John H Siegner, D.O.
John H Siegner is a General Practice Physician provider (General Practice) practicing in Caro, MI, registered in the NPPES registry with NPI 1588741045 since 2006. The credential DO stands for Doctor of Osteopathic Medicine.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1588741045 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John H Siegner |
| Credential | D.O. |
| Sex | Male |
| Practice address | Caro, MI, 48723 |
| Phone | 9896734126 |
| Fax | 9896734502 |
| Enumeration date | 2006-11-01 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | Primary | 5101005281 | MI |
DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 4651771 | Medicaid | MI | — |
Copy-ready billing details
Provider: John Siegner, D.O. NPI: 1588741045 Taxonomy: 208D00000X (General Practice Physician) Address: Caro, MI, 48723
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1265527428 | Richard Touma | Individual | General Practice Physician | Caro, MI |
| 1356727374 | Teresa Mcdonald | Individual | Family Nurse Practitioner | Caro, MI |
Verify this record
Cross-check NPI 1588741045 against the authoritative CMS record: view John H Siegner 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.