Therapist

William Marshall Johnston, MA, LMHC, LCAC

13295 Illinois St Ste 139, Carmel, Indiana, 46032-3020

About William Marshall Johnston

William Marshall Johnston is a therapist based in Carmel, Indiana who is specialized in Counselor. Active license number of William Marshall Johnston is 39001990A for Mental Health Counselor in Indiana. His current practice location is 13295 Illinois St Ste 139, Carmel. Patients can reach him at 317-900-6109. William Marshall Johnston is MA, LMHC, LCAC in Counselor and his NPI number (Unique professional ID assigned by NPPES) is 1336304104.

William Marshall Johnston is a trained and licensed mental health professional who helps individuals, couples, or groups manage and overcome emotional, psychological, behavioral, or relationship challenges. He works with people dealing with anxiety, depression, mood disorders, trauma, post-traumatic stress disorder (PTSD), grief and loss etc. He support his clients by understanding their thoughts, emotions, and behaviors.

Practice Information

William Marshall Johnston 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 William Marshall Johnston
Specialization Counselor
Credentials MA, LMHC, LCAC
Gender Male
Practice Address: 13295 Illinois St Ste 139,
Carmel, IN - 46032-3020

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 Number1336304104
NPI Enumeration Date: 22 Jul, 2008
NPI Last Update On: 13 Mar, 2024

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 William Marshall Johnston are as mentioned below.

License NumberSpecializationStateStatus
39001990AMental Health Counselor IndianaPrimary
39001990ACounselor IndianaSecondary
87000650AAddiction (Substance Use Disorder) Counselor IndianaSecondary
39001990APsychoanalyst IndianaSecondary
39001990AMarriage & Family Therapist IndianaSecondary

Mailing Address

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

William Marshall Johnston
13295 Illinois St Ste 139,
Carmel, IN - 46032-3020
Phone: 317-900-6109

Book an Appointment with William Marshall Johnston

To schedule an appointment, contact William Marshall Johnston at 13295 Illinois St Ste 139, Carmel, Indiana or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about William Marshall Johnston:

William Marshall Johnston is a therapist specializing in Mental Health Counselor. He is a licensed professional who helps individuals, couples, and families manage and overcome emotional, psychological, and behavioral challenges. He assess clients’ mental health conditions and develop personalized treatment plans to provide therapy for a range of mental health issues, including anxiety, depression, trauma, relationship issues, stress, grief, and life transitions.

Yes, William Marshall Johnston is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

William Marshall Johnston practices at 13295 Illinois St Ste 139, Carmel, Indiana, 46032-3020.

To schedule an appointment with William Marshall Johnston, please contact the office at 317-900-6109.

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