Mrs. Meryl Susan Leff

LCSW, CASAC, BCD | Addiction (Substance Use Disorder) Counselor


  400 W Main St, Suite 338, Babylon
     New York, 11702-3012
  631-893-6355    631-893-6355 Maps & Directions
Mrs. Meryl Susan Leff is a Babylon, New York based counselor who is specialized as Addiction (Substance Use Disorder) Counselor. Active license number of Mrs. Meryl Susan Leff is R049140-1 for Social Worker in New York. Her current practice location is 400 W Main St, Suite 338, Babylon. Patients can book an appointment with her at 631-893-6355.
Mrs. Meryl Susan Leff is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. She helps her clients by manage and overcome the psychological, emotional, and behavioral challenges related to substance use. Counselors also work closely with families and support systems to help them better understand their loved one’s illness. SUD counselors help to promote long-term sobriety, emotional stability, and overall mental wellness for both the individual and their family.
Complete Profile:
Mrs. Meryl Susan Leff speciality, credentials, practice address, contact phone number and fax are as below. Patients can directly walk in or can call on the below given phone number for appointment.
Name: Mrs. Meryl Susan Leff
Specialization: Addiction (Substance Use Disorder) Counselor
Gender:Female
Credentials: LCSW, CASAC, BCD
Accepts Medicare Assignment:No
Practice Address:400 W Main St, Suite 338, Babylon,
New York, 11702-3012
Phone:631-893-6355
Fax:631-893-6355
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.
NPI Number: 1689767592
NPI Enumeration Date: 02 Oct, 2006
NPI Last Update On: 09 Jul, 2007

Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Mrs. Meryl Susan Leff are as mentioned below.
License NumberSpecializationStateStatus
R049140-1Social Worker New YorkPrimary
10712Addiction (Substance Use Disorder) Counselor New YorkSecondary
R049140-1Social Worker New YorkSecondary
Other Medical Identifiers:
Other legacy medical identifiers associated with Mrs. Meryl Susan Leff such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
2649282OtherNew YorkAETNA PROVIDER ID
87726OtherNew YorkUN. BEH. HEALTH PROV ID
131751OtherNew YorkVYTRA PROVIDER ID
161543 MHSOtherNew YorkVALUE OPTIONS PROVIDER ID
7480430OtherNew YorkGHI PROVIDER ID
NX4021OtherNew YorkBLUE CROSS PROVIDER ID
02116558MedicaidNew York
1435082OtherNew YorkCIGNA PROVIDER ID
P2559539OtherNew YorkOXFORD PROVIDER ID
303899OtherMHN
42259POtherNew YorkHIP PROVIDER ID
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
Address: 400 W Main St, Suite 338
Babylon, New York
Zip: 11702-3012
Phone Number: 631-893-6355
Fax Number: 631-893-6355
Patients can reach Mrs. Meryl Susan Leff at 400 W Main St, Suite 338, Babylon, New York or can call to book an appointment on 631-893-6355.
*Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 09 June, 2025.

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