28 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Zajac, Endocrinologist in Lombard, IL?
Dr. Jacek Zajac, MD is an Endocrinologist, who primarily practices in Lombard, IL with 2 additional practice locations. He has been practicing for over 28 years and is board certified. Dr. Zajac completed his residency at Beth Israel Med Center. Dr. Zajac is fluent in English, Polish, and Russian, and is currently seeing new patients. Dr. Zajac’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Zajac’s office at (630) 629-3610.
Where did Dr. Zajac go to medical school and complete their residency?
Residency: Beth Israel Med Center | Maimonides Medical Center | Beth Israel Deaconess Medical Center Program
What languages does Dr. Zajac speak?
Dr. Zajac and their clinical team can communicate with patients in the following languages:
English
Polish
Russian
What conditions does Dr. Zajac treat?
As a Endocrinologist, Dr. Zajac diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Zajac. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Type 2 Diabetes with High Blood Sugar
- Type 2 Diabetes
- Type 2 Diabetes with Chronic Kidney Disease
- Diabetes Type 2
- Hyperglycemia
- Type 2 diabetes
- Diabetic Kidney Problems
- Diabetic Hyperglycemia
- High Blood Glucose
- High Sugar Levels
- Diabetes Mellitus Type 2
- Adult-Onset Diabetes
- Non-Insulin Dependent Diabetes
- Diabetic Chronic Kidney Disease
- Long-term Kidney Failure from Type 2 Diabetes
- Type 2 Diabetes End-Stage Renal Disease
ICD-10 Codes:
- E1165: Type 2 diabetes mellitus with hyperglycemia
- E119: Type 2 diabetes mellitus without complications
- E1122: Type 2 diabetes mellitus with diabetic chronic kidney disease
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Hypothyroidism
- Congenital hypothyroidism
- Hypothyroidism (Underactive Thyroid)
- Underactive Thyroid
- Low Thyroid Function
ICD-10 Codes:
- E039: Hypothyroidism, unspecified
Also known as:
- Mixed High Cholesterol and Triglycerides
- Cholesterol
- Triglycerides
- Mixed hyperlipidemia
- Combined hyperlipidemia
- High lipids
ICD-10 Codes:
- E782: Mixed hyperlipidemia
Also known as:
- Graves' Disease
- Hyperthyroidism
- Graves' disease
- Graves Disease
- Hyperthyroidism (Overactive Thyroid)
- Hyperthyroidism with Goiter
- Toxic Diffuse Goiter
- Overactive Thyroid with Enlarged Gland
- Overactive Thyroid
- Thyrotoxicosis
- High Thyroid Function
ICD-10 Codes:
- E0500: Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm
- E0590: Thyrotoxicosis, unspecified without thyrotoxic crisis or storm
Also known as:
- High Cholesterol
- Cholesterol
- Triglycerides
- Hyperlipidemia
- High lipids
- Dyslipidemia
ICD-10 Codes:
- E785: Hyperlipidemia, unspecified
Also known as:
- Nontoxic Multinodular Goiter
- Thyroid Disease
- Multinodular Goiter
- Lumpy Enlarged Thyroid
ICD-10 Codes:
- E042: Nontoxic multinodular goiter
Also known as:
- Long-Term Insulin Use
- Diabetes Medicines
- Chronic insulin therapy
- Ongoing insulin treatment
- Insulin for diabetes
ICD-10 Codes:
- Z794: Long term (current) use of insulin
Also known as:
- Type 1 Diabetes with High Blood Sugar
- Type 1 Diabetes
- Diabetes Type 1
- Hyperglycemia
- Type 1 diabetes
- Diabetes Tests & Diagnosis
- Diabetic Hyperglycemia
- High Glucose in Type 1 Diabetes
- High Blood Sugar Episode
- Juvenile Diabetes
- Insulin-Dependent Diabetes
- T1D
ICD-10 Codes:
- E1065: Type 1 diabetes mellitus with hyperglycemia
- E109: Type 1 diabetes mellitus without complications
Also known as:
- High Blood Sugar
- Hyperglycemia
- Elevated Glucose
- Unspecified High Blood Sugar
ICD-10 Codes:
- R739: Hyperglycemia, unspecified
Also known as:
