William Hummer, DDS
NPI 1982722377 · General Practice Dentistry · San Leandro, CA
William Hummer, DDS is a General Practice Dentistry provider in San Leandro, CA (NPI 1982722377).
Provider details
- NPI number
- 1982722377
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
- License
- 33780 (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
19 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.
$52 across 3 records (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
- 2007-03-26
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Hummer's NPI number?
- William Hummer's National Provider Identifier (NPI) is 1982722377, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hummer's specialty?
- William Hummer is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is William Hummer located?
- William Hummer's practice location on file with NPPES is 1239 Harrison St, San Leandro, CA 94577-4515.
- What is William Hummer's phone number?
- The practice phone number listed in the NPPES registry for William Hummer is (510) 351-5711.
- Is William Hummer's NPI active?
- Yes — William Hummer's NPI (1982722377) 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.