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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

KRZYSZTOF SYGNAROWICZ MD
NPI 1174898928
Internal Medicine in Syosset, NY

Active since March 13, 2012
311 S OYSTER BAY RD, SYOSSET, NY 11791(516) 713-3211(516) 266-6556 Get Directions Write a Review

NPPES record last updated: September 8, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 8, 2026, Sep 12, 2022, Mar 2, 2017 (3 updates tracked since 2017).

About Krzysztof Sygnarowicz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KRZYSZTOF SYGNAROWICZ MD (NPI 1174898928) is a healthcare organization registered as an internal medicine in Syosset, New York and active in the NPI registry since March 2012. The organization lists Krzysztof Sygnarowicz, Md, as its authorized official.

NPPES Registry Identity

NPI1174898928
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameKRZYSZTOF SYGNAROWICZ MD
Location Address311 S OYSTER BAY RDSyosset, NY 11791-6221
Mailing Address311 S Oyster Bay RdSyosset, NY 11791-6221 · (516) 713-3211 · Fax (516) 266-6556
Phone(516) 713-3211
Fax(516) 266-6556
Organization SubpartNo
Authorized OfficialKrzysztof SygnarowiczMd · (516) 713-3211
Enumeration DateMarch 13, 2012
Last NPPES UpdateSeptember 8, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 8, 2026
✔ NPI 1174898928 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 189552
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
311 S OYSTER BAY RD, Syosset, NY 11791
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Other Identifiers 2

Other1982775326NY · Npi-for Individual
Medicaid01390330NY

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JOLANTA SYKORA-SYGNAROWICZ D.D.S.
Dentist
311 S OYSTER BAY RD
SYOSSET, NY 11791
Nassau County (516) 496-0627
KRZYSZTOF SYGNAROWICZ M.D.
Internal Medicine
311 S OYSTER BAY RD
SYOSSET, NY 11791
Nassau County (516) 713-3211

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Krzysztof Sygnarowicz MD's NPI number?

The NPI number for Krzysztof Sygnarowicz MD is 1174898928. It was assigned to this organization in the NPPES registry on March 13, 2012.

Where is Krzysztof Sygnarowicz MD located?

Krzysztof Sygnarowicz MD is located at 311 S Oyster Bay Rd, Syosset, NY 11791. The listed phone number is (516) 713-3211.

What is Krzysztof Sygnarowicz MD's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Krzysztof Sygnarowicz MD was last updated on September 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.