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Dr. John O'Holleran, MD

General Surgery*
4.3 (11)
Map Pin Small Redwood City, CA
Accepting new patients
37 years of experience

Overview of Dr. John O'Holleran, MD

Dr. John O'Holleran, MD is a General Surgery Specialist in Redwood City, CA. They specialize in General Surgery, has 37 years of experience, and is board certified in General Surgery. They graduated from University of Nebraska Medical Center College of Medicine and is affiliated with Cgh Medical Center and UnityPoint Health - St. Luke's - Sioux City. Patients rated Dr. O'Holleran an average 4.3 star rating.

Dr. O'Holleran works at Practice in Redwood City, CA with other offices in Oregon City, OR, Sterling, IL and Sioux City, IA. They are accepting new patients and accept Aetna, Anthem and Cigna as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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These providers are on the medical staff of Good Samaritan Hospital
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These providers are on the medical staff of Good Samaritan Hospital.

Dr. O'Holleran's Office Locations

  1. 1
    Ucsf Medical Group Business Services
    290 Redwood Shores Pkwy, Redwood City, CA 94065 Icon Directions Right Arrow Directions Phone Icon (650) 853-2135
  2. 2
    Clackamas Surgical Associates Inc.
    1510 Division St Ste 210, Oregon City, OR 97045 Icon Directions Right Arrow Directions Phone Icon (503) 723-6525
  3. 3
    Cgh Medical Center-main Clinic
    101 E Miller Rd, Sterling, IL 61081 Icon Directions Right Arrow Directions Phone Icon (815) 625-4790
    Monday
    08:30 - 17:00
    Tuesday
    08:30 - 17:00
    Wednesday
    08:30 - 17:00
    Thursday
    08:30 - 17:00
    Friday
    08:30 - 17:00
  4. 4
    Unitypoint Clinic General Surgerygastroenterology
    2730 Pierce St Ste 402, Sioux City, IA 51104 Icon Directions Right Arrow Directions Phone Icon (712) 234-8725

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Cgh Medical Center
  • UnityPoint Health - St. Luke's - Sioux City

Experience & Treatment Frequency

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What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

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HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Laparoscopic Appendectomy
Lipomas
Incisional Hernia
Laparoscopic Appendectomy
Lipomas
Incisional Hernia

