Quick answers
- Where does Calvin L. Chao see patients?
- Medicare's clinician data lists 2 practice locations, including Chicago, IL and Bethpage, NY. Call before your visit to confirm the address.
- What is Calvin L. Chao's specialty?
- Medicare lists Vascular Surgery as the primary specialty.
- Does Calvin L. Chao accept Medicare assignment?
- Medicare's clinician data says Calvin L. Chao may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Calvin L. Chao's NPI number?
- 1124588264. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Calvin L. Chao is enrolled with Medicare (CMS data updated 2026-10-02).
- 200 E Illinois St, Apt 2912Chicago, IL 60611
- 700 Hicksville RdBethpage, NY 11714
Specialties
- Vascular Surgeryprimary
Other vascular surgeons in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1124588264 |
| 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
- 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