NPPES file of Aug 9, 2026

Michael Thomas Dryden, DDS

Endodontics · Eugene, OR

Michael Thomas Dryden, DDS is an endodontics with a practice address in Eugene, Oregon, and NPI 1588744809, issued on Oct 17, 2006. Check the license (Oregon D8044, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588744809
Name
Michael Thomas Dryden
Credential
DDS
Primary taxonomy
Endodontics 1223E0200X
License number
D8044 OR
Self-reported in NPPES; status is on the state search
Practice location
750 Goodpasture Island RD, Eugene, OR 97401
Phone
(541) 484-0470
Enumerated
Oct 17, 2006
Record last updated
Aug 17, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(541) 484-1552
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 750 Goodpasture Island RD

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

  1. Jim Ruckman, JIM RUCKMAN D.M.D.Endodontics1679738850
  2. Jeffrey Steed, D.M.DEndodontics1982013116

Verify Michael Thomas Dryden in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Oregon board licenses this profession
    Search for license D8044
    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 Oregon license search

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12% fewer Medicare Part D claims than the average endodontics in 2024

107 Medicare Part D claims for 93 beneficiaries, against an average of 121 among the 4,119 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Michael Dryden107
  2. Specialty average121

Most prescribed

  1. Amoxicillin78 claims
  2. Chlorhexidine Gluconate11 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: $1,406.36

11 payments; by number, the most common kind was food and beverage; the largest payer was Zimvie Inc. The 2,057 providers of this specialty with any payment received $49,739.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Dryden$1,406
  2. Specialty average$49,740

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

Michael Thomas Dryden among 113 endodontics records in Oregon

Michael Thomas Dryden, DDS is one of 113 endodontics records with a practice address in Oregon. 60% 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 18% of them.

  • NPI issued2006 · 18% of these records are older, 51% newer
  • In a Medicare fileYes · 60% of these records are
  • In the CMS Doctors and Clinicians fileNo · 0% of these records are
  • Record last updated2021 · 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 1223E0200X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Endodontics providers in Oregon

There are 113 endodontics records in Oregon.

The 8 endodontics records with the nearest ZIP codes

  1. Daniel Bitner, D.M.D.Eugene, OR 974011891857462
  2. Emily Case, DDSEugene, OR 974011669857371
  3. Frederick O'Donnell, DDSEugene, OR 974011306973490
  4. Jim Ruckman, JIM RUCKMAN D.M.D.Eugene, OR 974011679738850
  5. Jeffrey Steed, D.M.DEugene, OR 974011982013116
  6. Karl Wagenknecht, D.M.D.Eugene, OR 974031891851424
  7. Tian Xia, DMDEugene, OR 974031548319767
  8. Daniel Erickson, DDSEugene, OR 974051538183983

Common questions

What is Michael Thomas Dryden, DDS's NPI number?

Michael Thomas Dryden, DDS's National Provider Identifier (NPI) is 1588744809, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael Thomas Dryden, DDS located?

The NPPES record lists a practice address at 750 Goodpasture Island RD, Eugene, OR, 97401. Phone: (541) 484-0470. Providers update this record themselves, so call before visiting.

How can I verify Michael Thomas Dryden, DDS's license?

NPPES lists Oregon license number D8044, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.

How much does Michael Thomas Dryden, DDS prescribe under Medicare Part D?

In 2024, Michael Thomas Dryden, DDS had 107 Medicare Part D claims for 93 beneficiaries; the average among endodontics prescribers was 121. 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.