Quick answers
- Which hospitals does Reeti Greenwald work at?
- Medicare's official clinician data lists Reeti Greenwald at 2 hospitals: Northwestern Medicine Central Dupage Hospital and Northwestern Medicine Delnor Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Reeti Greenwald see patients?
- Medicare's clinician data lists 2 practice locations, including Winfield, IL and Geneva, IL. Call before your visit to confirm the address.
- What is Reeti Greenwald's specialty?
- Medicare lists Sleep Medicine as the primary specialty, and also Neurology and Neuropsychiatry.
- Does Reeti Greenwald accept Medicare assignment?
- Yes. Medicare's clinician data says Reeti Greenwald 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 Reeti Greenwald offer telehealth?
- Medicare's clinician data says Reeti Greenwald offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Reeti Greenwald?
- (630) 260-0600, as listed in official Medicare / NPI Registry data.
- What is Reeti Greenwald's NPI number?
- 1649690827. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Reeti Greenwald works
Medicare's Facility Affiliation Data lists Reeti Greenwald 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 Delnor Community HospitalGeneva, IL · Acute Care Hospital · CCN 140211
Practice locations
Addresses where Reeti Greenwald is enrolled with Medicare (CMS data updated 2026-10-02).
- 0 N025 Winfield RdWinfield, IL 60190 (630) 260‑0600
- 302 Randall RdGeneva, IL 60134 (630) 377‑7900
Group practices
Medicare enrollment lists Reeti Greenwald as a member of this group (CMS data updated 2026-10-02).
- Central Dupage Physician Group1,080 clinicians in the group
Specialties
- Sleep Medicineprimary
- Neurologyalso
- Neuropsychiatryalso
Other sleep medicine doctors in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1649690827 |
| 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