Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karen S Ailsworth, MD
Pediatrics Physician in Baraboo, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1467418335
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Registry record
Entity type Individual (Type 1)
Name Karen S Ailsworth
Credential MD
Sex Female
Practice address 1700 Tuttle St, Baraboo, WI, 53913
Phone (608) 355-3800
Fax (608) 355-7001
Enumeration date Apr 21, 2006
Last updated in NPPES Feb 1, 2022
Taxonomy & licenses
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 35472-020 (WI) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 32039800 | Medicaid | WI | - |
| 1000147 | Other | WI | PHYSICIANS PLUS |
| 4275 | Other | WI | DEAN HEALTH INSURANCE |
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.
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 Karen Ailsworth?
Karen Ailsworth is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-01.