Mark Timothy Eilers, D.M.D.
General Practice Dentistry · Portland, OR
Mark Timothy Eilers, D.M.D. is a general practice dentistry with a practice address in Portland, Oregon, and NPI 1811983190, issued on Sep 22, 2005. Check the license (Oregon 8604, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Timothy Eilers
- Credential
- D.M.D.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 8604 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1724 NE 42ND Ave, Portland, OR 97213
- Phone
- (503) 281-8110
- Enumerated
- Sep 22, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (503) 284-8963
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,888 in Oregon → Look up another NPI →
Also registered at 1724 NE 42ND Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer ChambersAcupuncturist1104115419
Verify Mark Timothy Eilers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license 8604Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average general practice dentistry in 2024
19 Medicare Part D claims for 15 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
- Amoxicillin11 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: $235.67
3 payments; by number, the most common kind was food and beverage; the largest payer was A-dec, Inc. 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.
Mark Timothy Eilers among 1,888 general practice dentistry records in Oregon
Mark Timothy Eilers, 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 updated2026 · 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).
General Practice Dentistry providers in Oregon
There are 1,888 general practice dentistry records in Oregon.
All 1,888 in Oregon → Every provider in Portland → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- George Brant, D.M.D.Portland, OR 972131457343659
- May Chang, DDS, PCPortland, OR 972131275530610
- Jon Daby, DDSPortland, OR 972131801996806
- Patricia Demasi, DDSPortland, OR 972131437278801
- Lawrence Gagnon, DMDPortland, OR 972131568461994
- Michael Gerhards, DDSPortland, OR 972131881716462
- John Holland, DDSPortland, OR 972131417969171
- Kenneth Marshack, M.D.Portland, OR 972131568562528
Common questions
What is Mark Timothy Eilers, D.M.D.'s NPI number?
Mark Timothy Eilers, D.M.D.'s National Provider Identifier (NPI) is 1811983190, issued on Sep 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Timothy Eilers, D.M.D. located?
The NPPES record lists a practice address at 1724 NE 42ND Ave, Portland, OR, 97213. Phone: (503) 281-8110. Providers update this record themselves, so call before visiting.
How can I verify Mark Timothy Eilers, D.M.D.'s license?
NPPES lists Oregon license number 8604, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Timothy Eilers, D.M.D. prescribe under Medicare Part D?
In 2024, Mark Timothy Eilers, D.M.D. had 19 Medicare Part D claims for 15 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.