Edwin Tjan, DDS
NPI 1396903639 · General Practice Dentistry · Castro Valley, CA
Edwin Tjan, DDS is a General Practice Dentistry provider in Castro Valley, CA (NPI 1396903639).
Provider details
- NPI number
- 1396903639
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- Yes
- License
- 37295 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$59 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-22
- Last updated
- 2008-05-22
Frequently asked questions
- What is Edwin Tjan's NPI number?
- Edwin Tjan's National Provider Identifier (NPI) is 1396903639, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Edwin Tjan's specialty?
- Edwin Tjan is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Edwin Tjan located?
- Edwin Tjan's practice location on file with NPPES is 20353 Lake Chabot Rd, Castro Valley, CA 94546-5392.
- What is Edwin Tjan's phone number?
- The practice phone number listed in the NPPES registry for Edwin Tjan is (510) 886-1113.
- Is Edwin Tjan's NPI active?
- Yes — Edwin Tjan's NPI (1396903639) is active in the NPPES registry as of the last update on 2008-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.