STEVEN ISSLEY MD
NPI 1215925029
Emergency Medicine in New York, NY
About Steven Issley Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEVEN ISSLEY MD (NPI 1215925029) is an individual emergency medicine provider in New York, New York, licensed in New Jersey (258064) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Montefiore Medical Center, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Steven Issley Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
9Medicare enrollment records show Steven Issley reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10025
- Reassigned Medicare billing, New York enrollment
- 5,251 clinicians in this Medicare group
Brooklyn, NY 11213
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Interfaith Emergency Medicine PC
- 145 clinicians in this Medicare group
Livingston, NJ 07039
- Reassigned Medicare billing, New Jersey enrollment
- 1,913 clinicians in this Medicare group
Somerset, NJ 08873
- Reassigned Medicare billing, New Jersey enrollment
- 1,557 clinicians in this Medicare group
Poughkeepsie, NY 12601
- Reassigned Medicare billing, New York enrollment
- 201 clinicians in this Medicare group
Newark, NY 14513
- Reassigned Medicare billing, New York enrollment
- 679 clinicians in this Medicare group
Sodus, NY 14551
- Reassigned Medicare billing, New York enrollment
- 2,285 clinicians in this Medicare group
Rochester, NY 14617
- Reassigned Medicare billing, New York enrollment
- 1,442 clinicians in this Medicare group
Boynton Beach, FL 33426
- Reassigned Medicare billing, New York enrollment
- 7,712 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Montefiore Medical Center
Acute Care Hospitals · Bronx, NYJacobi Medical Center
Acute Care Hospitals · Bronx, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10016 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
NEW YORK, NY 10016
NEW YORK, NY 10016
NEW YORK, NY 10016
NEW YORK, NY 10016
NEW YORK, NY 10016
NEW YORK, NY 10016
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 Steven Issley's NPI number?
The NPI number for Steven Issley is 1215925029. It was assigned to this individual provider in the NPPES registry on October 6, 2005.
Where is Steven Issley located?
Steven Issley practices at 550 1st Ave, New York, NY 10016. The listed phone number is (212) 263-3293.
What is Steven Issley's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Steven Issley enrolled in Medicare?
Yes. Steven Issley is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Steven Issley's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Issley reassigns Medicare benefits to 9 organizations: Montefiore Medical Center (New York, NY), Interfaith Emergency Medicine, P.C. (Brooklyn, NY), Rwjbh Observation Associates LLC (Livingston, NJ), Rwjbh Emergency Medicine Associates, LLC (Somerset, NJ), Emergency Physician Services Of New York, P.C. (Poughkeepsie, NY) and 4 more organizations, listed in the Medicare section above. Each 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 Steven Issley's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Steven Issley affiliated with any hospitals?
According to CMS data, Steven Issley is affiliated with Montefiore Medical Center and Jacobi Medical Center.
When was this NPI record last updated?
The NPPES record for Steven Issley was last updated on September 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Steven Issley, MD · NPI 1215925029
Emergency Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since October 6, 2005.
## Identity
- **NPI:** 1215925029 (Entity type: Individual)
- **Enumerated:** October 6, 2005
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 258064 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 550 1ST AVE, New York, NY 10016-6402
- **Phone:** (212) 263-3293
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Montefiore Medical Center (NPI 1760288278, New York, NY); Interfaith Emergency Medicine, P.C. (NPI 1457643785, Brooklyn, NY); Rwjbh Observation Associates LLC (NPI 1760095806, Livingston, NJ); Rwjbh Emergency Medicine Associates, LLC (NPI 1912510041, Somerset, NJ); Emergency Physician Services Of New York, P.C. (NPI 1093759847, Poughkeepsie, NY); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1997
## Record status
- **NPPES last updated:** September 26, 2024
- **Other identifiers:** Medicaid 02738434 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1215925029) · Data from the CMS NPPES public registry.