Mrs. Gwendolyn Marcella Blacknall

LGADC | Addiction (Substance Use Disorder) Counselor


  65 Duke St Ste 203, Prince Frederick
     Maryland, 20678-6128
  443-824-4818    Maps & Directions
Mrs. Gwendolyn Marcella Blacknall is a Prince Frederick, Maryland based counselor who is specialized as Addiction (Substance Use Disorder) Counselor. Active license number of Mrs. Gwendolyn Marcella Blacknall is LGA2466 for Addiction (Substance Use Disorder) Counselor in Maryland. Her current practice location is 65 Duke St Ste 203, Prince Frederick. Patients can book an appointment with her at 443-824-4818.
Mrs. Gwendolyn Marcella Blacknall 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. Gwendolyn Marcella Blacknall 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. Gwendolyn Marcella Blacknall
Specialization: Addiction (Substance Use Disorder) Counselor
Gender:Female
Credentials: LGADC
Accepts Medicare Assignment:No
Practice Address:65 Duke St Ste 203, Prince Frederick,
Maryland, 20678-6128
Phone:443-824-4818
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: 1275171217
NPI Enumeration Date: 19 Dec, 2019
NPI Last Update On: 19 Dec, 2019

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. Gwendolyn Marcella Blacknall are as mentioned below.
License NumberSpecializationStateStatus
LGA2466Addiction (Substance Use Disorder) Counselor MarylandPrimary
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
Address: 65 Duke St,
Prince Frederick, Maryland
Zip: 20678-6128
Phone Number: 443-404-5751
Patients can reach Mrs. Gwendolyn Marcella Blacknall at 65 Duke St Ste 203, Prince Frederick, Maryland or can call to book an appointment on 443-824-4818.
*Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 July, 2025.

Comments/ Reviews: