Quick answers
- Which hospitals does Alkarim Tajuddin work at?
- Medicare's official clinician data lists Alkarim Tajuddin at 4 hospitals: Advocate Good Shepherd Hospital, Alexian Brothers Medical Center 1, Northwest Community Hospital 1 and St Alexius Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alkarim Tajuddin see patients?
- Medicare's clinician data lists 2 practice locations, including Barrington, IL and Elk Grove Village, IL. Call before your visit to confirm the address.
- What is Alkarim Tajuddin's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Alkarim Tajuddin accept Medicare assignment?
- Yes. Medicare's clinician data says Alkarim Tajuddin 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 Alkarim Tajuddin?
- (847) 885-4100, as listed in official Medicare / NPI Registry data.
- What is Alkarim Tajuddin's NPI number?
- 1922069160. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alkarim Tajuddin works
Medicare's Facility Affiliation Data lists Alkarim Tajuddin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Good Shepherd HospitalBarrington, IL · Acute Care Hospital · CCN 140291
- Alexian Brothers Medical Center 1Elk Grove Village, IL · Acute Care Hospital · CCN 140258
- Northwest Community Hospital 1Arlington Heights, IL · Acute Care Hospital · CCN 140252
- St Alexius Medical CenterHoffman Estates, IL · Acute Care Hospital · CCN 140290
Practice locations
Addresses where Alkarim Tajuddin is enrolled with Medicare (CMS data updated 2026-10-02).
- 27750 W Il Route 22, Suite G70Barrington, IL 60010 (847) 885‑4100
- 800 Biesterfield Rd, Suite 210Elk Grove Village, IL 60007 (847) 437‑3312
Group practices
Medicare enrollment lists Alkarim Tajuddin as a member of this group (CMS data updated 2026-10-02).
- Northwest Oncology and Hematology SC22 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922069160 |
| 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