NPPES file of Aug 9, 2026

Andrew D. Nelson, D.O.

Orthopaedic Surgery Physician · Corvallis, OR

Andrew D. Nelson, D.O. is an orthopaedic surgery physician with a practice address in Corvallis, Oregon, and NPI 1083900419, issued on Jun 23, 2011. Check the license (Oregon PG155829, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083900419
Name
Andrew D. Nelson
Credential
D.O.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
PG155829 OR
Self-reported in NPPES; status is on the state search
Practice location
3600 NW Samaritan Dr, Corvallis, OR 97330
Phone
(541) 768-4906
Enumerated
Jun 23, 2011
Record last updated
Jul 9, 2026
Medicare enrollment
Enrolled (PECOS I20181022001053); accepts Medicare assignment
Medical or professional school
Western University Of Health Sciences College Of Dental Med, 2011
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 3600 NW Samaritan Dr

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

  1. Aamir Abbas, DOAnesthesiology Physician1861818957
  2. Prathyush Adapa, DOPsychiatry Physician1487346946
  3. Adetola Adebola, MDInternal Medicine Physician1124602958
  4. Bikash AdhikariPsychiatry Physician1225772189
  5. Edosasere Amayo, MDOrthopaedic Surgery Physician1467398859
  6. Levana Amrock, MDAnesthesiology Physician1699160184

Verify Andrew D. Nelson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license PG155829
    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
Open the Oregon license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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71% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

102 Medicare Part D claims for 58 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 38 claims were for opioids.

  1. Andrew Nelson102
  2. Specialty average346

Most prescribed

  1. Meloxicam35 claims
  2. Hydrocodone-Acetaminophen15 claims
  3. Oxycodone-Acetaminophen15 claims
  4. Ondansetron Odt12 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score99.0
  2. Costout of 100 · 30%88.6
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Silverton HealthSilverton, OR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Andrew D. Nelson among 335 orthopaedic surgery physician records in Oregon

Andrew D. Nelson, D.O. is one of 335 orthopaedic surgery physician records with a practice address in Oregon. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 79% of them.

  • NPI issued2011 · 79% of these records are older, 19% newer
  • In a Medicare fileYes · 61% of these records are
  • In the CMS Doctors and Clinicians fileYes · 49% of these records are
  • Graduated2011 · median 2002 among the 165 with a school on file
  • Record last updated2026 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Oregon

There are 335 orthopaedic surgery physician records in Oregon.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Edward Bynum, D.O.Corvallis, OR 973301528017563
  2. John Erkkila, M.D.Corvallis, OR 973301467401414
  3. Jonathan Evans, D.O.Corvallis, OR 973301760517478
  4. Jacqueline Krumrey, MDCorvallis, OR 973301366411241
  5. Jason Lin, M.D.Corvallis, OR 973301902028111
  6. Leon Malkin, MDCorvallis, OR 973301134142649
  7. Scott McAtee, M.D.Corvallis, OR 973301255381141
  8. Kit McCalla, D.O., MBACorvallis, OR 973301487626313

Common questions

What is Andrew D. Nelson, D.O.'s NPI number?

Andrew D. Nelson, D.O.'s National Provider Identifier (NPI) is 1083900419, issued on Jun 23, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Andrew D. Nelson, D.O. located?

The NPPES record lists a practice address at 3600 NW Samaritan Dr, Corvallis, OR, 97330. Phone: (541) 768-4906. Providers update this record themselves, so call before visiting.

How can I verify Andrew D. Nelson, D.O.'s license?

NPPES lists Oregon license number PG155829, 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 Andrew D. Nelson, D.O. prescribe under Medicare Part D?

In 2024, Andrew D. Nelson, D.O. had 102 Medicare Part D claims for 58 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

What is Andrew D. Nelson, D.O.'s MIPS final score?

The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.