John Weltmer, M.D.
John Weltmer, M.D. is an Orthopaedic Surgery Physician in Saint Louis, MO, registered under NPI 1720038052.
Getting there
The practice address on file is 11125 DUNN RD STE 301, Saint Louis, MO 63136. 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 |
|---|---|---|
| R6J60 | MO | Orthopaedic Surgery Physician primary |
This provider holds licence R6J60 issued in MO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Orthopaedic Surgery covers
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system. NUCC Health Care Provider Taxonomy, code 207X00000X
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 | 1720038052 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 10, 2006 |
| Last updated | Mar 31, 2021 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
11125 DUNN RD STE 301 Saint Louis, MO 63136 (314) 953-8250 Fax (314) 953-8255 |
| Mailing address |
670 MASON RIDGE CENTER DR STE 300 Saint Louis, MO 63141 |
| Other identifiers |
3092656004
· CIGNA (MO) 200020695 · RAILROAD MEDICARE (MO) 27785 · BLUE CROSS BLUE SHIELD (MO) 42517 · GROUP HEALTH PLAN (MO) 0900069 · UNITED HEALTHCARE (MO) 4082947 · AETNA (MO) 101338 · HEALTHLINK (MO) |
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 | 7 | 2 | 0 | 0 | 3 | 8 | 0 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 4 | 0 | 0 | 3 | 7 | 0 | 1 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.