Active NPI
Susan Mezey Leib, MD
- Pediatrics Physician
- Philadelphia, PA
National Provider Identifier
1376515395
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatrics Physician
- License
- 25MA12694000
- Practice address
- 5501 Old York Rd
Paley 1
Philadelphia, PA 19141-3018 - Phone
- (215) 456-7170
- Fax
- (215) 456-4923
- NPI assigned
- Feb 3, 2006
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pediatrics Physician | 208000000X | MD439546 | PA | |
| Pediatrics Physician | 208000000X | 25MA12694000 | NJ | Primary |
Addresses
Primary practice location
5501 Old York Rd
Paley 1
Philadelphia, PA 19141-3018
Mailing address
PO Box 8500-8735
Philadelphia, PA 19178-0001
Phone (215) 456-7000
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 001306465 | Medicaid | CT |
Other names 1
- Susan Mezey
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | susan.leib@direct.einstein.edu | Direct |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in PA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 25MA12694000 | NJ | MD | Pediatrics Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Einstein Practice Plan Inc | Current | Accepting new patients | |
| Einstein Practice Plan Inc | Current | Accepting new patients | |
| Einstein Practice Plan Inc | Pediatrics | Current | Accepting new patients |
Locations
5501 York Rd
Ste 1
Philadelphia, PA 19141
Phone (215) 456-6500
5501 York Rd
Philadelphia, PA 19141
Phone (215) 456-7405
5501 York Rd
Ste 202
Philadelphia, PA 19141
Phone (215) 254-2630
Interoperability endpoints
- susan.leib@direct.einstein.edu
Organizations & group practices 3
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.
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- NPI 1457047433
-
- Pediatrics Physician
- Phila, PA
- NPI 1730132028
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1138924800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1761264000000",
"number": "1376515395",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 8500-8735",
"city": "PHILADELPHIA",
"state": "PA",
"postal_code": "191780001",
"telephone_number": "215-456-7000",
"fax_number": "215-254-3289"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "5501 OLD YORK RD",
"address_2": "PALEY 1",
"city": "PHILADELPHIA",
"state": "PA",
"postal_code": "191413018",
"telephone_number": "215-456-7170",
"fax_number": "215-456-4923"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LEIB",
"first_name": "SUSAN",
"middle_name": "MEZEY",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-02-03",
"last_updated": "2025-10-24",
"certification_date": "2025-10-24",
"status": "A"
},
"taxonomies": [
{
"code": "208000000X",
"taxonomy_group": "",
"desc": "Pediatrics",
"state": "PA",
"license": "MD439546",
"primary": false
},
{
"code": "208000000X",
"taxonomy_group": "",
"desc": "Pediatrics",
"state": "NJ",
"license": "25MA12694000",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "001306465",
"state": "CT"
}
],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "susan.leib@direct.einstein.edu",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"address_1": "5501 Old York Rd",
"city": "Philadelphia",
"state": "PA",
"country_code": "US",
"postal_code": "191413018",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": [
{
"first_name": "SUSAN",
"last_name": "MEZEY",
"code": "1",
"type": "Former Name"
}
]
}
Other providers in Philadelphia, PA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 24, 2025; 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.