Summary

Dr. John Grenn is an internal medicine and pediatric physician who earned his medical degree from the University of Mississippi School of Medicine. With nine years of experience in practice, he provides comprehensive care for both adult and pediatric patients across a wide range of medical conditions.

Dr. Grenn practices at multiple locations throughout Jackson and Flowood, Mississippi, with affiliations including the University of Mississippi Medical Center, Children's of Mississippi Hospital, and Merit Health River Oaks. He treats patients with complex respiratory conditions like COPD and chronic bronchitis, as well as advanced kidney disease. His practice includes performing comprehensive diagnostic blood work and coordinating speech therapy services for patients who need specialized rehabilitation support.

AI-generated from data on this provider profile.

Quick Facts

  • accepting new patients
  • 9 years of experience
  • University Of Mississippi School Of Medicine
  • 2 specialties
  • 2 areas of expertise
  • 10 hospital affiliations
  • 5 office locations
  • Male

Office Locations

Dr. John Caleb Grenn has 5 locations

Wiser Hospital For Women And Infants

2500 N State StJackson, MS 39216

Childrens Of Mississippi Hospital

2500 N State StJackson, MS 39216

Merit Health River Oaks

1030 River Oaks DrFlowood, MS 39232

University Physicians Grants Ferry

1010 Lakeland PlFlowood, MS 39232
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Conerly Critical Care Hospital Ummc

2500 N State StJackson, MS 39216

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Dr. John Caleb Grenn, MD
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Dr. John Caleb Grenn, MDDr. Shanna Pettie, MDDr. Kenny Kim Robbins, MDDr. Kaisha Renada Griffin, MD
Internal MedicineInternal MedicineNeonatologyAdolescent Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
3.7 
9 Years of Experience 18 Years of Experience 43 Years of Experience 19 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English, Spanish Speaks English, Spanish
Jackson , MSJackson , MSFlowood , MSJackson , MS
Med School: University Of Mississippi School Of Medicine Med School: Wayne State University School Of Medicine Med School: University Of Mississippi School Of Medicine Med School: University Of Louisville School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. John Caleb Grenn

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

Medical Specialties

Dr. John Caleb Grenn has the following 2 specialties

Specialty Expertise

Dr. John Caleb Grenn has the following 2 areas of expertise

  • Internal Medicine/pediatrics
  • Pediatrics

Certifications, License, & Education

9 Years Experience

MEDICAL LICENSE

Medical Doctor, Mississippi, 2026, Active

EDUCATION & TRAINING

Medical School

University Of Mississippi School Of MedicineGraduated in 2017

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Frequently Asked Questions

Where is Dr. John Grenn's office located?
Dr. John Grenn's office is located at 2500 N State St, Jackson, MS, 39216.
Which hospitals is Dr. John Grenn affiliated with?
Dr. John Grenn is affiliated with University Of Mississippi Medical Center, Womans Hospital, Merit Health River Oaks, Wiser Hospital For Women And Infants, Conerly Critical Care Hospital Ummc, Post Acute Medical Specialty Hospital North Of Corpus Christi, Corpus Christi Medical Center Doctors Regional Hospital, Driscoll Childrens Hospital, Christus Spohn Hospital Corpus Christi Shoreline, and Childrens Of Mississippi Hospital.
Does Dr. John Grenn accept my insurance?
You can see the insurance plans that Dr. John Grenn accepts on their Vitals profile.
Is Dr. John Grenn accepting new patients?
Dr. John Grenn is accepting new patients on Vitals. View Dr. John Grenn's profile on Vitals to make an appointment.
Does Dr. John Grenn accept virtual/telehealth appointments?
Dr. John Grenn has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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