Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Ayre, PA-C

Physician Assistant in Springfield, MA · enumerated 2022 · practices at Peter T Demos MD.

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

National Provider Identifier

1861123168

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Registry record

Entity type Individual (Type 1)

Name Cassandra Ayre

Credential PA-C

Sex Female

Practice address 125 Liberty St Ste 403, Springfield, MA, 01103

Phone (413) 739-6611

Enumeration date Jun 19, 2022

Last updated in NPPES Jun 19, 2022

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing 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

What is the NPI number for Cassandra Ayre?

The National Provider Identifier (NPI) for Cassandra Ayre is 1861123168, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cassandra Ayre practice?

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

Other providers at this practice address

Browse all →

Peter T Demos MD Dermatology Physician · Springfield, MA NPI 1669090445 Leana Karam Physician Assistant · Springfield, MA NPI 1134969660

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-19.