internal Medicine
- American Board of Internal Medicine, Gastroenterology
Providence St. Jude Medical Center
Community Reviews
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As part of ensuring you have a positive experience with Providence, our online provider directory includes ratings and patient comments for select providers. More about our survey.
Dr. Koo is my new gastroenterologist. He is not my primary doctor. He was exceptionally nice and listened closely to my concerns.
Providence Patient
Every thing is okay
Providence Patient
Excellent Dr Koo explained everything to me,told me what I need to do,lose weight,exercise, drinkain k lots of water
Providence Patient
Good
Providence Patient
Very Very good
Providence Patient
Good
Providence Patient
All health care providers are knowledgeable, courteous and made me feelLike they understood and cared about my concerns.
Providence Patient
Seems in a hurry to end appointment. He is eager to send me off to [ID] or Los Angeles, but no explanation of the process.
Providence Patient
Very friendly and professional
Providence Patient
Dr. Koo saw me right away, and found a way to squeeze me into his procedure schedule so I could have the procedure done that I needed. He was knowledgeable, listened to my concerns, and we agreed on the path forward. He was very helpful.
Providence Patient
Very satisfying
Providence Patient
My husband and I chose Dr. Koo for the excellent reviews read and heard from others. I was very impressed with the efficiency of his staff to make appointment scheduling and initial consultation occur on time. My husband and I found Dr. Koo to be very pleasant, informative, and helpful to put to rest any concerns we had.
Providence Patient
This is my first visit via freinds recommendation. It was awesome!
Providence Patient
Very good service
Providence Patient
Very good experience with Dr. Koo. He took me as a patient very quickly and started with a plan to care for me.
Providence Patient
Very satisfied.
Providence Patient
Nothing bad. Very informative appt.
Providence Patient
He's nice Dr
Providence Patient
Attentive, respectful. Addressed my concern.
Providence Patient
Dr. Koo has a good bedside manner and listens and doesn't rush through your appointment
Providence Patient
Excellent care.
Providence Patient
Dr. Koo is by far the best doctor I have ever had, he has my disease in remission and he really and truly cares about his patience and their well-being, Dr. Koo is a great doctor.
Providence Patient
Dr. Koo was excellent I would recommend him to anyone
Providence Patient
So kind
Providence Patient
Very Good
Providence Patient
Always a good experience
Providence Patient
Answered all questions I had, great doctor and staff
Providence Patient
I had a good experience with doctor Koo
Providence Patient
I am very Happy with this doctor!
Providence Patient
Very knowledgeable and found PBC diagnosis when no other doctor even looked for the last 30 years
Providence Patient
Great medical specialist
Providence Patient
Dr Koo always thoughtful and thorough.
Providence Patient
Care about patients. He made me feel comfortable and trustworthy.
Providence Patient
Everything went well as always.
Providence Patient
Dr. Koo is very good, professional, concerned and explained everything clearly; but it is so hard to call through for any appointment.
Providence Patient
Excellent services
Providence Patient
I would recommend Dr. Koo. He listened to my family history which is significant, ordered diagnostic testing, went over the results and developed a monitoring/treatment plan of action going forward.
Providence Patient
I thought he had a good knowledge and explained well.His manner was so prudent that I felt at ease.
Providence Patient
Dr. Koo reviews my lab results and sending me comments on my Chart. I am very happy with my doctor!
Providence Patient
This was an emergency visit
Providence Patient
Always good care when see doctors but when I want to get Follow up the process is complicated .
Providence Patient
Dr did endoscopy month ago and follow up check in explained very good what will be doing in month
Providence Patient
Was referred for MRI
Providence Patient
Dr. Koo answered all my questions. Very polite and good listener. Very professional.
Providence Patient
Very good!
Providence Patient
Very thor0ugh explanations -- consultation only by video
Providence Patient
Very professional and kind.
Providence Patient
I'm grateful to have dr Koo in my care team. He is very knowledgeable and kind.
Providence Patient
Good
Providence Patient
Very professional and caring doctor!
Providence Patient
My primary doctor got me in to specialist right away.
Providence Patient
Thorough review of my chart prior to visit, discussed all concerns
Providence Patient
I'm satisfied with everything. However, I cannot see the test results of Dr. Koo in My Chart. how do i view it?
Providence Patient
I spent time in the hospital and these were follow up It answered a lot of questions
Providence Patient
Dr . Koo is excellent with patience to listen what I have to said and answer to all my concerns .
Providence Patient
Excellent and thorough
Providence Patient
Overall my experience was great. I was able to discuss the concern and we came up with a plan going forward.
