Mrs. Nancy Derham, DDS
Mrs. Nancy Derham is a General Practice Dentistry provider (Dentist) practicing in Novato, CA, registered in the NPPES registry with NPI 1285805721 since 2008. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1285805721 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mrs. Nancy Derham |
| Credential | DDS |
| Sex | Female |
| Practice address | Novato, CA, 94947 |
| Phone | 4158924721 |
| Fax | 4158925921 |
| Enumeration date | 2008-03-12 |
| Last updated in NPPES | 2008-03-12 |
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 | 38914 | CA |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: Nancy Derham, DDS NPI: 1285805721 Taxonomy: 1223G0001X (General Practice Dentistry) Address: Novato, CA, 94947
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1821086836 | Lawson Evans | Individual | General Practice Dentistry | Novato, CA |
| 1841301371 | Mahr Elder | Individual | Oral and Maxillofacial Surgery (Dentist) | Novato, CA |
| 1598863607 | Michael Rosenthal | Individual | General Practice Dentistry | Novato, CA |
| 1477681591 | Rajiv Anand | Individual | General Practice Dentistry | Novato, CA |
| 1144358201 | Michael L Rosenthal DDS & Rajiv J Anand DDS Inc | Organization | General Practice Dentistry | Novato, CA |
| 1215128988 | Mahr Elder DDS MD P C | Organization | Oral and Maxillofacial Surgery (Dentist) | Novato, CA |
| 1255502522 | Nancy Derham Dental Corporation | Organization | General Practice Dentistry | Novato, CA |
Verify this record
Cross-check NPI 1285805721 against the authoritative CMS record: view Mrs. Nancy Derham 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 2008-03-12.