NICHOLAS UTCHAN AHN MD
NPI 1356369482
Orthopaedic Surgery in Louisville, KY
About Nicholas Utchan Ahn Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NICHOLAS UTCHAN AHN MD (NPI 1356369482) is an individual orthopaedic surgery provider in Louisville, Kentucky, licensed in Kentucky (58613) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Jewish Hospital & St Mary's Healthcare, and is a graduate of Harvard Medical School (1996).
NPPES Registry Identity
Specialties & Licenses
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
Nicholas Utchan Ahn 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 Reassignments
2Medicare enrollment records show Nicholas Ahn reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Louisville, KY 40202
- Reassigned Medicare billing, Kentucky enrollment
- 2,337 clinicians in this Medicare group
Cleveland, OH 44106
- Reassigned Medicare billing, Ohio enrollment
- 3,958 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 4
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Jewish Hospital & St Mary's Healthcare
Acute Care Hospitals · Louisville, KYUniversity Of Louisville Hospital
Acute Care Hospitals · Louisville, KYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 40202 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.
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.
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
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 Nicholas Ahn's NPI number?
The NPI number for Nicholas Ahn is 1356369482. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Nicholas Ahn located?
Nicholas Ahn practices at 550 S Jackson St, Louisville, KY 40202. The listed phone number is (502) 588-4521.
What is Nicholas Ahn's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Nicholas Ahn enrolled in Medicare?
Yes. Nicholas Ahn 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 Nicholas Ahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Ahn reassigns Medicare benefits to 2 organizations: University Of Louisville Physicians, Inc. (Louisville, KY) and University Hospitals Medical Group Inc (Cleveland, OH). 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 Nicholas Ahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nicholas Ahn accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan and Ambetter of Tennessee list Nicholas Ahn 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 Nicholas Ahn affiliated with any hospitals?
According to CMS data, Nicholas Ahn is affiliated with Jewish Hospital & St Mary's Healthcare and University Of Louisville Hospital.
When was this NPI record last updated?
The NPPES record for Nicholas Ahn was last updated on October 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.
# Nicholas Utchan Ahn, MD · NPI 1356369482
Orthopaedic Surgery physician in Louisville, Kentucky. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1356369482 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** 58613 (Kentucky)
- **Sole proprietor:** No
## Practice location
- **Address:** 550 S JACKSON ST, Louisville, KY 40202-1622
- **Phone:** (502) 588-4521 · **Fax:** (502) 588-9542
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Louisville Physicians, Inc. (NPI 1366722316, Louisville, KY); University Hospitals Medical Group Inc (NPI 1669499414, Cleveland, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 1996
## Record status
- **NPPES last updated:** October 5, 2023
- **Other identifiers:** Other 000000221339 (OH); Medicaid 300081605 (IN); Other P00353696 (OH); and 7 more
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Source: [NPI Profile](https://npiprofile.com/npi/1356369482) · Data from the CMS NPPES public registry.