Dr. Janet Olson, PH.D.

Dr. Janet Olson is a Speech-Language Pathologist provider (Speech-Language Pathologist) practicing in Dekalb, IL, registered in the NPPES registry with NPI 1962553842 since 2007. The credential PHD stands for Doctor of Philosophy.

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NPI	1962553842
Entity type	Individual (Type 1)
Name	Dr. Janet Olson
Credential	PH.D.
Sex	Female
Practice address	3100 SYCAMORE RD, NORTHERN ILLINOIS UNIVERSITY SPEECH & HEARING CLINIC, Dekalb, IL, 60115
Phone	8157531481
Enumeration date	2007-01-16
Last updated in NPPES	2010-08-24

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
231H00000X	Audiologist	Secondary	147000707	IL
235Z00000X	Speech-Language Pathologist	Primary	146006371	IL

PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Copy-ready billing details

Provider: Janet Olson, PH.D.
NPI: 1962553842
Taxonomy: 235Z00000X (Speech-Language Pathologist)
Address: 3100 SYCAMORE RD, NORTHERN ILLINOIS UNIVERSITY SPEECH & HEARING CLINIC, Dekalb, IL, 60115

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1699791863	Cynthia Erdos	Individual	Audiologist	Dekalb, IL
1437168150	Danica Billingsly	Individual	Audiologist	Dekalb, IL
1245304534	Jennifer Junck	Individual	Pediatric Nurse Practitioner	Dekalb, IL
1407916836	Northern Illinois University	Organization	Audiologist	Dekalb, IL
1447396825	Patricia Tattersall	Individual	Speech-Language Pathologist	Dekalb, IL
1194991216	Northern Illinois University	Organization	Physical Therapy Clinic/Center	Dekalb, IL
1821251430	Northern Illinois University-Physical Therapy	Organization	Physical Therapy Clinic/Center	Dekalb, IL
1538300983	Mary Jo Blaschak	Individual	Physical Therapist	Dekalb, IL

Verify this record

Cross-check NPI 1962553842 against the authoritative CMS record: view Dr. Janet Olson on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Janet Olson?

Janet Olson is registered in NPPES with the primary taxonomy of Speech-Language Pathologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-08-24.