Dr. John Joseph Ahern, D.D.S.
Dr. John Joseph Ahern is a General Practice Dentistry provider (Dentist) practicing in Exeter, NH, registered in the NPPES registry with NPI 1821175738 since 2006. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1821175738 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. John Joseph Ahern |
| Credential | D.D.S. |
| Sex | Male |
| Practice address | 1 HAMPTON RD UNIT 305, Exeter, NH, 03833 |
| Phone | 6035834533 |
| Fax | 6035834507 |
| Enumeration date | 2006-11-01 |
| Last updated in NPPES | 2019-12-31 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223G0001X | General Practice Dentistry | Primary | 2017 | NH |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: John Ahern, D.D.S. NPI: 1821175738 Taxonomy: 1223G0001X (General Practice Dentistry) Address: 1 HAMPTON RD UNIT 305, Exeter, NH, 03833
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1730258641 | Matthew Heimbach | Individual | General Practice Dentistry | Exeter, NH |
| 1003337288 | Timothy Ahern | Individual | General Practice Dentistry | Exeter, NH |
Verify this record
Cross-check NPI 1821175738 against the authoritative CMS record: view Dr. John Joseph Ahern 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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Where does John Ahern practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2019-12-31.