DR. SEAN P TIERNEY M.D.
NPI 1457315624
Internal Medicine - Clinical Cardiac Electrophysiology in Merrionette Park, IL
About Dr. Sean P Tierney M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SEAN P TIERNEY M.D. (NPI 1457315624) is an individual clinical cardiac electrophysiology provider in Merrionette Park, Illinois, licensed in Illinois (036096266) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Presence Saint Joseph Medical Center, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 4
Other Identifiers 10
Accepted Insurance
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. Sean P Tierney 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 Reassignments
3Medicare enrollment records show Sean Tierney reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60638
- Reassigned Medicare billing, Illinois enrollment
- 381 clinicians in this Medicare group
Palos Park, IL 60464
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Heart Care Centers Of Illinois, S.C.
- 36 clinicians in this Medicare group
Berwyn, IL 60402
- Reassigned Medicare billing, Illinois enrollment
- 86 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 37
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Presence Saint Joseph Medical Center
Acute Care Hospitals · Joliet, ILPalos Community Hospital
Acute Care Hospitals · Palos Heights, ILAdventist Hinsdale Hospital
Acute Care Hospitals · Hinsdale, ILAdvocate Christ Hospital & Medical Center
Acute Care Hospitals · Oak Lawn, ILSilver Cross Hospital And Medical Centers
Acute Care Hospitals · New Lenox, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60803 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MERRIONETTE PARK, IL 60803
MERRIONETTE PARK, IL 60803
MERRIONETTE PARK, IL 60803
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 Sean Tierney's NPI number?
The NPI number for Sean Tierney is 1457315624. It was assigned to this individual provider in the NPPES registry on April 14, 2006.
Where is Sean Tierney located?
Sean Tierney practices at 11560 S Kedzie Ave Ste 100, Merrionette Park, IL 60803. The listed phone number is (708) 824-1114.
What is Sean Tierney's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.
Is Sean Tierney enrolled in Medicare?
Yes. Sean Tierney 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 organizations bill Medicare for Sean Tierney's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sean Tierney reassigns Medicare benefits to 3 organizations: Adventist Health Partners, Inc (Chicago, IL), Heart Care Centers Of Illinois, Sc (Palos Park, IL) and Gottlieb Community Health Services Corporation (Berwyn, IL). 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 Sean Tierney's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sean Tierney accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Sean Tierney as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Sean Tierney affiliated with any hospitals?
According to CMS data, Sean Tierney is affiliated with Presence Saint Joseph Medical Center, Palos Community Hospital, Adventist Hinsdale Hospital, Advocate Christ Hospital & Medical Center and Silver Cross Hospital And Medical Centers.
When was this NPI record last updated?
The NPPES record for Sean Tierney was last updated on December 15, 2021. 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.