Dr. Ellen Lyman Thomason Derrick, MD
- Medicare services, 2024
- 108
- Medicare patients, 2024
- 35
- Part D claims, 2024
- 30
- Hospital affiliations
- 1
- Industry payments
- $1,819
- Practice address
- 21601 76th Avenue West, Edmonds, WA 98026
- Practice phone
- Call (425) 640-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Derrick's professional email, personal email and mobile number
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Dr. Ellen Lyman Thomason Derrick is a vascular surgeon in Edmonds, Washington
Dr. Derrick practices at Providence Swedish Edmonds Campus in Edmonds, Washington, part of Providence Health & Services.
Dr. Derrick's NPI, 1659480630, was assigned on August 30, 2006. Dr. Derrick holds Washington license MD00045873.
- NPI
- 1659480630NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789750076
- NPI enumeration date
- August 30, 2006
- NPI status
- Active
- Practice phone
- (425) 640-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ellen Lyman Thomason Derrick practices at Providence Swedish Edmonds Campus in Edmonds, Washington
Dr. Derrick's primary practice is Providence Swedish Edmonds Campus, at 21601 76th Avenue West, Edmonds, WA 98026 in Snohomish County. The practice phone is (425) 640-4000.
- Providence Swedish Edmonds Campus21601 76th Avenue West, Edmonds, WA 98026 · Snohomish CountyPhone(425) 640-4000
Source: Dmand AI Affiliation Data
Dr. Ellen Lyman Thomason Derrick is affiliated with 2 sites of care
Dr. Derrick's primary practice is Providence Swedish Edmonds Campus in Edmonds, Washington, part of Providence Health & Services. Dmand AI also links Dr. Derrick to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ellen Lyman Thomason Derrick's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Derrick practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Swedish Edmonds Campus | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ellen Lyman Thomason Derrick is one of 112 vascular surgeons in Washington
Vascular surgery is Dr. Derrick's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Derrick is licensed in Washington.
Specialties and state licenses
- Vascular surgery, WashingtonPrimary
Vascular surgeons near Dr. Derrick
Counts of vascular surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ellen Lyman Thomason Derrick billed Medicare for 108 services in 2024
CMS data shows 108 Medicare services from Dr. Derrick across 4 procedure codes in 2024, for 35 Medicare patients. Medicare paid $36,470 for them. Every service was in an office.
Dr. Derrick's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 682024: 629%
- Surgery
- 2023: 172024: 3076%
- Tests and treatments
- 2023: 432024: 1663%
Dr. Derrick compared with the Washington median for vascular surgeons, 2024
- Dr. Derrick
- Washington median
- Medicare services
- 108vs 51079% below
- Medicare patients
- 35vs 38791% below
- Part D claims
- 15vs 4365% below
Medians across 113 vascular surgeons in Washington with Dmand AI profiles that report each measure.
Dr. Derrick's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ellen Lyman Thomason Derrick treated 35 Medicare patients in 2024, average age 73
CMS counts 35 Medicare patients who saw Dr. Derrick in 2024. The largest group is 65 to 74, with 20 patients. 57% of them have arthritis, and 57% have high cholesterol. Their average risk score is 0.67, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Derrick's median patient age at 52, with 89% women.
Dr. Derrick's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Derrick's Medicare patients, 2024
- Arthritis57%
- High cholesterol57%
- High blood pressure34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Derrick's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women89%
- Men11%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ellen Lyman Thomason Derrick wrote 30 Medicare Part D claims in 2024
In 2024, Dr. Derrick wrote 30 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $12 in total drug cost.
Dr. Derrick's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Derrick's Part D claims, 2024
- Opioids50%15 of 30 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ellen Lyman Thomason Derrick ranks in the 65th percentile for varicose vein removal in Medicare
CMS counts 30 procedures of varicose vein removal by Dr. Derrick, more than 65% of the clinicians it reports for that procedure.
Where Dr. Derrick ranks in Medicare procedure volume
- Varicose vein removal
- 65th percentile30 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Source: Doctors and Clinicians Utilization Data (CMS)
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Dr. Ellen Lyman Thomason Derrick received $1,819 in industry payments from 2016 to 2024
CMS Open Payments shows 39 general payments to Dr. Derrick from 11 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 64% of the total. Medtronic Vascular, Inc. paid the most, $1,162.
General payments to Dr. Derrick by program year, 2016 to 2024
General payments to Dr. Derrick by kind, 2016 to 2024
- Food and beverage$1,17064%
- Travel and lodging$64936%
Companies that paid Dr. Derrick the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ellen Lyman Thomason Derrick's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ellen Lyman Thomason Derrick
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ellen Lyman Thomason Derrick's NPI number?
Dr. Ellen Lyman Thomason Derrick's NPI number is 1659480630. It was assigned on August 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ellen Lyman Thomason Derrick?
Dr. Ellen Lyman Thomason Derrick is a vascular surgeon in Edmonds, Washington. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. Ellen Lyman Thomason Derrick practice?
Dr. Derrick practices at 21601 76th Avenue West, Edmonds, WA 98026. Dr. Derrick's primary practice is Providence Swedish Edmonds Campus in Edmonds, Washington, part of Providence Health & Services. Dmand AI also links Dr. Derrick to 1 physician office.
What is Dr. Ellen Lyman Thomason Derrick's office phone number?
The practice phone on file for Dr. Derrick is (425) 640-4000.
What is Dr. Ellen Lyman Thomason Derrick's medical license number?
Dr. Derrick holds Washington license MD00045873.
Which hospitals is Dr. Ellen Lyman Thomason Derrick affiliated with?
Dr. Derrick practices at Providence Swedish Edmonds Campus in Edmonds, Washington.
Does Dr. Ellen Lyman Thomason Derrick accept Medicare?
Yes. CMS data shows Dr. Derrick billed Medicare for 108 services in 2024.
How many Medicare patients does Dr. Ellen Lyman Thomason Derrick see?
CMS counts 35 Medicare patients who saw Dr. Derrick in 2024, with an average age of 73.
What services does Dr. Ellen Lyman Thomason Derrick bill to Medicare?
In 2024, Dr. Derrick's most billed Medicare services were office visit, established patient (99213), surgery: heart and blood vessels (36475) and office visit, new patient (99203).
What drugs does Dr. Ellen Lyman Thomason Derrick prescribe most?
In 2024 Medicare Part D data, Dr. Derrick's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Ellen Lyman Thomason Derrick received payments from drug or device companies?
CMS Open Payments shows $1,819 in general payments to Dr. Derrick from 11 companies from 2016 to 2024. The largest total came from Medtronic Vascular, Inc.
How long has Dr. Ellen Lyman Thomason Derrick been practicing?
Dr. Derrick graduated from medical school in 2001, 25 years ago.
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