Treatment & Services
- Abdominal Perineal Resection
- Abdominal Surgery
- Abdominal Wall Reconstruction
- Advanced Laparoscopic Surgery
- Bile Duct Stone Removal
- Biliary Surgery
- Breast Biopsy
- Breast Cancer Surgery Program
- Breast Conservation Surgery
- Breast Diagnostics
- Breast Surgical Oncology
- Breast Ultrasound
- Cancer Center
- Colon Surgery
- Complex Abdominal Hernia Repair
- Diagnostic Laparoscopy
- Endocrine Surgery - Thyroid And Parathyroid
- Flexible Sigmoidoscopy
- Gastrointestinal Exams
- Gastrointestinal Surgery
- Hernia Open Repair Surgery
- Hernia Surgery
- High Risk Breast Cancer
- Intestinal Surgery
- Laparoscopic Abdominal Perineal Resection
- Laparoscopic Antireflux Surgery
- Laparoscopic Cholecystectomy
- Laparoscopic Hernia Surgery
- Laparoscopic Incisional Hernia Repair
- Laparoscopic Inguinal Hernia Repair
- Laparoscopic Lymph Node Biopsy
- Laparoscopic Peritoneal Dialysis Catheter Placement
- Laparoscopic Solid Organ Surgery
- Laparoscopic Splenectomy
- Laparoscopic Surgery
- Laparoscopic Surgery for Digestive Diseases
- Laparoscopic Ventriculoperitoneal Shunt Placement
- Liver Biopsy
- Minimally Invasive Breast Surgery
- Minimally Invasive Surgery
- Mohs Surgery
- Nipple & Skin Sparing Mastectomy
- Nissen Fundoplication
- Office Ultrasound Guided Biopsy
- Open Inguinal And Abdominal Hernia Repair
- Pancreas Resection
- Pancreatic Surgery
- Parathyroid Surgery
- Retroperitoneal Lymph Node Dissection
- Second Opinion Breast Cancer
- Sentinel Lymph Node Procedures
- Sentinel Node Biopsy
- Single incision laparoscopic surgery
- Single-port Surgery
- Stereotactic Brain Biopsy
- Stereotactic Breast Biopsy
- Surgery For Breast Cancer
- Surgery for Diseases Of The Breast
- Surgical Drains
- Surgical Endoscopy and Endoscopic Procedures
Specialty in Diseases & Conditions
- Abdominal Abscess
- Abdominal Pain
- Anal Abscesses
- Anal Cancer
- Anal Fissures
- Barrett's Esophagus
- Benign Breast Disease
- Bile Duct Diseases
- Bile Duct Obstruction
- Bile Duct Stones
- Breast Abscess
- Breast Cancer
- Breast Disease
- Breast Infections
- Breast Lump
- Breast Pain
- Carcinoid Syndrome
- Collagenous Colitis
- Colon Diseases
- Colon Polyps
- Colorectal Cancer
- Crohn's Disease
- Ductal Carcinoma In Situ
- Duodenal Atresia
- Duodenal Polyps
- Eosinophilic Esophagitis
- Esophageal Cancer
- Extrahepatic Bile Duct Cancer
- Gallbladder & Biliary Tract Disease
- Gallbladder Disease
- Gas (Digestive)
- Gastroesophageal Reflux (GERD)
- GI Bleeding
- Heliocobactor Pylori
- Hepatobiliary Disease
- Hiatal Hernia
- Inflammatory Bowel Disease (IBD)
- Inguinal Hernia
- Intestinal Carcinoid Tumors
- Intra-abdominal Cancer/Tumor
- Intraductal Papilloma
- Irritable Bowel Syndrome (IBS)
- Large Intestine Cancer
- Male Breast Cancer
- Nipple Discharge
- Parathyroid Cancer
- Parathyroid Disease Description
- Pediatric Breast Anomalies
- Pediatric Hydrocele | Hernia
- Recurrent Breast Cancer
- Sebaceous Cysts
- Skin Cancer
- Small Intestine Cancer
- Soft Tissue Sarcoma
- Stomach Cancer
- Temporal Arteritis
- Thyroid Cancer
- Thyroid Disease
- Thyroid Nodule
- Ulcerative Colitis
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Education & Professional Highlights
Education & Fellowships
Residency - Mount Sinai Medical Center (Closed)
Cleveland, OH USA
Medical Education - Medical College of Wisconsin
Milwaukee, WI USA
Undergraduate - University of Wisconsin
Madison, WI USA
Internship - Mount Sinai Medical Center of Cleveland
Cleveland, OH USA
- Surgery - General Surgery
biliary surgery, biliary system and splenectomy, breast, breast and endocrine, breast cancer, breast diagnostics, breast diseases, breast surgery, colon surgery, endocrine surgery - thyroid and parathyroid diseases and surgery, endocrine surgery (thyroid and parathyroid), general surgery, hernia and thyroid glands, hernia repair, hernia repairs, hernia surgery, Hiatal Hernia, surgical treatment of diseases of the breast
Research & Publications
(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)
Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.
