
Overview
Mark J. Charman, MD, an internal medicine physician at Endeavor Health, provides comprehensive care for adults, including preventive services and management of complex medical conditions. He supports patients through all stages of adult life, helping them navigate diagnoses and treatment decisions. Dr. Charman emphasizes continuity of care and long-term health planning.
Dr. Charman is rated as an Experienced provider by MediFind in the treatment of Sciatica. His top areas of expertise are Hypertension, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, and Macroamylasemia.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- INSURANCE PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- OTHER MEDICARE
- PPO
- EPO
- HMO
- PPO
- MEDICARE MAPD
- OTHER MEDICARE
- INSURANCE PLAN
- MEDICARE MAPD
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- POS
- HMO
- INDEMNITY
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER MEDICARE
- POS
- PPO
- OTHER MANAGED MEDICAID
- EPO
- HMO
- PPO
- HMO
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- OTHER MEDICARE PART D
- EPO
- HMO
- POS
- PPO
- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
600 W. Lake Cook Rd., Suite 160, Buffalo Grove, IL 60089
First Clinic, SC
Chris Chon is a primary care provider, practicing in Internal Medicine in Skokie, Illinois. Dr. Chon is rated as a Distinguished provider by MediFind in the treatment of Sciatica. His top areas of expertise are Sitosterolemia, Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Chronic Erosive Gastritis, and Thrombectomy.
Endeavor Health Medical Group
Rajan H. Patel, MD, an internal medicine physician at Endeavor Health, provides primary care for adults focused on prevention, wellness and chronic disease management. He develops individualized care plans to help patients maintain long-term health and manage complex conditions. Dr. Patel is rated as a Distinguished provider by MediFind in the treatment of Sciatica. His top areas of expertise are Bronchitis, Sitosterolemia, Infant Hyperglycemia, and High Cholesterol.
Endeavor Health Medical Group
Branka O'Sullivan, MD, an internal medicine physician at Endeavor Health, provides primary care for adults with a focus on preventive health, wellness and chronic disease management. She partners with patients to build long-term care plans that support lasting health outcomes. Dr. O'sullivan is rated as an Advanced provider by MediFind in the treatment of Sciatica. Her top areas of expertise are Infant Hyperglycemia, Congenital Sucrase-Isomaltase Deficiency, Glucose Phosphate Isomerase Deficiency, and Glucose-Galactose Malabsorption Deficiency.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Advanced
- Familial HypertensionDr. Charman isAdvanced. Learn about Familial Hypertension.
- Glucocorticoid-Remediable Aldosteronism
- HypertensionDr. Charman isAdvanced. Learn about Hypertension.
- Experienced
- AnemiaDr. Charman isExperienced. Learn about Anemia.
- AtherosclerosisDr. Charman isExperienced. Learn about Atherosclerosis.
- Benign Paroxysmal Positional VertigoDr. Charman isExperienced. Learn about Benign Paroxysmal Positional Vertigo.
- CellulitisDr. Charman isExperienced. Learn about Cellulitis.
- Chronic CoughDr. Charman isExperienced. Learn about Chronic Cough.
- Chronic Kidney DiseaseDr. Charman isExperienced. Learn about Chronic Kidney Disease.


