Dr. Gregory Adrian Hack, DDS
Dr. Gregory Adrian Hack is a Orthodontics and Dentofacial Orthopedics Dentistry provider (Dentist) practicing in Waterford, CT, registered in the NPPES registry with NPI 1013118611 since 2007. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1013118611 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Gregory Adrian Hack |
| Credential | DDS |
| Sex | Male |
| Practice address | 196 PARKWAY S, SUITE 305, Waterford, CT, 06385 |
| Phone | 8604431827 |
| Fax | 8604431745 |
| Enumeration date | 2007-05-30 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223X0400X | Orthodontics and Dentofacial Orthopedics Dentistry | Primary | 007723 | CT |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: Gregory Hack, DDS NPI: 1013118611 Taxonomy: 1223X0400X (Orthodontics and Dentofacial Orthopedics Dentistry) Address: 196 PARKWAY S, SUITE 305, Waterford, CT, 06385
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1235136094 | Mithlesh Govil | Individual | Hematology & Oncology Physician | Waterford, CT |
| 1568453942 | Naeem Tahir | Individual | Hematology & Oncology Physician | Waterford, CT |
| 1245214220 | Mark Fiengo | Individual | Cardiovascular Disease Physician | Waterford, CT |
| 1336113703 | Frank Maletz | Individual | Orthopaedic Surgery Physician | Waterford, CT |
| 1124092457 | Susan Schroeder | Individual | Physician Assistant | Waterford, CT |
| 1629042932 | Christopher Smith | Individual | Physician Assistant | Waterford, CT |
| 1871567982 | Jeffrey Salkin | Individual | Orthopaedic Surgery Physician | Waterford, CT |
| 1487628590 | Warren Burrows | Individual | Orthopaedic Hand Surgery Physician | Waterford, CT |
Verify this record
Cross-check NPI 1013118611 against the authoritative CMS record: view Dr. Gregory Adrian Hack 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.