Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Peter K Chak, MD

Internal Medicine Physician in Freeport, NY · enumerated 2005 · practices at Ocean Physicians PC.

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

National Provider Identifier

1316928617

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Registry record

Entity type Individual (Type 1)

Name Peter K Chak

Credential MD

Sex Male

Practice address 33 North Ocean Ave, Freeport, NY, 11520

Phone (516) 378-4949

Fax (516) 379-8026

Enumeration date Nov 14, 2005

Last updated in NPPES May 16, 2008

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License NY136699 (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
401877	Other	NY	WELLCARE
00393215	Medicaid	NY	-
040426009162	Other	NY	FIDELIS

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

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 Peter Chak?

Peter Chak is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Ocean Physicians PC Internal Medicine Physician · Freeport, NY NPI 1144353152

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-16.