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WILLIAM PAUL MAIER MD
NPI 1790735561
Internal Medicine - Rheumatology in Eugene, OR

Active since May 11, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
633 E 11TH AVE, EUGENE, OR 97401(541) 434-5585(541) 345-2821 Get Directions Write a Review

NPPES record last updated: September 15, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About William Paul Maier Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM PAUL MAIER MD (NPI 1790735561) is an individual rheumatology provider in Eugene, Oregon, licensed in Oregon (MD17498) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy Medical Center, and is a graduate of University Of Arizona College Of Medicine (1980).

NPPES Registry Identity

NPI1790735561
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameWILLIAM PAUL MAIERCredential: MD
Location Address633 E 11TH AVEEugene, OR 97401-3602
Mailing Address633 E 11th AveEugene, OR 97401-3602 · (541) 434-5585 · Fax (541) 345-2821
Phone(541) 434-5585
Fax(541) 345-2821
Sole ProprietorNo
Medical School CMSUniversity Of Arizona College Of MedicineGraduated 1980
Enumeration DateMay 11, 2006
Last NPPES UpdateSeptember 15, 2010
✔ NPI 1790735561 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in OR · MD17498
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
633 E 11TH AVE, Eugene, OR 97401
Open in Google Maps ↗

Other Identifiers 4

Other460485850OR · Wm P Maier Md Pc Tax Id
Medicare ID-Type Unspecified113909OR
Medicare UPIND30120OR
Medicaid028683OR

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Kaiser Permanente, Moda Health Plan, Inc. and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Paul Maier Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID42204141
PECOS Enrollment IDI20051205000855
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show William Maier reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

William P Maier MD PC
Same address
Rheumatology
633 E 11TH AVE
Eugene, OR 97401
  • Reassigned Medicare billing, Oregon enrollment
  • 3 clinicians in this Medicare group
NPI 1710107016 (541) 434-5585

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
1,080 services14 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
333 services195 patients
Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle 96401
This procedure involves giving anti-cancer drugs, which don't contain hormones, into the muscle or under the skin. These drugs help to stop the growth of cancer cells. The process is usually quick and done by a healthcare professional.
87 services28 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
60 services52 patients
Administration of chemotherapy into vein, 1 hour or less 96413
Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.
44 services30 patients
Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
41 services13 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercy Medical Center

Acute Care Hospitals · Roseburg, OR
4/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number380027
Location2700 NW Stewart ParkwayRoseburg, OR 97471 · Douglas County
Emergency services Birthing friendly

Sacred Heart Medical Center - Riverbend

Acute Care Hospitals · Springfield, OR
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380102
Location3333 Riverbend DriveSpringfield, OR 97477 · Lane County
Emergency services Birthing friendly

Peacehealth Cottage Grove Community Medical Center

Critical Access Hospitals · Cottage Grove, OR
OwnershipVoluntary non-profit - Private
CMS Certification Number381301
Location1515 Village DriveCottage Grove, OR 97424 · Lane County
Emergency services

Peace Harbor Medical Center

Critical Access Hospitals · Florence, OR
OwnershipVoluntary non-profit - Church
CMS Certification Number381316
Location400 9th StreetFlorence, OR 97439 · Lane County
Emergency services Birthing friendly

Curry General Hospital

Critical Access Hospitals · Gold Beach, OR
OwnershipGovernment - Hospital District or Authority
CMS Certification Number381322
Location94220 Fourth StreetGold Beach, OR 97444 · Curry County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.25 typical visit price
range $54.96 – $166.64
Typical copayment $31.56 (range $13.74 – $41.66)
Most-billed visit code 99204
Established Patient
$97.16 typical visit price
range $17.68 – $136.19
Typical copayment $24.29 (range $4.42 – $34.04)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality98.71
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

WILLIAM P MAIER MD PC
Internal Medicine (Rheumatology)
633 E 11TH AVE
EUGENE, OR 97401
Lane County (541) 434-5585

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Maier's NPI number?

The NPI number for William Maier is 1790735561. It was assigned to this individual provider in the NPPES registry on May 11, 2006.

Where is William Maier located?

William Maier practices at 633 E 11th Ave, Eugene, OR 97401. The listed phone number is (541) 434-5585.

What is William Maier's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is William Maier enrolled in Medicare?

Yes. William Maier is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for William Maier's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Maier reassigns Medicare benefits to William P Maier MD PC (Eugene, OR). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Maier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Maier accept?

Health plans from BridgeSpan Health Company, Kaiser Permanente, Moda Health Plan, Inc., PacificSource Health Plans and Providence Health Plan and 1 other insurer list William Maier as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Maier affiliated with any hospitals?

According to CMS data, William Maier is affiliated with Mercy Medical Center, Sacred Heart Medical Center - Riverbend, Peacehealth Cottage Grove Community Medical Center, Peace Harbor Medical Center and Curry General Hospital.

When was this NPI record last updated?

The NPPES record for William Maier was last updated on September 15, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.