Mark Leroy Harris, D.M.D.
Dentist · La Grande, OR
Mark Leroy Harris, D.M.D. is a dentist with a practice address in La Grande, Oregon, and NPI 1184622797, issued on Jul 8, 2005. Check the license (Oregon 6922, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Leroy Harris
- Credential
- D.M.D.
- Primary taxonomy
- Dentist 122300000X
- License number
- 6922 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1809 3RD St, La Grande, OR 97850
- Phone
- (541) 963-0924
- Enumerated
- Jul 8, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (541) 962-0924
- Entity
- Type 1 · individual
Also registered at 1809 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lynn Harris, D.M.D.Dentist1528066065
- Lewis Wright, DMDDentist1376460824
Verify Mark Leroy Harris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license 6922Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% fewer Medicare Part D claims than the average dentist in 2024
73 Medicare Part D claims for 44 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 26 claims were for opioids.
Most prescribed
- Amoxicillin25 claims
- Acetaminophen-Codeine18 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 La Grande
They are 7 of the 557 NPPES records with a practice address in La Grande, and 1,246 dentist records in Oregon.
All 7 in La Grande → All 1,246 in Oregon → Every provider in La Grande →
Other dentist records in Oregon
- Tamara Abbett, D.D.S.Medford, OR1972504710
- Kyoko Abe, D.M.DPortland, OR1629142641
- Daniel Adair, D.D.S.Salem, OR1609287143
- Christopher Adams, D.D.S.Roseburg, OR1487886321
- Kathleene Adams, DMDPortland, OR1063582252
- Ranier Adarve, DMDPortland, OR1982789848
- Priyadarshini AgrawalNorth Bend, OR1912354689
- Azma Ahmed, DDSPortland, OR1417341983
- Lee Albrecht, DMDSalem, OR1639338130
- Roman Alexandroff, D.M.D.Warrenton, OR1811188824
Common questions
What is Mark Leroy Harris, D.M.D.'s NPI number?
Mark Leroy Harris, D.M.D.'s National Provider Identifier (NPI) is 1184622797, issued on Jul 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Leroy Harris, D.M.D. located?
The NPPES record lists a practice address at 1809 3RD St, La Grande, OR, 97850. Phone: (541) 963-0924. Providers update this record themselves, so call before visiting.
How can I verify Mark Leroy Harris, D.M.D.'s license?
NPPES lists Oregon license number 6922, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Leroy Harris, D.M.D. prescribe under Medicare Part D?
In 2024, Mark Leroy Harris, D.M.D. had 73 Medicare Part D claims for 44 beneficiaries; the average among dentist prescribers was 86. 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.