Kenneth F. Tjeerdsma, DDS
Dentist · Sioux Center, IA
Kenneth F. Tjeerdsma, DDS is a dentist with a practice address in Sioux Center, Iowa, and NPI 1245612050, issued on Jun 29, 2015. Check the license (Iowa DDS 09221, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kenneth F. Tjeerdsma
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- DDS 09221 IA
Self-reported in NPPES; status is on the state search - Practice location
- 33 4TH St NW, Sioux Center, IA 51250
- Phone
- (712) 722-1700
- Enumerated
- Jun 29, 2015
- Record last updated
- Nov 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 726 in Iowa → Look up another NPI →
Also registered at 33 4TH St NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kendra Borchers, PHARMDPharmacist1396503603
- Joselynn Castillo, DDSGeneral Practice Dentistry1710818471
- Maya Deandrade, D.D.S.Dentist1255173522
- Audra Degroot, CNMAdvanced Practice Midwife1427321496
- Yeabsira Doornink, LMSWClinical Social Worker1871104885
- Jeannette Hasley, ARNP, CNMMidwife1477272078
Verify Kenneth F. Tjeerdsma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license DDS 09221Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average dentist in 2024
51 Medicare Part D claims for 42 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin29 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.
Kenneth F. Tjeerdsma among 726 dentist records in Iowa
Kenneth F. Tjeerdsma, DDS is one of 726 dentist records with a practice address in Iowa. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 63% of them.
- NPI issued2015 · 63% of these records are older, 33% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2020 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 dentist records list a practice address in Sioux Center
They are 4 of the 146 NPPES records with a practice address in Sioux Center, and 726 dentist records in Iowa.
All 726 in Iowa → Every provider in Sioux Center → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Leanne Bylsma-Mulder, D.D.S.Sioux Center, IA 512501457304362
- Maya Deandrade, D.D.S.Sioux Center, IA 512501255173522
- Juan Uribe, D.D.SSioux Center, IA 512501932366937
- Austin Blankespoor, DDSRock Valley, IA 512471497431464
- James Jespersen, DDSRock Valley, IA 512471073595955
- Joseph Murphy, DDSRock Rapids, IA 512461467550061
- John Vanderzee, D.D.S.Rock Rapids, IA 512461972721488
- Jean Irwin, D.D.S.Primghar, IA 512451396814810
Common questions
What is Kenneth F. Tjeerdsma, DDS's NPI number?
Kenneth F. Tjeerdsma, DDS's National Provider Identifier (NPI) is 1245612050, issued on Jun 29, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth F. Tjeerdsma, DDS located?
The NPPES record lists a practice address at 33 4TH St NW, Sioux Center, IA, 51250. Phone: (712) 722-1700. Providers update this record themselves, so call before visiting.
How can I verify Kenneth F. Tjeerdsma, DDS's license?
NPPES lists Iowa license number DDS 09221, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Kenneth F. Tjeerdsma, DDS prescribe under Medicare Part D?
In 2024, Kenneth F. Tjeerdsma, DDS had 51 Medicare Part D claims for 42 beneficiaries; the average among dentist prescribers was 86. 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.