Sajen J. Mathews, 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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About Sajen J. Mathews
My father was a factory worker and had great ambitions for me. He spent almost half of his salary on my education. The day I was accepted into the India Institute of Technology, the world’s finest engineering school, was one of the happiest of his life. Imagine his disappointment when I quit after a year to go to medical school. It was very difficult to tell my father, but I knew I had a passion for medicine and making a difference in people’s lives.
The collaboration between St. Jude Medical Center and St. Jude Heritage Medical Group allows me to focus on medical advancements, and practicing at the state-of-the-art Knott Family Endoscopy Center ensures my patients have access to the newest technology and treatment options available today.
Offering the latest procedures with the newest techology is a vital component of my practice, but I believe it is equally important to treat patients the way I would want to be treated. I take the time to listen to my patients’ concerns, educate them about their options and work with them to improve their health and well-being. This is why I became a doctor.
Bangalore University
InternshipLAC-USC Medical Center
ResidencyLAC-USC Medical Center
ResidencyCollege Hospital
FellowshipLAC-USC Medical Center

Providence St. Jude Medical Center
Community Reviews
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Exceptional doctor
Providence Patient
Dr. Mathews is the best. I am lucky to have him.
Providence Patient
Dr. Matthews is awesome in his care, concern and thorough treatment! He is wonderful!
Providence Patient
The provider has treating me since 2005. He's excellent.
Providence Patient
Dr Matthew's is a very kind and thorough Specialist. I am grateful to be able to see him on regular basis.
Providence Patient
Great have utmost confidence in Dr Mathews
Providence Patient
Exceptional team working with Dr. Mathews. Focused on me, as the patient, excellent reminder phone notices, emails, and follow- up after procedure. He personally visited before and after the procedures, excellent, excellent, caring physician. I am blessed to continue to have his care.
Providence Patient
Dr. Mathews and his staff are exceptional! You could not ask for any better care than I received at his office. Highly recommend this exceptional gastroenterologist!
Providence Patient
It was a great experience!!
Providence Patient
Very good
Providence Patient
The doctor and staff were very helpful and provided the best caregivers
Providence Patient
Extremely satisfying visit
Providence Patient
It was a pleasure to meet with Dr Mathew's today. He explained everything extremely well concerning test I had done and why I won't need them in the future.
Providence Patient
Dr Matthew's is always friendly, a great listener and I always leave there knowing that I received the best care possible. He never leaves you wondering about your issue that your seeing him for, always has a plan to correct it.
Providence Patient
Good debriefing on the results of my recent scopes
Providence Patient
Dr Matthews is fantastic. I had a referral after an ER visit, and he was comforting and reassuring, and clearly knowledgeable
Providence Patient
Dr. Mathews and his medical staff were outstanding!
Providence Patient
All my doc I see thru providence are amazing
Providence Patient
Dr. Mathews is a gem. My blood pressure was low, due to his calming quality, as he stated. This is absolutely true.
Providence Patient
Caring and thorough
Providence Patient
Dr Mathew's was very cordial and made me feel cared for
Providence Patient
Well done
Providence Patient
Dr Mathews is fabulous. Hope he stays around for awhile
Providence Patient
GREAT CARE THANK YOU!
Providence Patient
Provider has my trust
Providence Patient
The doctor was very forthcoming and knowledgeable with information that I needed, and made me feel very comfortable and confident in the results of my test and eased all my worries.
Providence Patient
The BEST Experience!!
Providence Patient
Very smooth visit
Providence Patient
The best
Providence Patient
Experience is always GOOD
Providence Patient
Very effective
Providence Patient
Enjoyed my experience
Providence Patient
Was seen and treated very well no issues
Providence Patient
Dr Matthews is a very good doctor. He Listens and gives reasons for what he suggests doing. He is a caring, intelligent physician .
Providence Patient
Great doctor!
Providence Patient
Great caring Doctor
Providence Patient
He seemed to reason that my stomach symptoms were due to anxiety and I had to insist to confirm nothing is wrong with the stomach by viewing through an endoscopy.
Providence Patient
This was first appointment with gastro specialist so questions about treatment, care and urgency hard to answer. Overall get doctor and staff.
Providence Patient
Always excellent care with Dr Mathew's and his team
Providence Patient
Dr. Mathews is an excellent physician.
Providence Patient
Dr Matthew's is a life saver. He is soooo good and is deserved to be nominated as the Doctor of the month!
Providence Patient
Dr. Matthew's was the only gastroenterologist willing to assist me with my g-tube. I was refused by 2 other doctors. Very disappointing.
Providence Patient
Positive experience
Providence Patient
I am very satisfied with the care I received from this provider
Providence Patient
Dr Matthew is an outstanding doctor
Providence Patient
Dr. Matthew's has provided me with proactive care over the past several years. He is personable, professional,and very focused on getting details from me to assist in his diagnostic decisions for further tests and procedures. St. Jude is lucky to have him as part of their team and I am lucky to have had his clinical care all of these years.
Providence Patient
ProfessionalKind and always remembers me n my problems. A extremely smart and I am so happy to have him as part of my medical team.
Providence Patient
Dr. Mathews takes the time to listen & treat my condition with care. I truly appreciate him & his expertise as my GI doctor.
Providence Patient
Awesome Doctor. Listened to my current problems and offered new care plans. Staff was friendly and cared.
Providence Patient
I was very satisfied with my appointment with Dr Mathew. I saw him after 5years. He listened every problem I had. I am very satisfied.
