Waltham Behavioral Health LLC
NPI 1427453000 · Adult Psychiatric/Mental Health Registered Nurse · Waltham, MA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Waltham Behavioral Health LLC is a Adult Psychiatric/Mental Health Registered Nurse organization in Waltham, MA (NPI 1427453000).
Provider details
- NPI number
- 1427453000
- Entity type
- Organization
- Primary specialty
- Adult Psychiatric/Mental Health Registered NurseNursing Service Providers
- Organization subpart
- No
- Authorized official
- Eleftheria Tsavoussis, Owner(781) 966-0070
Specialties & taxonomies
Nursing Service Providers
- Mental Health Counselor101YM0800X
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
- Child & Adolescent Psychiatry Physician2084P0804X
Allopathic & Osteopathic Physicians
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
11 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
- 2014-10-25
- Last updated
- 2020-01-06
- Certified
- 2020-01-06
Frequently asked questions
- What is Waltham Behavioral Health LLC's NPI number?
- Waltham Behavioral Health LLC's National Provider Identifier (NPI) is 1427453000, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Waltham Behavioral Health LLC?
- Waltham Behavioral Health LLC is classified in the NPPES registry as Adult Psychiatric/Mental Health Registered Nurse (Nursing Service Providers).
- Where is Waltham Behavioral Health LLC located?
- Waltham Behavioral Health LLC's practice location on file with NPPES is 210 Bear Hill Rd, Waltham, MA 02451-1025.
- What is Waltham Behavioral Health LLC's phone number?
- The practice phone number listed in the NPPES registry for Waltham Behavioral Health LLC is (781) 966-0070.
- Does Waltham Behavioral Health LLC accept Medicare?
- Waltham Behavioral Health LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Waltham Behavioral Health LLC?
- The authorized official listed on Waltham Behavioral Health LLC's NPPES record is Eleftheria Tsavoussis, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Waltham Behavioral Health LLC's NPI active?
- Yes — Waltham Behavioral Health LLC's NPI (1427453000) is active in the NPPES registry as of the last update on 2020-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.