IndividualActive
Mark Sylvester, D.D.S.
NPI 1851396733 · General Practice Dentistry · Hayward, CA
Mark Sylvester, D.D.S. is a General Practice Dentistry provider in Hayward, CA (NPI 1851396733).
Provider details
- NPI number
- 1851396733
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- D.D.S.
- Sex
- Male
- License
- 23568 (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
21 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
1680 B St
Ste a
Hayward, CA 94541-3040
Phone: (510) 581-8366
Fax: (510) 581-8382
Street-level locationGet directions
Mailing address
25500 Dario Ter
Hayward, CA 94541-5630
Registry dates
- Enumerated
- 2005-06-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Sylvester's NPI number?
- Mark Sylvester's National Provider Identifier (NPI) is 1851396733, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Sylvester's specialty?
- Mark Sylvester is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Mark Sylvester located?
- Mark Sylvester's practice location on file with NPPES is 1680 B St, Hayward, CA 94541-3040.
- What is Mark Sylvester's phone number?
- The practice phone number listed in the NPPES registry for Mark Sylvester is (510) 581-8366.
- Is Mark Sylvester's NPI active?
- Yes — Mark Sylvester's NPI (1851396733) 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.