OrganizationActive
B-Xii Waltham LLC
NPI 1013032861 · Assisted Living Facility · Waltham, MA
B-Xii Waltham LLC is a Assisted Living Facility organization in Waltham, MA (NPI 1013032861).
Provider details
- NPI number
- 1013032861
- Entity type
- Organization
- Primary specialty
- Assisted Living FacilityNursing & Custodial Care Facilities
- Organization subpart
- No
- Authorized official
- Gayle Crenshaw, Senior Paralegal(781) 489-7563
Specialties & taxonomies
Nursing & Custodial Care Facilities
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
126 Smith St
Waltham, MA 02451-1300
Phone: (781) 466-9912
Fax: (781) 466-9914
Street-level locationGet directions
Mailing address
40 William St
Wellesley, MA 02481-3999
Other names (DBA / former)
- Doing business as
- Benchmark Senior Living at Waltham Crossings
Registry dates
- Enumerated
- 2007-03-20
- Last updated
- 2015-01-21
Frequently asked questions
- What is B-Xii Waltham LLC's NPI number?
- B-Xii Waltham LLC's National Provider Identifier (NPI) is 1013032861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is B-Xii Waltham LLC?
- B-Xii Waltham LLC is classified in the NPPES registry as Assisted Living Facility (Nursing & Custodial Care Facilities).
- Where is B-Xii Waltham LLC located?
- B-Xii Waltham LLC's practice location on file with NPPES is 126 Smith St, Waltham, MA 02451-1300.
- What is B-Xii Waltham LLC's phone number?
- The practice phone number listed in the NPPES registry for B-Xii Waltham LLC is (781) 466-9912.
- Who is the authorized official for B-Xii Waltham LLC?
- The authorized official listed on B-Xii Waltham LLC's NPPES record is Gayle Crenshaw, Senior Paralegal. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is B-Xii Waltham LLC's NPI active?
- Yes — B-Xii Waltham LLC's NPI (1013032861) is active in the NPPES registry as of the last update on 2015-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.