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Ellsworth Fersch
NPI 1871089227 · Clinical Psychologist · Cambridge, MA
Ellsworth Fersch is a Clinical Psychologist provider in Cambridge, MA (NPI 1871089227).
Provider details
- NPI number
- 1871089227
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1027 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(68/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
70 Richdale Ave Apt 2
Cambridge, MA 02140-2640
Phone: (978) 369-8412
Street-level locationGet directions
Mailing address
70 Richdale Ave Apt 2
Cambridge, MA 02140-2640
Registry dates
- Enumerated
- 2018-07-09
- Last updated
- 2018-07-09
Frequently asked questions
- What is Ellsworth Fersch's NPI number?
- Ellsworth Fersch's National Provider Identifier (NPI) is 1871089227, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellsworth Fersch's specialty?
- Ellsworth Fersch is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Ellsworth Fersch located?
- Ellsworth Fersch's practice location on file with NPPES is 70 Richdale Ave Apt 2, Cambridge, MA 02140-2640.
- What is Ellsworth Fersch's phone number?
- The practice phone number listed in the NPPES registry for Ellsworth Fersch is (978) 369-8412.
- Is Ellsworth Fersch's NPI active?
- Yes — Ellsworth Fersch's NPI (1871089227) is active in the NPPES registry as of the last update on 2018-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.