2026 NPPES data Rheumatology Physician NPI 1235660424
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TRENT DONDERO

Rheumatology Physician in SEATTLE, Washington. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
81
Medicare Part D claims · 12 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: TRENT DONDERO is a Rheumatology Physician ([object Object]) practicing in SEATTLE, Washington with a Medicare Part D prescribing footprint of 81 claims across 12 beneficiaries — 15% brand-name prescribing .

What stands out: TRENT DONDERO filed 81 Medicare Part D claims in 2023 across SEATTLE, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

TRENT DONDERO practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

TRENT DONDERO at a glance

Quality data not reported

NPI registry status

Active

Issued 03/21/2017

NPI 1235660424

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

81 96% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

Specialty distribution in Washington

How Rheumatology Physician compares to other specialties among Washington providers

Washington providers

Rheumatology Physician share within Washington

1. Rheumatology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Rheumatology Physician share within Washington

Specialty board-certification context

Estimated specialty board-certified rate — Rheumatology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Rheumatology Physician ABMS/AOA estimate

Est. board-certified rate (Rheumatology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Rheumatology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

TRENT DONDERO is a Rheumatology Physician provider practicing in SEATTLE, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1235660424. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

TRENT DONDERO appears in the CMS NPPES registry as a Rheumatology Physician provider at 1660 S COLUMBIAN WAY, SEATTLE, WA, 98108, with a listed phone of (206) 762-1010. NPI 1235660424 was issued on 03/21/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DONDERO most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 81 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $82K in drug spend, split 15% brand-name and 85% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1660 S COLUMBIAN WAY
SEATTLE, WA 98108

Provider Details

NPI 1235660424
Specialty Rheumatology Physician
Gender Male
NPI Issued 03/21/2017

License & disciplinary context — Washington WMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~34K Washington medical licensees in 2023 — they are NOT specific to TRENT DONDERO. To verify TRENT DONDERO's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

TRENT DONDERO — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 81 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

81
Total Claims
$82K
Total Drug Cost
12
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
155
Total Day Supply
4,394
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$80K
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
70.4 years
Avg HCC Risk Score
1.78

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Methotrexate
Methotrexate Sodium
16
Diclofenac Sodium
15
Hydroxychloroquine Sulfate
14
Enbrel Sureclick
Etanercept
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Rheumatology Physician Overview

How TRENT DONDERO fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

TRENT DONDERO's 81 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Washington

Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as DONDERO.

Compare Rheumatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is TRENT DONDERO's specialty?
TRENT DONDERO specializes in Rheumatology Physician and practices in SEATTLE, Washington.
How much does TRENT DONDERO prescribe under Medicare Part D?
In 2023, TRENT DONDERO wrote 81 Medicare Part D claims totaling $82K in drug costs for 12 beneficiaries.
Where is TRENT DONDERO located?
TRENT DONDERO is located at 1660 S COLUMBIAN WAY, SEATTLE, WA, 98108. Phone: (206) 762-1010.
What is TRENT DONDERO's NPI number?
TRENT DONDERO's National Provider Identifier (NPI) is 1235660424, issued on 03/21/2017.
Does TRENT DONDERO prescribe more brand-name or generic drugs?
TRENT DONDERO's prescribing is 15% brand-name and 85% generic drugs by claim count, with $80K in brand drug costs.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does TRENT DONDERO prescribe most often?
Based on 2023 Medicare Part D data, TRENT DONDERO's most frequently prescribed drugs include Methotrexate, Diclofenac Sodium, Hydroxychloroquine Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TRENT DONDERO accept Medicare?
TRENT DONDERO appears in CMS Medicare data with 81 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TRENT DONDERO's credentials?
TRENT DONDERO's NPI is 1235660424. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology