DR. JOSHUA L REIN DO
NPI 1942576228
Internal Medicine - Nephrology in New York, NY
About Dr. Joshua L Rein Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOSHUA L REIN DO (NPI 1942576228) is an individual nephrology provider in New York, New York, licensed in New York (278510) and active in the NPI registry since March 2012. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Dr. Joshua L Rein Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Joshua Rein reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 65 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.
Physician 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 Joshua Rein's NPI number?
The NPI number for Joshua Rein is 1942576228. It was assigned to this individual provider in the NPPES registry on March 30, 2012.
Where is Joshua Rein located?
Joshua Rein practices at 10 Union Sq E, New York, NY 10003. The listed phone number is (212) 420-4070.
What is Joshua Rein's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Joshua Rein enrolled in Medicare?
Yes. Joshua Rein is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Joshua Rein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joshua Rein 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 Joshua Rein'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 Joshua Rein was last updated on October 27, 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.
# Dr. Joshua L Rein, DO · NPI 1942576228
Nephrology physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 30, 2012.
## Identity
- **NPI:** 1942576228 (Entity type: Individual)
- **Enumerated:** March 30, 2012
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 278510 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 10 UNION SQ E, New York, NY 10003-3314
- **Phone:** (212) 420-4070
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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 1730440777, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 27, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1942576228) · Data from the CMS NPPES public registry.