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Dr. Michael O'leary, MD

Orange, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. O'leary, Surgical Oncologist in Orange, CA?

    Dr. Michael O'leary, MD is a Surgical Oncologist, who primarily practices in Orange, CA with 2 additional practice locations. Dr. O'leary is fluent in English, and is currently seeing new patients. Dr. O'leary’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. O'leary’s office at (909) 558-2822.

    What languages does Dr. O'leary speak?

    Dr. O'leary and their clinical team can communicate with patients in the following languages:

    • English

    What conditions does a Surgical Oncologist like Dr. O'leary typically treat?

    As a Surgical Oncologist, Dr. O'leary diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. O'leary. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.

    Also known as:

    • Colorectal Cancer
    • Colon cancer
    • Rectal cancer
    • Bowel cancer
    • Malignant neoplasm of colon
    • Malignant neoplasm of sigmoid colon

    ICD-10 Codes:

    • C189: Malignant neoplasm of colon, unspecified
    • C187: Malignant neoplasm of sigmoid colon

    Also known as:

    • Stomach Cancer
    • Gastric Cancer
    • Malignant Neoplasm of Stomach
    • Stomach Tumor

    ICD-10 Codes:

    • C169: Malignant neoplasm of stomach, unspecified

    Also known as:

    • Other non-cancerous neuroendocrine Tumor
    • Benign Tumor
    • Other benign neuroendocrine growths
    • Various non-cancerous hormone-producing tumors

    ICD-10 Codes:

    • D3A8: Other benign neuroendocrine tumors

    Also known as:

    • Pancreatic Cancer
    • Pancreas Cancer
    • Malignant Pancreatic Tumor
    • Pancreatic Carcinoma

    ICD-10 Codes:

    • C259: Malignant neoplasm of pancreas, unspecified

    What procedures does a Surgical Oncologist like Dr. O'leary typically perform?

    As a Surgical Oncologist, Dr. O'leary performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. O'leary. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.

    Also known as:

    • Large Malignant Skin Lesion Removal
    • Skin Cancer Excision
    • Large Malignant Growth Removal
    • Wide Excision of Skin Cancer
    • Trunk/Limb Skin Cancer Surgery

    CPT Codes:

    • 11606: Excision, malignant lesion including margins, trunk, arms, or legs; excised diameter over 4.0 cm

    Also known as:

    • Muscle or Skin Flap Surgery (Trunk)
    • Myocutaneous Flap (Body)
    • Fasciocutaneous Flap (Trunk)
    • Tissue Flap Reconstruction (Torso)

    CPT Codes:

    • 15734: Muscle, myocutaneous, or fasciocutaneous flap; trunk

    Also known as:

    • Skin Flap Surgery (Medium)
    • Tissue Rearrangement Surgery
    • Local Flap Surgery
    • Skin Graft (Adjacent Tissue)

    CPT Codes:

    • 14301: Adjacent tissue transfer or rearrangement, any area; defect 30.1 sq cm to 60.0 sq cm

    Also known as:

    • Sentinel Lymph Node Mapping
    • Lymph Node Identification
    • Sentinel Node Biopsy (Mapping)
    • Dye Injection for Lymph Nodes

    CPT Codes:

    • 38900: Intraoperative identification (eg, mapping) of sentinel lymph node(s) includes injection of non-radioactive dye, when performed (List separately in addition to code for primary procedure)

    Also known as:

    • Deep Armpit Lymph Node Biopsy
    • Biopsy
    • Axillary Lymph Node Excision
    • Open Axillary Node Biopsy
    • Underarm Lymph Node Removal

    CPT Codes:

    • 38525: Biopsy or excision of lymph node(s); open, deep axillary node(s)

    Also known as:

    • Inserting a Long-Term IV Port (Central Line)
    • Tunneled central venous catheter insertion
    • Subcutaneous port placement
    • Central line with port

    CPT Codes:

    • 36561: Insertion of tunneled centrally inserted central venous access device, with subcutaneous port; age 5 years or older

    Also known as:

    • Laparoscopic Biopsy
    • Minimally Invasive Biopsy
    • Peritoneal Biopsy
    • Abdominal Biopsy via Laparoscopy

    CPT Codes:

    • 49321: Laparoscopy, surgical; with biopsy (single or multiple)

    Does Dr. O'leary accept my insurance?

    Dr. O'leary accepts most major insurance plans. Important: Please call our office at (909) 558-2822 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. O'leary accept in Orange, CA?

    Dr. O'leary in Orange, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Blue Shield of California

    • Federal government of the United States

    • Medicare

    • Monarch HealthCare

    • OptumRx Administered Payer

    • Other Health Care Provider

    • State of California

    • UnitedHealth Group

    • Unknown

    View All Insurances

    Where is Dr. O'leary's office located?

    Dr. Michael O'leary's Primary Practice

    101 The City Dr S

    Orange, CA 92868

    (909) 558-2822

    Get Directions

    Dr. Michael O'leary's Practice 2

    11370 Anderson St # 2100

    Loma Linda, CA 92354

    Get Directions

    Dr. Michael O'leary's Practice 3

    26780 Barton Rd

    Redlands, CA 92373

    Get Directions

    What is Dr. O'leary's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. O'leary's National Provider Identifier (NPI) number is 1811244312.

    What common questions do patients ask about Dr. O'leary?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. O'leary

    What is Dr. Michael O'leary's specialty?

    Dr. O'leary is a Surgical Oncologist near Orange, CA.

    What does a Surgical Oncologist do?

    A surgical oncologist is a highly qualified and trained surgeon with specialized expertise in the prevention, diagnosis, treatment, and rehabilitation of cancer patients. They have received additional training in a multidisciplinary approach and dedicate a significant portion of their practice to these areas, as well as to cancer research.

    Is this Dr. Michael O'leary affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. O'leary is affiliated with Uci Medical Center, Redlands Community Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    When to see a Surgical Oncologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Surgical Oncologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is Michael O'leary accepting new patients in Orange, CA?

    Yes, Dr. Michael O'leary is accepting new patients at this time.

    Does Dr. Michael O'leary offer online booking?

    Please contact Dr. O'leary's office at (909) 558-2822 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Michael O'leary?

    Please contact Dr. O'leary's office at (909) 558-2822 for information regarding telehealth appointment availability or for scheduling assistance.

    <section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>