Summary

Dr. James Greenberg treats colon polyps, diverticular disease, and tobacco use disorder, and performs colonoscopy, lower GI endoscopy, and laparoscopy. He practices surgery and has 35 years of experience. He is affiliated with Mercyhealth Hospital and Medical Center Harvard.

Board-certified in surgery by the American Board of Surgery, Dr. Greenberg received his medical degree from the University of Missouri–Kansas City School of Medicine and completed his residency in general surgery at Loyola University Medical Center in 1992. He sees patients in Harvard, Illinois, and Lake Geneva, Wisconsin. Patients on Vitals rate Dr. Greenberg 4.08 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.1
  • 35 years of experience
  • 9 insurance plans accepted
  • speaks English
  • Loyola Univ Med Ctr, General Surgery
  • 8 written reviews
  • 1 award
  • 1 specialty
  • 1 board certification
  • 1 hospital affiliation
  • 2 office locations
  • Male

Patients’ Perspective

  • Had a good bedside manner
  • Flexible scheduling

Awards

  • Vitals Preferred Provider

    • Vitals Preferred Provider Award
      • Preferred Provider badge recognizes providers that are committed to transparency, responsiveness and great service to patients, and have earned a high patient satisfaction rating.

  • Click for our Methodology

Office Locations

James J. Greenberg has 2 locations

Mercyhealth Hospital and Medical Center–Harvard

901 Grant St.Harvard, IL 60033
Mon12:00 am - 11:59 pm
Tue12:00 am - 11:59 pm
Wed12:00 am - 11:59 pm
Thu12:00 am - 11:59 pm
Fri12:00 am - 11:59 pm
Sat12:00 am - 11:59 pm
Sun12:00 am - 11:59 pm

Mercyhealth Hospital and Medical Center–Walworth

N2950 State Road 67Lake Geneva, WI 53147
Mon12:00 am - 11:59 pm
Tue12:00 am - 11:59 pm
Wed12:00 am - 11:59 pm
Thu12:00 am - 11:59 pm
Fri12:00 am - 11:59 pm
Sat12:00 am - 11:59 pm
Sun12:00 am - 11:59 pm

Compare with Similar Doctors

James J. Greenberg, MD
Dr. Helen Wiedemer Laib
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Dr. William Nick Georgis, MD
James J. Greenberg, MDDr. Helen Wiedemer LaibDr. Stephanie A KoplinDr. William Nick Georgis, MD
SurgeryTrauma SurgeryPathologyPlastic Surgery
Accepts New Patients
4.1 
0 
0 
4.5 
35 Years of Experience 53 Years of Experience 22 Years of Experience 51 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English Speaks English Speaks English
Harvard , ILRockford , ILMilwaukee , WIRockford , IL
Med School: University of Mo-Kansas City Sch of Med, Kansas City Mo Med School: Baylor College Of Medicine Med School: University Of Wisconsin School Of Medicine & Public Health Med School: Warren Alpert Medical School Of Brown University
Current Profile
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Insurance Plans Accepted by James J. Greenberg

  • Allegiance Life and Health
  • CHAMPVA
  • Cigna
  • Mercy Care
  • Molina Healthcare
  • Molina Healthcare - Medicaid (Managed)
  • UnitedHealthcare
  • WPS Health Plan
  • Zing Health

Medical Specialties

James J. Greenberg has the following specialty

Certifications, License, & Education

35 Years Experience

James J. Greenberg holds active and expired medical licenses in the states of Wisconsin and Illinois. They are board certified in Surgery by the American Board of Surgery.

Board Certifications

Board certified in Surgery by the American Board of Surgery.

Medical License

Medical Doctor with an active medical license in the state of Wisconsin that expires in 2027 and an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Residency

Completed their residency at Loyola Univ Med Ctr, General Surgery and Loyola University Med Center in 1992.

Medical School

Graduated from University of Mo-Kansas City Sch of Med, Kansas City Mo in 1991.

NPI Number

James J. Greenberg's NPI number is 1164412136.

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Frequently Asked Questions

Is James Greenberg accepting new patients?
James Greenberg is accepting new patients on Vitals. View James Greenberg's profile on Vitals to make an appointment.
Where is James Greenberg's office located?
James Greenberg's office is located at 901 Grant St., Harvard, IL, 60033.
How can I make an appointment with James Greenberg?
You can find contact information for James Greenberg here on Vitals.
What languages does James Greenberg speak?
James Greenberg speaks English.
Which hospitals is James Greenberg affiliated with?
James Greenberg is affiliated with Mercyhealth Hospital And Medical Center Harvard.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Board certification bodies (such as ABMS)
  • Healthcare system and provider network data

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