Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jan Albert Koenig, MD

Specialist in Rockville Centre, NY · enumerated 2005.

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

National Provider Identifier

1245221209

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Jan Albert Koenig

Credential MD

Sex Male

Practice address 2000 N Village Ave, Suite 306, Rockville Centre, NY, 11570

Phone (516) 678-2232

Fax (516) 678-8405

Enumeration date Oct 31, 2005

Last updated in NPPES Mar 25, 2025

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 158360 (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
A100062016	Other	NY	PTAN

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 Jan Koenig?

Jan Koenig 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 →

Florencio Gomez Internal Medicine Physician · Rockville Centre, NY NPI 1194728592 Peter Wong Ophthalmology Physician · Rockville Centre, NY NPI 1215931670 David Nelson Ophthalmology Physician · Rockville Centre, NY NPI 1316942360 Glenn Stoller Ophthalmology Physician · Rockville Centre, NY NPI 1558366526 Russell Fumuso Ophthalmology Physician · Rockville Centre, NY NPI 1750386736 Henry Perry Ophthalmology Physician · Rockville Centre, NY NPI 1811992365 Raymond Mariani Optometrist · Rockville Centre, NY NPI 1205831724 Rockville Dermatology, PC Dermatology Physician · Rockville Centre, NY NPI 1356349153

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-25.