Quick answers
- Does Sean T. McGuire accept Medicare assignment?
- Yes. Medicare's clinician data says Sean T. McGuire accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Sean T. McGuire see?
- In 2024, CMS data shows 483 Original Medicare patients and 1,492 services for Sean T. McGuire. This counts Original Medicare only and measures volume, not quality.
- What is Sean T. McGuire's NPI number?
- 1659647196. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sean T. McGuire, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 483 |
|---|---|
| Services billed to Medicare | 1,492 |
| Different services or procedures | 77 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (17311)385 services
- Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm (12032)137 services
- Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm (13132)136 services
- Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks (17312)85 services
- Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)83 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure68%
- High cholesterol66%
- Arthritis34%
- Chronic kidney disease26%
- Diabetes21%
- Ischemic heart disease21%
Practice locations
Addresses where Sean T. McGuire is enrolled with Medicare (CMS data updated October 2, 2026).
- 2901 174th St NEMarysville, WA 98271 (360) 454‑1900
Group practices
Medicare enrollment lists Sean T. McGuire as a member of this group (CMS data updated October 2, 2026).
- Optum Care Washington PLLC683 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Washington
Clinicians with the same Medicare primary specialty in Washington — not a recommendation.
Other clinicians in Optum Care Washington PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Pittsburgh School Of Medicine |
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659647196 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians