Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Gary C Steven, MD

Individual provider Specialist · NPI 1972530699

Dr. Gary C Steven, MD is an Allergy/Immunology in Greenfield, Wisconsin. Graduated from Medical College of Wisconsin in 1991, 35 years ago. Practices with Allergy Asthma and Sinus Center SC, a 3-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
35
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8585 W Forest Home Ave Ste 200
Greenfield, WI 53228-3417
Phone: (414) 529-8500
Fax: (414) 529-8511
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy Physician (primary) Taxonomy 207KA0200X · Licence 33574020 (WI)
Specialist Taxonomy 174400000X · Licence 33574020 (WI)

Record details

NPI number1972530699
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 27, 2006
Last updated in NPPESJuly 9, 2020
Certification dateJuly 9, 2020
Mailing address8585 W Forest Home Ave, Suite 200, Greenfield, WI 53228-3417

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1991 (35 years in practice)
Group practice Allergy Asthma And Sinus Center Sc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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