Gary C. Steven, M.D.
Allergy Physician · Greenfield, WI
Gary C. Steven, M.D. is an allergy physician with a practice address in Greenfield, Wisconsin, and NPI 1972530699, issued on Jun 27, 2006. Check the license (Wisconsin 33574020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gary C. Steven
- Credential
- M.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- 33574020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 8585 W Forest Home Ave, Greenfield, WI 53228
- Phone
- (414) 529-8500
- Enumerated
- Jun 27, 2006
- Record last updated
- Jul 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (414) 529-8511
- Medicare enrollment
- Enrolled (PECOS I20090922000679); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 18 in Wisconsin → Look up another NPI →
Also registered at 8585 W Forest Home Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Koll, N.P.Nurse Practitioner1821245853
Verify Gary C. Steven in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 33574020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average allergy physician in 2024
1,711 Medicare Part D claims for 317 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 49% of claims.
Most prescribed
- Arnuity Ellipta124 claims
- Fluticasone Propionate118 claims
- Azelastine Hcl108 claims
- Albuterol Sulfate Hfa90 claims
- Omeprazole75 claims
- Symbicort74 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.
Industry payments in 2024: $22,254.81
94 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 502 providers of this specialty with any payment received $9,080.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Allergy Asthma And Sinus Center SCGreenfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary C. Steven among 18 allergy physician records in Wisconsin
Gary C. Steven, 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
- Graduated1991 · median 2006 among the 11 with a school on file
- Record last updated2020 · 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 Greenfield → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Mary Burnett, M.D.Wauwatosa, WI 532261437310596
- James Cranberg, M.D.Wauwatosa, WI 532261073665626
- Martin Lobel, MDMilwaukee, WI 532021124086236
- S. Kuwayama, MDHales Corners, WI 531301710904792
- Daniel HambrookWest Bend, WI 530951770665507
- Tad Johnson, MDJanesville, WI 535461659339919
- Mark BiagtanMadison, WI 537151376707307
- Helen Sanderson, MDMadison, WI 537151699274670
Common questions
What is Gary C. Steven, M.D.'s NPI number?
Gary C. Steven, M.D.'s National Provider Identifier (NPI) is 1972530699, issued on Jun 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary C. Steven, M.D. located?
The NPPES record lists a practice address at 8585 W Forest Home Ave, Greenfield, WI, 53228. Phone: (414) 529-8500. Providers update this record themselves, so call before visiting.
How can I verify Gary C. Steven, M.D.'s license?
NPPES lists Wisconsin license number 33574020, 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 Gary C. Steven, M.D. prescribe under Medicare Part D?
In 2024, Gary C. Steven, M.D. had 1,711 Medicare Part D claims for 317 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.