Photo of John D. O'Holleran, MD

John D. O'Holleran, MD

Accepting New Patients
1510 Division Street, Suite 210
Oregon City, OR 97045
2026.1 miles away
Medical Groups & Affiliations
Providence Medical Group - Oregon
Speaks: English
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Providence Surgery Clinic - Southeast at Willamette Falls

1510 Division Street, Suite 210, Oregon City, OR 97045

About John D. O'Holleran

Dr. O'Holleran is a board-certified general surgeon. One of the reasons he decided to pursue medicine is because he loves the marriage of science and being able to help people. He firmly believes, "the more you know, the better off you are", so he values taking time to educate patients about their surgical condition, procedure options, benefits, risks and expectations.

In his practice, Dr. O'Holleran offers a wide variety of general surgery services, including, breast, thyroid, hernias, gall bladder, rectal, all abdomen and laparoscopic procedures, in which he is Robotic Surgery certified.

Dr. O'Holleran is married with two grown children. He considers himself the world's biggest foodie and loves following college sports.

Medical School

University of Nebraska
1987

Residency

Exempla St Joseph General Surgery Residency Program
1992

Professional Associations

Robotic Surgery certified

Board Certifications
  • American Board of Surgery, Surgery
Providence Surgery Clinic - Southeast at Willamette Falls
1510 Division Street, Suite 210
Oregon City, OR 97045

Medical Groups & Affiliations
Providence Medical Group - Oregon

Affiliated Locations
Providence Willamette Falls Medical Center

The world's biggest foodie and loves following college sports.

Clinical Interests

  • Abdominal Abscess
  • Abdominal Adhesions
  • Abdominal Hernia
  • Abdominal Surgery
  • Abdominal Wall Defect
  • Abdominal Wall Reconstruction
  • Appendectomy
  • Biliary Colic
  • Breast Biopsy
  • Bursitis
  • Cartilage Injury
  • Cecostomy
  • Cholecystectomy
  • Cholecystitis
  • Colonic Volvulus
  • Diaphragmatic Hernia
  • Duodenal Ulcer Surgery
  • Endoscopic Surgery
  • Epigastric Hernia
  • Femoral Hernia
  • Fine Needle Aspiration
  • Fistula Enterocutaneous
  • Fundoplication
  • Gallbladder Disease
  • Gastroesophageal Reflux Surgery
  • Hemorrhoid Surgery
  • Hemorrhoids
  • Hernia
  • Hernia Repair
  • Heterotopic Ossification
  • Hiatal Hernia
  • Hiatal Hernia Repair
  • Hickman Catheter
  • Ileostomy
  • Incarcerated Hernia
  • Incision Drainage Abscess
  • Incisional Hernia
  • Inclusion Cyst
  • Infusaport Placement
  • Inguinal Hernia
  • Internal Hernia
  • Intestinal Fistula
  • Intestinal Infarction
  • Intestinal Obstruction
  • Intussusception
  • Joint Infection
  • Laparoscopic Appendectomy
  • Laparoscopic Cholecystectomy
  • Laparoscopic Gastrostomy
  • Laparoscopic Hernia Repair
  • Laparoscopic Hiatal Hernia Repair
  • Laparoscopic Incisional Hernia Repair
  • Laparoscopic Lymph Node Biopsy
  • Laparoscopic Pancreatectomy
  • Laparoscopic Recurrent Hernia Repair
  • Laparoscopic Splenectomy
  • Laparoscopic Toupet Fundoplication
  • Laparoscopic Treatment Of Small Bowel Obstruction
  • Laparoscopic Umbilical Herniorrhaphy
  • Laparoscopic Ventral Hernia Repair
  • Laparoscopy
  • Leg Mass
  • Ligament Injury
  • Lipomas
  • Lymph Node Biopsy
  • Lysis Of Adhesions
  • Mechanical Complication Of Gastrostomy
  • Mediports
  • Mesenteric Cyst
  • Mesenteric Mass
  • Minimally Invasive Surgery
  • Muscle Biopsy
  • Pancreaticobiliary Disease
  • Paracolostomy Hernia
  • Parastomal Hernia
  • Paratenonitis
  • Partial Splenectomy
  • Peg (Percutaneous Endoscopic Gastrostomy)
  • Peptic Ulcer Surgery
  • Perforation Of Gallbladder
  • Peridiverticular Abscess
  • Persistent Pain After Orthopedic Surgery
  • Pilar Cyst
  • Pilonidal Disease
  • Port
  • Portacath
  • Pyloroplasty
  • Rectus Sheath Hernia
  • Recurrent Femoral Hernia
  • Recurrent Hernia
  • Reducible Hernia
  • Sentinel Node Biopsy
  • Sigmoid Volvulus
  • Skin Abscess
  • Small Bowel Biopsy
  • Small Bowel Obstruction
  • Soft Tissue Biopsy
  • Spigelian Hernia
  • Splenectomy
  • Splenic Anomalies
  • Splenic Cyst
  • Splenic Disease
  • Splenomegaly
  • Stomach Fistula
  • Subphrenic Abscess
  • Umbilical Hernia
  • Varicose Veins
  • Ventral Hernia