THOMAS ANDREW KOROSCIL
NPI 1588058408
Hospitalist in Dayton, OH
About Thomas Andrew Koroscil NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS ANDREW KOROSCIL (NPI 1588058408) is an individual hospitalist provider in Dayton, Ohio, licensed in Ohio (35.132209) and active in the NPI registry since March 2015. He is enrolled in Medicare PECOS, is affiliated with Kettering Health Main Campus, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 2
Other Identifiers 1
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
Thomas Andrew Koroscil 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
6Medicare enrollment records show Thomas Koroscil reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dayton, OH 45409
- Reassigned Medicare billing, Ohio enrollment
- 744 clinicians in this Medicare group
Miamisburg, OH 45342
- Reassigned Medicare billing, Ohio enrollment
- 984 clinicians in this Medicare group
Columbus, OH 43214
- Reassigned Medicare billing, Ohio enrollment
- 3,314 clinicians in this Medicare group
Milwaukee, WI 53211
- Reassigned Medicare billing, Wisconsin enrollment
- 1,343 clinicians in this Medicare group
Oshkosh, WI 54904
- Reassigned Medicare billing, Wisconsin enrollment
- 194 clinicians in this Medicare group
Neenah, WI 54956
- Reassigned Medicare billing, Wisconsin enrollment
- 444 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 5
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Kettering Health Main Campus
Acute Care Hospitals · Kettering, OHKettering Health Dayton
Acute Care Hospitals · Dayton, OHKettering Health Troy
Acute Care Hospitals · Troy, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 45409 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 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DAYTON, OH 45409
DAYTON, OH 45409
DAYTON, OH 45409
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 Thomas Koroscil's NPI number?
The NPI number for Thomas Koroscil is 1588058408. It was assigned to this individual provider in the NPPES registry on March 28, 2015.
Where is Thomas Koroscil located?
Thomas Koroscil practices at 128 E Apple St 2nd Floor, Dayton, OH 45409. The listed phone number is (937) 208-2004.
What is Thomas Koroscil's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Thomas Koroscil enrolled in Medicare?
Yes. Thomas Koroscil 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 Thomas Koroscil's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Koroscil reassigns Medicare benefits to 6 organizations: Mvhe Inc (Dayton, OH), Kettering Independent Medical Group Inc (Miamisburg, OH), Ohiohealth Corporation (Columbus, OH), Ascension Medical Group-Southeast Wisconsin Inc (Milwaukee, WI), Ascension NE Wisconsin, Inc (Oshkosh, WI) and 1 more organization, 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 Thomas Koroscil's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Koroscil accept?
Health plans from Anthem Blue Cross and Blue Shield, CareSource, Molina Healthcare and Oscar Health Insurance list Thomas Koroscil 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 Thomas Koroscil affiliated with any hospitals?
According to CMS data, Thomas Koroscil is affiliated with Kettering Health Main Campus, Kettering Health Dayton and Kettering Health Troy.
When was this NPI record last updated?
The NPPES record for Thomas Koroscil was last updated on May 5, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.