Quick answers
- Which hospitals does Aaron T. Koster work at?
- Medicare's official clinician data lists Aaron T. Koster at 1 hospital: Norton Hospitals, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Aaron T. Koster see patients?
- Medicare's clinician data lists 3 practice locations, including Louisville, KY. Call before your visit to confirm the address.
- What is Aaron T. Koster's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Aaron T. Koster accept Medicare assignment?
- Yes. Medicare's clinician data says Aaron T. Koster accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Aaron T. Koster?
- (502) 629-8000, as listed in official Medicare / NPI Registry data.
- What is Aaron T. Koster's NPI number?
- 1568923993. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Aaron T. Koster works
Medicare's Facility Affiliation Data lists Aaron T. Koster at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Norton Hospitals, IncLouisville, KY · Acute Care Hospital · CCN 180088
Practice locations
Addresses where Aaron T. Koster is enrolled with Medicare (CMS data updated 2026-10-02).
- 200 E Chestnut StLouisville, KY 40202 (502) 629‑8000
- 4001 Dutchmans LnLouisville, KY 40207 (502) 629‑2880
- 4960 Norton Healthcare BlvdLouisville, KY 40241 (502) 446‑8000
Group practices
Medicare enrollment lists Aaron T. Koster as a member of these groups (CMS data updated 2026-10-02).
- Professional Anesthesia Services of Kentucky PLLC352 clinicians in the group
- Universal Anesthesia Services LLC49 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Louisville
Clinicians with the same Medicare primary specialty in Louisville, KY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568923993 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians