DR. RYAN DONALD PATTERSON M.D.
NPI 1225488497
Internal Medicine - Interventional Cardiology in Riverhead, NY
About Dr. Ryan Donald Patterson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RYAN DONALD PATTERSON M.D. (NPI 1225488497) is an individual interventional cardiology provider in Riverhead, New York, licensed in New York (319128) and active in the NPI registry since June 2016. He is enrolled in Medicare PECOS, is affiliated with Ns/lij Hs Southside Hospital, and is a graduate of Rutgers New Jersey Medical School (2016).
NPPES Registry Identity
Specialties & Licenses 3
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
Dr. Ryan Donald Patterson M.d. 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 Ryan Patterson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Riverhead, NY 11901
- Reassigned Medicare billing, New York enrollment
- 18 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 3
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ns/Lij Hs Southside Hospital
Acute Care Hospitals · Bay Shore, NYNorth Shore University Hospital
Acute Care Hospitals · Manhasset, NYPeconic Bay Medical Center
Acute Care Hospitals · Riverhead, NYSuny/Stony Brook University Hospital
Acute Care Hospitals · Stony Brook, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11901 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.
RIVERHEAD, NY 11901
RIVERHEAD, NY 11901
RIVERHEAD, NY 11901
RIVERHEAD, NY 11901
RIVERHEAD, NY 11901
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 Ryan Patterson's NPI number?
The NPI number for Ryan Patterson is 1225488497. It was assigned to this individual provider in the NPPES registry on June 17, 2016.
Where is Ryan Patterson located?
Ryan Patterson practices at 951 Roanoke Ave, Riverhead, NY 11901. The listed phone number is (731) 727-7773.
What is Ryan Patterson's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.
Is Ryan Patterson enrolled in Medicare?
Yes. Ryan Patterson 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 Ryan Patterson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Patterson reassigns Medicare benefits to Peconic Cardiology, PC (Riverhead, 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 Ryan Patterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ryan Patterson affiliated with any hospitals?
According to CMS data, Ryan Patterson is affiliated with Ns/Lij Hs Southside Hospital, North Shore University Hospital, Peconic Bay Medical Center and Suny/Stony Brook University Hospital.
When was this NPI record last updated?
The NPPES record for Ryan Patterson was last updated on September 11, 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.