Registry data as of Aug 27, 2026

Thomas Greidanus

Dentist · Hudsonville, MI

Thomas Greidanus is a dentist with a practice address in Hudsonville, Michigan, and NPI 1396316964, issued on Jul 6, 2021. Check the license (Michigan 2901601075, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1396316964
Name
Thomas Greidanus
Primary taxonomy
Dentist 122300000X
License number
2901601075 MI
Self-reported in NPPES; status is on the state search
Practice location
3250 Central Blvd, Hudsonville, MI 49426
Phone
(616) 669-6600
Enumerated
Jul 6, 2021
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 3250 Central Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Bradley Dykstra, DDSGeneral Practice Dentistry1912117128
  2. Benjamin Schell, DDSDentist1700370251
  3. Dale Schuur, DDSDentist1568685279
  4. Areum SonGeneral Practice Dentistry1881438133
  5. Kathryn Swanson, D.D.S.Pediatric Dentistry1053726422
  6. Brian Yared, D.D.S.Dentist1205877925

Verify Thomas Greidanus in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Michigan board licenses this profession
    Search for license 2901601075
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

37% fewer Medicare Part D claims than the average dentist in 2024

54 Medicare Part D claims for 41 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.

  1. Thomas Greidanus54
  2. Specialty average86

Most prescribed

  1. Amoxicillin34 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.

7 dentist records list a practice address in Hudsonville

They are 7 of the 277 NPPES records with a practice address in Hudsonville, and 3,439 dentist records in Michigan.

Other dentist records in Michigan

  1. Chase Aaron, DDSDetroit, MI1427637354
  2. Natasha Aazami, DDSRoseville, MI1518352145
  3. Mohammad AbbasJackson, MI1144140104
  4. Jaime Abbott, DDSMontrose, MI1740334887
  5. Mina Abd, DMDWarren, MI1528704129
  6. Ali Abdallah, DMDSouthgate, MI1841082310
  7. Nicholas Abdallah, DDSWoodhaven, MI1225567688
  8. Sumia Abdallah, DDSDetroit, MI1841482239
  9. Albert AbdelnourLivonia, MI1124953211
  10. Fadia Abdouni, DDSBloomfield Hills, MI1144307026

Common questions

What is Thomas Greidanus's NPI number?

Thomas Greidanus's National Provider Identifier (NPI) is 1396316964, issued on Jul 6, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Greidanus located?

The NPPES record lists a practice address at 3250 Central Blvd, Hudsonville, MI, 49426. Phone: (616) 669-6600. Providers update this record themselves, so call before visiting.

How can I verify Thomas Greidanus's license?

NPPES lists Michigan license number 2901601075, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.

How much does Thomas Greidanus prescribe under Medicare Part D?

In 2024, Thomas Greidanus had 54 Medicare Part D claims for 41 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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) 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 27, 2026.