Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen Oster

Q: What is the NPI number for Karen Oster?

The National Provider Identifier (NPI) for Karen Oster is 1760923825, a Type 1 (individual) record in the CMS NPPES registry.

Geriatric Physical Therapist in Hingham, MA · enumerated 2017.

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

National Provider Identifier

1760923825

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Registry record

Entity type Individual (Type 1)

Name Karen Oster

Sex Female

Practice address 23 Shipyard Dr Apt 206, Hingham, MA, 02043

Phone (617) 773-4222

Enumeration date Mar 9, 2017

Last updated in NPPES Mar 9, 2017

Taxonomy & licenses

2251G0304X Geriatric Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers 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

Where does Karen Oster practice?

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

What is the NPI number for Karen Oster?

The National Provider Identifier (NPI) for Karen Oster is 1760923825, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-09.