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

Dr. Christopher M Sinclair, M.D.

Neurology Physician in Port Jefferson, NY · enumerated 2007.

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

National Provider Identifier

1205987351

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Registry record

Entity type Individual (Type 1)

Name Dr. Christopher M Sinclair

Credential M.D.

Sex Male

Practice address Port Jefferson, NY, 11777

Phone (631) 560-7290

Enumeration date Jan 16, 2007

Last updated in NPPES Jul 21, 2022

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

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 4301505450 (MI) Secondary

2084N0600X Clinical Neurophysiology Physician Allopathic & Osteopathic Physicians · License 232434 (NY) Secondary

2084V0102X Vascular Neurology Physician Allopathic & Osteopathic Physicians · License 042228 (CT) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 232434 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
042228	Other	CT	MEDICAL LICENSE
232434	Other	NY	MEDICAL LICENSE

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 Christopher Sinclair practice?

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

What is the NPI number for Christopher Sinclair?

The National Provider Identifier (NPI) for Christopher Sinclair is 1205987351, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.