Dennis Loren Simonsen, D.M.D.
General Practice Dentistry · Beaverton, OR
Dennis Loren Simonsen, D.M.D. is a general practice dentistry with a practice address in Beaverton, Oregon, and NPI 1104816529, issued on Oct 26, 2005. Check the license (Oregon D8454, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dennis Loren Simonsen
- Credential
- D.M.D.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- D8454 OR
Self-reported in NPPES; status is on the state search - Practice location
- 14125 SW Farmington RD, Beaverton, OR 97005
- Phone
- (503) 646-3169
- Enumerated
- Oct 26, 2005
- Record last updated
- Jun 12, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (503) 646-1667
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,888 in Oregon → Look up another NPI →
Also registered at 14125 SW Farmington RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jason Atack, DMDDentist1235382557
- James Johnsen, D.M.D.General Practice Physician1588662738
- Robert Rath, M.D.Family Medicine Physician1174642367
- Ronald Wismer, DMDGeneral Practice Dentistry1124023627
Verify Dennis Loren Simonsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license D8454Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average general practice dentistry in 2024
23 Medicare Part D claims for 21 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin14 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: $15.08
1 payment: food and beverage; the largest payer was OraPharma, a division of Bausch Health US, LLC. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Dennis Loren Simonsen among 1,888 general practice dentistry records in Oregon
Dennis Loren Simonsen, D.M.D. is one of 1,888 general practice dentistry 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2014 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
87 general practice dentistry records list a practice address in Beaverton
They are 87 of the 3,604 NPPES records with a practice address in Beaverton, and 1,888 general practice dentistry records in Oregon.
All 1,888 in Oregon → Every provider in Beaverton → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Mark Alder, DMDBeaverton, OR 970051013909688
- My Dang, D.D.S.Beaverton, OR 970051215938329
- Joshua Eubanks, DMDBeaverton, OR 970051356382055
- Donald Hess, D.D.S.Beaverton, OR 970051386667772
- Gordon Hoversland, DMDBeaverton, OR 970051518927979
- Janice Kalina, DDSBeaverton, OR 970051609809755
- John Kloucek, DMDBeaverton, OR 970051972598357
- Irina Moga, DDSBeaverton, OR 970051952329526
Common questions
What is Dennis Loren Simonsen, D.M.D.'s NPI number?
Dennis Loren Simonsen, D.M.D.'s National Provider Identifier (NPI) is 1104816529, issued on Oct 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Loren Simonsen, D.M.D. located?
The NPPES record lists a practice address at 14125 SW Farmington RD, Beaverton, OR, 97005. Phone: (503) 646-3169. Providers update this record themselves, so call before visiting.
How can I verify Dennis Loren Simonsen, D.M.D.'s license?
NPPES lists Oregon license number D8454, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Dennis Loren Simonsen, D.M.D. prescribe under Medicare Part D?
In 2024, Dennis Loren Simonsen, D.M.D. had 23 Medicare Part D claims for 21 beneficiaries; the average among general practice dentistry prescribers was 83. 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.