IndividualActive
Katherine Welsh, LICSW
NPI 1891089306 · Clinical Social Worker · Boston, MA
Katherine Welsh, LICSW is a Clinical Social Worker provider in Boston, MA (NPI 1891089306).
Provider details
- NPI number
- 1891089306
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Female
- Sole proprietor
- No
- License
- 115303 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(86/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
300 Longwood Ave
Boston, MA 02115-5724
Phone: (617) 355-6000
Street-level locationGet directions
Mailing address
300 Longwood Ave
Boston, MA 02115-5724
Additional practice locations (1)
- 1601 Washington StBoston, MA 02118-1951Phone: (617) 425-2040Fax: (617) 425-2043
Registry dates
- Enumerated
- 2011-06-01
- Last updated
- 2022-07-21
Frequently asked questions
- What is Katherine Welsh's NPI number?
- Katherine Welsh's National Provider Identifier (NPI) is 1891089306, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Welsh's specialty?
- Katherine Welsh is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Katherine Welsh located?
- Katherine Welsh's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Katherine Welsh's phone number?
- The practice phone number listed in the NPPES registry for Katherine Welsh is (617) 355-6000.
- Is Katherine Welsh's NPI active?
- Yes — Katherine Welsh's NPI (1891089306) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.