About Primary Care Services
An internal medicine and primary care practice serving adults in Lombard and Glendale Heights, Illinois.
Who we are
Primary Care Services, S.C. (Primary Care Services) provides adult primary care and internal medicine from two offices in DuPage County. We believe the patient is at the core of the healthcare experience, and we aim to deliver respect and expertise at every visit.
Our approach to care
We are an NCQA-recognized Patient-Centered Medical Home: a team-based model built around a long-term relationship with your clinician, coordinated referrals, easier access and continuous quality improvement. We emphasize preventive care and use the Epic MyChart patient portal so you can see results, request refills and message your care team.
Our clinicians
- Iram Ahmed, MD
Board Certified Internist, Internal Medicine. Languages: English, Hindi, Urdu.
- Caseylin Cheng, PA-C
Board Certified Physician Assistant, Internal Medicine. Languages: English, Mandarin.
- Nuzhat A. Chalisa, MD
Board Certified Endocrinologist, Endocrinology. Languages: English, Gujarati, Hindi, Urdu.
Our offices
- Lombard Office
2500 S. Highland Ave., Suite 230, Lombard, IL 60148 · (630) 429-9000
- Glendale Heights Office
701 N. Winthrop Ave., Glendale Heights, IL 60139 · (630) 429-9000
Insurance, privacy and contact
We participate with most major plans, including Medicare; see insurance information. Read our Notice of Privacy Practices or contact us with non-urgent questions. For emergencies, call 911.

