James J. Knackstedt, M. D.
Specialist · Eugene, OR
James J. Knackstedt, M. D. is a specialist with a practice address in Eugene, Oregon, and NPI 1235247784, issued on Aug 25, 2006. Check the license (Oregon MD14759, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James J. Knackstedt
- Credential
- M. D.
- Primary taxonomy
- Specialist 174400000X
- License number
- MD14759 OR
Self-reported in NPPES; status is on the state search - Practice location
- 995 Willagillespie RD Ste 300C, Eugene, OR 97401
- Phone
- (541) 302-1420
- Enumerated
- Aug 25, 2006
- Record last updated
- Dec 20, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (541) 485-7881
- Medicaid ID
- 180356 OR
- Entity
- Type 1 · individual
8 nearest specialist records → All 1,085 in Oregon → Look up another NPI →
Verify James J. Knackstedt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license MD14759Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average specialist in 2024
867 Medicare Part D claims for 241 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 17 claims were for opioids.
Most prescribed
- Fluticasone Propionate125 claims
- Ipratropium Bromide104 claims
- Pentoxifylline47 claims
- Amoxicillin-Clavulanate Potass42 claims
- Pregabalin41 claims
- Mometasone Furoate39 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: $186.60
3 payments; by number, the most common kind was food and beverage; the largest payer was Hologic Sales and Service, LLC. The 5,844 providers of this specialty with any payment received $4,760.79 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.
James J. Knackstedt among 1,085 specialist records in Oregon
James J. Knackstedt, M. D. is one of 1,085 specialist records with a practice address in Oregon. 9% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 77% newer
- In a Medicare fileYes · 9% of these records are
- In the CMS Doctors and Clinicians fileNo · 6% of these records are
- Record last updated2010 · 85% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
89 specialist records list a practice address in Eugene
They are 89 of the 8,239 NPPES records with a practice address in Eugene, and 1,085 specialist records in Oregon.
All 1,085 in Oregon → Every provider in Eugene → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- William Gutheim, M.D.Eugene, OR 974011346245883
- John Hunts, MD PHDEugene, OR 974011275530297
- Dainis Irbe, M.D.Eugene, OR 974011013979665
- Reed Kratka, M.D.Eugene, OR 974011396740841
- Victor Lin, M.D.Eugene, OR 974011487613261
- Martha Macritchie, M.D.Eugene, OR 974011225097439
- Kiumars Movassaghi, MEDICAL DOCTOREugene, OR 974011306841275
- Thomas Onstad, M.D.Eugene, OR 974011639155773
Common questions
What is James J. Knackstedt, M. D.'s NPI number?
James J. Knackstedt, M. D.'s National Provider Identifier (NPI) is 1235247784, issued on Aug 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James J. Knackstedt, M. D. located?
The NPPES record lists a practice address at 995 Willagillespie RD Ste 300C, Eugene, OR, 97401. Phone: (541) 302-1420. Providers update this record themselves, so call before visiting.
How can I verify James J. Knackstedt, M. D.'s license?
NPPES lists Oregon license number MD14759, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does James J. Knackstedt, M. D. prescribe under Medicare Part D?
In 2024, James J. Knackstedt, M. D. had 867 Medicare Part D claims for 241 beneficiaries; the average among specialist prescribers was 1,380. 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.