DR. CLIFFORD ISSACOFF CLINICAL PSYCHOLOGIST, P.C.
NPI 1871907451
Psychologist - Clinical in East Islip, NY
About Dr. Clifford Issacoff Clinical Psychologist, P.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CLIFFORD ISSACOFF CLINICAL PSYCHOLOGIST, P.C. (NPI 1871907451) is a healthcare organization registered as a clinical in East Islip, New York and active in the NPI registry since June 2014. The organization lists Clifford Issacoff, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Clifford Issacoff Clinical Psychologist, P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Dr. Clifford Issacoff Clinical Psychologist, P.C., which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Dr. Clifford Issacoff Clinical Psychologist, P.C.'s NPI number?
The NPI number for Dr. Clifford Issacoff Clinical Psychologist, P.C. is 1871907451. It was assigned to this organization in the NPPES registry on June 11, 2014.
Where is Dr. Clifford Issacoff Clinical Psychologist, P.C. located?
Dr. Clifford Issacoff Clinical Psychologist, P.C. is located at 126 E Main St, East Islip, NY 11730. The listed phone number is (631) 277-8367.
What is Dr. Clifford Issacoff Clinical Psychologist, P.C.'s specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Dr. Clifford Issacoff Clinical Psychologist, P.C. enrolled in Medicare?
Yes. Dr. Clifford Issacoff Clinical Psychologist, P.C. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Dr. Clifford Issacoff Clinical Psychologist, P.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Psychologist) reassigns their Medicare billing to Dr. Clifford Issacoff Clinical Psychologist, P.C.. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Dr. Clifford Issacoff Clinical Psychologist, P.C. was last updated on June 11, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Dr. Clifford Issacoff Clinical Psychologist, P.c. · NPI 1871907451
Clinical organization in East Islip, New York. Organization record, active in the CMS NPPES registry since June 11, 2014.
## Identity
- **NPI:** 1871907451 (Entity type: Organization)
- **Enumerated:** June 11, 2014
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **Organization subpart:** No
- **Authorized official:** Clifford Issacoff, OWNER
## Practice location
- **Address:** 126 E MAIN ST, East Islip, NY 11730-2600
- **Phone:** (631) 277-8367
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Clinical Psychologist) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 11, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1871907451) · Data from the CMS NPPES public registry.