IndividualActive
Katherine Ellin, PH.D.
NPI 1952456709 · Clinical Psychologist · Cambridge, MA
Katherine Ellin, PH.D. is a Clinical Psychologist provider in Cambridge, MA (NPI 1952456709).
Provider details
- NPI number
- 1952456709
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 7132 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
763 Massachusetts Ave
Cambridge, MA 02139-3329
Phone: (617) 864-3667
Street-level locationGet directions
Mailing address
763 Massachusetts Ave
Cambridge, MA 02139-3329
Registry dates
- Enumerated
- 2007-01-24
- Last updated
- 2007-07-08
Frequently asked questions
- What is Katherine Ellin's NPI number?
- Katherine Ellin's National Provider Identifier (NPI) is 1952456709, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Ellin's specialty?
- Katherine Ellin is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Katherine Ellin located?
- Katherine Ellin's practice location on file with NPPES is 763 Massachusetts Ave, Cambridge, MA 02139-3329.
- What is Katherine Ellin's phone number?
- The practice phone number listed in the NPPES registry for Katherine Ellin is (617) 864-3667.
- Is Katherine Ellin's NPI active?
- Yes — Katherine Ellin's NPI (1952456709) 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.