Active NPI
Meryl Susan Leff, LCSW, CASAC, BCD
- Addiction (Substance Use Disorder) Counselor
- Babylon, NY
National Provider Identifier
1689767592
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Addiction (Substance Use Disorder) Counselor
- License
- 10712
- Practice address
- 400 W Main St
Suite 338
Babylon, NY 11702-3012 - Phone
- (631) 893-6355
- Fax
- (631) 893-6355
- NPI assigned
- Oct 2, 2006
- Sex
- Female
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Addiction (Substance Use Disorder) Counselor | 101YA0400X | 10712 | NY | Primary |
| Clinical Social Worker | 1041C0700X | R049140-1 | NY |
Addresses
Primary practice location
400 W Main St
Suite 338
Babylon, NY 11702-3012
Mailing address
400 W Main St
Suite 338
Babylon, NY 11702-3012
Phone (631) 893-6355
Other identifiers 11
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2649282 | Other | NY | AETNA PROVIDER ID |
| 87726 | Other | NY | UN. BEH. HEALTH PROV ID |
| 131751 | Other | NY | VYTRA PROVIDER ID |
| 161543 MHS | Other | NY | VALUE OPTIONS PROVIDER ID |
| 7480430 | Other | NY | GHI PROVIDER ID |
| NX4021 | Other | NY | BLUE CROSS PROVIDER ID |
| 02116558 | Medicaid | NY | |
| 1435082 | Other | NY | CIGNA PROVIDER ID |
| P2559539 | Other | NY | OXFORD PROVIDER ID |
| 303899 | Other | MHN | |
| 42259P | Other | NY | HIP PROVIDER ID |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: No
- Power mobility devices: No
- Hospice: No
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20071001000671 | NY | Practitioner - Clinical Social Worker | 0446345797 | Practice locations: Bay Shore, NY |
Care Compare profile
Medicare Care Compare- Specialty
- Clinical Social Worker
- Education
- Other, 1994
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
Practice addresses (Care Compare)
208 Captains Way
Bay Shore, NY 11706-8117
Phone (631) 893-6355
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 10712 | NY | MD | Addiction (Substance Use Disorder) Counselor |
| R049140-1 | NY | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1159747200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1689767592",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "400 W MAIN ST",
"address_2": "SUITE 338",
"city": "BABYLON",
"state": "NY",
"postal_code": "117023012",
"telephone_number": "631-893-6355",
"fax_number": "631-893-6355"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "400 W MAIN ST",
"address_2": "SUITE 338",
"city": "BABYLON",
"state": "NY",
"postal_code": "117023012",
"telephone_number": "631-893-6355",
"fax_number": "631-893-6355"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LEFF",
"first_name": "MERYL",
"middle_name": "SUSAN",
"name_prefix": "Mrs.",
"credential": "LCSW, CASAC, BCD",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2006-10-02",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "101YA0400X",
"taxonomy_group": "",
"desc": "Counselor, Addiction (Substance Use Disorder)",
"state": "NY",
"license": "10712",
"primary": true
},
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "NY",
"license": "R049140-1",
"primary": false
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "AETNA PROVIDER ID",
"identifier": "2649282",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "UN. BEH. HEALTH PROV ID",
"identifier": "87726",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "VYTRA PROVIDER ID",
"identifier": "131751",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "VALUE OPTIONS PROVIDER ID",
"identifier": "161543 MHS",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "GHI PROVIDER ID",
"identifier": "7480430",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BLUE CROSS PROVIDER ID",
"identifier": "NX4021",
"state": "NY"
},
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "02116558",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "CIGNA PROVIDER ID",
"identifier": "1435082",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "OXFORD PROVIDER ID",
"identifier": "P2559539",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "MHN",
"identifier": "303899",
"state": null
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "HIP PROVIDER ID",
"identifier": "42259P",
"state": "NY"
}
],
"endpoints": [],
"other_names": []
}Other providers in Babylon, NY
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 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.
- 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.