IndividualActive
Rachel Siff, LICSW
NPI 1649395401 · Clinical Social Worker · Concord, MA
Rachel Siff, LICSW is a Clinical Social Worker provider in Concord, MA (NPI 1649395401).
Provider details
- NPI number
- 1649395401
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Female
- Sole proprietor
- No
- License
- 1031831 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 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
111 Old Road to 9 Acre Cor
Concord, MA 01742-4141
Phone: (978) 369-1113
Street-level locationGet directions
Mailing address
25 Linden Ave
Somerville, MA 02143-2253
Registry dates
- Enumerated
- 2007-03-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Rachel Siff's NPI number?
- Rachel Siff's National Provider Identifier (NPI) is 1649395401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachel Siff's specialty?
- Rachel Siff is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Rachel Siff located?
- Rachel Siff's practice location on file with NPPES is 111 Old Road to 9 Acre Cor, Concord, MA 01742-4141.
- What is Rachel Siff's phone number?
- The practice phone number listed in the NPPES registry for Rachel Siff is (978) 369-1113.
- Is Rachel Siff's NPI active?
- Yes — Rachel Siff's NPI (1649395401) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.