Allison Hajjar, LCSW
NPI 1962255083 · Clinical Social Worker · Waltham, MA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allison Hajjar, LCSW is a Clinical Social Worker provider in Waltham, MA (NPI 1962255083).
Provider details
- NPI number
- 1962255083
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 227145 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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
- 2024-04-09
- Last updated
- 2024-04-09
- Certified
- 2024-04-09
Frequently asked questions
- What is Allison Hajjar's NPI number?
- Allison Hajjar's National Provider Identifier (NPI) is 1962255083, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allison Hajjar's specialty?
- Allison Hajjar is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Allison Hajjar located?
- Allison Hajjar's practice location on file with NPPES is 28 Augustus Rd, Waltham, MA 02452-5705.
- What is Allison Hajjar's phone number?
- The practice phone number listed in the NPPES registry for Allison Hajjar is (978) 857-5990.
- Does Allison Hajjar accept Medicare?
- Allison Hajjar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allison Hajjar's NPI active?
- Yes — Allison Hajjar's NPI (1962255083) is active in the NPPES registry as of the last update on 2024-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.