Active NPI
Matthew Reidy Leach, M.D.
- Neurology Physician
- Chicago, IL
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Neurology Physician
- License
- 036-154712
- Practice address
- 4440 W. 95TH Street, Suite Aip
Chicago, IL 60453-0001 - Phone
- (219) 677-7866
- NPI assigned
- Apr 15, 2015
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Neurology Physician | 2084N0400X | 036-154712 | IL | Primary |
Addresses
Primary practice location
4440 W. 95TH Street, Suite Aip
Chicago, IL 60453-0001
Mailing address
29373 Network PL
Chicago, IL 60673-1293
Phone (847) 390-5900
Other practice location 1
1425 N Randall Rd
Elgin, IL 60123-2300
Phone (708) 283-5500
Other practice location 2
450 W Highway 22
Barrington, IL 60010-1919
Phone (708) 283-5500
Other practice location 3
3815 Highland Ave
Downers Grove, IL 60515-1500
Phone (708) 283-5500
Other practice location 4
1775 Dempster St
Park Ridge, IL 60068-1143
Phone (708) 283-5500
Electronic endpoints 3
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| FHIR URL | https://epicfhir.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/ | ||
| CONNECT URL | https://esmd.abilitynetwork.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service | Other | ABILITY Network |
| Direct Messaging Address | mleach305621@direct.myadvocateaurora.org | Direct |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in PA, IL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Neurology
- Education
- University of Michigan Medical School, 2015
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Advocate Health and Hospitals Corporation
Practice addresses (Care Compare)
4440 W 95TH St
Oak Lawn, IL 60453-2600
Hospital & facility affiliations
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Pacemaker insertion or repair | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 036-154712 | IL | MD | Neurology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Advocate Health and Hospitals Corporation | Current | Accepting new patients | |
| Upmc Community Medcine Inc | Current | Accepting new patients | |
| Advocate Health and Hospitals Corporation | Current | Accepting new patients | |
| Upmc Community Medicine, Inc | Current | Accepting new patients | |
| Advocate Health and Hospitals Corporation | Current | Accepting new patients | |
| Advocate Health and Hospitals Corporation | Current | Accepting new patients | |
| Upmc Community Medicine Inc | Current | Accepting new patients |
Locations
450 W Il Route 22
Ste Aip
Barrington, IL 60010
Phone (708) 283-5500
214 McHenry Rd
Buffalo Grove, IL 60089
Phone (847) 459-1160
28592 Network Pl
Chicago, IL 60673
29373 Network Pl
Chicago, IL 60673
3815 Highland Ave
Downers Grove, IL 60515
Phone (630) 275-5900
1425 N Randall Rd
Elgin, IL 60123
Phone (224) 783-5437
4440 W 95th St
Oak Lawn, IL 60453
Phone (708) 346-5520
4440 W 95th St
Ste Aip
Oak Lawn, IL 60453
Phone (708) 684-8000
1775 W Dempster St
Park Ridge, IL 60068
Phone (847) 723-5150
450 W State Route 22
South Barrington, IL 60010
Phone (847) 381-0123
339 6th Ave
Fl 5
Pittsburgh, PA 15222
Phone (412) 560-8762
200 Delafield Rd
Ste 2040
Pittsburgh, PA 15215
Phone (412) 782-5529
2 Hot Metal St
#1
Pittsburgh, PA 15203
Phone (412) 432-5866
Organizations & group practices 7
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
dba Advocate Intensivist Partners
- Critical Care Medicine (Internal Medicine) Physician
- Oak Lawn, IL
- NPI 1629441027
-
dba Advocate Medical Group
- Multi-Specialty Clinic/Center
- Oak Brook, IL
- NPI 1700824455
-
dba Stull, Jarvis and Spinola Internal Medicine Associates - UPMC
- Internal Medicine Physician
- Pittsburgh, PA
- NPI 1558976092
-
dba Advocate Children's Hospital
- Children's Hospital
- Oak Lawn, IL
- NPI 1508315516
-
dba Advocate Good Samaritan Hospital
- General Acute Care Hospital
- Downers Grove, IL
- NPI 1578670543
-
dba Hermitage Family Practice - UPMC
- Family Medicine Physician
- Hermitage, PA
- NPI 1023806676
-
dba Greater Pittsburgh Medical Assoc UPMC
- Internal Medicine Physician
- Pittsburgh, PA
- NPI 1831225960
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Advocate Children's Hospital
- Children's Hospital
- Oak Lawn, IL
- NPI 1508315516
-
dba Advocate Christ Medical Center
- General Acute Care Hospital
- Oak Lawn, IL
- NPI 1548375082
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1429056000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1772409600000",
"number": "1467849513",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "29373 NETWORK PL",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606731293",
"telephone_number": "847-390-5900"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "4440 W. 95TH STREET, SUITE AIP",
"city": "CHICAGO",
"state": "IL",
"postal_code": "604530001",
"telephone_number": "219-677-7866"
}
],
"practiceLocations": [
{
"address_1": "1425 N Randall Rd",
"address_purpose": "LOCATION",
"city": "Elgin",
"state": "IL",
"postal_code": "601232300",
"country_code": "US",
"telephone_number": "708-283-5500",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "450 W Highway 22",
"address_purpose": "LOCATION",
"city": "Barrington",
"state": "IL",
"postal_code": "600101919",
"country_code": "US",
"telephone_number": "708-283-5500",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "3815 Highland Ave",
"address_purpose": "LOCATION",
"city": "Downers Grove",
"state": "IL",
"postal_code": "605151500",
"country_code": "US",
"telephone_number": "708-283-5500",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "1775 Dempster St",
"address_purpose": "LOCATION",
"city": "Park Ridge",
"state": "IL",
"postal_code": "600681143",
"country_code": "US",
"telephone_number": "708-283-5500",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "LEACH",
"first_name": "MATTHEW",
"middle_name": "REIDY",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2015-04-15",
"last_updated": "2026-03-02",
"certification_date": "2026-03-02",
"status": "A"
},
"taxonomies": [
{
"code": "2084N0400X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Neurology",
"state": "IL",
"license": "036-154712",
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "FHIR",
"endpointTypeDescription": "FHIR URL",
"endpoint": "https://epicfhir.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
"affiliation": "N",
"address_1": "4440 W 95th St",
"city": "Oak Lawn",
"state": "IL",
"country_code": "US",
"postal_code": "604532600",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "CONNECT",
"endpointTypeDescription": "CONNECT URL",
"endpoint": "https://esmd.abilitynetwork.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service",
"affiliation": "Y",
"endpointDescription": "2.16.840.1.113883.3.667.2",
"affiliationName": "ABILITY Network",
"use": "OTHER",
"useDescription": "Other",
"useOtherDescription": "CMS esMD eMDR",
"contentType": "CSV",
"contentTypeDescription": "CSV",
"address_1": "64 S Price Rd Ste B",
"city": "Brownsville",
"state": "TX",
"country_code": "US",
"postal_code": "785212459",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "mleach305621@direct.myadvocateaurora.org",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"address_1": "4440 W 95th St",
"city": "Oak Lawn",
"state": "IL",
"country_code": "US",
"postal_code": "604532600",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Chicago, IL
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 2, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.