William S. Treloar, DO
Emergency Medicine Physician · Roseburg, OR
William S. Treloar, DO is an emergency medicine physician with a practice address in Roseburg, Oregon, and NPI 1174594360, issued on Jan 27, 2006. Check the license (Oregon DO26167, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- William S. Treloar
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- DO26167 OR
Self-reported in NPPES; status is on the state search - Practice location
- 2700 NW Stewart Pkwy, Roseburg, OR 97470
- Phone
- (541) 677-4313
- Enumerated
- Jan 27, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (541) 677-4533
- Medicaid ID
- 026816 OR
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,079 in Oregon → Look up another NPI →
Also registered at 2700 NW Stewart Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bart Bruns, MDAnesthesiology Physician1881620839
- Deborah Carpenter, PHARMDPharmacotherapy Pharmacist1902931173
- Debra Daniels, P.A.Medical Physician Assistant1417928672
- John Dauterman, MDClinical Pathology/Laboratory Medicine Physician1861463044
- Kate Davis, RPHPharmacist1700097979
- Timothy Gladding, MDClinical Pathology/Laboratory Medicine Physician1659342830
Verify William S. Treloar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license DO26167Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
William S. Treloar among 1,079 emergency medicine physician records in Oregon
William S. Treloar, DO is one of 1,079 emergency medicine physician records with a practice address in Oregon. 77% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 59% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Oregon
There are 1,079 emergency medicine physician records in Oregon.
All 1,079 in Oregon → Every provider in Roseburg → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Peter Gowing, D.O.Roseburg, OR 974701821069899
- David Smith, MDRoseburg, OR 974701235100215
- Kate Bayliss, MD, PHDRoseburg, OR 974711194229146
- R Harding, MDRoseburg, OR 974711780616243
- Daniel Hull, M.D.Roseburg, OR 974711295810539
- Charles Lange, M.D.Roseburg, OR 974711881985802
- Adam Mankowski, MDRoseburg, OR 974711770996720
- Tami Marriott, MDRoseburg, OR 974711134182843
Common questions
What is William S. Treloar, DO's NPI number?
William S. Treloar, DO's National Provider Identifier (NPI) is 1174594360, issued on Jan 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William S. Treloar, DO located?
The NPPES record lists a practice address at 2700 NW Stewart Pkwy, Roseburg, OR, 97470. Phone: (541) 677-4313. Providers update this record themselves, so call before visiting.
How can I verify William S. Treloar, DO's license?
NPPES lists Oregon license number DO26167, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is William S. Treloar, DO's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.