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

Mr. Dennis Walker, LICSW

Individual provider Clinical Social Worker · NPI 1174569115

Mr. Dennis Walker, LICSW is a Clinical Social Worker in Portsmouth, New Hampshire. Qualified in 1993, 33 years ago. Practices with Seacoast Mental Health Center Inc, a 45-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and New Hampshire.

Years since qualifying
33
Licensed in
MA, NH
In the registry since
2006
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

1145 Sagamore Ave
Portsmouth, NH 03801-5503 Not confirmed with CMS for 13 years — call before visiting
Phone: (603) 431-6703
Fax: (603) 430-3753
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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 1654 (NH)
Clinical Social Worker Taxonomy 1041C0700X · Licence 1025795 (MA)

Record details

NPI number1174569115
Entity typeIndividual (Type 1)
GenderMale
Credentials LICSW
Sole proprietorNo
NPI enumeratedJune 20, 2006
Last updated in NPPESAugust 16, 2013

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Seacoast Mental Health Center Inc — 45 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients76
Services billed 315 a service is one billed item, such as a visit, a test or a procedure
Average patient age56

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Seacoast Mental Health Center Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 45 clinicians in the practice; 12 are shown here.

Other providers in Portsmouth