William Guyler Niver
CSW | Addiction (Substance Use Disorder) Counselor
17 Main St, Cortland
New York, 13045-6606
607-756-4167 607-753-0608
Maps & DirectionsWilliam Guyler Niver is a Cortland, New York based counselor who is specialized as Addiction (Substance Use Disorder) Counselor. Active license number of William Guyler Niver is 8695 for Addiction (Substance Use Disorder) Counselor in New York. His current practice location is 17 Main St, Cortland. Patients can book an appointment with him at 607-756-4167.
William Guyler Niver 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.
Complete Profile:
William Guyler Niver 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: | William Guyler Niver |
| Specialization: | Addiction (Substance Use Disorder) Counselor |
| Gender: | Male |
| Credentials: | CSW |
| Accepts Medicare Assignment: | No |
| Practice Address: | 17 Main St, Cortland,
New York, 13045-6606 |
| Phone: | 607-756-4167 |
| Fax: | 607-753-0608 |
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: | 1821318254 |
| NPI Enumeration Date: | 08 Jun, 2010 |
| NPI Last Update On: | 08 Jun, 2010 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for William Guyler Niver are as mentioned below.
| License Number | Specialization | State | Status | |
| 8695 | Addiction (Substance Use Disorder) Counselor | New York | Primary | |
Other Medical Identifiers:
Other legacy medical identifiers associated with William Guyler Niver such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
| Identifier | Type | State | Issuer |
| 02525840 | Medicaid | New York | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | 17 Main St,
Cortland, New York |
| Zip: | 13045-6606 |
| Phone Number: | 607-756-4167 |
| Fax Number: | 607-753-0608 |
Patients can reach William Guyler Niver at
17 Main St, Cortland, New York or can
call to book an appointment on 607-756-4167.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 13 October, 2025.