Stephen Brian Siefferman, DDS
Stephen Brian Siefferman is a General Practice Dentistry provider (Dentist) practicing in Palos Heights, IL, registered in the NPPES registry with NPI 1780755819 since 2006. The credential DDS stands for Doctor of Dental Surgery. Practices at Robert C Clay, Jr, DDS, Ltd (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1780755819 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Stephen Brian Siefferman |
| Credential | DDS |
| Sex | Male |
| Practice address | Palos Heights, IL, 60463 |
| Phone | 7086710887 |
| Fax | 7086710889 |
| Enumeration date | 2006-11-11 |
| 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 |
|---|---|---|---|---|
| 1223G0001X | General Practice Dentistry | Primary | — | IL |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: Stephen Siefferman, DDS NPI: 1780755819 Taxonomy: 1223G0001X (General Practice Dentistry) Address: Palos Heights, IL, 60463
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1134151954 | Robert Clay | Individual | General Practice Dentistry | Palos Heights, IL |
| 1346466851 | Robert C Clay, Jr, DDS, Ltd | Organization | Dental Clinic/Center | Palos Heights, IL |
Verify this record
Cross-check NPI 1780755819 against the authoritative CMS record: view Stephen Brian Siefferman 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.