William J. Lewis, DDS, Inc.
William J. Lewis, DDS, Inc. is a healthcare organization registered as General Practice Dentistry in Chelmsford, MA, holding Type 2 (organization) NPI 1811020621 since 2007. The authorized official on file is William Lewis, President.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1811020621 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | William J. Lewis, DDS, Inc. |
| Practice address | 3 COURTHOUSE LN, Chelmsford, MA, 01824 |
| Phone | 9782563909 |
| Fax | 9784413131 |
| Enumeration date | 2007-03-13 |
| Last updated in NPPES | 2020-08-22 |
Authorized official
| Name | William Lewis |
|---|---|
| Title | President |
| Phone | 9782563909 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223G0001X | General Practice Dentistry | Primary | 16306 | MA |
Copy-ready billing details
Provider: William J. Lewis, DDS, Inc. NPI: 1811020621 Taxonomy: 1223G0001X (General Practice Dentistry) Address: 3 COURTHOUSE LN, Chelmsford, MA, 01824
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1821034802 | Wendla Windt | Individual | Clinical Social Worker | Chelmsford, MA |
| 1124047089 | Elyse Lemaire | Individual | Clinical Psychologist | Chelmsford, MA |
| 1164520631 | Ricardo Dancel | Individual | Psychiatry Physician | Chelmsford, MA |
| 1265507826 | Dr John A Duggan Inc | Organization | Optometrist | Chelmsford, MA |
| 1134327539 | Seven Hills Behavioral Health | Organization | Community/Behavioral Health Agency | Chelmsford, MA |
| 1073703807 | Kasirye Segwanyi | Individual | Counselor | Chelmsford, MA |
| 1548451883 | Kathleen Doyle | Individual | Mental Health Counselor | Chelmsford, MA |
| 1972874014 | Arbor Homecare Services LLC | Organization | Home Health Agency | Chelmsford, MA |
Verify this record
Cross-check NPI 1811020621 against the authoritative CMS record: view William J. Lewis, DDS, Inc. 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
Who is the authorized official for William J. Lewis, DDS, Inc.?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-08-22.