Is this information incorrect? This page shows public data from NPPES. Update your record in NPPES and this page will update automatically within 7 days.
Individual
WILLIAM MARSHALL JOHNSTON
Active
Individual
WILLIAM MARSHALL JOHNSTON
Active
Sole proprietor
Yes
Provider details
NPI number
Gender
Man
Credential
MA, LMHC, LCAC
Taxonomy
Speciality
Code
Description
License number
State
101Y00000X
Counselor
39001990A
IN
101YA0400X
Addiction (Substance Use Disorder) Counselor
87000650A
IN
101YM0800X
Mental Health Counselor
Primary
39001990A
IN
102L00000X
Psychoanalyst
39001990A
IN
106H00000X
Marriage & Family Therapist
39001990A
IN
Other
Enumeration date
07/22/2008
Last updated
03/13/2024
About Stedi
Stedi is the only programmable healthcare clearinghouse. You can use Stedi's APIs to process eligibility checks, claims, remits, and more.
Sign upProduct
Developers