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

Marian M Hallowell, LICSW

Individual provider Social Worker · NPI 1396236600

Marian M Hallowell, LICSW is a Clinical Social Worker in Portsmouth, New Hampshire. Qualified in 2018, 8 years ago. Practices with Greater Seacoast Community Health, a 37-clinician group and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
8
Licensed in
NH
In the registry since
2018
Specialties on file
2
What do these letters mean?
LICSW — Licensed Independent Clinical Social Worker
The title some states use for an independently practising clinical social worker.

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Practice location Address checks out

8 Greenleaf Woods Dr Ste 100
Portsmouth, NH 03801-5436
Phone: (603) 422-8202
Fax: (603) 422-8219
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 2612 (NH)
Social Worker Taxonomy 104100000X

Record details

NPI number1396236600
Entity typeIndividual (Type 1)
GenderFemale
Credentials LICSW
Sole proprietorNo
NPI enumeratedMay 22, 2018
Last updated in NPPESSeptember 15, 2022
Certification dateSeptember 15, 2022

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Greater Seacoast Community Health — 37 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Portsmouth