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Dr. Jacek Zajac, MD

Endocrinology, Diabetes & Metabolism*
4.6 (29)
Map Pin Small Lombard, IL
Accepting new patients

Offers telehealth

Overview of Dr. Jacek Zajac, MD

Dr. Jacek Zajac, MD is an Endocrinology, Diabetes & Metabolism Specialist in Lombard, IL. They graduated from JAGIELLONSKI UNIVERSITY / COLLEGE OF MEDICINE and is affiliated with Elmhurst Hospital - Main Campus, Edward Hospital - Main Campus, Advocate Illinois Masonic Medical Center and Advocate Good Samaritan Hospital. Patients rated Dr. Zajac an average 4.6 star rating.

Dr. Zajac works at Practice in Lombard, IL. They frequently treat conditions like Diabetes Type 2 and Thyrotoxicosis along with other conditions at varying frequencies. They are accepting new patients and accept Aetna, Blue Cross Blue Shield and Cigna as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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Dr. Zajac's Office Locations

  1. 1
    Office
    2500 S Highland Ave Ste 104, Lombard, IL 60148 Icon Directions Right Arrow Directions Phone Icon (630) 629-3610
  2. 2
    Suburban Retina Ltd.
    130 S Main St Ste 303, Lombard, IL 60148 Icon Directions Right Arrow Directions Phone Icon (630) 629-3610

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Elmhurst Hospital - Main Campus
  • Edward Hospital - Main Campus
  • Advocate Illinois Masonic Medical Center
  • Advocate Good Samaritan Hospital

Experience & Treatment Frequency

NEW FEATURE

What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Diabetes Type 2
Thyrotoxicosis
Thyroid Hormone Replacement

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Diabetes Type 2 Chevron Icon
Thyrotoxicosis Chevron Icon
Thyroid Hormone Replacement Chevron Icon
Diabetes Type 1 Chevron Icon
Adrenal Gland Diseases Chevron Icon
Adrenal Insufficiency Chevron Icon
Autoimmune Thyroid Diseases Chevron Icon
Autoimmune Thyroiditis Chevron Icon
Calcium Metabolism Disorders Chevron Icon
Diabetes With Renal Manifestations Chevron Icon
Diabetic Ketoacidosis Chevron Icon
Diabetic Polyneuropathy Chevron Icon
Dyslipidemia Chevron Icon
Endocrine Gland Cancer Chevron Icon
Goiter Chevron Icon
  • View other providers who treat Goiter
Graves' Disease Chevron Icon
Hashimoto's Disease Chevron Icon
Hypercalcemia Chevron Icon
Hyperlipidemia Chevron Icon
Hyperparathyroidism Chevron Icon
Hyperthyroidism Chevron Icon
Hypoglycemia Chevron Icon
Hypogonadism Chevron Icon
Hypokalemia Chevron Icon
Hypoparathyroidism Chevron Icon
Hyposmolality and Hyponatremia Chevron Icon
Hypothalamus Cancer Chevron Icon
Hypothyroidism Chevron Icon
Lipid Disorders Chevron Icon
Malaise and Fatigue Chevron Icon
Metabolic Syndrome Chevron Icon
Mineral Metabolism Disorders Chevron Icon
Morbid Obesity Chevron Icon
Obesity Chevron Icon
  • View other providers who treat Obesity
Osteoporosis Chevron Icon
Parathyroid (Gland) Disease Chevron Icon
Peripheral Edema Chevron Icon
Pituitary Tumor Chevron Icon
Secondary Diabetes Mellitus Chevron Icon
Testicular Dysfunction Chevron Icon
Thyroid Cyst Chevron Icon
Thyroid Nodule Chevron Icon
Thyroiditis Chevron Icon
Vitamin D Deficiency Chevron Icon
Vitamin_Deficiency Chevron Icon
Continuous Glucose Monitoring Chevron Icon
Abnormal Thyroid Chevron Icon
Acanthosis Nigricans Chevron Icon
Acromegaly and Gigantism Chevron Icon
Adrenal Gland Cancer Chevron Icon
Adrenal Incidentaloma Chevron Icon
Benign Pituitary Gland Tumor Chevron Icon
Congenital Adrenal Hyperplasia (CAH) Chevron Icon
Congenital Hypothyroidism Chevron Icon
Conn's Syndrome Chevron Icon
Craniopharyngioma Chevron Icon
Cushing's Syndrome Chevron Icon
Diabetes Insipidus Chevron Icon
Diabetic Coma Chevron Icon
Drug Induced Thyroiditis Chevron Icon
Familial Hypercholesterolemia Chevron Icon
Female Infertility Chevron Icon
Gestational Diabetes Chevron Icon
Growth Hormone Deficiency Chevron Icon
Gynecomastia Chevron Icon
Hemochromatosis Chevron Icon
Hyperaldosteronism Chevron Icon
Hyperandrogenization Syndrome Chevron Icon
Hyperkalemia Chevron Icon
Hyperprolactinemia Chevron Icon
Hypopituitarism Chevron Icon
Iodine Deficiency Chevron Icon
Iron Metabolism Disorders Chevron Icon
Klinefelter Syndrome Chevron Icon
Leg and Foot Ulcers Chevron Icon
Lipedema Chevron Icon
  • View other providers who treat Lipedema
Magnesium Metabolism Disorders Chevron Icon
Male Infertility Chevron Icon
Menstrual Disorders Chevron Icon
Neuroendocrine Tumors Chevron Icon
Non-Alcoholic Fatty Liver Disease Chevron Icon
Osteopenia Chevron Icon
Overweight Chevron Icon
Perimenopause Chevron Icon
Pheochromocytoma Chevron Icon
Phosphorus Metabolism Disorders Chevron Icon
Pituitary Gland Cancer Chevron Icon
Polycystic Ovarian Syndrome Chevron Icon
Primary Adrenocortical Insufficiency Chevron Icon
Primary Hyperparathyroidism Chevron Icon
Proteinuria Chevron Icon
Renal Hyperparathyroidism Chevron Icon
Secondary Hyperparathyroidism Chevron Icon
Secondary Hypertension Chevron Icon
Subacute Thyroiditis Chevron Icon
Symptomatic Menopause Chevron Icon
Thyroid Cancer Chevron Icon
Thyroid Goiter Chevron Icon
Thyrotoxicosis Factitia Chevron Icon
Vitamin B12 Anemia Chevron Icon
ACTH (Cosyntropin) Stimulation Test Chevron Icon
Cholesterol Screening Chevron Icon
Dexamethasone Suppression Test Chevron Icon
Diabetes Counseling Chevron Icon
Diabetes Screening Chevron Icon
Diabetic Evaluation Chevron Icon
Dynamic Endocrine Function Test Chevron Icon
Oral Glucose Tolerance Test Chevron Icon
Thyroid Nodule Evaluation Chevron Icon
Thyroid Scan Chevron Icon
Thyroid Screening Chevron Icon
Ultrasound, Thyroid Chevron Icon
VAP Lipid Testing Chevron Icon
Water Deprivation Test Chevron Icon
Check your insurance
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    Please double-check when making an appointment.

