Robert Jeffrey Williams, D.D.S.
General Practice Dentistry · Napa, CA
Robert Jeffrey Williams, D.D.S. is a general practice dentistry with a practice address in Napa, California, and NPI 1457439911, issued on Nov 1, 2006. Check the license (California 45340, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Robert Jeffrey Williams
- Credential
- D.D.S.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 45340 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Professional Dr, Napa, CA 94558
- Phone
- (707) 252-7733
- Enumerated
- Nov 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 252-4639
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Also registered at 1000 Professional Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Jeon, D.D.S.Dentist1891189452
Verify Robert Jeffrey Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 45340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $67.21
1 payment: food and beverage; the largest payer was Inspire Medical Systems, Inc. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Robert Jeffrey Williams among 17,852 general practice dentistry records in California
Robert Jeffrey Williams, D.D.S. is one of 17,852 general practice dentistry records with a practice address in California. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 71% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
50 general practice dentistry records list a practice address in Napa
They are 50 of the 3,583 NPPES records with a practice address in Napa, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Napa → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Sarah Aylard, DDSNapa, CA 945581801816368
- Randall Boyd, DDSNapa, CA 945581164586970
- Jayma Claus, D.D.S.Napa, CA 945581215034236
- Adrian Fenderson, DDSNapa, CA 945581306854377
- Glenn Giamo, DOCTOR OF DENTAL SURNapa, CA 945581245390301
- David Goodwill, D.D.S.Napa, CA 945581366556367
- Rolinda Harsany, DDSNapa, CA 945581780609586
- Thomas Johnson, D.M.D.Napa, CA 945581750470688
Common questions
What is Robert Jeffrey Williams, D.D.S.'s NPI number?
Robert Jeffrey Williams, D.D.S.'s National Provider Identifier (NPI) is 1457439911, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Jeffrey Williams, D.D.S. located?
The NPPES record lists a practice address at 1000 Professional Dr, Napa, CA, 94558. Phone: (707) 252-7733. Providers update this record themselves, so call before visiting.
How can I verify Robert Jeffrey Williams, D.D.S.'s license?
NPPES lists California license number 45340, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.