NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jillian Sonkin, FNP

Family Nurse Practitioner in Lynbrook, NY · enumerated 2010.

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

National Provider Identifier

1639473267

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Jillian Sonkin
Credential FNP
Sex Female
Practice address 185 Merrick Rd, Lynbrook, NY, 11563
Phone (516) 887-0077
Fax (516) 887-5365
Enumeration date Dec 21, 2010
Last updated in NPPES Dec 21, 2010

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 335775 (NY) Primary
FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

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 Jillian Sonkin practice?
The practice location on file with NPPES is in Lynbrook, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jillian Sonkin?
The National Provider Identifier (NPI) for Jillian Sonkin is 1639473267, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-12-21.