Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Olivia Simpson, MD

Geriatric Medicine (Family Medicine) Physician in Waterville, ME · enumerated 2017.

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

National Provider Identifier

1205366564

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Registry record

Entity type Individual (Type 1)

Name Olivia Simpson

Credential MD

Sex Female

Practice address 149 North St, Waterville, ME, 04901

Phone (207) 861-5000

Fax (207) 861-5001

Enumeration date Jun 19, 2017

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License EC171068 (ME) Secondary

207QG0300X Geriatric Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License MD23438 (ME) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Olivia Simpson?

The National Provider Identifier (NPI) for Olivia Simpson is 1205366564, a Type 1 (individual) record in the CMS NPPES registry.

Where does Olivia Simpson practice?

The practice location on file with NPPES is in Waterville, ME. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.