Marissa Ross, PMHNP
NPI 1255913109 · Psychiatric/Mental Health Nurse Practitioner · Boston, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Ross, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Boston, MA (NPI 1255913109).
Provider details
- NPI number
- 1255913109
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 070155-23 (NH)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Mailing address
Additional practice locations (1)
- 124 Watertown St Ste 2dWatertown, MA 02472-2500Phone: (617) 916-5096
Registry dates
- Enumerated
- 2021-04-21
- Last updated
- 2024-02-26
- Certified
- 2024-02-26
Frequently asked questions
- What is Marissa Ross's NPI number?
- Marissa Ross's National Provider Identifier (NPI) is 1255913109, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Ross's specialty?
- Marissa Ross is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marissa Ross located?
- Marissa Ross's practice location on file with NPPES is 1 Emerson Pl Ste 3h, Boston, MA 02114-2252.
- What is Marissa Ross's phone number?
- The practice phone number listed in the NPPES registry for Marissa Ross is (617) 397-3951.
- Does Marissa Ross accept Medicare?
- Marissa Ross is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Ross's NPI active?
- Yes — Marissa Ross's NPI (1255913109) is active in the NPPES registry as of the last update on 2024-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.