Joelle Efthimiou, PHD
NPI 1013948272 · Clinical Neuropsychologist · Hampton Bays, NY
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joelle Efthimiou, PHD is a Clinical Neuropsychologist provider in Hampton Bays, NY (NPI 1013948272).
Provider details
- NPI number
- 1013948272
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 012465-1 (NY)
Specialties & taxonomies
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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
788 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy, 45 Minutes90834 | 357 | $97 |
| Psychotherapy, 45 Minutes90834 | 248 | $112 |
| Evaluation of Neuropsychological Test, Each Additional Hour96133 | 75 | $81 |
| Psychiatric Diagnostic Evaluation90791 | 46 | $159 |
| Evaluation of Neuropsychological Test, First Hour96132 | 25 | $114 |
| Psychotherapy, 30 Minutes90832 | 20 | $74 |
| Psychiatric Diagnostic Evaluation90791 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2020-08-11
- Certified
- 2020-08-11
Frequently asked questions
- What is Joelle Efthimiou's NPI number?
- Joelle Efthimiou's National Provider Identifier (NPI) is 1013948272, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joelle Efthimiou's specialty?
- Joelle Efthimiou is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is Joelle Efthimiou located?
- Joelle Efthimiou's practice location on file with NPPES is 1 Norwood Rd, Hampton Bays, NY 11946-3620.
- What is Joelle Efthimiou's phone number?
- The practice phone number listed in the NPPES registry for Joelle Efthimiou is (631) 252-2430.
- Does Joelle Efthimiou accept Medicare?
- Joelle Efthimiou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joelle Efthimiou's NPI active?
- Yes — Joelle Efthimiou's NPI (1013948272) is active in the NPPES registry as of the last update on 2020-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.