Quick answers
- Which hospitals does David Y. Chiou work at?
- Medicare's official clinician data lists David Y. Chiou at 2 hospitals: Advocate Condell Medical Center and Northwestern Lake Forest Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David Y. Chiou see patients?
- Medicare's clinician data lists 1 practice location in Grayslake, IL. Call before your visit to confirm the address.
- What is David Y. Chiou's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does David Y. Chiou accept Medicare assignment?
- Yes. Medicare's clinician data says David Y. Chiou 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.
- What is the phone number for David Y. Chiou?
- (847) 566-0300, as listed in official Medicare / NPI Registry data.
- What is David Y. Chiou's NPI number?
- 1093779084. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David Y. Chiou works
Medicare's Facility Affiliation Data lists David Y. Chiou at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Condell Medical CenterLibertyville, IL · Acute Care Hospital · CCN 140202
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · CCN 140130
Practice locations
Addresses where David Y. Chiou is enrolled with Medicare (CMS data updated 2026-10-02).
- 1170 E Belvidere Rd, Suite 202Grayslake, IL 60030 (847) 566‑0300
Group practices
Medicare enrollment lists David Y. Chiou as a member of this group (CMS data updated 2026-10-02).
- Lake County Medical Group SC2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Grayslake
Clinicians with the same Medicare primary specialty in Grayslake, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1093779084 |
| 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