Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Iris Zayin Sullivan, PA-C

Physician Assistant in Lawrence, MA · enumerated 2018.

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

National Provider Identifier

1356840342

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Registry record

Entity type Individual (Type 1)

Name Mrs. Iris Zayin Sullivan

Credential PA-C

Sex Female

Practice address 360 Merrimack St, Lawrence, MA, 01843

Phone (978) 557-8800

Fax (978) 557-8633

Enumeration date Feb 6, 2018

Last updated in NPPES Apr 15, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 1357 (NH) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA6435 (MA) Primary

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

What is the NPI number for Iris Sullivan?

The National Provider Identifier (NPI) for Iris Sullivan is 1356840342, a Type 1 (individual) record in the CMS NPPES registry.

Where does Iris Sullivan practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-15.