Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Christine Nwaiser

Sleep Medicine (Internal Medicine) Physician in Great River, NY · enumerated 2019.

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

National Provider Identifier

1063974236

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Registry record

Entity type Individual (Type 1)

Name Dr. Christine Nwaiser

Sex Female

Practice address 100 Church Rd, Great River, NY, 11739

Phone (631) 988-2819

Enumeration date Apr 4, 2019

Last updated in NPPES Jun 13, 2023

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 318032 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Christine Nwaiser?

Christine Nwaiser is registered in NPPES with the primary taxonomy of Sleep Medicine (Internal Medicine) Physician. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-13.