NPPES file of Aug 9, 2026

Ilene Klassy, CRNA

Certified Registered Nurse Anesthetist · Madison, WI

Ilene Klassy, CRNA is a certified registered nurse anesthetist with a practice address in Madison, Wisconsin, and NPI 1477731719, issued on Feb 8, 2008. Check the license (Wisconsin 4329, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1477731719
Name
Ilene Klassy
Credential
CRNA
Primary taxonomy
Certified Registered Nurse Anesthetist 367500000X
License number
4329 WI
Self-reported in NPPES; status is on the state search
Practice location
600 Highland Ave, Madison, WI 53792
Phone
(608) 263-8100
Enumerated
Feb 8, 2008
Record last updated
Mar 23, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(608) 263-0575
Medicare enrollment
Enrolled (PECOS I20110302000036); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest certified registered nurse anesthetist records → All 1,241 in Wisconsin → Look up another NPI →

Also registered at 600 Highland Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Michael AabergSurgery Physician1346991064
  2. Carrah Aadrik, CRNACertified Registered Nurse Anesthetist1326423286
  3. Daniel Abbott, MDSurgical Oncology Physician1750412615
  4. Alaa Abd-ElsayedPain Medicine Physician1194967703
  5. Safiyya Abdulkadir, MDRheumatology Physician1093455826
  6. Edwin Abel, M.D.Urology Physician1083800510

Verify Ilene Klassy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 4329    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. University OF Wisconsin Medical Foundation IncMadison, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ilene Klassy among 1,241 certified registered nurse anesthetist records in Wisconsin

Ilene Klassy, CRNA is one of 1,241 certified registered nurse anesthetist records with a practice address in Wisconsin. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 43% of them.

  • NPI issued2008 · 43% of these records are older, 54% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated2004 · median 2013 among the 932 with a school on file
  • Record last updated2015 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Certified Registered Nurse Anesthetist providers in Wisconsin

There are 1,241 certified registered nurse anesthetist records in Wisconsin.

All 1,241 in Wisconsin → Every provider in Madison → Certified Registered Nurse Anesthetist nationwide →

The 8 certified registered nurse anesthetist records with the nearest ZIP codes

  1. Kathleen Cooper, CRNAMadison, WI 537921992771943
  2. Cynthia Davis, CRNAMadison, WI 537921114993243
  3. Curtis Detro, CRNAMadison, WI 537921548237779
  4. Kathryn Fahrenkrug, CRNAMadison, WI 537921194791590
  5. Angela Ferguson, CRNAMadison, WI 537921467417782
  6. Trecia Gulseth, CRNAMadison, WI 537921164496683
  7. Nancy Gustafson, CRNAMadison, WI 537921700852753
  8. Doug Haley, CRNAMadison, WI 537921063488013

Common questions

What is Ilene Klassy, CRNA's NPI number?

Ilene Klassy, CRNA's National Provider Identifier (NPI) is 1477731719, issued on Feb 8, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Ilene Klassy, CRNA located?

The NPPES record lists a practice address at 600 Highland Ave, Madison, WI, 53792. Phone: (608) 263-8100. Providers update this record themselves, so call before visiting.

How can I verify Ilene Klassy, CRNA's license?

NPPES lists Wisconsin license number 4329, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.