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Robert Darnell, D.D.S.
NPI 1144316993 · General Practice Dentistry · Castro Valley, CA
Robert Darnell, D.D.S. is a General Practice Dentistry provider in Castro Valley, CA (NPI 1144316993).
Provider details
- NPI number
- 1144316993
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- D.D.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 28534 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(91/100 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
20632 Redwood Rd
Suite a
Castro Valley, CA 94546-5602
Phone: (510) 582-1602
Fax: (510) 582-1604
Street-level locationGet directions
Mailing address
30632 Redwood Road Suite a
Castro Valley, CA 94546
Registry dates
- Enumerated
- 2006-10-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is Robert Darnell's NPI number?
- Robert Darnell's National Provider Identifier (NPI) is 1144316993, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Darnell's specialty?
- Robert Darnell is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Robert Darnell located?
- Robert Darnell's practice location on file with NPPES is 20632 Redwood Rd, Castro Valley, CA 94546-5602.
- What is Robert Darnell's phone number?
- The practice phone number listed in the NPPES registry for Robert Darnell is (510) 582-1602.
- Is Robert Darnell's NPI active?
- Yes — Robert Darnell's NPI (1144316993) 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.