Summary

Dr. John Dalena is a gastroenterologist and internal medicine physician who has dedicated 41 years to caring for patients with digestive health concerns. He earned his medical degree from Rutgers New Jersey Medical School and completed his residency at Mount Sinai Medical Center. Dr. Dalena is fluent in both Spanish and English, allowing him to serve a diverse patient population.

Dr. Dalena practices at Morristown Medical Center and maintains locations in Florham Park and Morristown, New Jersey. He specializes in treating conditions such as colon polyps, Crohn's disease, and diverticular disease. His expertise includes performing colonoscopies and lower GI endoscopy procedures to diagnose and monitor digestive disorders. Patients consistently rate him highly for his care, giving him an average rating of 4.9 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.9
  • 41 years of experience
  • speaks Spanish, English
  • Mount Sinai Medical Center
  • 254 written reviews
  • 2 specialties
  • 11 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. John Michael Dalena has 4 locations

Summit Health

140 Park AveFlorham Park, NJ 07932
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

Atlantic Gastroenterology at Summit Medical Group

140 Park Ave Fl 3Florham Park, NJ 07932
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

Morristown Medical Center

100 Madison AveMorristown, NJ 07960

Dr. John Michael Dalena

140 Park Ave # 3Florham Park, NJ 07932

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Dr. John Michael Dalena, MDDr. Qin Rao, MDDr. Weidan Zhao, MDDr. Aga Nagorna
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.9 
41 Years of Experience 12 Years of Experience 7 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available No Virtual Visit Option
Speaks Spanish, English Speaks English Speaks English
Florham Park , NJNEW YORK , NYNEW YORK , NYBROOKLYN , NY
Med School: Rutgers New Jersey Medical School Med School: State University of New York Med School: University of Toledo Med School: Albert Einstein College of Medicine
Current Profile
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Insurance Plans Accepted by Dr. John Michael Dalena

  • Accepts Medicare

Medical Specialties

Dr. John Michael Dalena has the following 2 specialties

Specialty Expertise

Dr. John Michael Dalena has the following 11 areas of expertise

  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Anemia
  • Colonoscopy
  • Constipation
  • Digestive System Diseases
  • Endoscopy (Endoscopic Surgery)
  • Hepatitis C
  • Inflammatory Bowel Diseases (IBD)
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

41 Years Experience

Dr. John Michael Dalena holds an active medical license in the state of New Jersey.

Medical License

Medical Doctor with an active medical license in the state of New Jersey that expires in 2027.

Education & Training

Residency

Completed their residency at Mount Sinai Medical Center.

Medical School

Graduated from Rutgers New Jersey Medical School in 1985.

NPI Number

Dr. Dalena's NPI number is 1215944582.

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Frequently Asked Questions

Is Dr. John Dalena accepting new patients?
Dr. John Dalena is accepting new patients on Vitals. View Dr. John Dalena's profile on Vitals to make an appointment.
Where is Dr. John Dalena's office located?
Dr. John Dalena's office is located at 140 Park Ave, Florham Park, NJ, 07932.
How can I make an appointment with Dr. John Dalena?
You can find contact information for Dr. John Dalena here on Vitals.
Does Dr. John Dalena accept virtual/telehealth appointments?
Dr. John Dalena has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
What languages does Dr. John Dalena speak?
Dr. John Dalena speaks Spanish and English.

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