Frequently Asked Questions
Your Questions Answered
Please contact our office directly at 847-317-1717 M-F 9:00 a.m.- 5:00 p.m. or by filling out the inquiry form and someone from our office will be happy to explain our fee structure.
The annual fee includes your annual comprehensive physical exam, blood work specific to the annual exam and an EKG. Any insurance or Medicare payment we receive for that visit will be reimbursed to you. Additionally, you will have readily available appointment times and the doctors’ cellphone numbers for after hours medical questions.
Yes, we accept Medicare and are In Network for many insurance plans. Office visits, aside from your annual physical, will be billed to your insurance and you will be balance billed the portion insurance does not pay. We do not collect any co-pays.
You may use your HSA/FSA account to pay for your annual fee. Beyond that, patients are advised to consult with their tax consultant.
You are free to see any specialist you like but our physicians have developed strong relationships with top specialists in all fields. Our doctors will follow up with your specialist and can help orchestrate much of your specialty care. Our physicians are on staff at Northwestern Lake Forest, NorthShore University HealthSystem and Rush University and can refer patients to select specialists across the country.
Our practice is very accustomed to managing our patients’ care while they travel. The physicians have developed strong contacts with specialists all over the country and can often facilitate making appointments, communicate with other physicians and provide continuity of care while you are away.
We Think Differently About Your Health
We strive to get you to your best health through superior care & personalized attention.
Meet Our Team

Dr. Gerald Osher
+1 847 317 1717
members@northshoremed.org
35 Years Experience

Dr. Brent Nathan
+1 847 317 1717
members@northshoremed.org
5+ Years Experience

Debbie Erickson, MA
+1 847 317 1717
members@northshoremed.org
10 Years Experience

Yuliana Ibarra
+1 847 317 1717
members@northshoremed.org
10 Years Experience
We Put the Needs of Patients First
North Shore Medical Associates is an internal medicine practice that is passionate about transforming your healthcare experience through our comprehensive and integrated care model. Our concierge medicine practice serves patients throughout the North Shore suburbs of Chicago and specializes in internal medicine and combines compassion and integrity with exceptional healthcare and support services.
We have come together as physicians striving for a solution that focuses on and honors the patient-doctor relationship. As doctors that genuinely love our profession, we value practicing in an environment that allows time to listen, time to understand complex issues, and time for meaningful interactions.
We are committed to personalized care and value the unique healthcare needs of each individual. Thank you for placing trust in us and we are honored to be your physicians.
- Easy access to your physician
- readily available appointments
- meticulous attention to privacy
- a focus on prevention
- expertise in disease management
- unhurried appointments
Patient Testimonials

“Can't say enough great things about my visit today with Dr. Nathan. He was extremely thorough and took time to walk me through everything he was doing in order to gain a full understand my issues. Not only did he make me feel completely comfortable but I felt he genuinely cared about the issues I am having and my health. On top of that he is so kind and easy to speak to. Highly recommend!!”
Jean T.

“As always, he was informative and insightful. He asked revealing questions. Dr. Nathan is the best physician I've ever dealt with.”
James M.

“Dr. Nathan = Fabulous. Everything about my experience was informative, thoughtful, personalized, and candid. He took the time to listen and explain. He was fully present and kind. Moreover, due to severe weather in Chicago, the office staff was out, and Dr. Nathan just took care of things... No Fuss. Simply outstanding.”
Adam F.

If you want a doctor that is going to advocate for you or your loved one, it's Dr. Osher. He is the best of the best! My mom fell and hurt her leg and Dr. O stepped in and made sure she is getting the best of care. Feeling the most confident I have along this journey since Dr. O has been in the picture. This type of care is priceless!
Anna S.

Dr. Osher is a great listener that enabled my elderly father to accurately describe the physical issues that needed to be addressed and solved. Dr. Osher was kind, considerate and very matter of fact in describing the best treatment of exercise, food, sleep and meds. The treatment was prescribed and Dr. Osher followed up to ensure my Dad was over his medical difficulty. Excellent doctor and a fantastic staff who care 24/7.