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

John Martin Litterst, MA

Individual provider Mental Health Counselor · NPI 1578382131

John Martin Litterst, MA is a Mental Health Counselor in Portsmouth, New Hampshire. Registered with an NPI since 2024.

In the registry since
2024
What do these letters mean?
MA — Master of Arts
A graduate arts degree.

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Practice location Address checks out

1145 Sagamore Ave
Portsmouth, NH 03801
Phone: (603) 431-6703
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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

Record details

NPI number1578382131
Entity typeIndividual (Type 1)
GenderMale
Credentials MA
Sole proprietorNo
NPI enumeratedOctober 9, 2024
Last updated in NPPESOctober 9, 2024
Certification dateOctober 4, 2024

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