MOUNT SINAI MARATHON MEDICAL
NPI 1508127531
Internal Medicine in Oceanside, NY
About Mount Sinai Marathon Medical NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MOUNT SINAI MARATHON MEDICAL (NPI 1508127531) is a healthcare organization registered as an internal medicine in Oceanside, New York and active in the NPI registry since June 2012. The organization holds a CLIA Microscopy certificate valid through March 26, 2027, maintains a secondary practice location in New York, and lists Alicia Gresham, Vp Network Operations, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Location 1
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)
Mount Sinai Marathon Medical is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
301Medicare enrollment records show 301 clinicians reassign Medicare billing to Mount Sinai Marathon Medical, which bills Medicare for the services they deliver. Of these, 64 practice at this address and 186 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 27
Nearest to this location (20)
See all 301Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate for Provider-Performed Microscopy Procedures (PPMP) 33D2111232
Mount Sinai School Of Medicine Faculty Practice Associates · New York, NYFrequently 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 Mount Sinai School Of Medicine's NPI number?
The NPI number for Mount Sinai School Of Medicine is 1508127531. It was assigned to this organization in the NPPES registry on June 6, 2012. The provider is doing business as Mount Sinai Marathon Medical.
Where is Mount Sinai School Of Medicine located?
Mount Sinai School Of Medicine is located at 1 Healthy Way, Oceanside, NY 11572. The listed phone number is (516) 632-3670.
What is Mount Sinai School Of Medicine's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mount Sinai School Of Medicine enrolled in Medicare?
Yes. Mount Sinai School Of Medicine is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Mount Sinai School Of Medicine?
According to the CMS Revalidation Reassignment List (October 2026 release), 301 clinicians in 27 Medicare specialties reassign their Medicare billing to Mount Sinai School Of Medicine. 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 Internal Medicine (45), Nurse Practitioner (45) and Family Practice (31). Of these, 64 practice at this address and 186 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Mount Sinai School Of Medicine hold a CLIA laboratory certificate?
Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 33D2111232) is associated with this NPI, valid through March 26, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Mount Sinai School Of Medicine was last updated on October 24, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Mount Sinai Marathon Medical · NPI 1508127531
Internal Medicine organization in Oceanside, New York. Organization record, active in the CMS NPPES registry since June 6, 2012.
## Identity
- **NPI:** 1508127531 (Entity type: Organization)
- **Enumerated:** June 6, 2012
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Legal business name:** Mount Sinai School Of Medicine
- **Organization subpart:** Yes (part of Mount Sinai Hospital)
- **Authorized official:** Alicia Gresham, VP NETWORK OPERATIONS
## Practice location
- **Address:** 1 HEALTHY WAY, Oceanside, NY 11572-1551
- **Phone:** (516) 632-3670 · **Fax:** (516) 336-5309
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 301 clinicians in 27 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (45), Nurse Practitioner (45), Family Practice (31); 64 practice at this address and 186 within 10 miles; [full list](https://npiprofile.com/npi/1508127531/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 24, 2018
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1508127531) · Data from the CMS NPPES public registry.