Quick answers
- Does Sean M. Gallagher accept Medicare assignment?
- Yes. Medicare's clinician data says Sean M. Gallagher 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 M. Gallagher see?
- In 2024, CMS data shows 568 Original Medicare patients and 814 services for Sean M. Gallagher. This counts Original Medicare only and measures volume, not quality.
- What is Sean M. Gallagher's NPI number?
- 1518579325. 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 M. Gallagher, 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 | 568 |
|---|---|
| Services billed to Medicare | 814 |
| Different services or procedures | 37 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)242 services
- Insertion of needle into vein for collection of blood sample (36415)157 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)87 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)50 services
- Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen (87635)44 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 cholesterol75%
- High blood pressure70%
- Arthritis44%
- Ischemic heart disease27%
- Diabetes25%
- Chronic kidney disease23%
Hospitals where Sean M. Gallagher works
Medicare's Facility Affiliation Data lists Sean M. Gallagher at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140242
Practice locations
Addresses where Sean M. Gallagher is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 14; the Medicare profile lists all.
- 1001 Commerce DrOak Brook, IL 60523
- 233 S Gary AveBloomingdale, IL 60108 (630) 358‑4414
- 233 S Gary Ave, Suite 100Bloomingdale, IL 60108 (630) 225‑2663
- 235 S Gary Ave, Suite 100Bloomingdale, IL 60108 (630) 893‑9600
- 2635 Church Rd, Suite 101Aurora, IL 60502 (630) 315‑6900
Group practices
Medicare enrollment lists Sean M. Gallagher as a member of this group (CMS data updated October 2, 2026).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Oak Brook
Clinicians with the same Medicare primary specialty in Oak Brook, IL — not a recommendation.
Other clinicians in Northwestern Medical Faculty Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1518579325 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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