IndividualActive
Ethan Seidman, PH.D.
NPI 1518027564 · Clinical Psychologist · Cambridge, MA
Ethan Seidman, PH.D. is a Clinical Psychologist provider in Cambridge, MA (NPI 1518027564).
Provider details
- NPI number
- 1518027564
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 8218 (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
875 Massachusetts Ave
Suite 61
Cambridge, MA 02139-3067
Phone: (617) 388-7920
Fax: (952) 487-2740
Street-level locationGet directions
Mailing address
875 Massachusetts Ave
Cambridge, MA 02139-3067
Registry dates
- Enumerated
- 2006-12-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ethan Seidman's NPI number?
- Ethan Seidman's National Provider Identifier (NPI) is 1518027564, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ethan Seidman's specialty?
- Ethan Seidman is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Ethan Seidman located?
- Ethan Seidman's practice location on file with NPPES is 875 Massachusetts Ave, Cambridge, MA 02139-3067.
- What is Ethan Seidman's phone number?
- The practice phone number listed in the NPPES registry for Ethan Seidman is (617) 388-7920.
- Is Ethan Seidman's NPI active?
- Yes — Ethan Seidman's NPI (1518027564) 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.