Gary J. Leo, D.O
Neurology Physician · Milwaukee, WI
Gary J. Leo, D.O is a neurology physician with a practice address in Milwaukee, Wisconsin, and NPI 1336182237, issued on Jun 14, 2006. Check the license (Wisconsin 23807, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gary J. Leo
- Credential
- D.O
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 23807 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2311 N Prospect Ave, Milwaukee, WI 53211
- Phone
- (414) 319-3000
- Enumerated
- Jun 14, 2006
- Record last updated
- Feb 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (414) 319-3033
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 399 in Wisconsin → Look up another NPI →
Also registered at 2311 N Prospect Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gary J. Leo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 23807Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gary J. Leo among 399 neurology physician records in Wisconsin
Gary J. Leo, D.O is one of 399 neurology physician records with a practice address in Wisconsin. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 53% newer
- In a Medicare fileNo · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2013 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Wisconsin
There are 399 neurology physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 399 in Wisconsin → Every provider in Milwaukee → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Joanna Galezowska, MDMilwaukee, WI 532111205905288
- Hendrikus Krouwer, MDMilwaukee, WI 532111770534513
- William Taylor, DOMilwaukee, WI 532111134582729
- Elizabeth Traynor, MDMilwaukee, WI 532111740203835
- Rizwanullah Arain, M.D.Milwaukee, WI 532101861489536
- Thomas Marra, MDMilwaukee, WI 532121841307303
- Kate Essad, M.D.Milwaukee, WI 532091497098123
- Kathryn Gaines, DOMilwaukee, WI 532091629059183
Common questions
What is Gary J. Leo, D.O's NPI number?
Gary J. Leo, D.O's National Provider Identifier (NPI) is 1336182237, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary J. Leo, D.O located?
The NPPES record lists a practice address at 2311 N Prospect Ave, Milwaukee, WI, 53211. Phone: (414) 319-3000. Providers update this record themselves, so call before visiting.
How can I verify Gary J. Leo, D.O's license?
NPPES lists Wisconsin license number 23807, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.