Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Charles R Dennis, MD

Surgery Physician in Patchogue, NY · enumerated 2006 · practices at Brookhaven Surgical Services, P.C..

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

National Provider Identifier

1578593786

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Registry record

Entity type Individual (Type 1)

Name Charles R Dennis

Credential MD

Sex Male

Practice address 55 Medford Ave, Suite E, Patchogue, NY, 11772

Phone (631) 687-4190

Fax (631) 687-4198

Enumeration date Jul 4, 2006

Last updated in NPPES Feb 3, 2014

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 126943-1 (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
00376701	Medicaid	NY	-

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 Charles Dennis?

The National Provider Identifier (NPI) for Charles Dennis is 1578593786, a Type 1 (individual) record in the CMS NPPES registry.

Where does Charles Dennis practice?

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

Other providers at this practice address

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Brookhaven Surgical Services, P.C. Surgery Physician · Patchogue, NY NPI 1740514389

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-03.