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

Theodore Tinnell

General Practice Registered Nurse in Boston, MA · enumerated 2021.

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

National Provider Identifier

1427626969

Verified

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Registry record

Entity type Individual (Type 1)

Name Theodore Tinnell

Sex Male

Practice address Boston, MA, 02108

Phone (617) 958-5697

Enumeration date Jun 11, 2021

Last updated in NPPES Jul 7, 2026

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

Taxonomy & licenses

163WG0000X General Practice Registered Nurse Nursing Service Providers · License R245581 (MD) Primary

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 Theodore Tinnell practice?

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

What is the NPI number for Theodore Tinnell?

The National Provider Identifier (NPI) for Theodore Tinnell is 1427626969, 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 2026-07-07.