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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Larissa Chartrand, M.D.

Internal Medicine Physician in Fairfield, CA · enumerated 2014 · practices at Northbay Healthcare Group.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1851715627

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Registry record

Entity type Individual (Type 1)
Name Dr. Larissa Chartrand
Credential M.D.
Sex Female
Practice address Fairfield, CA, 94534
Phone (707) 646-5500
Enumeration date Feb 13, 2014
Last updated in NPPES Jul 7, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License ME 120869 (FL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Larissa Chartrand practice?
The practice location on file with NPPES is in Fairfield, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Larissa Chartrand?
The National Provider Identifier (NPI) for Larissa Chartrand is 1851715627, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-07.