Providence Patient
ALL GOOD
Providence Patient
Very friendly caring practice.
Providence Patient
All was good
Providence Patient
Dr. Matthews is an excellent doctor. It is shame that it is difficult to schedule appointments with him and other doctors at St. Jude. But they are the best .
Providence Patient
This was a follow up visit. All my questions and concerns were addressed without feeling rushed.
Providence Patient
Good experience
Providence Patient
I thanked everyone for their help and concern.
Providence Patient
Very clean office and very courteous front desk and the doctor was very easy to talk to about my issues.
Providence Patient
Dr Mathews and his staff are all awesome! I would not go anywhere else for my gut health issues.
Providence Patient
Doctor very through and explained the reasons for treatment. He made me feel more hopeful about controlling my condition. Very good Doctor.
Providence Patient
Dr.. Mathews is a great Dr. To represent the St. Jude Staff.
Providence Patient
Dr. Mathews very good doctor understands exactly what you're talking about and clearly explains to you about your problem . Dr Mathews very good doctor, understands exactly what you're talking about and clearly explains to you about your problems.
Providence Patient
Though thoughtful
Providence Patient
Dr. Mathews is the best
Providence Patient
Excellent care!
Providence Patient
Knowledgable, respectful,humble and interactive.
Providence Patient
Dr Matthews is always available even if by phone or zoom I appreciate that he looks at me instead of the computer. He is a asset to Providence GI physicians and very personal able
Providence Patient
All good
Providence Patient
Dr. Mathew is an expert at what he does. It's a privilege to be his patient. He takes care of my entire family with diligence and respect. Amazing doctor!
Providence Patient
Love Dr Mathews. He is great
Providence Patient
Excellent care and concern
Providence Patient
My doctor and his staff are terrific.
Providence Patient
Dr Mathews and his entire team are exceptional.
Providence Patient
Excellent doctor,
Providence Patient
So easy to talk to about embarrassing subjects. He works with me. Treats me respectfully. His knowledge is extensive and gives me confidence in him. Great doctor!
Providence Patient
Very happy with my care from all my physicians
Providence Patient
Dr. Mathews is tops.
Providence Patient
I saw Dr Matthew's regarding some changes in my gastrointestinal problems. He was compassionate and offered me a variety of different things to try.
Providence Patient
Always repectful and enjoy him as my DR
Providence Patient
Very knowledgeable and professional
Providence Patient
Dr Mathews knew my medical history, had my chart accessible. He spent time with me answering questions. Such an intelligent Dr and worked well with my other specialists.
Providence Patient
I expected a follow up call after my visit from the provider or at least his physician's assistant to see if I was doing any better.Never happened.
Providence Patient
My experience was excellent. Dr Mathews managed our concerns and booked us for procedures in a timely manner. We were very impressed and satisfied.
Providence Patient
Dr Mathews is an excellent diagnostician.
Providence Patient
Dr Mathews is a truly caring, kind and smart doctor
Providence Patient
I want to keep always the same provider the are the best. And thanks.
Providence Patient
My entire is with Providence St.Jude or Saint Joseph medical group We are all very thankful for the care we receive throughout your facilities!
Providence Patient
I was lucky to get the appointment with Dr Matthew's in such a short time. I was very concerned about my health and he took the time to help me.
Providence Patient
I Love dr. MATHEWS. Have always had a great. Visit
Providence Patient
I just feel that I wasn't listened to. My appt was quick, and I was sent on my way. When I reached out in My Chart I was minimized and told I didnt really need anymore treatment. Also, blood work was requested. I am anemic, which was the whole reason we ran the tests. The dr has yet to address that. I am using google to figure out what supplements might help me replenish my blood supply from all the blood I lost while in the hospital.
Providence Patient
Dr Mathew is a wonderful caring Dr . The best . Better keep him around . He's great
Providence Patient
Dr. Matthews is a exceptionally experienced physician, who has extraordinarily good skills in relating to patients. In a few words he has the ability to explain vividly to the patient those things relevent to his or her situation. This helps relieve patient anxiety and secures patient cooperation.
Providence Patient
Dr. Mathews is an excellent gastroenterologist. All our family members are his patient and we all have visited him at some point or another and we always recommend him to others when they are looking for an excellent gastroenterologist. He is fantastic doctor. compassionate, friendly, caring physician and specialist. Lucky to trust our health to him.
Providence Patient
Excellent
Providence Patient
Very professional
Providence Patient
Good
Providence Patient
Dr. Matthew's was able to give me answers to my problem immediately and was very assuring and comforting.
Providence Patient
Dr. Mathew is an attentive listener and provides clear and direct information
Providence Patient
All fine
Providence Patient
I highly recommend this doctor.
Providence Patient
The doctors and their support teams have been outstanding in their care. But it has been challenging to schedule physical therapy post-op, or routine colonoscopy in a timely manner. Caveat: I do understand Dr. Mathews will be changing his schedule, and I do still want him to do the screening, so I can expect a delay.
Providence Patient
Dr. Mathew's is very kind and caring. This visit was to decide if I need a colonoscopy. The prep is horrible, but he listened to my concerns and offered encouragement.
Providence Patient
Dr. Mathews was courteous and professional
Providence Patient
Dr Matthews is the very best there is.
Providence Patient
Dr. Mathew's is very kind and caring. He always listens to my concerns and try's to find the best possible outcome for me. He has earned my complete confidence.
Providence Patient
Very happy with the whole experience . All were very nice made visit go very well.
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
The doctor listened to my concerns which was much appreciated.
Providence Patient