Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Catherine Margaret Flynn, PNP

Pediatric Nurse Practitioner in Medford, NY · enumerated 2019.

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

National Provider Identifier

1528532686

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Registry record

Entity type Individual (Type 1)

Name Ms. Catherine Margaret Flynn

Credential PNP

Sex Female

Practice address 2799 Route 112 Ste 11, Medford, NY, 11763

Phone (631) 732-5222

Fax (631) 732-6222

Enumeration date Jan 11, 2019

Last updated in NPPES Jan 11, 2019

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 382931 (NY) 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.

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Frequently asked questions

What specialty is Catherine Flynn?

Catherine Flynn is registered in NPPES with the primary taxonomy of Pediatric Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Jennifer Nastasi Pediatrics Physician · Medford, NY NPI 1174630263 Jessica Golden Clinical Social Worker · Medford, NY NPI 1114454204 Cynthia Longjohn Pediatrics Physician · Medford, NY NPI 1518454610

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-11.