Dr. A. Gregory Sims, D.D.S.
Dr. A. Gregory Sims is a General Practice Dentistry provider (Dentist) practicing in Centennial, CO, registered in the NPPES registry with NPI 1174646152 since 2007. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1174646152 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. A. Gregory Sims |
| Credential | D.D.S. |
| Sex | Male |
| Practice address | Centennial, CO, 80111 |
| Phone | 3032908833 |
| Fax | 3032906037 |
| Enumeration date | 2007-04-06 |
| 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 | 7828 | CO |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: A. Sims, D.D.S. NPI: 1174646152 Taxonomy: 1223G0001X (General Practice Dentistry) Address: Centennial, CO, 80111
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1750389235 | William Silvers | Individual | Allergy Physician | Centennial, CO |
| 1710913751 | Jane Burnham | Individual | Neurology Physician | Centennial, CO |
| 1548360050 | Steven Weinstein | Individual | General Practice Dentistry | Centennial, CO |
| 1629150073 | Jan Parker Smart | Individual | General Practice Dentistry | Centennial, CO |
| 1013091537 | Charles Lee | Individual | General Practice Dentistry | Centennial, CO |
| 1255417697 | Emily Becker | Individual | Medical Physician Assistant | Centennial, CO |
| 1285705780 | Marie Starling | Individual | Chiropractor | Centennial, CO |
| 1760554885 | Christopher Butler | Individual | Chiropractor | Centennial, CO |
Verify this record
Cross-check NPI 1174646152 against the authoritative CMS record: view Dr. A. Gregory Sims 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
What specialty is A. Sims?
Is this the official NPI registry?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.