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NPISignal

Individual Healthcare Provider

Gary Nichols, M.D.

NPI Record: ActiveInternal Medicine
NPI1033201587
Santa Rosa, California

Provider's NPPES record last updated: July 10, 2019

Overview

Entity Type
Individual Healthcare Provider
NPI
1033201587
Primary Specialty
Internal Medicine
Practice Location
Santa Rosa, 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, 7:11 PM 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

    Allopathic & Osteopathic Physicians

    Primary

    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
  • Internal Medicine

    Hematology

    Allopathic & Osteopathic Physicians

    An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.

    Taxonomy code 207RH0000X
  • Internal Medicine

    Hematology & Oncology

    Allopathic & Osteopathic Physicians

    An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

    Taxonomy code 207RH0003X
  • Internal Medicine

    Medical Oncology

    Allopathic & Osteopathic Physicians

    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

Provider-Reported License Information

Internal Medicine (California)
G73872
Internal Medicine (California)
181851
Internal Medicine (California)
181851
Internal Medicine (California)
181851
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

2455 Summerfield Rd

Santa Rosa, California 95405

Phone: (707) 308-2815

Additional Practice Location

3883 Airway Dr

Suite 201

Santa Rosa, California 95403-1670

Phone: (707) 521-8900

Fax: (707) 523-1309

Record Information

Enumeration Date
September 29, 2006
Provider's NPPES Record Last Updated
July 10, 2019
NPISignal NPPES Dataset
August 2026

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