Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Erin Obrien, OTD, OTR, OT/L

Occupational Therapist in Sudbury, MA · enumerated 2025.

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

National Provider Identifier

1326910811

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Registry record

Entity type Individual (Type 1)

Name Dr. Erin Obrien

Credential OTD, OTR, OT/L

Sex Female

Practice address 30 Field Rd, Sudbury, MA, 01776

Phone (203) 313-2244

Enumeration date Sep 23, 2025

Last updated in NPPES Sep 23, 2025

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 36188 (MA) Primary

OT · Occupational Therapist: A licensed therapist helping patients develop or recover skills for daily living and working. About the OT 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

Is NPI 1326910811 active?

Yes, as of the latest NPPES snapshot, NPI 1326910811 is active (record last updated 2025-09-23).

How do I verify Erin Obrien's NPI record?

Cross-check NPI 1326910811 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-23.