Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Caitlin E Olsen, NP

Psychiatric/Mental Health Nurse Practitioner in Marlborough, MA · enumerated 2011 · practices at Massachusetts Cardiology Assoc LLC.

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

National Provider Identifier

1669750378

Verified

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Registry record

Entity type Individual (Type 1)

Name Caitlin E Olsen

Credential NP

Sex Female

Practice address 159 Union St, Marlborough, MA, 01752

Phone (508) 624-9687

Enumeration date Jul 29, 2011

Last updated in NPPES Jul 18, 2022

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2264350 (MA) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2264350 (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

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

What is the NPI number for Caitlin Olsen?

The National Provider Identifier (NPI) for Caitlin Olsen is 1669750378, a Type 1 (individual) record in the CMS NPPES registry.

Where does Caitlin Olsen practice?

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

Other providers at this practice address

Browse all →

Joseph Adolph Urology Physician · Marlboro, MA NPI 1700883535 Peter Miotto Specialist · Marlborough, MA NPI 1194709246 Massachusetts Cardiology Assoc LLC Cardiovascular Disease Physician · Marlborough, MA NPI 1982661062 Joseph Bouchard Cardiovascular Disease Physician · Marlborough, MA NPI 1609892199 Kimberly Robinson Pulmonary Disease Physician · Marlborough, MA NPI 1801990056 Mary Reed Nurse Practitioner · Marlborough, MA NPI 1871652099 Daniel Carlucci Cardiovascular Disease Physician · Marlborough, MA NPI 1700076882

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-18.