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Laparoscopic Appendectomy
Lipomas
  • View other providers who treat Lipomas
Incisional Hernia
Appendicitis
Cholecystitis and Gallstones
Gallstones
Inguinal Hernia
Obstructed Inguinal Hernia
Peripheral Vascular Disease (PAD, PVD)
Varicose Veins
Dressing and-or Debridement of Wound, Infection, or Burn
Excision, Shaving, or Destruction of Skin and Subcutaneous Tissue (incl. Mohs Micrographic Surgery), Tissue Transfer
Open Incisional or Ventral Hernia Repair
Ventral Hernia Repair Open
Abdominal Mass
Abdominal Pain
Anal and Rectal Cancer
Anal Fissure
Anorectal Abscess
Anorectal Fistula
Ascites
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Barrett's Esophagus
Benign Neoplasm of the Digestive System
Boil
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Bone Cancer
Breast Cancer
Breast Lump
Collapsed Lung (Pneumothorax)
Colorectal Cancer
Constipation
Crohn's Disease
Diaphragmatic and Hiatal Hernia
Ductal Carcinoma in Situ
Empyema
  • View other providers who treat Empyema
Esophageal Varices
Gallbladder and Biliary Tract Cancer
Gallbladder Cancer
Gastric Ulcer
Hemorrhoids
Hiatal Hernia
Hyperparathyroidism
Ileus
  • View other providers who treat Ileus
Inflammatory Bowel Disease
Intestinal Abscess
Intestinal Diverticulosis
Intestinal Obstruction
Ischemic Colitis
Lung Cancer
Neoplasm of Gastrointestinal Tract
Neuroendocrine Tumors
Osteosarcoma
Pancreatic Cancer
Parathyroid (Gland) Disease
Partial Lung Collapse
Pelvic Abscess
Peripheral Arterial Aneurysm
Peripheral Arterial Aneurysm and Dissection
Phlebitis and Thrombophlebitis
Pleural Effusion
Pyloric Stenosis
Rib Fracture
Ruptured Aortic Aneurysm
Secondary Malignancies
Soft Tissue Sarcoma
Thyroid Cancer
Thyroid Nodule
Ulcerative Colitis
Umbilical Hernia
Vascular Insufficiency of Intestines
Ventral Hernia
Abdominoplasty
Abscess or Fluid Incision and Drainage
Anal Fistulectomy or Fistulotomy
Anoscopy
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Axillary Lymph Node Dissection
Biliary Drainage
Biopsy
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Breast Reconstruction
Cholecystectomy with Robotic Assist
Colectomy
Colectomy Sigmoidectomy with Robotic Assist
Colostomy
Duodenal Polypectomy
Endoscopy (Esophagus, Stomach, Small Intestine)
Enterostomy (Laparoscopic or Open)
Esophagectomy (Esophagogastrostomy, Esophagojejunostomy)
Excision of Breast Tumor
Excision of Rectal Tumor
Excision of Stomach Tumor
Gallbladder Removal
Gallbladder Removal (Cholecystectomy)
Hemorrhoidectomy or Excision of Anal Tags
Hernia Repair
Intestinal Transplant (incl. Enterectomy)
Laparoscopic Excision or Destruction of Ovary
Laparoscopic Gallbladder Removal (Cholecystectomy)
Laparoscopic Inguinal Hernia Repair
Laparoscopic Umbilical or Ventral Hernia Repair
Lumpectomy
Lymph Node Biopsy or Excision
Mastectomy
Meniscus Surgery
Open Appendectomy
Open Diaphragmatic or Paraesophageal Hiatal Hernia Repair
Open Inguinal Hernia Repair
Paraesophageal Hernia Repair, Laparoscopic
Peripheral Artery Catheterization
Port Placements or Replacements
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Repair of Anal and Rectal Defects (Anoplasty, Repair of Imperforate Anus, Sphincteroplasty, Rectal Graft)
Soft Tissue Tumor Removal
Sphincterotomy
Thoracentesis
Thoracoscopic Wedge Resection
Thyroid Lobectomy
Thyroidectomy or Thyroid Lobectomy
Video-Assisted Thoracoscopic Surgery (VATS) or Thoracotomy
Wedge Resection Colon
Wound Repair
Check your insurance
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    View All Accepted Carriers

    • Accepts most major Health Plans. Please contact our office for details.
    • Aetna
    • Anthem
    • Cigna
    • First Health
    • Humana
    • MultiPlan

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    4.3
    Average provider rating
    Based on 11 ratings
    Patient Ratings (11)
    5 Star
    (9)
    4 Star
    (0)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (2)
    Leave a review

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    Dr. O'Holleran's Office & Staff

    • Ease of scheduling urgent appointments
    • Office environment, cleanliness, comfort, etc.
    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. O'Holleran

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. John O'Holleran, MD

    Specialties*
    • General Surgery

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 37 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.
    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1912007220
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Internship
    • St Joseph Hospital
    Internship
    Medical Education
    • University of Nebraska Medical Center College of Medicine
    Medical Education
    Board Certifications
    • General Surgery
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. John O'Holleran, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. O'Holleran is offering online scheduling or call the provider’s office for more information.

    Dr. O'Holleran has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    11 patients have reviewed Dr. O'Holleran. The overall rating for this provider is 4.3. You can read verified reviews and ratings and leave your own review based on your experience with Dr. O'Holleran.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. O'Holleran, there are benefits to both methods. A person calling to schedule an with Dr. O'Holleran appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

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