Summary

Dr. Robert Mahoney is an internal medicine physician who specializes in hospital medicine, bringing nearly three decades of experience to patient care. He earned his medical degree from Washington University in St. Louis School of Medicine and completed his residency training at Washington University. Dr. Mahoney speaks both English and Spanish, helping him connect with a diverse patient population.

Dr. Mahoney practices at Barnes Jewish Hospital in Saint Louis, Missouri, and maintains affiliations with both Barnes Jewish Hospital and Shriners Hospitals for Children Saint Louis. His clinical expertise includes treating patients with heart failure and acute pancreatitis. He also performs therapeutic hypothermia procedures, which help protect the brain and other organs during critical medical situations.

Overview based on verified provider data

Quick Facts

  • 29 years of experience
  • speaks English, Spanish
  • Washington University
  • 2 specialties
  • 5 areas of expertise
  • 2 hospital affiliations
  • 1 office location
  • Male

Office Location

Barnes Jewish Hospital

1 Barnes Jewish Hospital PlzSaint Louis, MO 63110
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed

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Dr. Robert John Mahoney, MDEric HarkerDr. Siroth Charnond, MDDr. Mazhar Lakho, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients
3.2 
3.8 
29 Years of Experience 25 Years of Experience 31 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English Speaks English Speaks English
Saint Louis , MOLyons , COFlorissant , MOFairview Heights , IL
Med School: Washington University In St Louis School Of Medicine Med School: Duke University School Of Medicine Med School: University of Mo-Kansas City Sch of Med, Kansas City Mo Med School: Liaquat University of Medical & Health Sciences
Current Profile
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Insurance Plans Accepted by Dr. Robert John Mahoney

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

Medical Specialties

Dr. Robert John Mahoney has the following 2 specialties

Specialty Expertise

Dr. Robert John Mahoney has the following 5 areas of expertise

  • Chest Pain
  • Gastrointestinal Bleeding
  • Hospital Medicine
  • Meningitis
  • Pneumonia

Certifications, License, & Education

29 Years Experience

Dr. Robert John Mahoney holds an expired medical license in the state of Missouri.

Medical License

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

Education & Training

Residency

Completed their residency at Washington University.

Medical School

Graduated from Washington University In St Louis School Of Medicine in 1997.

NPI Number

Dr. Mahoney's NPI number is 1306869326.

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Frequently Asked Questions

Does Dr. Robert Mahoney accept my insurance?
You can see the insurance plans that Dr. Robert Mahoney accepts on their Vitals profile.
Is Dr. Robert Mahoney accepting new patients?
Dr. Robert Mahoney has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
What languages does Dr. Robert Mahoney speak?
Dr. Robert Mahoney speaks English and Spanish.
Which hospitals is Dr. Robert Mahoney affiliated with?
Dr. Robert Mahoney is affiliated with Barnes Jewish Hospital and Shriners Hospitals For Children Saint Louis.
Does Dr. Robert Mahoney accept virtual/telehealth appointments?
Dr. Robert Mahoney has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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