Quick answers
- Where does Mark C. Jacobson see patients?
- Medicare's clinician data lists 1 practice location in Hinsdale, IL. Call before your visit to confirm the address.
- What is Mark C. Jacobson's specialty?
- Medicare lists Allergy/Immunology as the primary specialty.
- Does Mark C. Jacobson accept Medicare assignment?
- Medicare's clinician data says Mark C. Jacobson may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Mark C. Jacobson offer telehealth?
- Medicare's clinician data says Mark C. Jacobson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark C. Jacobson?
- (630) 455-0456, as listed in official Medicare / NPI Registry data.
- What is Mark C. Jacobson's NPI number?
- 1124059076. 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 Mark C. Jacobson is enrolled with Medicare (CMS data updated 2026-10-02).
- 911 N Elm St, Suite 300Hinsdale, IL 60521 (630) 455‑0456
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1124059076 |
| 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