Providence Patient
I appreciated all the time he spend with me and how he explained what needed to be done and why.
Providence Patient
Great and helpful care
Providence Patient
Excellent service.
Providence Patient
I was so impressed with Dr. Koo!!!!!! He is kind and listens. I believe he can help me.
Providence Patient
Dr. Koo took the time to listen to my questions and concerns and answer them in full detail.
Providence Patient
Good experience
Providence Patient
Very Satisfied.
Providence Patient
Dr Koo is an amazing physician! For the last 3 years I have seen multiple non-St Jude gastro docs - who at the end of the visit said 'lots of people struggle, live with it'. On my first appt with Dr Koo, he recommended a test which Identified the problem, then provided a treatment plan. So grateful he listened, cared, and provided me with hope.
Providence Patient
Very good communication
Providence Patient
Dr Koo is very knowledgeable, patient and answered all my questions in a very understandable manner. He put my mind at ease and I look forward to partnering with him as my GI care provider.
Providence Patient
Dr. Koo's bedside manner at the virtual visit is just as good as his in-office virtual visit. He was prepared and very personable despite the virtual setting and I appreciated the convenience of a zoom appointment.
Providence Patient
Very pleasant and informative.
Providence Patient
Doctor used MyChart to give me my results very quickly and professionally. I appreciated that very much.
Providence Patient
My [Date] visit is a good experience to me, just as what I expect for a doctor visit should be.
Providence Patient
Dr Koo was friendly and explained clearly reason for visit and future procedure. Just a long wait for appointment to do procedure
Providence Patient
Very happy with Dr Coo
Providence Patient
Exceptionally professional and scenery bedside manor.
Providence Patient
Dr moo was very good. He left the decisions up to me
Providence Patient
Good over-all experience
Providence Patient
It's a very pleasant visit.
Providence Patient
That office is very busy
Providence Patient
Dr. Koo is by far the best and most compassionate doctor I have ever had, he listens to my questions as well as he asked me questions that are important, and he explains in detail my blood test and stool test, Dr. Koo truly cares about my health and that makes me feel good.
Providence Patient
Very professional , dedicated and warm care provider
Providence Patient
Very satisfied with the services of this provider and the whole groupthank you
Providence Patient
I like how the records are all online and available. I like how all the doctors can look at past medical notes and lab results and stuff. It really shows a "Team" effort. Lastly, and most importantly, EVERYONE seems to care. They are all empathetic and sympathetic and I feel they have compassion and a desire to make sure I am better. THANK YOU!
Providence Patient
He spent a lot of time with me. Addressed all my issues. He was very thorough and thoughtful. Very impressed. He really was interested and concerned. The doctors I have seen over the last several years he was the best. I get tired of doctors subscribing medicines instead of drilling down to my health challenges by testing. Most of the doctors I have seen are not interested in me. That is how I feel. I tend to put off seeing doctors and asking for help.
Providence Patient
It is very difficult to schedule appointment . All the doctors seem all booked. But Dr. Patrick Koo is very professional , excellent and he calms me down when I nervous about my Acid Reflux and all staffs are really nice . I am very comfortable In the office .
Providence Patient
Very professional and caring. Took time to explain conditions and choices.
Providence Patient
I believe that the St. Jude Health Care Team have provided me excellent care and provide a great of professionalism and courtousy.
Providence Patient
Amazing staff and doctor
Providence Patient
Dr. Koo was extremely thorough in his approach regarding my medical situation. He sat down and asked me many questions, he tried to understand what my issues were, and he explained to me on a chart some of the things that could potentially be wrong. He ordered a blood test and a breath test in order to analyze my issue. I was extremely happy with Dr. Koo's service and attention to my issue. I even told him how great it was that he asked me so many questions and tried to understand what was wrong with me. Dr. Koo is a great doctor.
Providence Patient
I do enjoy the visit, Doctor provides very clear explanation of my gallstones experience.
Providence Patient
Very well explained.
Providence Patient
I very much appreciate Dr. Koo seeing me on the same day that I called. My reason for calling had me very concerned, but Dr. Koo was extremely reassuring. Thank you, Dr. Koo!
Providence Patient
No complaints
Providence Patient
Very careing
Providence Patient
Excellent!!!
Providence Patient
Dr Zoo was very helpful in describing my possible condition. He listened to my concerns.
Providence Patient
Excellent care with Dr. Koo
Providence Patient
No complaints.
