JOHN REILLY MD
NPI 1881640134
Internal Medicine - Interventional Cardiology in Southampton, NY
About John Reilly Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN REILLY MD (NPI 1881640134) is an individual interventional cardiology provider in Southampton, New York, licensed in New York (198597) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Suny/stony Brook University Hospital, and is a graduate of Columbia University College Of Physicians And Surgeons (1993).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 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
John Reilly Md 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 John Reilly reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Stony Brook, NY 11794
- Reassigned Medicare billing, New York enrollment
- 177 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 20
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.
Suny/Stony Brook University Hospital
Acute Care Hospitals · Stony Brook, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11968 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.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SOUTHAMPTON, NY 11968
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 John Reilly's NPI number?
The NPI number for John Reilly is 1881640134. It was assigned to this individual provider in the NPPES registry on May 26, 2006.
Where is John Reilly located?
John Reilly practices at 676 County Road 39A, Southampton, NY 11968. The listed phone number is (631) 444-0058.
What is John Reilly's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.
Is John Reilly enrolled in Medicare?
Yes. John Reilly 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 John Reilly's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Reilly reassigns Medicare benefits to Stony Brook Internists, University Faculty Practice Corporation (Stony Brook, 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 John Reilly's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Reilly affiliated with any hospitals?
According to CMS data, John Reilly is affiliated with Suny/Stony Brook University Hospital.
When was this NPI record last updated?
The NPPES record for John Reilly was last updated on September 27, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# John Reilly, MD · NPI 1881640134
Interventional Cardiology physician in Southampton, New York. Individual provider, active in the CMS NPPES registry since May 26, 2006.
## Identity
- **NPI:** 1881640134 (Entity type: Individual)
- **Enumerated:** May 26, 2006
- **Primary specialty:** Internal Medicine - Interventional Cardiology · taxonomy 207RI0011X
- **State license:** 198597 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 676 COUNTY ROAD 39A, Southampton, NY 11968-5241
- **Phone:** (631) 444-0058
## 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:** Stony Brook Internists, University Faculty Practice Corporation (NPI 1104865229, Stony Brook, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Columbia University College Of Physicians And Surgeons, class of 1993
## Record status
- **NPPES last updated:** September 27, 2018
- **Other identifiers:** Medicaid 1131938 (LA); Medicaid 00126429 (MS)
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Source: [NPI Profile](https://npiprofile.com/npi/1881640134) · Data from the CMS NPPES public registry.