NPPES file of Aug 9, 2026

William Tristram Arscott, MD

Radiation Oncology Physician · Tigard, OR

William Tristram Arscott, MD is a radiation oncology physician with a practice address in Tigard, Oregon, and NPI 1831509926, issued on Apr 29, 2014. Check the license (Oregon MD192304, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831509926
Name
William Tristram Arscott
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License numbers
MD192304 OR
60954834 WA
Self-reported in NPPES; status is on the state search
Practice location
12123 SW 69TH Ave, Tigard, OR 97223
Phone
(971) 708-7600
Enumerated
Apr 29, 2014
Record last updated
May 9, 2025
Fax
(971) 371-5230
Medicare enrollment
Enrolled (PECOS I20190815000696); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 12123 SW 69TH Ave

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

  1. Marisa Adlesich, PA-CPhysician Assistant1679047708
  2. Rebecca Amador, MSN, AGPCNP-BCNurse Practitioner1235413840
  3. Ariel Black, LCSW, LICSWClinical Social Worker1841144532
  4. Edward Chang, M.D.Hematology & Oncology Physician1376546309
  5. Michele Dickson, ARNPFamily Nurse Practitioner1619957990
  6. Kathleen Dunham, M.D.Surgical Oncology Physician1194040139

Verify William Tristram Arscott in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license MD192304
    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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37% more Medicare Part D claims than the average radiation oncology physician in 2024

183 Medicare Part D claims for 76 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. William Arscott183
  2. Specialty average134

Most prescribed

  1. Tamsulosin Hcl37 claims
  2. Dexamethasone32 claims
  3. Memantine Hcl14 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: $180.55

2 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Arscott$180.55
  2. Specialty average$1,897.85

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Northwest Cancer Specialists PCVancouver, WA

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

William Tristram Arscott among 115 radiation oncology physician records in Oregon

William Tristram Arscott, MD is one of 115 radiation oncology physician records with a practice address in Oregon. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 74% of them.

  • NPI issued2014 · 74% of these records are older, 22% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2014 · median 2006 among the 85 with a school on file
  • Record last updated2025 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in Oregon

There are 115 radiation oncology physician records in Oregon.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. John Schuler, M.D.Tigard, OR 972231134485766
  2. Bradley Ackerson, MDPortland, OR 972251447746326
  3. Sophia Bornstein, M.D. PH.D.Portland, OR 972251639498561
  4. Re-I Chin, MDPortland, OR 972251215421987
  5. David Gannett, MDPortland, OR 972251467454165
  6. Eric Hansen, MDPortland, OR 972251144375148
  7. Brian Lee, M.D.Portland, OR 972251750503132
  8. Jeannie Louie, MDPortland, OR 972251730171117

Common questions

What is William Tristram Arscott, MD's NPI number?

William Tristram Arscott, MD's National Provider Identifier (NPI) is 1831509926, issued on Apr 29, 2014. An NPI identifies a provider in billing; it is not a license.

Where is William Tristram Arscott, MD located?

The NPPES record lists a practice address at 12123 SW 69TH Ave, Tigard, OR, 97223. Phone: (971) 708-7600. Providers update this record themselves, so call before visiting.

How can I verify William Tristram Arscott, MD's license?

NPPES lists Oregon license number MD192304, 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 William Tristram Arscott, MD prescribe under Medicare Part D?

In 2024, William Tristram Arscott, MD had 183 Medicare Part D claims for 76 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.