Dr. Robert M Maass, DDS
Dr. Robert M Maass is a General Practice Dentistry provider (Dentist) practicing in Castro Valley, CA, registered in the NPPES registry with NPI 1205989415 since 2007. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1205989415 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Robert M Maass |
| Credential | DDS |
| Sex | Male |
| Practice address | 20265 LAKE CHABOT RD, Castro Valley, CA, 94546 |
| Phone | 5108818010 |
| Fax | 5105380120 |
| Enumeration date | 2007-01-19 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223G0001X | General Practice Dentistry | Primary | 25419 | 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: Robert Maass, DDS NPI: 1205989415 Taxonomy: 1223G0001X (General Practice Dentistry) Address: 20265 LAKE CHABOT RD, Castro Valley, CA, 94546
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1114951514 | Reginald Griggs | Individual | Orthodontics and Dentofacial Orthopedics Dentistry | Castro Valley, CA |
| 1851444962 | Shirin Salehinia | Individual | General Practice Dentistry | Castro Valley, CA |
| 1114070315 | George Mackenzie | Individual | General Practice Dentistry | Castro Valley, CA |
| 1053451435 | Jeffrey Erickson | Individual | General Practice Dentistry | Castro Valley, CA |
| 1407982176 | Eugene Santucci | Individual | Dentist | Castro Valley, CA |
| 1396957866 | Creative Dimensions in Dentistry | Organization | Dentist | Castro Valley, CA |
| 1194915009 | Mundeep Chhina | Individual | General Practice Dentistry | Castro Valley, CA |
| 1932811734 | Sierra Kress Dental | Organization | Dental Clinic/Center | Castro Valley, CA |
Verify this record
Cross-check NPI 1205989415 against the authoritative CMS record: view Dr. Robert M Maass 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 2007-07-08.