Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John P Marker, MA, LMHC

Individual provider Mental Health Counselor · NPI 1629267786

John P Marker, MA, LMHC is a Mental Health Counselor in Greenwood, Indiana. Qualified in 2004, 22 years ago. Practices with Generations Counseling Services, LLC, a 4-clinician group. Licensed in Indiana.

Years since qualifying
22
Licensed in
IN
In the registry since
2007
What do these letters mean?
MA — Master of Arts
A graduate arts degree.
LMHC — Licensed Mental Health Counselor
A licensed mental health counsellor; the title used in Florida, New York and Washington among others.

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Practice location Address checks out

435 E Main St Ste 200
Greenwood, IN 46143-1457
Phone: (317) 743-8202
Fax: (317) 743-8276
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence 39002010A (IN)

Record details

NPI number1629267786
Entity typeIndividual (Type 1)
GenderMale
Credentials MA , LMHC
Sole proprietorNo
NPI enumeratedOctober 15, 2007
Last updated in NPPESApril 25, 2023
Certification dateApril 25, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMENTAL HEALTH COUNSELOR
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Generations Counseling Services, Llc — 4 clinicians
Accepts Medicare assignment Not indicated

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