John Weston Siebert, MD
John Weston Siebert is a Plastic Surgery Physician provider (Plastic Surgery) practicing in Madison, WI, registered in the NPPES registry with NPI 1063594521 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1063594521 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John Weston Siebert |
| Credential | MD |
| Sex | Male |
| Practice address | 821 MAGDELINE DR, Madison, WI, 53704 |
| Phone | 9177547321 |
| Enumeration date | 2006-10-20 |
| Last updated in NPPES | 2025-12-26 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208200000X | Plastic Surgery Physician | Primary | 50002 | WI |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: John Siebert, MD NPI: 1063594521 Taxonomy: 208200000X (Plastic Surgery Physician) Address: 821 MAGDELINE DR, Madison, WI, 53704
Verify this record
Cross-check NPI 1063594521 against the authoritative CMS record: view John Weston Siebert on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
Is this the official NPI registry?
What specialty is John Siebert?
Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2025-12-26.