To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.
As of 10/29/2021, Dr. O'Brien has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.
Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.
* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.
194 Patient Satisfaction Reviews
The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
Responses are measured on a scale of 1 to 5 with 5 being the best score.
The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.
|Courtesy, Respect & Concern||4.9|
|Patient Rating of Doctor||4.8|
22 Patient Comments
Reviewed on Jun 22, 2022
Superior doctor and person. Treats you with respect and a great sense of humor.
Reviewed on Jun 15, 2022
Dr is very genuine
Reviewed on Jun 1, 2022
Dr. O'Brien was very reassuring about my prognosis.
Reviewed on Mar 25, 2022
I never met Dr O'Brien before, he was very courteous extremely well informed on my condition and conveyed all the concerns and issues to me with ease. Doctor treated me like he knew me and like I was part of his own family. I felt very confident leaving there that I was in the best care I could be in. Doctors like him are what's keeping the Cleveland clinic on top.
Reviewed on Mar 23, 2022
I felt at ease with dr O'Brien and the explanations he gave me
Reviewed on Mar 11, 2022
Doctor O'Brien was friendly, upbeat and made me feel comfortable during my appointment.His staff was friendly and efficient with placing me in a room and asking required questions and returning phone calls.
Reviewed on Mar 11, 2022
Dr. O'Brien was friendly, funny and showed great care during my visit.
Reviewed on Mar 9, 2022
Both *Dr. O'Brian and *Dr. Michalow were kind, patience, thoughtful and gave me excellent care! You are lucky to have them.
Reviewed on Jan 24, 2022
Excellent Dr and staff
Reviewed on Dec 8, 2021
I have always had excellent experiences with Dr.O'Brien and everyone In his office over the past two years.
Reviewed on Dec 6, 2021
Dr. O'Brian is a caring and empathetic health care professional. He makes me feel safe and cared for with the best possible service.
Reviewed on Nov 3, 2021
I don't like going to the doctor but Dr. O'Brien eased any worries I had that day, very engaging and informative. Thanks!
Reviewed on Oct 20, 2021
Dr. O'Brien was very nice, and made me feel very comforable
Reviewed on Sep 29, 2021
Dr. Obrian took the time to lister to me, he didn't rush through my examination .
Reviewed on Sep 24, 2021
I was told Dr. O Brien's office will call me to set up a date for surgery. I visited the office last Friday..I have not been called yet by his office with a date !!
Reviewed on Sep 10, 2021
Dr. O'Brien listened and took time with me.
Reviewed on Aug 25, 2021
Dr. O'Brien was very kind. He explained the procedures and the options I have for my care. He answered all my questions.Thank you.
Reviewed on Aug 11, 2021
Dr. O'Brien is very professional and he was able to listen and explain my options and future procedures/treatments.
Reviewed on Aug 11, 2021
Dr O'brien would not return calls he was to read a cat scan disk that was sent him and he has yet to read it
Reviewed on Aug 11, 2021
Dr O'Brien was great. Wonderful bedside manner.
Reviewed on Aug 4, 2021
My only feedback is I wish I could have gotten the surgery faster and sooner it was a month before I could get in for the surgery that is needed. It's not the doctor's fault it's not the clinics fault it's just life.
Reviewed on Aug 4, 2021
As I said Dr O'Brien was throw in explaining to me when I asked him if this is only 3/4 of an inch why are we taking a foot and a half of my colon out? He answered me and I understood and I agreed
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