NPPES file of Aug 9, 2026

Robert Madda, N.D., L.AC.

Naturopath · Portland, OR

Robert Madda, N.D., L.AC. is a naturopath with a practice address in Portland, Oregon, and NPI 1992954408, issued on Sep 9, 2008. Check the license (Oregon 1802, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1992954408
Name
Robert Madda
Credential
N.D., L.AC.
Primary taxonomy
Naturopath 175F00000X
License numbers
1802 OR
153733 OR
10268 CA
NDF 184 CA
Self-reported in NPPES; status is on the state search
Practice location
1536 NW 23RD Ave, Portland, OR 97210
Phone
(503) 347-4625
Enumerated
Sep 9, 2008
Record last updated
Dec 11, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(503) 208-7105
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest naturopath records → All 1,181 in Oregon → Look up another NPI →

Also registered at 1536 NW 23RD Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Laurel Powell, LMTPublic Health & General Preventive Medicine Physician1649501016
  2. Christian Rowell, LMTMassage Therapist1669739330
  3. Karyn Verzwyvelt, LMTMassage Therapist1922354372

Verify Robert Madda in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Oregon board licenses this profession
    Search for license 1802    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Oregon license search

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28% more Medicare Part D claims than the average naturopath in 2024

140 Medicare Part D claims for 42 beneficiaries, against an average of 109 among the 1,866 providers of this specialty who prescribed in Part D.

  1. Robert Madda140
  2. Specialty average109

Most prescribed

  1. Metformin Hcl Er28 claims
  2. Spironolactone22 claims
  3. Lisinopril19 claims
  4. Progesterone13 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.

Robert Madda among 1,181 naturopath records in Oregon

Robert Madda, N.D., L.AC. 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 2008, is newer than 26% of them.

  • NPI issued2008 · 26% of these records are older, 67% 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 updated2014 · 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

  1. Steven Bailey, N.D.Portland, OR 972101447381652
  2. Jennifer Brusewitz, N.D.Portland, OR 972101295879344
  3. Lowell Chodosh, ND, LACPortland, OR 972101477511731
  4. Sara Hart, ND, LAC, LMTPortland, OR 972101104030907
  5. Whitney Hayes, N.D., LACPortland, OR 972101619209640
  6. Stefani Hayes, N.D., LACPortland, OR 972101568772440
  7. Meghan Larivee, N.D.Portland, OR 972101861729337
  8. Jonathan Luchs, NDPortland, OR 972101417248931

Common questions

What is Robert Madda, N.D., L.AC.'s NPI number?

Robert Madda, N.D., L.AC.'s National Provider Identifier (NPI) is 1992954408, issued on Sep 9, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Robert Madda, N.D., L.AC. located?

The NPPES record lists a practice address at 1536 NW 23RD Ave, Portland, OR, 97210. Phone: (503) 347-4625. Providers update this record themselves, so call before visiting.

How can I verify Robert Madda, N.D., L.AC.'s license?

NPPES lists Oregon license number 1802, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.

How much does Robert Madda, N.D., L.AC. prescribe under Medicare Part D?

In 2024, Robert Madda, N.D., L.AC. had 140 Medicare Part D claims for 42 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.