Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Janet Catherine Callahan, LISW

Clinical Social Worker in Dubuque, IA · enumerated 2006.

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

National Provider Identifier

1528047198

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Registry record

Entity type Individual (Type 1)

Name Ms. Janet Catherine Callahan

Credential LISW

Sex Female

Practice address Dubuque, IA, 52001

Phone (563) 580-4366

Fax (563) 584-2321

Enumeration date Jan 12, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 00980 (IA) Primary

Other identifiers

Identifier	Type	State	Issuer
48746	Other	IA	WELLMARK BC/BS

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 Janet Callahan?

The National Provider Identifier (NPI) for Janet Callahan is 1528047198, a Type 1 (individual) record in the CMS NPPES registry.

Where does Janet Callahan practice?

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

Other providers at this practice address

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Daniel Olson Psychologist · Dubuque, IA NPI 1043216039 Barbara Chalmers Bartlett Clinical Psychologist · Dubuque, IA NPI 1366401200 Eldine Mead Counselor · Dubuque, IA NPI 1336318625

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.