Quick answers
- Which hospitals does John B. Alexis work at?
- Medicare's official clinician data lists John B. Alexis at 2 hospitals: Northwestern Medicine Central Dupage Hospital and Northwestern Medicine McHenry. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John B. Alexis see patients?
- Medicare's clinician data lists 7 practice locations, including Huntley, IL, Sycamore, IL and Winfield, IL. Call before your visit to confirm the address.
- What is John B. Alexis's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does John B. Alexis accept Medicare assignment?
- Yes. Medicare's clinician data says John B. Alexis accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does John B. Alexis offer telehealth?
- Medicare's clinician data says John B. Alexis offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John B. Alexis?
- (630) 933-2640, as listed in official Medicare / NPI Registry data.
- What is John B. Alexis's NPI number?
- 1689608713. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John B. Alexis works
Medicare's Facility Affiliation Data lists John B. Alexis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · CCN 140116
Practice locations
Addresses where John B. Alexis is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 10350 Haligus RdHuntley, IL 60142
- 1850 Gateway DrSycamore, IL 60178
- 25 N Winfield RdWinfield, IL 60190 (630) 933‑2640
- 360 Station DrCrystal Lake, IL 60014 (815) 788‑7500
- 515 Valley View Dr, Suite 201Moline, IL 61265 (312) 695‑0870
Group practices
Medicare enrollment lists John B. Alexis as a member of these groups (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
- Central Dupage Emergency Physicians PC38 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Huntley
Clinicians with the same Medicare primary specialty in Huntley, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1689608713 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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