Providence Patient
Clinical Interests
- Abdominal Pain
- Abnormal Bowel Movement
- Abnormal Liver Function Blood Test
- Abnormal Stool
- Achalasia
- Acute Pancreatitis
- Alcoholic Hepatitis
- Altered Bowel Habits
- Anemia
- Anorexia
- Autoimmune Enteropathy
- Autoimmune Hepatitis
- Barrett's Esophagus
- Benign Neoplasm Of Colon
- Biliary Tract Disease
- Blood In Stool
- Bravo Ph Test
- Breath Testing
- Bright Red Blood Per Rectum
- Burping
- Capsule Endoscopy
- Celiac Disease
- Cholangioscopy
- Cholangitis
- Cholecystitis
- Cholelithiasis
- Cholestasis
- Chronic Abdominal Pain
- Chronic Diarrhea
- Chronic Pancreatitis
- Cirrhosis
- Clostridium Difficile
- Clostridium Infections
- Cold Therapies
- Colitis
- Colon Polypectomy
- Colonic Inertia
- Colonic Polyps
- Colonoscopy
- Colorectal Screening
- Constipation
- Crigler Najjar Syndrome
- Cyclic Vomiting Syndrome
- Digestive Disorders
- Diverticular Disease
- Diverticulitis
- Diverticulosis
- Double Balloon Enteroscopy
- Duodenal Ulcer
- Duodenitis
- Dyspepsia
- Dysphagia
- End Stage Liver Disease
- Endoscopic Mucosal Resection
- Endoscopic Mucosal Resection Of Esophagus
- Endoscopic Mucosal Resection Of Large Colon Polyps
- Endoscopic Retrograde Cholangiopancreatography
- Endoscopic Ultrasound
- Endoscopy
- Eosinophilic Colitis
- Eosinophilic Enteritis
- Eosinophilic Esophagitis
- Eosinophilic Gastritis
- Epigastric Pain
- Eructation
- Esophageal Disease
- Esophageal Disorder
- Esophageal Diverticulum
- Esophageal Mass
- Esophageal Motility Disorders
- Esophageal Spasm
- Esophageal Stricture
- Esophageal Ulcer
- Esophageal Varices
- Esophagitis
- Fatty Liver
- Fecal Impaction
- Fecal Incontinence
- Feeding Tube Management
- Flatulence
- Focal Nodular Hyperplasia
- Gallbladder Disease
- Gallbladder Polyp
- Gastric Anomaly
- Gastric Ulcer
- Gastritis
- Gastroenteritis
- Gastroesophageal Reflux Disease
- Gastroesophageal Reflux Surgery
- Gastrointestinal (Gi) Cancer Screening
- Gastrointestinal Amyloid
- Gastrointestinal Bleeding
- Gastroparesis
- Gastroscopy
- Gastrostomy Closure Surgery
- Giardiasis
- Gluten Sensitivity
- Helicobacter Pylori
- Hematemesis
- Hematochezia
- Hemochromatosis
- Hepatitis
- Hepatitis B
- Hepatitis C
- Hereditary Colon Cancer
- Hiatal Hernia
- High Resolution Manometry
- Ileitis
- Inflammatory Bowel Disease
- Intestinal Obstruction
- Intractable Vomiting
- Irritable Bowel Syndrome
- Jaundice
- Lactose Intolerance
- Liver Disease
- Liver Mass
- Lynch Syndrome
- Malabsorption
- Melena
- Motility Disorders
- Nausea
- Non Alcoholic Fatty Liver Disease
- Non Alcoholic Steatohepatitis
- Obstipation
- Odynophagia
- Ogilvie Syndrome
- Pancreas Divisum
- Pancreatic Cyst
- Pancreatic Fistula
- Pancreatic Insufficiency
- Pancreatic Pseudocyst
- Pancreatic Steatorrhoea
- Pancreaticobiliary Disease
- Pancreatitis
- Paralytic Ileus
- Partial Small Bowel Obstruction (Sbo)
- Peptic Ulcer
- Peritonitis
- Peutz Jeghers Syndrome
- Polyposis Syndrome
- Portal Hypertension
- Portal Hypertensive Gastropathy
- Postprandial Diarrhea
- Primary Encopresis
- Proctitis
- Proctosigmoidoscopy
- Radiofrequency Ablation For Barrett's Esophagus
- Rectal Bleeding
- Rectal Pain
- Regional Enteritis
- Secondary Encopresis
- Short Bowel Syndrome
- Sigmoidoscopy
- Small Bowel Disease
- Stomach Cramps
- Stomach Disorders
- Swallowing Problem
- Ulcerative Colitis
- Virtual Care
- Vomiting
- Whipple's Disease
- Wilson's Disease
Enjoyed meeting Dr Woo. Very reassuring.
Providence Patient