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 School - Medical College of Wisconsin
Milwaukee, WI USA
Undergraduate - University of Wisconsin
Madison, WI USA
Internship - Mount Sinai Medical Center of Cleveland
Cleveland, OH USA
- 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 10/29/2018, 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.
169 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|
|Knows Medical History||4.8|
|Time Spent with Patient||4.9|
|Patient Rating of Doctor||4.8|
16 Patient Comments
Reviewed on Oct 17, 2018
Dr.William O'Brien, my breast surgeon, is a very caring, understanding and compassionate doctor. He performed my double mastectomy from breast cancer and recently the latest related surgery. I would recommend him to anyone looking for a great surgeon.
Reviewed on Oct 8, 2018
William Obrien M.D. is the BEST doctor, very carring.
Reviewed on Sep 24, 2018
Dr. O'Brien is in a top spot on my list of excellent providers during my cancer care.
Reviewed on Sep 24, 2018
I routinely need a rectal exam due to having had anal cancer treatment. Dr. O'Brien is always respectful of privacy during this exam.
Reviewed on Jul 18, 2018
Would never consider seeing anyone but Dr. O'Brien. He is outstanding.
Reviewed on Jun 27, 2018
dr obrian, maureeen and Linda ( receptionist) are always so welcoming and kind expecially in a department that can be kind of scary they ALWAYS have a smile and kind words.
Reviewed on Jun 27, 2018
dr o Brian always has a way of making you feel understood and always takes time to listen.
Reviewed on Jun 25, 2018
This wasn't a typical appointment, it was a STAT add on referral for a dialysis catheter placement.Doctor called me after hours to set up the appointment. Wonderful man , super nice !
Reviewed on Jun 6, 2018
Dr.Obrien is an excellent doctor. He has a great bedside manner!I would definitely recommend him!
Reviewed on May 30, 2018
the doctor was quick talking and it seemed as though he was in a hurry. I have severe abdominal attacks and he acted like it was nothing, and that there was, and is nothing he can do about it. I feel I was treated as a number and not a patient.
Reviewed on May 30, 2018
I waited almost a half hour before being seen by the nurse, or doctor.
Reviewed on May 9, 2018
Dr. was running a bit behind. Had about a 15 minute wait in the waiting room & then about another 10 minutes in the room.
Reviewed on Feb 12, 2018
Dr. OBrien was outstanding! I would highly recommend to friends and family.
Reviewed on Jan 15, 2018
Again, as stated before, great office staff!
Reviewed on Jan 5, 2018
Overall excellent experience
Reviewed on Dec 15, 2017
All good. I went to ER. Had tests - examined surg. resident. Then to OR for surgery. Good care - my surgeon was on call.
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