Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Gina Marie Sullivan, APNP

Acute Care Nurse Practitioner in Watertown, WI · enumerated 2012.

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

National Provider Identifier

1427392687

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Registry record

Entity type Individual (Type 1)

Name Mrs. Gina Marie Sullivan

Credential APNP

Sex Female

Practice address 125 Hospital Dr, Watertown, WI, 53098

Phone (920) 390-7575

Enumeration date Nov 12, 2012

Last updated in NPPES Apr 3, 2017

Taxonomy & licenses

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4989-33 (WI) Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4989-33 (WI) Secondary

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 Gina Sullivan practice?

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

What is the NPI number for Gina Sullivan?

The National Provider Identifier (NPI) for Gina Sullivan is 1427392687, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-04-03.