Summary

Dr. Grant Sievertsen has practiced endocrinology, diabetes and metabolism, and internal medicine for 52 years, treating type 2 diabetes mellitus, hypertension, and diabetes type 2 in children and teens. He also performs blood tests, thyroid function panels, and thyroid-stimulating hormone (TSH) tests.

He completed his residency at Michael Reese Hospital Medical Center and earned his medical degree from the Perelman School of Medicine at the University of Pennsylvania. Dr. Sievertsen sees patients in Hinsdale and Downers Grove, Illinois, and is affiliated with UChicago Medicine AdventHealth Hinsdale and Advocate Good Samaritan Hospital. He speaks English and Spanish. Patients on Vitals rate Dr. Sievertsen 4.1 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.1
  • 52 years of experience
  • speaks English, Spanish
  • Michael Reese Hospital Medical Center
  • 25 written reviews
  • 2 specialties
  • 12 areas of expertise
  • 2 hospital affiliations
  • 5 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Flexible scheduling

Office Locations

Dr. Grant Dean Sievertsen has 5 locations

Duly Health and Care

40 S Clay StHinsdale, IL 60521

Advocate Good Samaritan Hospital

3815 Highland AveDowners Grove, IL 60515

Clay Internal Medicine

40 S Clay St Ste 210Hinsdale, IL 60521
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 7:00 pm
Fri8:00 am - 4:00 pm
Sat8:00 am - 12:00 pm
SunClosed

Duly Health And Care Medical Group Hinsdale

40 S Clay St Ste 210Hinsdale, IL 60521
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 7:00 pm
Fri8:00 am - 4:00 pm
Sat8:00 am - 12:00 pm
SunClosed

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Dr. Grant Dean Sievertsen JR., MD
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Dr. Grant Dean Sievertsen JR., MDDr. Bekir SuveydDr. Oluwatomi Oluwagbemisola AsemotaDr. Andrea Lynn Mccoy
Endocrinology, Diabetes & MetabolismEndocrinology, Diabetes & MetabolismEndocrinology, Diabetes & MetabolismEndocrinology, Diabetes & Metabolism
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.1 
0 
0 
0 
52 Years of Experience 11 Years of Experience 12 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English, Arabic Speaks English
Hinsdale , ILChicago , ILChicago , ILChicago , IL
Med School: Perelman School Of Medicine At University Of Pennsylvania Med School: Alfaisal University College Of Medicine Med School: University Of Ibadan College Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Grant Dean Sievertsen

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Grant Dean Sievertsen has the following 2 specialties

Specialty Expertise

Dr. Grant Dean Sievertsen has the following 12 areas of expertise

  • Acromegaly
  • Addison Disease
  • Cushing Disease
  • Diabetes
  • Fatigue
  • Gland Issues
  • Hormones
  • Hyperthyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Internal Medicine
  • Metabolic Disorders

Certifications, License, & Education

52 Years Experience

Dr. Grant Dean Sievertsen holds an expired medical license in the state of Illinois.

Medical License

Medical Doctor with an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Residency

Completed their residency at Michael Reese Hospital Medical Center.

Medical School

Graduated from Perelman School Of Medicine At University Of Pennsylvania in 1974.

NPI Number

Dr. Sievertsen's NPI number is 1134197619.

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Frequently Asked Questions

Is Dr. Grant Sievertsen accepting new patients?
Dr. Grant Sievertsen is accepting new patients on Vitals. View Dr. Grant Sievertsen's profile on Vitals to make an appointment.
Where is Dr. Grant Sievertsen's office located?
Dr. Grant Sievertsen's office is located at 40 S Clay St, Hinsdale, IL, 60521.
Which hospitals is Dr. Grant Sievertsen affiliated with?
Dr. Grant Sievertsen is affiliated with Uchicago Medicine Adventhealth Hinsdale and Advocate Good Samaritan Hospital.
Does Dr. Grant Sievertsen accept virtual/telehealth appointments?
Dr. Grant Sievertsen has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
What languages does Dr. Grant Sievertsen speak?
Dr. Grant Sievertsen speaks English and Spanish.

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