Summary

Dr. Ronald Gregus is a family medicine physician with specialized training in preventative medicine, bringing four decades of medical experience to his practice. He completed his medical education at Universidad De Guadalajara Centro Universitario De Ciencias De La Salud and continued his residency training at Swedish Covenant Hospital. Dr. Gregus is fluent in both Polish and Spanish, allowing him to serve diverse patient communities.

Dr. Gregus practices at multiple locations throughout Illinois, including New Lenox, Plainfield, Bolingbrook, and Joliet. He maintains hospital affiliations with Silver Cross Hospital, Prime Healthcare Saint Joseph Medical Center Joliet, and UChicago Medicine AdventHealth Bolingbrook. His clinical expertise includes treating cuts and wounds, sore throats, and COVID-19. He performs flu testing, strep testing, and COVID-19 testing to help diagnose and manage common illnesses. Patients have given him an average rating of 2.3.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 2.3
  • 40 years of experience
  • speaks Polish, Spanish
  • Swedish Covenant Hospital
  • 2 written reviews
  • 2 specialties
  • 2 areas of expertise
  • 3 hospital affiliations
  • 7 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Flexible scheduling
  • Staff was courteous

Office Locations

Dr. Ronald C Gregus has 7 locations

Physicians Immediate Care

621 E Lincoln HwyNew Lenox, IL 60451
Mon8:00 am - 8:00 pm
Tue8:00 am - 8:00 pm
Wed8:00 am - 8:00 pm
Thu8:00 am - 8:00 pm
Fri8:00 am - 8:00 pm
Sat8:00 am - 8:00 pm
Sun8:00 am - 8:00 pm

Physicians Immediate Care

6050 Caton Farm RdPlainfield, IL 60586
Mon8:00 am - 8:00 pm
Tue8:00 am - 8:00 pm
Wed8:00 am - 8:00 pm
Thu8:00 am - 8:00 pm
Fri8:00 am - 8:00 pm
Sat8:00 am - 8:00 pm
Sun8:00 am - 8:00 pm

Physicians Immediate Care Bolingbrook

391 S Bolingbrook DrBolingbrook, IL 60440
Mon7:30 am - 10:00 pm
Tue7:30 am - 10:00 pm
Wed7:30 am - 10:00 pm
Thu7:30 am - 10:00 pm
Fri7:30 am - 10:00 pm
Sat7:30 am - 4:00 pm
Sun7:30 am - 4:00 pm

Physicians Immediate Care

800 N Larkin AveJoliet, IL 60435
Mon8:00 am - 8:00 pm
Tue8:00 am - 8:00 pm
Wed8:00 am - 8:00 pm
Thu8:00 am - 8:00 pm
Fri8:00 am - 8:00 pm
Sat8:00 am - 8:00 pm
Sun8:00 am - 8:00 pm

Silver Cross Hospital

1900 Silver Cross BlvdNew Lenox, IL 60451

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Dr. Ronald C Gregus, MDDr. Naaz F Aziz, MDShanekwah Melville, DNP, APRN, FNP-CBrandi Rhoads
Family MedicineFamily MedicineFamily MedicineFamily Medicine
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
2.3 
4.6 
40 Years of Experience 18 Years of Experience 10 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks Polish, Spanish Speaks English, Hindi, Urdu Speaks English, Spanish
New Lenox , ILDes Plaines , ILHouston , TXTERRE HAUTE , IN
Med School: Universidad De Guadalajara Centro Universitario De Ciencias De La Salud Med School: Ross University School of Medicine, Dominica, West Indies
Current Profile
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Insurance Plans Accepted by Dr. Ronald C Gregus

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

Medical Specialties

Dr. Ronald C Gregus has the following 2 specialties

Specialty Expertise

Dr. Ronald C Gregus has the following 2 areas of expertise

  • Occupational Medicine
  • Preventative Medicine

Certifications, License, & Education

40 Years Experience

Dr. Ronald C Gregus 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 Swedish Covenant Hospital.

Medical School

Graduated from Universidad De Guadalajara Centro Universitario De Ciencias De La Salud in 1986.

NPI Number

Dr. Gregus' NPI number is 1205953684.

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Frequently Asked Questions

How can I make an appointment with Dr. Ronald Gregus?
You can find contact information for Dr. Ronald Gregus here on Vitals.
Does Dr. Ronald Gregus accept virtual/telehealth appointments?
Dr. Ronald Gregus has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
What languages does Dr. Ronald Gregus speak?
Dr. Ronald Gregus speaks Polish and Spanish.
Is Dr. Ronald Gregus accepting new patients?
Dr. Ronald Gregus is accepting new patients on Vitals. View Dr. Ronald Gregus's profile on Vitals to make an appointment.
Where is Dr. Ronald Gregus's office located?
Dr. Ronald Gregus's office is located at 621 E Lincoln Hwy, New Lenox, IL, 60451.

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