Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Kristyn Leigh Mastridge

Specialist in Port Jefferson Station, NY · enumerated 2013 · practices at New York Therapy Placement Services.

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

National Provider Identifier

1144664731

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Kristyn Leigh Mastridge

Sex Female

Practice address Port Jefferson Station, NY, 11776

Phone (631) 473-4284

Enumeration date Apr 25, 2013

Last updated in NPPES Apr 25, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 662082121 (NY) Primary

174400000X Specialist Other Service Providers · License 662081121 (NY) Secondary

174400000X Specialist Other Service Providers · License 662080121 (NY) Secondary

174400000X Specialist Other Service Providers · License 662079121 (NY) Secondary

174400000X Specialist Other Service Providers · License 350688091 (NY) Secondary

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

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.

What specialty is Kristyn Mastridge?

Kristyn Mastridge is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Joy Kling Speech-Language Pathologist · Port Jefferson Station, NY NPI 1558409664 Dawn Battaglia Specialist · Port Jefferson Station, NY NPI 1861828386 Marian Wynn Occupational Therapy Assistant · Port Jeff Sta, NY NPI 1396176285 Janine Nofer Contractor · Port Jefferson Station, NY NPI 1992136766 New York Therapy Placement Services Early Intervention Provider Agency · Port Jefferson Station, NY NPI 1982060489 Bridget Carey Speech-Language Pathologist · Port Jefferson Station, NY NPI 1609394162

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-25.