Dr. Matthew Lassen, DMD
Dr. Matthew Lassen is a Dentist provider (Dentist) practicing in Bastrop, TX, registered in the NPPES registry with NPI 1013267855 since 2012. The credential DMD stands for Doctor of Medicine in Dentistry. Practices at Romney Lassen Dental (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1013267855 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Matthew Lassen |
| Credential | DMD |
| Sex | Male |
| Practice address | 805 SPRING ST, Bastrop, TX, 78602 |
| Phone | 5123211600 |
| Fax | 5123212355 |
| Enumeration date | 2012-09-19 |
| Last updated in NPPES | 2012-09-19 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | 27098 | TX |
DMD — Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential
Copy-ready billing details
Provider: Matthew Lassen, DMD NPI: 1013267855 Taxonomy: 122300000X (Dentist) Address: 805 SPRING ST, Bastrop, TX, 78602
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1629273123 | Gary Rassner | Individual | Dentist | Batrop, TX |
| 1306117510 | Romney Lassen Dental | Organization | Dental Clinic/Center | Bastrop, TX |
| 1710237557 | Brian Romney | Individual | Dentist | Bastrop, TX |
Verify this record
Cross-check NPI 1013267855 against the authoritative CMS record: view Dr. Matthew Lassen 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 2012-09-19.