Dr. Thomas M Simpson, D.D.S.
Dr. Thomas M Simpson is a General Practice Dentistry provider (Dentist) practicing in Boulder, CO, registered in the NPPES registry with NPI 1568573095 since 2006. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1568573095 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Thomas M Simpson |
| Credential | D.D.S. |
| Sex | Male |
| Practice address | Boulder, CO, 80304 |
| Phone | 3034424437 |
| Fax | 3035455324 |
| Enumeration date | 2006-08-31 |
| Last updated in NPPES | 2008-06-05 |
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 | 105204 | CO |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 139603 | Other | CO | UNITED CONCORDIA PROVIDER |
| 02052041 | Medicaid | CO | — |
Copy-ready billing details
Provider: Thomas Simpson, D.D.S. NPI: 1568573095 Taxonomy: 1223G0001X (General Practice Dentistry) Address: Boulder, CO, 80304
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1235283748 | Frederick Donaghy | Individual | General Practice Dentistry | Boulder, CO |
| 1194984971 | Thomas M Simpson DDS PC | Organization | General Practice Dentistry | Boulder, CO |
| 1659712206 | Jonathan Smith | Individual | Dentist | Boulder, CO |
| 1710370176 | Mike Carpenter, DDS | Organization | Dentist | Boulder, CO |
| 1588109862 | Boulder Canyon Dental Pllc | Organization | Dentist | Boulder, CO |
Verify this record
Cross-check NPI 1568573095 against the authoritative CMS record: view Dr. Thomas M Simpson 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 2008-06-05.