NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Louise M Zarrow, CRNP

Nurse Practitioner in Allentown, PA · enumerated 2005.

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

National Provider Identifier

1154307825

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Louise M Zarrow
Credential CRNP
Sex Female
Practice address 850 S 5th Street, Good Shepherd Physician Group 5th Floor Billing, Allentown, PA, 18103
Fax (610) 778-9270
Enumeration date Dec 15, 2005
Last updated in NPPES Oct 1, 2009

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License SP008252 (PA) Primary

Other identifiers

Identifier Type State Issuer
2000361 Other PA KEYSTONE

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 Louise Zarrow practice?
The practice location on file with NPPES is in Allentown, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Louise Zarrow?
The National Provider Identifier (NPI) for Louise Zarrow is 1154307825, 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 2009-10-01.