Department General Surgery
Primary Location Hillcrest Hospital
Type of Doctor Adults Only
Languages English
Surgeon Yes
Locations Specialties & Treatments

Treatment & Services

  • Abdominal Perineal Resection
  • Abdominal Surgery
  • Abdominal Wall Reconstruction
  • Advanced Laparoscopic Surgery
  • Appendectomy
  • Bile Duct Stone Removal
  • Biliary Surgery
  • Breast Biopsy
  • Breast Cancer Surgery Program
  • Breast Conservation Surgery
  • Breast Diagnostics
  • Breast Surgical Oncology
  • Breast Ultrasound
  • Cancer Center
  • Colectomy
  • Colon Surgery
  • Colonoscopy
  • Complex Abdominal Hernia Repair
  • Diagnostic Laparoscopy
  • Endocrine Surgery - Thyroid And Parathyroid
  • Endoscopy
  • Flexible Sigmoidoscopy
  • Gastrectomy
  • 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
  • Splenectomy
  • Stereotactic Brain Biopsy
  • Stereotactic Breast Biopsy
  • Surgery
  • Surgery For Breast Cancer
  • Surgery for Diseases Of The Breast
  • Surgical Drains
  • Surgical Endoscopy and Endoscopic Procedures
  • Thyroidectomy
  • Tracheostomy
View all 69 Treatment & Services +

Specialty in Diseases & Conditions

  • Abdominal Abscess
  • Abdominal Pain
  • Achalasia
  • Anal Abscesses
  • Anal Cancer
  • Anal Fissures
  • Appendicitis
  • 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
  • Cancer
  • Carcinoid Syndrome
  • Collagenous Colitis
  • Colon Diseases
  • Colon Polyps
  • Colorectal Cancer
  • Crohn's Disease
  • Diverticulosis
  • Ductal Carcinoma In Situ
  • Duodenal Atresia
  • Duodenal Polyps
  • Eosinophilic Esophagitis
  • Esophageal Cancer
  • Esophagitis
  • Extrahepatic Bile Duct Cancer
  • Fissure
  • Fistulas
  • Gallbladder & Biliary Tract Disease
  • Gallbladder Disease
  • Gallstones
  • Gas (Digestive)
  • Gastritis
  • Gastroenteritis
  • Gastroesophageal Reflux (GERD)
  • GI Bleeding
  • Goiter
  • Gynecomastia
  • Heliocobactor Pylori
  • Hemorrhoids
  • Hepatobiliary Disease
  • Hernias
  • Hiatal Hernia
  • Hypercalcemia
  • Hyperparathyroidism
  • Hyperthyroidism
  • Inflammatory Bowel Disease (IBD)
  • Inguinal Hernia
  • Intestinal Carcinoid Tumors
  • Intra-abdominal Cancer/Tumor
  • Intraductal Papilloma
  • Intussusception
  • Irritable Bowel Syndrome (IBS)
  • Large Intestine Cancer
  • Male Breast Cancer
  • Melanoma
  • Nipple Discharge
  • Pancreatitis
  • Parathyroid Cancer
  • Parathyroid Disease Description
  • Pediatric Breast Anomalies
  • Pediatric Hydrocele | Hernia
  • Recurrent Breast Cancer
  • Sarcoma
  • Sebaceous Cysts
  • Sepsis
  • Skin Cancer
  • Small Intestine Cancer
  • Soft Tissue Sarcoma
  • Stomach Cancer
  • Temporal Arteritis
  • Thyroid Cancer
  • Thyroid Disease
  • Thyroid Nodule
  • Ulcerative Colitis
View all 82 Specialties +


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Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Residency - Mount Sinai Medical Center (Closed)
General Surgery
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
General Surgery
Cleveland, OH USA


  • Surgery - General Surgery

Specialty Interests

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

Research & Publications

See publications for William O'Brien, MD.

(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.)

Industry Relationships

Industry Relationships

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 12/10/2019, 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.

Patient Satisfaction Reviews

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.

Overall Star Ratings
4.9 out of 5
Explains 4.8
Listens 4.7
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.9

33 Patient Comments

Reviewed on Jun 3, 2020

Dr. O'Brien was wonderful. I feel comfortable knowing he is going to be doing my surgery.

