Dr. Cormac Eoin Oneill, MBBCH, BAO, LRCSI

Accepting patients


    Dr. Cormac Oneill, MBBCH, BAO, LRCSI is a Surgeon, who primarily practices in Dover, NH with 1 additional practice location. He is board certified. Dr. Oneill is fluent in English and is currently seeing new patients. To book an appointment or to confirm insurance options, please call Dr. Oneill’s office at (603) 742-1444.

    Castle Connolly Top Doctor

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    Medical Specialties and Areas of Expertise


    Medical Conditions Treated

    conditions treated by a Surgeon, like Dr. Cormac Oneill, may include:

    Please contact Dr. Oneill's office for more information or to schedule a consultation.

    Medical Procedures Performed

    procedures performed by a Surgeon, like Dr. Cormac Oneill, may include:

    Surgical Consultation, Surgery, Neurosurgery Consultation, Pre-Surgery Consultation, Surgery Consultation, Pediatric Pre-Surgery Consultation, Pre-Surgery Consultation, Laparoscopic Surgery Consultation, Gallbladder Removal / Cholecystectomy, Appendicitis / Appendectomy, Eyelid Surgery / Blepharoplasty, Brain Tumor Evaluation, Brain Aneurysm Treatment, Stroke Treatment (Acute), Refractive Lens Exchange, Brain Surgery, Skull Base Surgery, Surgery Follow Up, Neurosurgery Follow Up, Pre-Surgery Follow Up, Surgical Follow Up, Pediatric Pre-Surgery Follow Up, Laparoscopic Surgery Follow Up, Neuro-Oncology Consultation, Surgery Second Opinion, Wrist Arthroscopy, Endoscopic Eyebrow Elevation, Forehead Correction, Hand & Microsurgery Specialist Consultation, Hand & Microsurgery Specialist Follow Up, Head & Neck Surgery, Pelvic Surgery, Ptosis Repair, Central Line Placement, Gender Confirmation Surgery, Cerebral Shunt, Surgical Infections, Tube Thoracotomy, Laparoscopic Colectomy, Amputation, Limb Surgery, Minimally Invasive Surgery, Mastectomy, Upper Extremity Tendon Repair, Toe-to-Thumb Transplant, Upper Extremity Nerve Repair, Upper Extremity Joint Replacement, Upper Extremity Amputation, Reflux Surgery, Spleen Surgery, Implantable Contact Lens (ICL) Surgery, YAG Laser Procedure, Colon Surgery, Distal Pancreatectomy, Splenectomy, Sleeve Gastrectomy, Orthopedic Follow Up (Hand), Orthopedic Consultation (Hand), Cranial Bypass, Esophagogastroduodenoscopy (EGD), Esophageal Surgery, Gastrectomy, Laparoscopy, Lymph Node Biopsy, Pancreatic Surgery, Paraesophageal Surgery, Parathyroid Surgery, Head and Neck Cancer Screening, Whipple Procedure, Hepatic Surgery, Complex Gastrointestinal Surgery, Laparoscopy Consultation, Minimally Invasive Surgery Consultation, Magnetic Sphincter Augmentation (MSA), Abdominal Wall Reconstruction, Gastric Bypass Surgery, Pyloromyotomy, Percutaneous Endoscopic Gastrostomy (PEG) and Small Bowel Resection

    For detailed information, please contact Dr. Oneill's office.


    Please contact Dr. Oneill's office to confirm accepted insurance plans.



    10 Members Way

    Suite 402

    Dover, NH 03820

    (603) 742-1444

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    Cormac Oneill

    First Avenue And 16th Street

    Beth Israel Medical Center

    New York, NY 10003

    (212) 420-2000

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    Frequently Asked Questions

    Is Cormac Oneill accepting new patients?

    Yes, Cormac Oneill is accepting new patients at this time.

    Does Cormac Oneill offer online booking?

    Please contact Dr. Oneill's office at (603) 742-1444 for information about online booking, telehealth, or to schedule an appointment.

    Does Cormac Oneill offer telehealth appointments?

    Please contact Dr. Oneill's office at (603) 742-1444 for information telehealth appointment availability or for scheduling assistance.

    Which language(s) does Cormac Oneill speak?

    Cormac Oneill speaks English.

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