LONG ISLAND MEDICAL SERVICES P.C.
NPI 1841443538
Internal Medicine in Syosset, NY
About Long Island Medical Services P.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LONG ISLAND MEDICAL SERVICES P.C. (NPI 1841443538) is a healthcare organization registered as an internal medicine in Syosset, New York and active in the NPI registry since October 2008. The organization lists Grigoriy Krichmar, 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)
Long Island Medical Services P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
19Medicare enrollment records show 19 clinicians reassign Medicare billing to Long Island Medical Services P.C., which bills Medicare for the services they deliver. Of these, 7 practice within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 5
Clinicians, nearest first (19)
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 Long Island Medical Services P.C.'s NPI number?
The NPI number for Long Island Medical Services P.C. is 1841443538. It was assigned to this organization in the NPPES registry on October 28, 2008.
Where is Long Island Medical Services P.C. located?
Long Island Medical Services P.C. is located at 235 Saddle Ln, Syosset, NY 11791. The listed phone number is (917) 573-5667.
What is Long Island Medical Services P.C.'s specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Long Island Medical Services P.C. enrolled in Medicare?
Yes. Long Island Medical Services P.C. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Long Island Medical Services P.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 19 clinicians in 5 Medicare specialties reassign their Medicare billing to Long Island Medical Services 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. The largest specialties are Nurse Practitioner (14), Clinical Social Worker (2) and Clinical Psychologist (1). Of these, 7 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Long Island Medical Services P.C. was last updated on November 10, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Long Island Medical Services P.c. · NPI 1841443538
Internal Medicine organization in Syosset, New York. Organization record, active in the CMS NPPES registry since October 28, 2008.
## Identity
- **NPI:** 1841443538 (Entity type: Organization)
- **Enumerated:** October 28, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Grigoriy Krichmar, OWNER
## Practice location
- **Address:** 235 SADDLE LN, Syosset, NY 11791-4428
- **Phone:** (917) 573-5667
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 19 clinicians in 5 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (14), Clinical Social Worker (2), Clinical Psychologist (1); 7 practice within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 10, 2008
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Source: [NPI Profile](https://npiprofile.com/npi/1841443538) · Data from the CMS NPPES public registry.