Matthew Daniel Knudsen, ND
Naturopath · Portland, OR
Matthew Daniel Knudsen, ND is a naturopath with a practice address in Portland, Oregon, and NPI 1881185924, issued on May 24, 2018. Check the license with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew Daniel Knudsen
- Credential
- ND
- Primary taxonomy
- Naturopath 175F00000X
- Practice location
- 1330 SE Cesar Estrada Chavez Blvd, Portland, OR 97214
- Phone
- (503) 232-1100
- Enumerated
- May 24, 2018
- Record last updated
- Jan 22, 2025
- Fax
- (503) 232-7751
- Entity
- Type 1 · individual
8 nearest naturopath records → All 1,181 in Oregon → Look up another NPI →
Also registered at 1330 SE Cesar Estrada Chavez Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alison Wilder, D.C.Chiropractor1710725502
Verify Matthew Daniel Knudsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average naturopath in 2024
143 Medicare Part D claims for 20 beneficiaries, against an average of 109 among the 1,866 providers of this specialty who prescribed in Part D.
Most prescribed
- Dextroamphetamine-Amphetamine13 claims
- Gabapentin12 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.
Matthew Daniel Knudsen among 1,181 naturopath records in Oregon
Matthew Daniel Knudsen, ND is one of 1,181 naturopath records with a practice address in Oregon. 37% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 74% of them.
- NPI issued2018 · 74% of these records are older, 21% newer
- In a Medicare fileYes · 37% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2025 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 175F00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
687 naturopath records list a practice address in Portland
They are 687 of the 42,088 NPPES records with a practice address in Portland, and 1,181 naturopath records in Oregon.
All 1,181 in Oregon → Every provider in Portland → Naturopath nationwide →
The 8 naturopath records with the nearest ZIP codes
- Mona Bhalla, N.D.Portland, OR 972141740360536
- Ann Holland, N.D., MSOM, L. AC.Portland, OR 972141760540710
- Amy Johnson, N.D.Portland, OR 972141851462808
- Julie Kahn, ND, LAC, LMTPortland, OR 972141174564769
- Stephanie Kaplan, N.D.Portland, OR 972141881737823
- Martin Milner, N.D.Portland, OR 972141720039621
- Gregory Nigh, ND, LACPortland, OR 972141841224615
- Sara Ohgushi, N.D.Portland, OR 972141700812302
Common questions
What is Matthew Daniel Knudsen, ND's NPI number?
Matthew Daniel Knudsen, ND's National Provider Identifier (NPI) is 1881185924, issued on May 24, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Daniel Knudsen, ND located?
The NPPES record lists a practice address at 1330 SE Cesar Estrada Chavez Blvd, Portland, OR, 97214. Phone: (503) 232-1100. Providers update this record themselves, so call before visiting.
How can I verify Matthew Daniel Knudsen, ND's license?
Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Matthew Daniel Knudsen, ND prescribe under Medicare Part D?
In 2024, Matthew Daniel Knudsen, ND had 143 Medicare Part D claims for 20 beneficiaries; the average among naturopath prescribers was 109. 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.