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Robert Maass, DDS
NPI 1205989415 · General Practice Dentistry · Castro Valley, CA
Robert Maass, DDS is a General Practice Dentistry provider in Castro Valley, CA (NPI 1205989415).
Provider details
- NPI number
- 1205989415
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
- License
- 25419 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
20265 Lake Chabot Rd
Castro Valley, CA 94546-5307
Phone: (510) 881-8010
Fax: (510) 538-0120
Street-level locationGet directions
Mailing address
5854 Highwood Rd
Castro Valley, CA 94552-1822
Registry dates
- Enumerated
- 2007-01-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is Robert Maass's NPI number?
- Robert Maass's National Provider Identifier (NPI) is 1205989415, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Maass's specialty?
- Robert Maass is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Robert Maass located?
- Robert Maass's practice location on file with NPPES is 20265 Lake Chabot Rd, Castro Valley, CA 94546-5307.
- What is Robert Maass's phone number?
- The practice phone number listed in the NPPES registry for Robert Maass is (510) 881-8010.
- Is Robert Maass's NPI active?
- Yes — Robert Maass's NPI (1205989415) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.