Dr. Jacek Zajac, MD

Dr. Jacek Zajac, MD

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Endocrinology  |  
Male  |  
51 y/o
(20)

Accepting new patients

Dr. Jacek Zajac, MD is an endocrinology doctor who practices in Lombard, IL. He is 51 years old and has been practicing for 26 years.

Su Jeng Md, Sc

130 S Main St Ste 303

Lombard, IL 60148
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Accepted insurance

  • Aetna
  • Cigna
  • First Health (Coventry Health Care)
  • HealthLink
  • Humana
  • MultiPlan
  • Priority Health

Learn about Dr. Zajac

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you

Top Care Areas

new

See how frequently Dr. Zajac performs your care needs compared to other doctors.

Diabetes Type 2
very high
more than 98% of peers
Thyroid Disease
very high
more than 95% of peers
Hypothyroidism
very high
more than 93% of peers

Dr. Zajac's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

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1

Specialties

  • Endocrinology
2

Board Certifications

  • Diabetes, Metabolism & Endocrinology
    Accredited by: American Board of Internal Medicine*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*
47

Conditions Treated

  • Abnormal Thyroid
  • Adrenal Gland Diseases
  • Adrenal Insufficiency
  • Autoimmune Diseases
  • Autoimmune Thyroid Diseases
  • Benign Tumor
  • Bone Disorders
  • Breast Diseases
  • Calcium Metabolism Disorders
  • Cancer
  • Diabetes Mellitus, Secondary
  • Diabetes Type 1
  • Diabetes Type 2
  • Diabetes With Renal Manifestations
  • Diabetic Ketoacidosis
  • Diabetic Retinopathy
  • Female Infertility
  • Goiter
  • Graves' Disease
  • Growth Hormone Deficiency
  • Hypercalcemia
  • Hyperkalemia
  • Hyperlipidemia
  • Hyperparathyroidism
  • Hyperthyroidism
  • Hypokalemia
  • Hypoparathyroidism
  • Hypopituitarism
  • Hyposmolality and Hyponatremia
  • Hypothyroidism
  • Kidney Disease
  • Lipid Disorders
  • Malaise and Fatigue
  • Obesity
  • Osteopenia
  • Osteoporosis
  • Parathyroid (Gland) Tumor: Other than Malignant
  • Phosphorus Metabolism Disorders
  • Polycystic Ovarian Syndrome
  • Retina Diseases
  • Rickets
  • Symptomatic Menopause
  • Testicular Dysfunction
  • Thyroid Cancer
  • Thyroid Cyst
  • Thyroid Disease
  • Vitamin D Deficiency

More

Read More
2

Procedures

  • Continuous Glucose Monitoring
  • Diabetes Counseling

Background Check

0 Malpractice Claims

No malpractice history found for Illinois.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.

Education

  • Jagiellonian University Medical College, Faculty Of Medicine
    Medical School | Graduated 1991
  • Beth Israel Med Center
    Residency Hospital | Completed
  • Maimonides Med Center
    Residency Hospital | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Zajac has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Zajac does not have any memberships or affiliations listed. If you are Dr. Zajac and would like to add memberships or affiliations, please update your profile.

Dr. Zajac's Reviews

Likelihood of recommending Dr. Zajac to family and friends
4.6
based on 20 total reviews (2 with comments)
Dr. Zajac's Performance
  • Trustworthiness
    EXCELLENT
  • Explains condition(s) well
    EXCELLENT
  • Answers Questions
    EXCELLENT
  • Time well spent
    EXCELLENT
Office & Staff Performance
  • Scheduling
    VERY GOOD
  • Office environment
    VERY GOOD
  • Staff friendliness
    VERY GOOD
  • Average wait time
    16 to 30 minutes
Patient Comments (2)
in Elmhurst Il |
Best dr around spends time and listens to you! Thats means alot to me! Would highly recomend ??
in GLENDALE HEIGHTS |
Dr Zajac has been my doctor for 15 years and I would highly recommend him to anyone.He comes into the room and listens to what your needs are as well as your feelings. Never had anyone do that before. He doesnt look at you and move on to the next patient like your not important. Everyone is equal. Im glad I met him threw a friend 15 years ago.
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Visit Dr. Zajac

Now Accepting New Patients
Dr. Zajac accepts 7 insurance carriers
  • Aetna
    Aetna HMO
    Choice Plus POS II
  • Cigna
    Cigna HMO
    Cigna PPO
    Open Access Plus
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • HealthLink
    HealthLink PPO
  • Humana
    Choice Care PPO
    Preferred PPO
  • MultiPlan
    MultiPlan PPO
  • Priority Health
    Priority PPO

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Zajac has admitting privileges

Elmhurst Memorial Hospital
155 E Brush Hill Rd
Elmhurst, IL 60126
View Hospital Profile
Advocate Good Samaritan Hospital
3815 Highland Ave
Downers Grove, IL 60515
View Hospital Profile
Loyola University Medical Center
2160 S 1st Ave
Maywood, IL 60153
View Hospital Profile

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