Willem Simon Christiaan Van Opijnen, DDS
General Practice Dentistry · Red Bluff, CA
Willem Simon Christiaan Van Opijnen, DDS is a general practice dentistry with a practice address in Red Bluff, California, and NPI 1356448377, issued on Sep 20, 2006. Check the license (California DP037178, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Willem Simon Christiaan Van Opijnen
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- DP037178 CA
Self-reported in NPPES; status is on the state search - Practice location
- 445 Elm St, Red Bluff, CA 96080
- Phone
- (530) 527-2877
- Enumerated
- Sep 20, 2006
- Record last updated
- Jun 14, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (530) 527-2848
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Verify Willem Simon Christiaan Van Opijnen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license DP037178Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average general practice dentistry in 2024
35 Medicare Part D claims for 18 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin21 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $288.79
3 payments; by number, the most common kind was gift; the largest payer was Ultradent Products 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.
Willem Simon Christiaan Van Opijnen among 17,852 general practice dentistry records in California
Willem Simon Christiaan Van Opijnen, DDS 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 updated2010 · 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).
16 general practice dentistry records list a practice address in Red Bluff
They are 16 of the 704 NPPES records with a practice address in Red Bluff, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Red Bluff → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Omar Dyab, DDSRed Bluff, CA 960801235267980
- William Goodin, DDSRed Bluff, CA 960801245340306
- Razan Hamzeh, DDSRed Bluff, CA 960801972964559
- Enos Heinzen, D.D.SRed Bluff, CA 960801093147746
- Thomas Lewis, DDSRed Bluff, CA 960801760601876
- Maria Juvy Libao, DDSRed Bluff, CA 960801013185636
- Paul Moon, D.D.S.Red Bluff, CA 960801508956012
- William Moore, D.M.D.Red Bluff, CA 960801689688350
Common questions
What is Willem Simon Christiaan Van Opijnen, DDS's NPI number?
Willem Simon Christiaan Van Opijnen, DDS's National Provider Identifier (NPI) is 1356448377, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Willem Simon Christiaan Van Opijnen, DDS located?
The NPPES record lists a practice address at 445 Elm St, Red Bluff, CA, 96080. Phone: (530) 527-2877. Providers update this record themselves, so call before visiting.
How can I verify Willem Simon Christiaan Van Opijnen, DDS's license?
NPPES lists California license number DP037178, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Willem Simon Christiaan Van Opijnen, DDS prescribe under Medicare Part D?
In 2024, Willem Simon Christiaan Van Opijnen, DDS had 35 Medicare Part D claims for 18 beneficiaries; the average among general practice dentistry prescribers was 83. Part D covers Medicare prescriptions 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.