Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Karen Lynn Riley, CRNP

Primary Care Nurse Practitioner in Holden, MA · enumerated 2010.

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

National Provider Identifier

1073822797

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ms. Karen Lynn Riley

Credential CRNP

Sex Female

Practice address 554 Salisbury Street, Holden, MA, 01520

Phone (443) 989-8718

Enumeration date Sep 29, 2010

Last updated in NPPES Nov 21, 2016

Taxonomy & licenses

363LP2300X Primary Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R164675 (MD) Secondary

363LP2300X Primary Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 251009 (MA) 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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Karen Riley?

Karen Riley is registered in NPPES with the primary taxonomy of Primary Care Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-11-21.