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ALISSA DILLON MED
NPI 1174643381
Counselor - Mental Health in Portsmouth, NH

Active since March 30, 2007Opted out of Medicare · through Feb 4, 2028
1145 SAGAMORE AVE, PORTSMOUTH, NH 03801(603) 431-6703(603) 430-3753 Get Directions Write a Review

NPPES record last updated: November 5, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 5, 2025, Nov 18, 2020 (2 updates tracked since 2020).

About Alissa Dillon Med NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALISSA DILLON MED (NPI 1174643381) is an individual mental health provider in Portsmouth, New Hampshire, licensed in Massachusetts (6418) and active in the NPI registry since March 2007. She has opted out of Medicare through February 4, 2028 and maintains a secondary practice location in Exeter.

NPPES Registry Identity

NPI1174643381
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameALISSA DILLONCredential: MED
Location Address1145 SAGAMORE AVEPortsmouth, NH 03801-5585
Mailing Address23 W Shore Park RdKingston, NH 03848-3548 · (978) 857-6549
Phone(603) 431-6703
Fax(603) 430-3753
Sole ProprietorYes
Enumeration DateMarch 30, 2007
Last NPPES UpdateNovember 5, 20252 updates tracked since enumeration
NPPES CertifiedNovember 5, 2025
✔ NPI 1174643381 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in MA · 6418
1145 SAGAMORE AVE, Portsmouth, NH 03801
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Other Names 1

Former Name (1)Alissa Voss

Secondary Practice Location 1

Location 114 Front St Ste 3-4Exeter, NH 03833-2779 · Phone (978) 857-6549

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Alissa Dillon Med has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from February 4, 2026 through February 4, 2028.

Opt-Out Effective DateFebruary 4, 2026
Opt-Out In Effect ThroughFebruary 4, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HEATH GRAY
Counselor (Mental Health)
1145 SAGAMORE AVE
PORTSMOUTH, NH 03801
Rockingham County (603) 431-6703
MR. PHILIP GIBSON
Social Worker (Clinical)
1145 SAGAMORE AVE
PORTSMOUTH, NH 03801
Rockingham County (603) 431-6703
RACHEL GARDNER
Counselor
1145 SAGAMORE AVE
PORTSMOUTH, NH 03801
Rockingham County (603) 431-6703
ABIGAIL GERBINO
Counselor
1145 SAGAMORE AVE
PORTSMOUTH, NH 03801
Rockingham County (603) 431-6703
JULIANA DEFEO
Counselor
1145 SAGAMORE AVE
PORTSMOUTH, NH 03801
Rockingham County (603) 431-6703
SEACOAST MENTAL HEALTH CENTER, INC.
Clinic/Center (Mental Health (Including Community Mental Health Center))
1145 SAGAMORE AVE
PORTSMOUTH, NH 03801
Rockingham County (603) 431-6703
KRISTY MICHAUD
Case Manager/Care Coordinator
1145 SAGAMORE AVE
PORTSMOUTH, NH 03801
Rockingham County (603) 431-6703
MARIA BICK LICSW
Social Worker (Clinical)
1145 SAGAMORE AVE
PORTSMOUTH, NH 03801
Rockingham County (603) 431-6703

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alissa Dillon's NPI number?

The NPI number for Alissa Dillon is 1174643381. It was assigned to this individual provider in the NPPES registry on March 30, 2007. The provider is also known as Alissa Voss.

Where is Alissa Dillon located?

Alissa Dillon practices at 1145 Sagamore Ave, Portsmouth, NH 03801. The listed phone number is (603) 431-6703.

What is Alissa Dillon's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Alissa Dillon enrolled in Medicare?

No. Alissa Dillon has opted out of Medicare through February 4, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

What insurance does Alissa Dillon accept?

Health plans from Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, Providence Health Plan and WellSense Health Plan list Alissa Dillon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Alissa Dillon was last updated on November 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.