Quick answers
- Which hospitals does Chong H. Ahn work at?
- Medicare's official clinician data lists Chong H. Ahn at 1 hospital: Northwest Community Hospital 1. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Chong H. Ahn see patients?
- Medicare's clinician data lists 2 practice locations, including Schaumburg, IL and Arlington Heights, IL. Call before your visit to confirm the address.
- What is Chong H. Ahn's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Chong H. Ahn accept Medicare assignment?
- Yes. Medicare's clinician data says Chong H. Ahn 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 Chong H. Ahn?
- (847) 490-0060, as listed in official Medicare / NPI Registry data.
- What is Chong H. Ahn's NPI number?
- 1871585216. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Chong H. Ahn works
Medicare's Facility Affiliation Data lists Chong H. Ahn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwest Community Hospital 1Arlington Heights, IL · Acute Care Hospital · CCN 140252
Practice locations
Addresses where Chong H. Ahn is enrolled with Medicare (CMS data updated 2026-10-02).
- 1345 Wiley Rd, Suite 111Schaumburg, IL 60173 (847) 490‑0060
- 3295 N Arlington Heights Rd, Suite 102Arlington Heights, IL 60004 (847) 490‑0060
Group practices
Medicare enrollment lists Chong H. Ahn as a member of this group (CMS data updated 2026-10-02).
- Stat Cardiologist Inc26 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Schaumburg
Clinicians with the same Medicare primary specialty in Schaumburg, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1968 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871585216 |
| 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