John Mesko, MD
John Mesko, MD is an Adult Reconstructive Orthopaedic Surgery Physician in Lansing, MI, registered under NPI 1043200306.
Getting there
The practice address on file is 2815 S PENNSYLVANIA AVE SUITE 204, Lansing, MI 48910. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| JM056304 | MI | Adult Reconstructive Orthopaedic Surgery… primary |
This provider holds licence JM056304 issued in MI. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Orthopedic Surgery
- PAC ID
- 4880652700
Medicare enrolment is recorded as approved under the provider type Practitioner - Orthopedic Surgery. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Adult Reconstructive Orthopaedic Surgery covers
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, adult reconstructive orthopaedic surgeons deal with reconstructive procedures such as joint arthroplasty (i.e., hip and knee), osteotomy, arthroscopy, soft-tissue reconstruction, and a variety of other adult reconstructive surgical procedures. NUCC Health Care Provider Taxonomy, code 207XS0114X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1043200306 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 26, 2005 |
| Last updated | Mar 7, 2023 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
2815 S PENNSYLVANIA AVE SUITE 204 Lansing, MI 48910 (517) 267-0200 Fax (517) 267-1877 |
| Other identifiers |
4954152
(MI) JM056304 · LICENSE 200000006522 · PHP (MI) P00366506 · RAILROAD MEDICARE (MI) 2003313211 · BLUES (MI) P54271 · BCN 4642835 · AETNA |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 4 | 3 | 2 | 0 | 0 | 3 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 8 | 3 | 4 | 0 | 0 | 3 | 0 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.