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GARY J LEO D.O
NPI 1336182237
Psychiatry & Neurology - Neurology in Milwaukee, WI

Active since June 14, 2006PECOS Enrolled
2311 N PROSPECT AVE, MILWAUKEE, WI 53211(414) 319-3000(414) 319-3033 Get Directions Write a Review

NPPES record last updated: February 19, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gary J Leo D.o NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GARY J LEO D.O (NPI 1336182237) is an individual neurology provider in Milwaukee, Wisconsin, licensed in Wisconsin (23807) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1336182237
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameGARY J LEOCredential: D.O
Location Address2311 N PROSPECT AVEMilwaukee, WI 53211-4445
Mailing Address4425 N Port Washington Rd, Csmcp Clinic CredentialingGlendale, WI 53212-1082 · (414) 319-3000 · Fax (414) 319-3033
Phone(414) 319-3000
Fax(414) 319-3033
Sole ProprietorNo
Enumeration DateJune 14, 2006
Last NPPES UpdateFebruary 19, 2013
✔ NPI 1336182237 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in WI · 23807
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
2311 N PROSPECT AVE, Milwaukee, WI 53211
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gary J Leo D.o is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Gary Leo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Columbia St. Mary's Hospital Milwaukee Inc
0.2 mi
Multi-Specialty
2323 N LAKE DR
Milwaukee, WI 53211
  • Reassigned Medicare billing, Wisconsin enrollment
  • Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
  • 856 clinicians in this Medicare group
NPI 1225071491 (414) 585-1000
Ascension Medical Group-Southeast Wisconsin Inc
0.2 mi
Anesthesiology
2301 N LAKE DR
Milwaukee, WI 53211
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,343 clinicians in this Medicare group
NPI 1194473066 (414) 585-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53211 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 12

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
11 suppliers40 claims40 services$32.52 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
4 suppliers29 claims29 services$76.02 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
5 suppliers28 claims84 services$29.61 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
8 suppliers25 claims143 services$13.16 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
5 suppliers15 claims89 services$12.65 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
10 suppliers46 claims46 services$43.45 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MARY GRACE HERNANDEZ LASQUETY M.D.
Family Medicine
2311 N PROSPECT AVE
MILWAUKEE, WI 53211
Milwaukee County (414) 319-3000
DR. PEDRO M. BANDA MD
Urology
2311 N PROSPECT AVE
MILWAUKEE, WI 53211
Milwaukee County (414) 319-3000
DR. TAMARA A ADDUCCI MD
Obstetrics & Gynecology
2311 N PROSPECT AVE
MILWAUKEE, WI 53211
Milwaukee County (414) 319-3000
MS. MICHELLE BARCELONA FNP
Nurse Practitioner (Family)
2311 N PROSPECT AVE
MILWAUKEE, WI 53211
Milwaukee County (414) 319-3000
DR. DAVID S. SANDOCK MD
Urology
2311 N PROSPECT AVE
MILWAUKEE, WI 53211
Milwaukee County (414) 319-3000
DR. MAURICE WENDELL CHUNG M.D.
Internal Medicine (Gastroenterology)
2311 N PROSPECT AVE
MILWAUKEE, WI 53211
Milwaukee County (414) 319-3000
SALOMON COHEN COHEN MD
Neurological Surgery
2311 N PROSPECT AVE
MILWAUKEE, WI 53211
Milwaukee County (414) 319-3000
LINDA P PEREZ APNP
Nurse Practitioner (Family)
2311 N PROSPECT AVE
MILWAUKEE, WI 53211
Milwaukee County (414) 319-3000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gary Leo's NPI number?

The NPI number for Gary Leo is 1336182237. It was assigned to this individual provider in the NPPES registry on June 14, 2006.

Where is Gary Leo located?

Gary Leo practices at 2311 N Prospect Ave, Milwaukee, WI 53211. The listed phone number is (414) 319-3000.

What is Gary Leo's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Gary Leo enrolled in Medicare?

Yes. Gary Leo is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Gary Leo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Leo reassigns Medicare benefits to 2 organizations: Columbia St. Mary's Hospital Milwaukee Inc (Milwaukee, WI) and Ascension Medical Group-Southeast Wisconsin Inc (Milwaukee, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gary Leo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Gary Leo was last updated on February 19, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.