Gary Leo, D.O
NPI 1336182237 · Neurology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Leo, D.O is a Neurology Physician provider in Milwaukee, WI (NPI 1336182237).
Provider details
- NPI number
- 1336182237
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O
- Sex
- Male
- Sole proprietor
- No
- License
- 23807 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-14
- Last updated
- 2013-02-19
Frequently asked questions
- What is Gary Leo's NPI number?
- Gary Leo's National Provider Identifier (NPI) is 1336182237, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Leo's specialty?
- Gary Leo is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Leo located?
- Gary Leo's practice location on file with NPPES is 2311 N Prospect Ave, Milwaukee, WI 53211-4445.
- What is Gary Leo's phone number?
- The practice phone number listed in the NPPES registry for Gary Leo is (414) 319-3000.
- Does Gary Leo accept Medicare?
- Gary Leo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Leo's NPI active?
- Yes — Gary Leo's NPI (1336182237) is active in the NPPES registry as of the last update on 2013-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.