Quick answers
- Which hospitals does Mark E. Giacomi Jr. work at?
- Medicare's official clinician data lists Mark E. Giacomi Jr. at 2 hospitals: Edward Hospital and UChicago Medicine AdventHealth Bolingbrook. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark E. Giacomi Jr. see patients?
- Medicare's clinician data lists 2 practice locations, including Plainfield, IL and Bolingbrook, IL. Call before your visit to confirm the address.
- What is Mark E. Giacomi Jr.'s specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Mark E. Giacomi Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Mark E. Giacomi Jr. 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 Mark E. Giacomi Jr.?
- (815) 254-2403, as listed in official Medicare / NPI Registry data.
- What is Mark E. Giacomi Jr.'s NPI number?
- 1639334667. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark E. Giacomi Jr. works
Medicare's Facility Affiliation Data lists Mark E. Giacomi Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Edward HospitalNaperville, IL · Acute Care Hospital · CCN 140231
- UChicago Medicine AdventHealth BolingbrookBolingbrook, IL · Acute Care Hospital · CCN 140304
Practice locations
Addresses where Mark E. Giacomi Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 23836 W 135th StPlainfield, IL 60544 (815) 254‑2403
- 396 Remington BlvdBolingbrook, IL 60440
Group practices
Medicare enrollment lists Mark E. Giacomi Jr. as a member of this group (CMS data updated 2026-10-02).
- Adventist Health Partners, Inc.255 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Plainfield
Clinicians with the same Medicare primary specialty in Plainfield, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639334667 |
| 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