Ian P. Van Zyl, DDS, MS
Prosthodontics · Middletown, CA
Ian P. Van Zyl, DDS, MS is a prosthodontics with a practice address in Middletown, California, and NPI 1700096377, issued on May 23, 2007. Check the license (California 45050, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ian P. Van Zyl
- Credential
- DDS, MS
- Primary taxonomy
- Prosthodontics 1223P0700X
- License number
- 45050 CA
Self-reported in NPPES; status is on the state search - Practice location
- 21038 Calistoga St., Middletown, CA 95461
- Phone
- (707) 987-2773
- Enumerated
- May 23, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 987-0688
- Entity
- Type 1 · individual
8 nearest prosthodontics records → All 474 in California → Look up another NPI →
Also registered at 21038 Calistoga St.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ewa Konopka, DDSPeriodontics1285844852
Verify Ian P. Van Zyl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 45050Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average prosthodontics in 2024
47 Medicare Part D claims for 31 beneficiaries, against an average of 90 among the 1,779 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin21 claims
- Chlorhexidine Gluconate14 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.
Ian P. Van Zyl among 474 prosthodontics records in California
Ian P. Van Zyl, DDS, MS is one of 474 prosthodontics records with a practice address in California. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 25% of them.
- NPI issued2007 · 25% of these records are older, 45% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileNo · 3% of these records are
- Record last updated2007 · 80% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 prosthodontics record lists a practice address in Middletown
They are 1 of the 18 NPPES records with a practice address in Middletown, and 474 prosthodontics records in California.
All 474 in California → Every provider in Middletown → Prosthodontics nationwide →
The 8 prosthodontics records with the nearest ZIP codes
- Paul Vartabedian, D.D.S.Lakeport, CA 954531518038611
- Terry Eggleston, DDSSanta Rosa, CA 954091770721037
- Debora Rayhan, D.D.S.Santa Rosa, CA 954091043458169
- Larry Harman, DDSSanta Rosa, CA 954051760698229
- Ulf Temnitzer, D.D.SSanta Rosa, CA 954031881027969
- John Fujikawa, DDSModesto, CA 953511467781716
- Peter Soderstrom, DDS, MSModesto, CA 953501104944537
- Paul Katz, D.D.S.Citrus Heights, CA 956101821166323
Common questions
What is Ian P. Van Zyl, DDS, MS's NPI number?
Ian P. Van Zyl, DDS, MS's National Provider Identifier (NPI) is 1700096377, issued on May 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ian P. Van Zyl, DDS, MS located?
The NPPES record lists a practice address at 21038 Calistoga St., Middletown, CA, 95461. Phone: (707) 987-2773. Providers update this record themselves, so call before visiting.
How can I verify Ian P. Van Zyl, DDS, MS's license?
NPPES lists California license number 45050, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ian P. Van Zyl, DDS, MS prescribe under Medicare Part D?
In 2024, Ian P. Van Zyl, DDS, MS had 47 Medicare Part D claims for 31 beneficiaries; the average among prosthodontics prescribers was 90. 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.