Jeffrey James Knowles, MD
Psychiatry Physician · Salem, OR
Jeffrey James Knowles, MD is a psychiatry physician with a practice address in Salem, Oregon, and NPI 1376618694, issued on Nov 21, 2006. Check the license (Oregon MD22536, as entered in NPPES) on the Oregon Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Jeffrey James Knowles
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- MD22536 OR
Self-reported in NPPES; status is on the state search - Practice location
- 2600 Center St NE, Salem, OR 97301
- Phone
- (503) 945-2800
- Enumerated
- Nov 21, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 764 in Oregon → Look up another NPI →
Also registered at 2600 Center St NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cydreese Aebi, PHD, RPHPharmacist1235361700
- Vimal AgaGeriatric Psychiatry Physician1902900137
- Murphy AlafoginisCounselor1912737255
- Rachael Alvick, PSYDClinical Psychologist1386178556
- Mikaela Anderson, PHARMD, RPH, MBAPharmacist1851942353
- Joshua AndreRegistered Dietitian1437782893
Verify Jeffrey James Knowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD22536Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Jeffrey James Knowles among 764 psychiatry physician records in Oregon
Jeffrey James Knowles, MD is one of 764 psychiatry physician records with a practice address in Oregon. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 57% newer
- In a Medicare fileNo · 59% of these records are
- In the CMS Doctors and Clinicians fileNo · 39% of these records are
- Record last updated2007 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Oregon
There are 764 psychiatry physician records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 764 in Oregon → Every provider in Salem → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Ulista Brooks, MDSalem, OR 973011447350517
- Roselee Cain, M.D.Salem, OR 973011568537439
- Daniel Costa, M.D.Salem, OR 973011720093255
- Denis Fiallos Montero, MDSalem, OR 973011457432783
- Lorraine Linder-Skach, MDSalem, OR 973011912001140
- Beverly Matthews-Brylski, MDSalem, OR 973011750485983
- Richard Mead, MDSalem, OR 973011144395831
- John Meyer, MDSalem, OR 973011205930435
Common questions
What is Jeffrey James Knowles, MD's NPI number?
Jeffrey James Knowles, MD's National Provider Identifier (NPI) is 1376618694, issued on Nov 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey James Knowles, MD located?
The NPPES record lists a practice address at 2600 Center St NE, Salem, OR, 97301. Phone: (503) 945-2800. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey James Knowles, MD's license?
NPPES lists Oregon license number MD22536, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.