- Single Nontoxic Thyroid Nodule
- Thyroid Disease
- Benign Thyroid Nodule
- Solitary Thyroid Nodule
ICD-10 Codes:
- E041: Nontoxic single thyroid nodule
Also known as:
- Age-Related Osteoporosis
- Fractures
- Osteoporosis
- Senile Osteoporosis
- Primary Osteoporosis
- Bone Thinning from Aging
ICD-10 Codes:
- M810: Age-related osteoporosis without current pathological fracture
Also known as:
- Hardening of the Arteries in the Heart without Chest Pain
- Atherosclerosis
- Coronary Artery Disease
- Silent Coronary Artery Disease
- Asymptomatic Atherosclerosis
ICD-10 Codes:
- I2510: Atherosclerotic heart disease of native coronary artery without angina pectoris
Also known as:
- Testicular Hypofunction
- Testicular Disorder
- Underactive Testicles
- Low Testicular Function
- Hypogonadism
ICD-10 Codes:
- E291: Testicular hypofunction
Also known as:
- Thyroid Cancer
- Thyroid Gland Cancer
- Papillary Thyroid Cancer
- Follicular Thyroid Cancer
ICD-10 Codes:
- Z85850: Personal history of malignant neoplasm of thyroid
Also known as:
- Vitamin D Deficiency
- Low Vitamin D Levels
- Lack of Vitamin D
- Hypovitaminosis D
ICD-10 Codes:
- E559: Vitamin D deficiency, unspecified
Which procedures does Dr. Zajac perform as a Endocrinologist?
As a Endocrinologist, procedures performed by an Dr. Jacek Zajac may include:
- Adrenal Surgery
- Comparative Genomic Hybridization
- D and C / Vacuum Aspiration
- Diabetes Blood Sugar Management
- Diabetes Care - Kidney Disease Monitoring
- Diabetes Consultation
- Doppler Ultrasound
- Egg Freezing/ Fertility Preservation
For detailed information, please contact Dr. Zajac's office.
Does Dr. Zajac accept my insurance?
Dr. Zajac accepts most major insurance plans. Important: Please call our office at (630) 629-3610 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Zajac accept in Lombard, IL?
Dr. Zajac in Lombard, IL accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
CVS Health (formerly Aetna)
Express Scripts
Health Care Service Corporation (HCSC)
Humana
Medicare
UnitedHealthcare
View All Insurances
Where is Dr. Zajac's office located?
Dr. Jacek Zajac's Primary Practice
2500 S Highland Ave Ste 104
Lombard, IL 60148
(630) 629-3610
What is Dr. Zajac's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Zajac's National Provider Identifier (NPI) number is 1396817912.
What common questions do patients ask about Dr. Zajac?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Zajac
What is Dr. Jacek Zajac's specialty?
Dr. Zajac is a Endocrinologist near Lombard, IL. An internist specializing in disorders of the endocrine glands, including the thyroid and adrenal glands. This specialist also manages a range of conditions such as diabetes, metabolic and nutritional disorders, obesity, pituitary disorders, and menstrual and sexual health issues. Contact Dr. Zajac to book an appointment today.
Is this Dr. Jacek Zajac affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Zajac is affiliated with Endeavor Health Elmhurst Hospital, Advocate Good Samaritan Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Endocrinologist?
Explore Endocrinologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Jacek Zajac accepting new patients in Lombard, IL?
Yes, Dr. Jacek Zajac is accepting new patients at this time.
Does Dr. Jacek Zajac offer online booking?
Please contact Dr. Zajac's office at (630) 629-3610 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Jacek Zajac?
Please contact Dr. Zajac's office at (630) 629-3610 for information regarding telehealth appointment availability or for scheduling assistance.
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