Steven L. Kagen, M.D.
Allergy Physician · Appleton, WI
Steven L. Kagen, M.D. is an allergy physician with a practice address in Appleton, Wisconsin, and NPI 1235175589, issued on Jun 22, 2006. Check the license (Wisconsin 22210-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Steven L. Kagen
- Credential
- M.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- 22210-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 100 W Lawrence St Ste 410, Appleton, WI 54911
- Phone
- (920) 739-9100
- Enumerated
- Jun 22, 2006
- Record last updated
- Apr 24, 2026
- Fax
- (920) 739-8779
- Medicaid ID
- 30392500 WI
- Medicare enrollment
- Enrolled (PECOS I20070215000028); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1976
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 18 in Wisconsin → Look up another NPI →
Verify Steven L. Kagen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 22210-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average allergy physician in 2024
662 Medicare Part D claims for 109 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Montelukast Sodium62 claims
- Fluticasone-Salmeterol54 claims
- Fluticasone Propionate47 claims
- Albuterol Sulfate Hfa42 claims
- Ipratropium Bromide38 claims
- Famotidine31 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Steven L. Kagen among 18 allergy physician records in Wisconsin
Steven L. Kagen, M.D. is one of 18 allergy physician records with a practice address in Wisconsin. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 33% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1976 · median 2006 among the 11 with a school on file
- Record last updated2026 · 72% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in Wisconsin
There are 18 allergy physician records in Wisconsin.
All 18 in Wisconsin → Every provider in Appleton → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Eun Young Kim, M.D.Oshkosh, WI 549021093708356
- Marshall Cusic, M.D.Marshfield, WI 544491487753406
- David Edmondson, DOWausau, WI 544011124079033
- Robert Bush, MDMadison, WI 537921881660801
- Mark Moss, MDMadison, WI 537921093781163
- Courtney GaberinoMadison, WI 537181689170979
- Ivana Surjancev, MDMadison, WI 537181801425814
- Ravi Viswanathan, MDMadison, WI 537171326084534
Common questions
What is Steven L. Kagen, M.D.'s NPI number?
Steven L. Kagen, M.D.'s National Provider Identifier (NPI) is 1235175589, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Steven L. Kagen, M.D. located?
The NPPES record lists a practice address at 100 W Lawrence St Ste 410, Appleton, WI, 54911. Phone: (920) 739-9100. Providers update this record themselves, so call before visiting.
How can I verify Steven L. Kagen, M.D.'s license?
NPPES lists Wisconsin license number 22210-020, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Steven L. Kagen, M.D. prescribe under Medicare Part D?
In 2024, Steven L. Kagen, M.D. had 662 Medicare Part D claims for 109 beneficiaries; the average among allergy physician prescribers was 750. Part D covers Medicare prescriptions 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.
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.