Addiction Therapist

Harold Sequeira, LCSW-R

11 Route 111, Smithtown, New York, 11787-3754

About Harold Sequeira

Harold Sequeira is a therapist based in Smithtown, New York who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of Harold Sequeira is R051591-1 for Addiction (Substance Use Disorder) Counselor in New York. His current practice location is 11 Route 111, Smithtown. Patients can reach him at 631-920-8310. Harold Sequeira is LCSW-R in Addiction (Substance Use Disorder) Counselor and his NPI number (Unique professional ID assigned by NPPES) is 1922169390.

Harold Sequeira is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. He helps his 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.

Practice Information

Harold Sequeira speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Harold Sequeira
Specialization Addiction (Substance Use Disorder) Counselor
Credentials LCSW-R
Gender Male
Practice Address: 11 Route 111,
Smithtown, NY - 11787-3754

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 Number1922169390
NPI Enumeration Date: 12 Dec, 2006
NPI Last Update On: 12 Mar, 2025

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Harold Sequeira are as mentioned below.

License NumberSpecializationStateStatus
R051591-1Addiction (Substance Use Disorder) Counselor New YorkPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Harold Sequeira
11 Route 111,
Smithtown, NY - 11787-3754
Phone: 631-920-8310

Book an Appointment with Harold Sequeira

To schedule an appointment, contact Harold Sequeira at 11 Route 111, Smithtown, New York or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Harold Sequeira:

Harold Sequeira is a therapist specializing in Addiction (Substance Use Disorder) Counselor. He is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. He helps his 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.

Yes, Harold Sequeira is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Harold Sequeira practices at 11 Route 111, Smithtown, New York, 11787-3754.

To schedule an appointment with Harold Sequeira, please contact the office at 631-920-8310.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.