Quick answers
- Where does Gianna Martelli see patients?
- Medicare's clinician data lists 2 practice locations, including Chicago, IL and Commerce City, CO. Call before your visit to confirm the address.
- What is Gianna Martelli's specialty?
- Medicare lists Clinical Social Worker as the primary specialty.
- Does Gianna Martelli accept Medicare assignment?
- Medicare's clinician data says Gianna Martelli may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Gianna Martelli offer telehealth?
- Medicare's clinician data says Gianna Martelli offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gianna Martelli?
- (773) 250-5222, as listed in official Medicare / NPI Registry data.
- What is Gianna Martelli's NPI number?
- 1013574656. 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 Gianna Martelli is enrolled with Medicare (CMS data updated 2026-10-02).
- 1541 W Devon AveChicago, IL 60660 (773) 250‑5222
- 5996 E 64th Ave, Oak Street Health Commerce CityCommerce City, CO 80022 (720) 463‑6758
Group practices
Medicare enrollment lists Gianna Martelli as a member of these groups (CMS data updated 2026-10-02).
- Oak Street Health Physicians Group PC229 clinicians in the group
- Oak Street Health Physicians Group of Colorado PLLC36 clinicians in the group
Specialties
- Clinical Social Workerprimary
Other clinical social workers in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1013574656 |
| 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