Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Catherine Alexandra Haraldsson, PA-C

Surgical Physician Assistant in Barrington, IL · enumerated 2005 · practices at Randy Zimmerman M.D.,P.C..

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

National Provider Identifier

1669472312

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Registry record

Entity type Individual (Type 1)

Name Ms. Catherine Alexandra Haraldsson

Credential PA-C

Sex Female

Practice address 27750 W Highway 22, Suite 100, Barrington, IL, 60010

Phone (847) 816-3000

Fax (877) 676-1549

Enumeration date Jul 22, 2005

Last updated in NPPES Dec 17, 2021

Taxonomy & licenses

363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 10000540A (IN) Secondary

363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 2684-023 (WI) Secondary

363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085001460 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
1669472312	Medicaid	WI	-

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 Catherine Haraldsson?

The National Provider Identifier (NPI) for Catherine Haraldsson is 1669472312, a Type 1 (individual) record in the CMS NPPES registry.

Where does Catherine Haraldsson practice?

The practice location on file with NPPES is in Barrington, IL. 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 2021-12-17.