Marcel Fajnzylber, ED.D.
NPI 1821008947 · Psychologist · Brookline, MA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcel Fajnzylber, ED.D. is a Psychologist provider in Brookline, MA (NPI 1821008947).
Provider details
- NPI number
- 1821008947
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- ED.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 03502 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-08-09
- Last updated
- 2014-12-29
Frequently asked questions
- What is Marcel Fajnzylber's NPI number?
- Marcel Fajnzylber's National Provider Identifier (NPI) is 1821008947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcel Fajnzylber's specialty?
- Marcel Fajnzylber is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Marcel Fajnzylber located?
- Marcel Fajnzylber's practice location on file with NPPES is 1141 Beacon St, Brookline, MA 02446-5528.
- What is Marcel Fajnzylber's phone number?
- The practice phone number listed in the NPPES registry for Marcel Fajnzylber is (617) 277-9400.
- Does Marcel Fajnzylber accept Medicare?
- Marcel Fajnzylber is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcel Fajnzylber's NPI active?
- Yes — Marcel Fajnzylber's NPI (1821008947) is active in the NPPES registry as of the last update on 2014-12-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.