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

Ms. Theresa Marie Bonsey, R.PH., M.P.H, BCPS

Pharmacotherapy Pharmacist in Waterville, ME · enumerated 2014.

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

National Provider Identifier

1831503309

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Registry record

Entity type Individual (Type 1)

Name Ms. Theresa Marie Bonsey

Credential R.PH., M.P.H, BCPS

Sex Female

Practice address Waterville, ME, 04901

Phone (207) 873-0634

Fax (207) 621-9333

Enumeration date Jun 12, 2014

Last updated in NPPES Jun 12, 2014

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

Taxonomy & licenses

1835P1200X Pharmacotherapy Pharmacist Pharmacy Service Providers · License PR3871 (ME) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH 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

Where does Theresa Bonsey practice?

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

What is the NPI number for Theresa Bonsey?

The National Provider Identifier (NPI) for Theresa Bonsey is 1831503309, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-12.