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NPISignal

Individual Healthcare Provider

Olivia Celine Main, MD

NPI Record: ActiveInternal Medicine — Medical Oncology
NPI1225664352
San Diego, California

Provider's NPPES record last updated: September 9, 2026

Overview

Entity Type
Individual Healthcare Provider
NPI
1225664352
Primary Specialty
Internal Medicine — Medical Oncology
Practice Location
San Diego, California
Sole Proprietor
No

Federal Screening

NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.

List of Excluded Individuals/Entities (LEIE)

HHS Office of Inspector General

No potential match identified

No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.

Source data
September 10, 2026
Records indexed
84,001
Screened
Sep 18, 2026, 2:20 AM UTC

This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.

SAM.gov Exclusions

U.S. General Services Administration

Not checked

SAM.gov Exclusions was not checked.

SAM.gov screening is not configured on this deployment. No SAM check has been performed.

Screened
Not checked

This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.

This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.

Run a name-based screening

Searches OIG LEIE and SAM.gov by name and reviews every potential match.

Specialties & Taxonomies

  • Internal Medicine

    Medical Oncology

    Allopathic & Osteopathic Physicians

    Primary

    An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

    Taxonomy code 207RX0202X
  • Student in an Organized Health Care Education/Training Program

    Student, Health Care

    An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

    Taxonomy code 390200000X
  • Internal Medicine

    Allopathic & Osteopathic Physicians

    A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

    Taxonomy code 207R00000X

Provider-Reported License Information

Internal Medicine (California)
A209103
Internal Medicine (California)
A209103
License numbers are reported by the provider to NPPES and are not independently verified by NPISignal against any state licensing board. Confirm current license status directly with the issuing state board.

Practice Locations

Practice Location

200 W Arbor Dr

San Diego, California 92103-9000

Phone: (800) 926-8273

Additional Practice Location

9300 Campus Point Dr

La Jolla, California 92037-1300

Phone: (800) 926-8273

Fax: (888) 539-8781

Additional Practice Location

3855 Health Sciences Dr

La Jolla, California 92093-1503

Phone: (800) 926-8273

Fax: (888) 539-8781

Additional Practice Location

506 6th St

Brooklyn, New York 11215-3609

Phone: (718) 780-3000

Additional Practice Location

9400 Campus Point Dr

La Jolla, California 92093-1350

Phone: (800) 926-8273

Fax: (888) 539-8781

Additional Practice Location

4250 1st Ave

San Diego, California 92103-2026

Phone: (800) 926-8273

Fax: (888) 539-8781

Record Information

Enumeration Date
March 20, 2020
Provider's NPPES Record Last Updated
September 9, 2026
Certification Date
September 9, 2026
NPISignal NPPES Dataset
August 2026

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