Middlesex Mental Health, LLC
NPI 1265056527 · Psychiatric/Mental Health Nurse Practitioner · Belmont, MA
Middlesex Mental Health, LLC is a Psychiatric/Mental Health Nurse Practitioner organization in Belmont, MA (NPI 1265056527).
Provider details
- NPI number
- 1265056527
- Entity type
- Organization
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Organization subpart
- No
- Authorized official
- Elena Mascarenhas, Owner/Psychiatric NP(781) 222-3585
Specialties & taxonomies
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
6 yrs in NPPES registry
- Profile completeness38% of score
100% 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
Mailing address
Registry dates
- Enumerated
- 2020-06-02
- Last updated
- 2020-07-31
- Certified
- 2020-07-31
Frequently asked questions
- What is Middlesex Mental Health, LLC's NPI number?
- Middlesex Mental Health, LLC's National Provider Identifier (NPI) is 1265056527, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Middlesex Mental Health, LLC?
- Middlesex Mental Health, LLC is classified in the NPPES registry as Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Middlesex Mental Health, LLC located?
- Middlesex Mental Health, LLC's practice location on file with NPPES is 9 Alexander Ave, Belmont, MA 02478-4802.
- What is Middlesex Mental Health, LLC's phone number?
- The practice phone number listed in the NPPES registry for Middlesex Mental Health, LLC is (781) 222-3548.
- Who is the authorized official for Middlesex Mental Health, LLC?
- The authorized official listed on Middlesex Mental Health, LLC's NPPES record is Elena Mascarenhas, Owner/Psychiatric NP. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Middlesex Mental Health, LLC's NPI active?
- Yes — Middlesex Mental Health, LLC's NPI (1265056527) is active in the NPPES registry as of the last update on 2020-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.