What is Marissa Dennis's NPI number?

Marissa Dennis's National Provider Identifier (NPI) is 1841999067, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marissa Dennis's specialty?

Marissa Dennis is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).

Where is Marissa Dennis located?

Marissa Dennis's practice location on file with NPPES is 202 W Springfield St Apt 2, Boston, MA 02118-3440.

What is Marissa Dennis's phone number?

The practice phone number listed in the NPPES registry for Marissa Dennis is (802) 760-7673.

Is Marissa Dennis's NPI active?

Yes — Marissa Dennis's NPI (1841999067) is active in the NPPES registry as of the last update on 2025-05-30.

IndividualActive

Marissa Dennis, MA

NPI 1841999067 · Psychologist · Boston, MA

Marissa Dennis, MA is a Psychologist provider in Boston, MA (NPI 1841999067).

Provider details

NPI number: 1841999067
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: MA
Sex: Female
Sole proprietor: Yes

Specialties & taxonomies

PsychologistPrimary103T00000X
Behavioral Health & Social Service Providers

Profile Score

Established profile(52/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
3 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

202 W Springfield St Apt 2

Boston, MA 02118-3440

Phone: (802) 760-7673

Street-level locationGet directions

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Mailing address