Dr. William James Friedel, DDS
Dr. William James Friedel is a Oral and Maxillofacial Surgery (Dentist) provider (Dentist) practicing in Patchogue, NY, registered in the NPPES registry with NPI 1659320976 since 2006. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1659320976 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. William James Friedel |
| Credential | DDS |
| Sex | Male |
| Practice address | Patchogue, NY, 11772 |
| Phone | 6314752224 |
| Fax | 6316543997 |
| Enumeration date | 2006-05-06 |
| Last updated in NPPES | 2013-03-07 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223S0112X | Oral and Maxillofacial Surgery (Dentist) | Primary | 038555-1 | NY |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: William Friedel, DDS NPI: 1659320976 Taxonomy: 1223S0112X (Oral and Maxillofacial Surgery (Dentist)) Address: Patchogue, NY, 11772
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1356339139 | Anil Mattoo | Individual | Pulmonary Disease Physician | Patchogue, NY |
| 1932165560 | James Semertzides | Individual | Cardiovascular Disease Physician | East Patchogue, NY |
| 1528019403 | Richard Dyckman | Individual | Cardiovascular Disease Physician | East Patchogue, NY |
| 1124079173 | Shahriar Khalili | Individual | Cardiovascular Disease Physician | East Patchogue, NY |
| 1477506418 | Victor Nikirk | Individual | Occupational Therapist | East Patchogue, NY |
| 1558441584 | Musarrat Iqbal | Individual | Pain Medicine (Anesthesiology) Physician | East Patchogue, NY |
| 1649355785 | Joo Sohn | Individual | Pediatrics Physician | East Patchogue, NY |
Verify this record
Cross-check NPI 1659320976 against the authoritative CMS record: view Dr. William James Friedel 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 2026-07-10. Provider record last updated 2013-03-07.