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Edit this profileAt a glance
- 550 S Jackson St, Louisville, KY 40202
About Dr. Ahn
Based in Louisville, KY, Nicholas U. Ahn, MD is listed in the NPI registry under orthopedic surgery. Nicholas graduated from Harvard Medical School in 1996. Nicholas is also listed as specializing in orthopaedic surgery. According to Medicare claims data, Nicholas cared for 67 Medicare patients across 77 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, telephone medical discussion with physician, 21-30 minutes, and initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes. NPI 1356369482 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (502) 588-4521
- Email not available
Practice Locations
550 S JACKSON ST
Louisville, KY 40202
Conditions Commonly Evaluated or Treated
Within Orthopedic Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Elbow, hand, and wrist
Foot and ankle
Hip
Shoulder
Sports and soft tissue
Trauma and bone
Foot & Ankle
Spine
Procedures & services
Most searched procedures
Evaluation and nonsurgical
Arthroscopy
Foot & Ankle
Foot and ankle
Hand & Wrist
Hand and upper extremity
Injections & Non-Surgical
Injections & pain relief
Joint replacement
- Partial knee replacement
- Reverse shoulder replacement
- Revision joint replacement
- Shoulder replacement
Knee
Shoulder surgery
Trauma & Fractures
Trauma and fixation
Procedures Most Often Billed to Medicare
77 services · 67 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
28 | Less often than most peers in Orthopedic Surgery |
| Telephone medical discussion with physician, 21-30 minutes | Office visit | 99443 |
18 | As often as other peers in Orthopedic Surgery |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
16 | As often as other peers in Orthopedic Surgery |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
15 | Less often than most peers in Orthopedic Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other orthopedic surgeons in Louisville 8
Same specialty, same city.
Trained at Harvard Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1996 at Harvard Medical School 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Ahn?
Dr. Ahn is an orthopedic surgeon in Louisville, KY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopedic Surgery”.
NPI registry
What is Dr. Ahn's address?
Dr. Ahn is listed at 550 S Jackson St, Louisville, KY 40202. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Ahn?
The number on file is (502) 588-4521. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Ahn's NPI number?
Dr. Ahn's National Provider Identifier is 1356369482. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Ahn train?
Dr. Ahn attended Harvard Medical School, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Ahn been practicing?
Dr. Ahn has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Ahn perform?
According to Medicare billing data, Dr. Ahn the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Ahn confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ahn. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.