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DR. JOELLE EFTHIMIOU PHD
NPI 1013948272
Clinical Neuropsychologist in Hampton Bays, NY

Active since July 06, 2006PECOS Enrolled
1 NORWOOD RD, HAMPTON BAYS, NY 11946(631) 252-2430 Get Directions Write a Review

NPPES record last updated: August 11, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Joelle Efthimiou Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOELLE EFTHIMIOU PHD (NPI 1013948272) is an individual clinical neuropsychologist in Hampton Bays, New York, licensed in New York (012465) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013948272
Entity TypeIndividualFemale
Primary Taxonomy103G00000X
Provider Legal NameDR. JOELLE EFTHIMIOUCredential: PHD
Location Address1 NORWOOD RDHampton Bays, NY 11946-3620
Mailing Address1 Norwood RdHampton Bays, NY 11946-3620 · (631) 252-2430
Phone(631) 252-2430
Sole ProprietorYes
Enumeration DateJuly 6, 2006
Last NPPES UpdateAugust 11, 2020
NPPES CertifiedAugust 11, 2020
✔ NPI 1013948272 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers
Taxonomy Code103G00000X
License✔ Licensed in NY · 012465
Definition
A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.
Also ListedPsychologist · CounselingTaxonomy 103TC1900X · License 012465-1 (NY)
1 NORWOOD RD, Hampton Bays, NY 11946
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Joelle Efthimiou Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Joelle Efthimiou reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hospitalist Healthcare Services PLLC
65 mi
Internal Medicine
3 BARKER AVE
White Plains, NY 10601
  • Reassigned Medicare billing, New York enrollment
  • 167 clinicians in this Medicare group
NPI 1275962011 (914) 949-1199
New York General Medical Services PC
74 mi
Hospitalist
1060 AMSTERDAM AVE
New York, NY 10025
  • Reassigned Medicare billing, New York enrollment
  • 179 clinicians in this Medicare group
NPI 1700315538 (865) 693-1000
Cs Pacs 3 Northeast, LLC
277 mi
Hospitalist
30 NORTH PL
Frederick, MD 21701
  • Reassigned Medicare billing, New York enrollment
  • 158 clinicians in this Medicare group
NPI 1093598898 (301) 695-6618
Nv Pacs 2 LLC
2,318 mi
Hospitalist
10550 PARK RUN DR
Las Vegas, NV 89144
  • Reassigned Medicare billing, New York enrollment
  • 178 clinicians in this Medicare group
NPI 1427534809 (865) 693-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 45 minutes 90834
Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.
357 services65 patients
Psychotherapy, 45 minutes 90834
Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.
248 services26 patients
Evaluation of neuropsychological test, each additional hour 96133
This service involves further evaluation of your neuropsychological test results beyond the initial hour. It helps to understand your cognitive functioning better, focusing on areas like memory, attention, and problem-solving skills.
75 services23 patients
Psychiatric diagnostic evaluation 90791
A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.
46 services46 patients
Evaluation of neuropsychological test, first hour 96132
An evaluation of neuropsychological tests is a process to assess your brain's function. It involves tasks designed to measure cognitive abilities such as memory, attention, problem-solving, and language skills. The first hour involves initial testing and observation.
25 services23 patients
Psychotherapy, 30 minutes 90832
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 30-minute session, the therapist helps you explore feelings, thoughts, and behaviors to better understand yourself and manage life's challenges.
20 services13 patients

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. FRANCIS T. TWIGGS PH.D.
Psychologist (Clinical)
1 NORWOOD RD
HAMPTON BAYS, NY 11946
Suffolk County (631) 252-3597

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Joelle Efthimiou's NPI number?

The NPI number for Joelle Efthimiou is 1013948272. It was assigned to this individual provider in the NPPES registry on July 6, 2006.

Where is Joelle Efthimiou located?

Joelle Efthimiou practices at 1 Norwood Rd, Hampton Bays, NY 11946. The listed phone number is (631) 252-2430.

What is Joelle Efthimiou's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

Is Joelle Efthimiou enrolled in Medicare?

Yes. Joelle Efthimiou is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Joelle Efthimiou's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joelle Efthimiou reassigns Medicare benefits to 4 organizations: Hospitalist Healthcare Services PLLC (White Plains, NY), New York General Medical Services PC (New York, NY), Cs Pacs 3 Northeast, LLC (Frederick, MD) and Nv Pacs 2 LLC (Las Vegas, NV). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joelle Efthimiou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Joelle Efthimiou was last updated on August 11, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.