NPPES file of Aug 9, 2026

William Paul Maier, MD

Rheumatology Physician · Eugene, OR

William Paul Maier, MD is a rheumatology physician with a practice address in Eugene, Oregon, and NPI 1790735561, issued on May 11, 2006. Check the license (Oregon MD17498, 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
1790735561
Name
William Paul Maier
Credential
MD
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
MD17498 OR
Self-reported in NPPES; status is on the state search
Practice location
633 E 11TH Ave, Eugene, OR 97401
Phone
(541) 434-5585
Enumerated
May 11, 2006
Record last updated
Sep 15, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(541) 345-2821
Medicaid ID
028683 OR
Medicare enrollment
Enrolled (PECOS I20051205000855); accepts Medicare assignment
Medical or professional school
University Of Arizona College Of Medicine, 1980
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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Verify William Paul Maier in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license MD17498
    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

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17% fewer Medicare Part D claims than the average rheumatology physician in 2024

1,642 Medicare Part D claims for 300 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 53 claims were for opioids.

  1. William Maier1,642
  2. Specialty average1,978

Most prescribed

  1. Methotrexate335 claims
  2. Prednisone293 claims
  3. Hydroxychloroquine Sulfate96 claims
  4. Alendronate Sodium54 claims
  5. Allopurinol41 claims
  6. Mycophenolate Mofetil41 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.

No measured MIPS final score for 2023

CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.

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

Industry payments in 2024: $785.28

37 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Maier$785.28
  2. Specialty average$8,538.33

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

William Paul Maier among 101 rheumatology physician records in Oregon

William Paul Maier, MD is one of 101 rheumatology physician records with a practice address in Oregon. 73% 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 9% of them.

  • NPI issued2006 · 9% of these records are older, 50% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1980 · median 2004 among the 65 with a school on file
  • Record last updated2010 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Rheumatology Physician providers in Oregon

There are 101 rheumatology physician records in Oregon.

The 8 rheumatology physician records with the nearest ZIP codes

  1. Simona Braun, MDEugene, OR 974011972677045
  2. Sarah CassellEugene, OR 974011093724247
  3. Sidney Cassell, MDEugene, OR 974011376614107
  4. Norman Hudson, MDEugene, OR 974011053427666
  5. Hesham Elmergawy, M.DEugene, OR 974021811246176
  6. Diman Lamichhane, MDEugene, OR 974021700067360
  7. Gary Wheeler, MDRoseburg, OR 974711790767234
  8. Mary Abraham, MDCorvallis, OR 973301073876199

Common questions

What is William Paul Maier, MD's NPI number?

William Paul Maier, MD's National Provider Identifier (NPI) is 1790735561, issued on May 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Paul Maier, MD located?

The NPPES record lists a practice address at 633 E 11TH Ave, Eugene, OR, 97401. Phone: (541) 434-5585. Providers update this record themselves, so call before visiting.

How can I verify William Paul Maier, MD's license?

NPPES lists Oregon license number MD17498, 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 Paul Maier, MD prescribe under Medicare Part D?

In 2024, William Paul Maier, MD had 1,642 Medicare Part D claims for 300 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.

What is William Paul Maier, MD's MIPS final score?

CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.

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.