Reviewed on Jun 3, 2020

great provider

Reviewed on May 27, 2020

Doctor O'Brien took the time to explain everything to me.

Reviewed on Apr 24, 2020

Dr OBrien was excellent and very professional

Reviewed on Apr 24, 2020

thank you Dr O'Brien

Reviewed on Apr 8, 2020

Dr O'Brien is a great asset for the CCF, his advice about my issue, his recommendations, and execution of the operation were flawless, as was his interpersonal skills. A true doctor, and physician. Thank you again for guiding me along the path taken.

Reviewed on Mar 4, 2020

Doctor and staff made me feel extremely comfortable.

Reviewed on Feb 26, 2020

Dr. O'Brien is the best! He is caring and works hard for all of his patients.

Reviewed on Feb 26, 2020

Dr O'Brien took the time to explain. We discussed risks and benefits of surgical approaches. I feel confident that I chose the correct surgeon as well as the correct surgical option. I truly appreciate and value his taking the time to guide me in this decision.

Reviewed on Feb 10, 2020

Dr Obrien was wonderful. He was not in a hurry and he explained everything.

Reviewed on Feb 5, 2020

Dr. O'Brien is a very caring and thorough physician, I felt extremely comfortable with his knowledge and skill.

Reviewed on Jan 24, 2020

Excellent experience with physician assistant and nutritionist.

Reviewed on Nov 22, 2019

Dr. Obrien & Staff are the Best!

Reviewed on Oct 30, 2019

very professional staff. Dr Obrien was kind, considerate and very knowledgeable and understanding about my condition.

Reviewed on Oct 30, 2019

This was my first visit with Dr Obrien and I was very thankful for his excellent bedside manner and knowledge about my condition.

Reviewed on Oct 30, 2019

*Dr. O'Brien is excellent. I've been with him 20 years. I've recommended him many times.

Reviewed on Oct 11, 2019

I felt I was listened to and the doctor explained my options.

Reviewed on Sep 30, 2019

Dr. O'Brien has a wonderful manner about him. He is a very nice gentleman and he is very professional.

Reviewed on Sep 30, 2019

I would highly recommend Dr. O'Brien

Reviewed on Sep 27, 2019

dr. O'Brien is absolutely amazing.

Reviewed on Sep 27, 2019

SUPER doctor.

Reviewed on Sep 27, 2019

awesome doctor & surgeon

Reviewed on Sep 23, 2019

Dr. O'Brian LISTENED to me, unlike other care providers I've had....didn't get buried in computer entries, was respectful, friendly, answered all my concerns.

Reviewed on Sep 18, 2019

excellent Doctor with extremely caring team!!!

Reviewed on Sep 18, 2019

excellent doctor with very caring team

Reviewed on Sep 18, 2019

dr Obrian and his staff are excellent, professional, respectful-compassionate

Reviewed on Sep 16, 2019

Patients go to physicians for medical treatment. My experience has been that some physicians, like those in any profession, are more "people friendly" than others. I am going to undergo surgery. Two of your nurses recommended I see Dr. O'Brien because, in their judgment, he has "good hands". To my mind, Dr. O'Brien also has a good heart and good people skills. I am going into this surgery with no anxiety whatsoever.

Reviewed on Sep 4, 2019

Doctor O' Brian is a very positive person, encouragin.

Reviewed on Aug 28, 2019

dr O'Brien delivers excellent service with care and respect. greatly appreciated. his office assistant is also friendly, helpful and professional.

Reviewed on Aug 28, 2019

I would highly recommend dr O'Brien, positive experience.

Reviewed on Aug 19, 2019

Dr. O'Brien was recommended to me by a friend and fellow doctor at the Clinic. The doctor listened to my issues and talked about what to do next and left me feeling positive about my condition.

Reviewed on Aug 9, 2019

wonderful and caring doctor. easy to talk to and made me comfortable. good listener and good communicator. loved the guy

Reviewed on Aug 7, 2019

Dr. O'Brien is such a great doctor and such a caring person. He always puts me at ease. He is so positive. He answers all my questions and spends time with me. He is everything a doctor should be.

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