Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Erinn Tilley, NP

Q: What is the NPI number for Erinn Tilley?

The National Provider Identifier (NPI) for Erinn Tilley is 1194739003, a Type 1 (individual) record in the CMS NPPES registry.

Nurse Practitioner in Burlington, MA · enumerated 2006.

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

National Provider Identifier

1194739003

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Registry record

Entity type Individual (Type 1)

Name Ms. Erinn Tilley

Credential NP

Sex Female

Practice address 41 Mall Rd, Lahey Clinic, Burlington, MA, 01805

Phone (781) 744-8480

Fax (781) 744-3443

Enumeration date Jul 28, 2006

Last updated in NPPES Dec 15, 2015

Taxonomy & licenses

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 110770 (NE) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 284976 (MA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
110086084A	Medicaid	MA	-

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 Erinn Tilley practice?

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

What is the NPI number for Erinn Tilley?

The National Provider Identifier (NPI) for Erinn Tilley is 1194739003, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-15.