    View All Accepted Carriers

    • Aetna
    • Blue Cross and Blue Shield of Illinois
    • Blue Cross Blue Shield
    • Cigna
    • First Health
    • Humana
    • UnitedHealthCare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    4.6
    Average provider rating
    Based on 29 ratings
    Patient Ratings (29)
    5 Star
    (24)
    4 Star
    (1)
    3 Star
    (1)
    2 Star
    (2)
    1 Star
    (1)
    Leave a review

    How was your appointment with Dr. Zajac?

    Jan 10, 2024
    He is the best endocrinologist
    — Jan 10, 2024
    Read more reviews on Healthgrades
    Photo: Dr. Jacek Zajac, MD
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    Dr. Zajac's Office & Staff

    • Ease of scheduling urgent appointments
    • Office environment, cleanliness, comfort, etc.
    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. Zajac

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. Jacek Zajac, MD

    Specialties*
    • Endocrinology, Diabetes & Metabolism

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1396817912
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Medical Education
    • JAGIELLONSKI UNIVERSITY / COLLEGE OF MEDICINE
    Medical Education
    Board Certifications
    • Diabetes, Metabolism & Endocrinology
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. Jacek Zajac, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Zajac is offering online scheduling or call the provider’s office for more information.

    Dr. Zajac has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    Dr. Zajac has seen patients for Diabetes Type 2 and Thyrotoxicosis, and more. You can see other conditions treated by Dr. Zajac on their profile. Please call the provider’s office to confirm all visit reasons.

    29 patients have reviewed Dr. Zajac. The overall rating for this provider is 4.6. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Zajac.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Zajac, there are benefits to both methods. A person calling to schedule an with Dr. Zajac appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

    Telehealth Options
    This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Zajac, or would you like to choose another provider and have an online appointment right now?
    Find provider online now
    Call now to make an appointment
    (630) 629-3610

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