Timothy Edwards Knowlton, MD
Emergency Medicine Physician · Portland, OR
Timothy Edwards Knowlton, MD is an emergency medicine physician with a practice address in Portland, Oregon, and NPI 1417697061, issued on Mar 31, 2022. Check the license (Oregon MD222467, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Timothy Edwards Knowlton
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD222467 OR
Self-reported in NPPES; status is on the state search - Practice location
- Ohsu, Portland, OR 97239
- Phone
- (503) 494-8211
- Enumerated
- Mar 31, 2022
- Record last updated
- May 19, 2025
- Medicare enrollment
- Enrolled (PECOS I20250611002164); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2022
- Entity
- Type 1 · individual
Also registered at Ohsu
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Byrd, MD PHDStudent in an Organized Health Care Education/Training Program1356801757
- Andrew Cowan, MDStudent in an Organized Health Care Education/Training Program1174264386
- Sarah Friedland, MDStudent in an Organized Health Care Education/Training Program1285337824
- Sean Hickey, MDEmergency Medicine Physician1104313097
- Elham Karamooz, M.D.Pulmonary Disease Physician1962645549
- Rebecca Marshall, M.D.Child & Adolescent Psychiatry Physician1477787646
Verify Timothy Edwards Knowlton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD222467Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average emergency medicine physician in 2024
44 Medicare Part D claims for 36 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through 2 group practices
- Northwest Acute Care Specialists PCTualatin, OR
- Silverton HealthSilverton, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Emergency Medicine Physician providers in Oregon
There are 1,079 emergency medicine physician records in Oregon.
Other emergency medicine physician records in Oregon
- Richard Abraham, MDEugene, OR1457396442
- Andrew Adamski, MDRedmond, OR1306874011
- Ulrika Agnew, MDPortland, OR1598296394
- Anna Akita, M.D.Medford, OR1942521372
- Darren Alexander, MDPortland, OR1487678256
- Kevin Allan, M.D.Springfield, OR1023549466
- Nina Allan, MDAlbany, OR1184899221
- McKaila Allcorn, DOLincoln City, OR1700197076
- Christopher Allen, MDOregon City, OR1467915843
- Jacoby Allen, D.O.Redmond, OR1396068748
Common questions
What is Timothy Edwards Knowlton, MD's NPI number?
Timothy Edwards Knowlton, MD's National Provider Identifier (NPI) is 1417697061, issued on Mar 31, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Edwards Knowlton, MD located?
The NPPES record lists a practice address at Ohsu, Portland, OR, 97239. Phone: (503) 494-8211. Providers update this record themselves, so call before visiting.
How can I verify Timothy Edwards Knowlton, MD's license?
NPPES lists Oregon license number MD222467, 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.
How much does Timothy Edwards Knowlton, MD prescribe under Medicare Part D?
In 2024, Timothy Edwards Knowlton, MD had 44 Medicare Part D claims for 36 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.