NPPES file of Aug 9, 2026

Megan Elizabeth Tillema, AA

Anesthesiologist Assistant · La Crosse, WI

Megan Elizabeth Tillema, AA is an anesthesiologist assistant with a practice address in La Crosse, Wisconsin, and NPI 1972218303, issued on Jan 19, 2023. Check the license (Wisconsin 525, 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
1972218303
Name
Megan Elizabeth Tillema
Credential
AA
Primary taxonomy
Anesthesiologist Assistant 367H00000X
License number
525 WI
Self-reported in NPPES; status is on the state search
Practice location
1836 South Ave, La Crosse, WI 54601
Phone
(608) 782-7300
Enumerated
Jan 19, 2023
Record last updated
Jan 19, 2023
Medicare enrollment
Enrolled (PECOS I20230216001950); 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 anesthesiologist assistant records → All 264 in Wisconsin → Look up another NPI →

Also registered at 1836 South Ave

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

  1. Frank Aberger, MDGastroenterology Physician1396748711
  2. Bradley Abicht, DPMPodiatrist1962632166
  3. Carter Abicht, DOAnesthesiology Physician1932736642
  4. Grace AbichtCertified Registered Nurse Anesthetist1003651555
  5. Paul Abicht, CRNACertified Registered Nurse Anesthetist1528061843
  6. Mateen Abidi, M.DCardiovascular Disease Physician1730333980

Verify Megan Elizabeth Tillema 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 525    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. Gundersen Lutheran Medical Center IncLa Crosse, WI

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

Megan Elizabeth Tillema among 264 anesthesiologist assistant records in Wisconsin

Megan Elizabeth Tillema, AA is one of 264 anesthesiologist assistant records with a practice address in Wisconsin. 95% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 73% of them.

  • NPI issued2023 · 73% of these records are older, 19% newer
  • In a Medicare fileYes · 95% of these records are
  • In the CMS Doctors and Clinicians fileYes · 93% of these records are
  • Graduated2022 · median 2020 among the 246 with a school on file
  • Record last updated2023 · 32% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367H00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiologist Assistant providers in Wisconsin

There are 264 anesthesiologist assistant records in Wisconsin.

All 264 in Wisconsin → Every provider in La Crosse → Anesthesiologist Assistant nationwide →

The 8 anesthesiologist assistant records with the nearest ZIP codes

  1. Heather Behn, AALa Crosse, WI 546011477956894
  2. Cayla Dittmer, CAALa Crosse, WI 546011669857660
  3. Leanna Duerst, AALa Crosse, WI 546011104131796
  4. Sarah Harter, A.A.La Crosse, WI 546011851641120
  5. Stewart Heaton, AALa Crosse, WI 546011043611320
  6. Chi-Seng Lam, AALa Crosse, WI 546011013913136
  7. Jack Lund, AA-CLa Crosse, WI 546011710028600
  8. Emily Mahutga, AALa Crosse, WI 546011417338666

Common questions

What is Megan Elizabeth Tillema, AA's NPI number?

Megan Elizabeth Tillema, AA's National Provider Identifier (NPI) is 1972218303, issued on Jan 19, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Megan Elizabeth Tillema, AA located?

The NPPES record lists a practice address at 1836 South Ave, La Crosse, WI, 54601. Phone: (608) 782-7300. Providers update this record themselves, so call before visiting.

How can I verify Megan Elizabeth Tillema, AA's license?

NPPES lists Wisconsin license number 525, 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.