Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Michael O'Leary, MD

Individual provider Surgery Physician · NPI 1811244312

Dr. Michael O'Leary, MD is a Surgical Oncology in Loma Linda, California. Graduated from University of California, Irvine, California College of Medicine in 2012, 14 years ago. Practices with University Surgeons of Orange a Medical Group, a 120-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
14
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2012
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

11370 Anderson St # 2100
Loma Linda, CA 92354-3450
Phone: (909) 558-2822
Fax: (909) 558-2328
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgical Oncology Physician (primary) Taxonomy 2086X0206X · Licence A128624 (CA)
Surgery Physician Taxonomy 208600000X · Licence A128624 (CA)

Record details

NPI number1811244312
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 14, 2012
Last updated in NPPESMarch 29, 2023
Certification dateMarch 29, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtySURGICAL ONCOLOGY
Also practisesGENERAL SURGERY
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice University Surgeons Of Orange A Medical Group — 120 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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