JUSTIN TIMOTHY GASPER
NPI 1366946063
Internal Medicine in New York, NY
About Justin Timothy Gasper NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JUSTIN TIMOTHY GASPER (NPI 1366946063) is an individual internal medicine provider in New York, New York, licensed in New York (312943) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Beth Israel, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Justin Timothy Gasper is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Justin Gasper reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10019
- Reassigned Medicare billing, New York enrollment
- 769 clinicians in this Medicare group
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
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Sinai Beth Israel
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10003 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Justin Gasper's NPI number?
The NPI number for Justin Gasper is 1366946063. It was assigned to this individual provider in the NPPES registry on March 19, 2018.
Where is Justin Gasper located?
Justin Gasper practices at 10 Union Sq E, New York, NY 10003. The listed phone number is (212) 844-8100.
What is Justin Gasper's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Justin Gasper enrolled in Medicare?
Yes. Justin Gasper is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Justin Gasper's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Justin Gasper reassigns Medicare benefits to Icahn School Of Medicine At Mount Sinai (New York, NY). The 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 Justin Gasper's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Justin Gasper affiliated with any hospitals?
According to CMS data, Justin Gasper is affiliated with Mount Sinai Beth Israel.
When was this NPI record last updated?
The NPPES record for Justin Gasper was last updated on April 20, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Justin Timothy Gasper · NPI 1366946063
Internal Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 19, 2018.
## Identity
- **NPI:** 1366946063 (Entity type: Individual)
- **Enumerated:** March 19, 2018
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 312943 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 10 UNION SQ E, New York, NY 10003-3314
- **Phone:** (212) 844-8100 · **Fax:** (212) 844-8152
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Icahn School Of Medicine At Mount Sinai (NPI 1124550280, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Washington School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** April 20, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1366946063) · Data from the CMS NPPES public registry.