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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 +
Insurance

Insurance

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Education & Professional Highlights

Education & Professional Highlights

Appointed
2005

Education & Fellowships

Residency - Mount Sinai Medical Center (Closed)
General Surgery
Cleveland, OH USA
1990

Medical Education - Medical College of Wisconsin
Milwaukee, WI USA
1985

Undergraduate - University of Wisconsin
Madison, WI USA
1981

Internship - Mount Sinai Medical Center of Cleveland
General Surgery
Cleveland, OH USA

Certifications

  • 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 11/3/2022, 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

161 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

15 Patient Comments

Reviewed on Nov 30, 2022

Enjoyed meeting Dr. O'Brein. He may me feel very at ease concerning my future surgery

Reviewed on Nov 2, 2022

Everything regarding this appointment was wonderful. Dr. O'Brien is the best!

Reviewed on Nov 2, 2022

Dr. O'Brien is a fantastic surgeon as well as a kind, caring and understanding person. He truly is a one in a million physician!

Reviewed on Oct 18, 2022

First time meeting Dr. O'Brien. Really enjoyed him! Great guy. Felt comfortable with him and his confidence in resolving my issue. Extremely friendly. Felt like an old friend.

Reviewed on Oct 5, 2022

I am VERY impressed with Dr. O'Brien. He was friendly, very professional and put me at ease. He treated me with kindness and explained anything I did not know. Most important, there was no rush to immediately schedule surgery, he booked a test and said we would await those results first!

Reviewed on Sep 21, 2022

Dr. O'Brien was great, made sure I was comfortable and answered all my questions.

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

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