Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Gary C Steven, M.D.
Allergy Physician in Greenfield, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1972530699
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Registry record
Entity type Individual (Type 1)
Name Dr. Gary C Steven
Credential M.D.
Sex Male
Practice address 8585 W Forest Home Ave, Suite 200, Greenfield, WI, 53228
Phone (414) 529-8500
Fax (414) 529-8511
Enumeration date Jun 27, 2006
Last updated in NPPES Jul 9, 2020
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Where does Gary Steven practice?
The practice location on file with NPPES is in Greenfield, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Gary Steven?
The National Provider Identifier (NPI) for Gary Steven is 1972530699, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-09.