William Marshall
- Medicare patients, 2024
- 35
- Hospital affiliations
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2023
- Practice address
- 3901 Hoyt Avenue, Everett, WA 98201
- Practice phone
- Call (425) 317-3400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Optum - Founders
Mammography / Breast Imaging Center · Everett, Washington
Find William Marshall's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
William Marshall is a physician assistant in Everett, Washington
William Marshall practices at Optum - Founders in Everett, Washington.
William Marshall's NPI, 1427834779, was assigned on September 4, 2023. William Marshall holds Washington license PA61605637.
- NPI
- 1427834779NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406383256
- NPI enumeration date
- September 4, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (425) 317-3400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 28
- Medical school graduation
- 2024
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Marshall practices at Optum - Founders in Everett, Washington
William Marshall's primary practice is Optum - Founders, at 3901 Hoyt Avenue, Everett, WA 98201. The practice phone is (425) 317-3400.
- Optum - Founders3901 Hoyt Avenue, Everett, WA 98201Phone(425) 317-3400
Source: Dmand AI Affiliation Data
William Marshall is affiliated with 4 sites of care and 2 medical groups
William Marshall's primary practice is Optum - Founders in Everett, Washington. William Marshall is also affiliated with Providence Regional Medical Center Everett. The medical group on file is The Everett Clinic. Dmand AI also links William Marshall to 2 more group practices and clinics and 1 medical group, each named with a free account. William Marshall's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William Marshall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Marshall practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Optum - Founders | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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William Marshall is one of 3,005 physician assistants in Washington
Physician assistant is William Marshall's primary specialty in the NPI Registry, under taxonomy code 363A00000X. William Marshall is licensed in Washington.
Specialties and state licenses
- Physician assistant, WashingtonPrimary
Physician assistants near William Marshall
Counts of physician assistants 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
William Marshall treated 35 Medicare patients in 2024, average age 75
CMS counts 35 Medicare patients who saw William Marshall in 2024. The largest group is 75 to 84, with 14 patients. 66% of them have arthritis, and 66% have high cholesterol. Their average risk score is 1.24, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Marshall's median patient age at 68, with 64% women.
William Marshall's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William Marshall's Medicare patients by sex, 2024
- Women2263%
- Men1337%
Chronic conditions among William Marshall's Medicare patients, 2024
- Arthritis66%
- High cholesterol66%
- High blood pressure57%
- Diabetes37%
Share of Medicare patients with each condition. A patient can have several.
William Marshall's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women64%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How William Marshall takes part in Medicare
William Marshall accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for William Marshall'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 patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 William Marshall
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William Marshall's NPI number?
William Marshall's NPI number is 1427834779. It was assigned on September 4, 2023, and it is active in the NPI Registry.
What does William Marshall specialize in?
William Marshall is a physician assistant in Everett, Washington. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does William Marshall practice?
William Marshall practices at 3901 Hoyt Avenue, Everett, WA 98201. William Marshall's primary practice is Optum - Founders in Everett, Washington. Dmand AI also links William Marshall to 2 group practices and clinics and 1 medical group.
What is William Marshall's office phone number?
The practice phone on file for William Marshall is (425) 317-3400.
What is William Marshall's medical license number?
William Marshall holds Washington license PA61605637.
Which hospitals is William Marshall affiliated with?
William Marshall is affiliated with Providence Regional Medical Center Everett.
What medical group is William Marshall part of?
William Marshall is linked to The Everett Clinic. Dmand AI links William Marshall to 1 more medical group.
Does William Marshall accept Medicare?
Yes. CMS lists William Marshall as accepting Medicare assignment.
How many Medicare patients does William Marshall see?
CMS counts 35 Medicare patients who saw William Marshall in 2024, with an average age of 75.
How long has William Marshall been practicing?
William Marshall graduated from medical school in 2024, 2 years ago.
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