Medicare Enrolled

Dr. Mailyn Williams, PA-C, RDMS, RVT

Physician Assistant · Seattle, WA
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
Speaking/Promotional
4311 11TH AVE NE STE 200, Seattle, WA 98105
2066164001
In practice since 2021 (5 years)
NPI: 1457925042 verify on NPPES ↗
High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Williams from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Williams? Request a correction or review of any data shown here. Provider portal →

What this data tells you about Dr. Williams

Dr. Mailyn Williams is a physician assistant in Seattle, WA, with 5 years of NPI registration. Based on federal Medicare data, Dr. Williams performed 82 Medicare services across 44 unique beneficiaries.

Between the years covered by Open Payments, Dr. Williams received a total of $210 from 3 pharmaceutical and/or device companies across 5 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in physician assistant. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Williams is High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 5 years in practice ▲ 82 Medicare services $210 industry payments

Medicare Practice Summary

Medicare Utilization ↗
82
Medicare services
Bottom 28% in WA for physician assistant
Lower Medicare volume may reflect subspecialty focus, hospital-based work, or a higher share of non-Medicare patients.
44
Unique beneficiaries
$93
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~16 Medicare services per year of practice

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
Abdominal fluid drainage with imaging guidance
Removal of fluid from the abdominal cavity using imaging technology to guide the procedure.
 51 $91 $2,725
Chest fluid aspiration with imaging guidance
This procedure involves removing fluid from the chest cavity using imaging technology to guide the needle placement.
 31 $98 $984
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.

Industry Payment Transparency

Open Payments through 2022 ↗
$210
Total received (2021-2022)
Avg $105/year across 2 years
Top 46% in WA for physician assistant
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
3
Companies
5
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →

Payment profile

Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.

Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$169 (80.5%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$41 (19.5%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2022
$169
2021
$41

Payments by company (2022)

Consulting
Speaking
Meals & Travel
Research
Medical Device Business Services, Inc.
$169
Top 3 companies account for 100.0% of 2022 payments
All-time payments by company (2021-2022) ›
Medical Device Business Services, Inc.
$169
Medtronic, Inc.
$26
Siemens Medical Solutions USA, Inc.
$14
Top 3 companies account for 100.0% of all-time payments
Associated products mentioned in payments ›
ACUSON P500 Diagnostic Ultrasound System · INTELLIS
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →

The majority of payments (80%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in physician assistant and does not inherently indicate bias, but patients may wish to be aware.

Looking for a physician assistant in Seattle?
Compare physician assistants in the Seattle area by procedure volume, costs, and industry payment transparency.
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Geographic Context

Physician assistants within 10 mi
1,468
Per 100K population
64.9
County median income
$122,148
Nearest hospital
SEATTLE CHILDREN'S HOSPITAL
0.0 mi

Data Sources

Provider Registry ✓ NPPES Weekly updates
Medicare Enrollment ✓ PECOS Monthly updates
Practice Data ✓ Medicare Util. Annual (CY lag)
Industry Payments ✓ Open Payments CY 2022
Disciplinary History — Not public N/A

This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of High. This reflects how much public data is available about a provider. How we calculate this →

Summary

Dr. Williams is a mixed practice specialist, with moderate Medicare volume, with speaking/promotional industry engagement.

This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →

Frequently Asked Questions

Is Dr. Williams experienced with abdominal fluid drainage with imaging guidance?
Based on Medicare claims data, Dr. Williams performed 51 abdominal fluid drainage with imaging guidance services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Williams receive payments from pharmaceutical companies?
Yes. Dr. Williams received a total of $210 from 3 companies across 5 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Williams's costs compare to other physician assistants in Seattle?
Dr. Williams's average Medicare payment per service is $93. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently High for Dr. Williams) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →

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About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →