Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Catherine Schaeffer, CNP

Women's Health Nurse Practitioner in Cambridge, MA · enumerated 2022.

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

National Provider Identifier

1720795826

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Registry record

Entity type Individual (Type 1)

Name Mrs. Catherine Schaeffer

Credential CNP

Sex Female

Practice address 1691 Cambridge St Apt 35, Cambridge, MA, 02138

Phone (252) 916-8296

Enumeration date Oct 31, 2022

Last updated in NPPES Oct 16, 2023

Taxonomy & licenses

363LW0102X Women's Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2341065 (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

How do I verify Catherine Schaeffer's NPI record?

Cross-check NPI 1720795826 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1720795826 active?

Yes, as of the latest NPPES snapshot, NPI 1720795826 is active (record last updated 2023-10-16).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-16.