Dr. Caroline E. Olson, M.D.

Dr. Caroline E. Olson is a Specialist provider (Specialist) practicing in Hoffman Estates, IL, registered in the NPPES registry with NPI 1609996131 since 2007. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1609996131
Entity type	Individual (Type 1)
Name	Dr. Caroline E. Olson
Credential	M.D.
Sex	Female
Practice address	Hoffman Estates, IL, 60195
Phone	8475199103
Fax	8475199107
Enumeration date	2007-03-29
Last updated in NPPES	2007-07-08

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
174400000X	Specialist	Primary	—	IL

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Copy-ready billing details

Provider: Caroline Olson, M.D.
NPI: 1609996131
Taxonomy: 174400000X (Specialist)
Address: Hoffman Estates, IL, 60195

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1003923954	Susan Ashby	Individual	Physical Therapist	Hoffman Estates, IL

Verify this record

Cross-check NPI 1609996131 against the authoritative CMS record: view Dr. Caroline E. 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

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.

What specialty is Caroline Olson?

Caroline Olson is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.