Dr. Cynthia Mary Ruff, DDS
Dr. Cynthia Mary Ruff is a General Practice Dentistry provider (Dentist) practicing in Fairfield, CA, registered in the NPPES registry with NPI 1336142322 since 2005. The credential DDS stands for Doctor of Dental Surgery. Practices at Northbay Family Compounding Pharmacy LLC (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1336142322 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Cynthia Mary Ruff |
| Credential | DDS |
| Sex | Female |
| Practice address | Fairfield, CA, 94533 |
| Phone | 7074273100 |
| Fax | 7074273101 |
| Enumeration date | 2005-05-23 |
| Last updated in NPPES | 2014-07-19 |
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 | 29098 | 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: Cynthia Ruff, DDS NPI: 1336142322 Taxonomy: 1223G0001X (General Practice Dentistry) Address: Fairfield, CA, 94533
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1942511399 | Northbay Family Compounding Pharmacy LLC | Organization | Compounding Pharmacy | Fairfield, CA |
Verify this record
Cross-check NPI 1336142322 against the authoritative CMS record: view Dr. Cynthia Mary Ruff 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 2014-07-19.