Registry data as of Aug 27, 2026

Matthew Gassen, D.D.S.

General Practice Dentistry · Jefferson City, MO

Matthew Gassen, D.D.S. is a general practice dentistry with a practice address in Jefferson City, Missouri, and NPI 1619065695, issued on Oct 11, 2006. Check the license with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1619065695
Name
Matthew Gassen
Credential
D.D.S.
Primary taxonomy
General Practice Dentistry 1223G0001X
Practice location
1801 Stadium Blvd, Jefferson City, MO 65109
Phone
(573) 634-3050
Enumerated
Oct 11, 2006
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 1801 Stadium Blvd

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

  1. Daniel Teubner, D.D.S.,PCDentist1689697138

Verify Matthew Gassen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this professionCheck 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 Missouri 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.

3.1 times the Medicare Part D claims of the average general practice dentistry in 2024

263 Medicare Part D claims for 134 beneficiaries, against an average of 84 among the 68,591 providers of this specialty who prescribed in Part D.

  1. Matthew Gassen263
  2. Specialty average84

Most prescribed

  1. Cephalexin137 claims
  2. Amoxicillin60 claims
  3. Clindamycin Hcl51 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: $797.86

11 payments, mostly gift; the largest payer was Ultradent Products Inc. The 40,968 providers of this specialty with any payment received $593.28 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Matthew Gassen$797.86
  2. Specialty average$593.28

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

23 general practice dentistry records list a Jefferson City practice address

They are 23 of the 1,414 NPPES records with a Jefferson City practice address, and 1,951 general practice dentistry records in Missouri.

Other general practice dentistry records in Missouri

  1. Paria Abbassian, DDSFenton, MO1255907150
  2. Dennis Abbott, D.D.S.Joplin, MO1881602324
  3. Balsim Abdulwahed, DDSPlatte City, MO1366365744
  4. Michael Abels, D.D.S.Saint Louis, MO1467566471
  5. John Adams, D.D.S.Fredericktown, MO1881847531
  6. Robert Adams, D.D.S.Springfield, MO1194861377
  7. Byron AdenCape Girardeau, MO1093829020
  8. Adegbenga Adepoju, DMDSpringfield, MO1437687928
  9. Arsen Adjemian, D.D.S.Kansas City, MO1295768430
  10. Alexander Ahmadi, DMDSaint Louis, MO1801493762

Common questions

What is Matthew Gassen, D.D.S.'s NPI number?

Matthew Gassen, D.D.S.'s National Provider Identifier (NPI) is 1619065695, issued on Oct 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Gassen, D.D.S. located?

The NPPES record lists a practice address at 1801 Stadium Blvd, Jefferson City, MO, 65109. Phone: (573) 634-3050. Providers update this record themselves, so call before visiting.

How can I verify Matthew Gassen, D.D.S.'s license?

Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

How much does Matthew Gassen, D.D.S. prescribe under Medicare Part D?

In 2024, Matthew Gassen, D.D.S. had 263 Medicare Part D claims for 134 beneficiaries; the average among general practice dentistry prescribers was 84. 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.