Dr. David Leonard Olsen, D.D.S., M.S.
Dr. David Leonard Olsen is a Orthodontics and Dentofacial Orthopedics Dentistry provider (Dentist) practicing in Appleton, WI, registered in the NPPES registry with NPI 1205922861 since 2006. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1205922861 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. David Leonard Olsen |
| Credential | D.D.S., M.S. |
| Sex | Male |
| Practice address | Appleton, WI, 54915 |
| Phone | 9207312777 |
| Fax | 9207333402 |
| Enumeration date | 2006-10-04 |
| 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 |
|---|---|---|---|---|
| 1223X0400X | Orthodontics and Dentofacial Orthopedics Dentistry | Primary | 2491 | WI |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: David Olsen, D.D.S., M.S. NPI: 1205922861 Taxonomy: 1223X0400X (Orthodontics and Dentofacial Orthopedics Dentistry) Address: Appleton, WI, 54915
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1497033609 | Katherine Erstad | Individual | Nurse Practitioner | Appleton, WI |
| 1508142001 | Teresa Gajewski | Individual | Physician Assistant | Appleton, WI |
| 1033465679 | Kirsten Pethan | Individual | Physician Assistant | Appleton, WI |
| 1689088825 | Anne Jordan | Individual | Family Medicine Physician | Appleton, WI |
Verify this record
Cross-check NPI 1205922861 against the authoritative CMS record: view Dr. David Leonard Olsen 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
Where does David Olsen practice?
What is the NPI number for David Olsen?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.