Provider Profile
Joelle Efthimiou, PhD is a psychologist based in Hampton Bays, NY. According to Medicare claims data, Joelle cared for 212 Medicare patients across 788 services. The services billed most often include psychotherapy, 45 minutes, psychotherapy, 45 minutes, and evaluation of neuropsychological test, each additional hour.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
1 NORWOOD RD
Hampton Bays, NY 11946
Within Psychology (Unspecified) generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
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Therapy Modalities
788 services · 212 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy, 45 minutes | Treatment | 90834 |
357 | More than most peers in Psychologist |
| Psychotherapy, 45 minutes | Treatment | 90834 |
248 | More than most peers in Psychologist |
| Evaluation of neuropsychological test, each additional hour | Treatment | 96133 |
75 | As often as other peers in Psychologist |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
46 | More often than most peers in Psychologist |
| Evaluation of neuropsychological test, first hour | Treatment | 96132 |
25 | |
| Psychotherapy, 30 minutes | Treatment | 90832 |
20 | |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
17 | More often than most peers in Psychologist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Efthimiou is a psychologist in Hampton Bays, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
Dr. Efthimiou is listed at 1 Norwood Rd, Hampton Bays, NY 11946. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (631) 252-2430. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Efthimiou's National Provider Identifier is 1013948272. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Efthimiou has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
According to Medicare billing data, Dr. Efthimiou provides treatments such as psychotherapy, 45 minutes and evaluation of neuropsychological test, each additional hour. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Efthimiou. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.