Summary

Dr. Prakash Viswanathan is a gastroenterologist who specializes in diagnosing and treating digestive system disorders. He earned his medical degree from St. Georges University School of Medicine and completed his residency at Stony Brook University Medical Center. With 21 years of experience in gastroenterology, Dr. Viswanathan has developed extensive expertise in complex digestive conditions. He is fluent in both Spanish and English.

Dr. Viswanathan practices at NYU Langone Ambulatory Care in Patchogue, NY, and maintains affiliations with North Memorial Health Robbinsdale Hospital. He treats serious conditions including acute pancreatitis and autoimmune pancreatitis, as well as cholangiocarcinoma. His procedural expertise includes advanced endoscopy techniques and cancer screening procedures. Patients rate Dr. Viswanathan 4.5 out of 5 stars for his care.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.5
  • 21 years of experience
  • 5 insurance plans accepted
  • speaks Spanish, English
  • Stony Brook University Medical Center
  • 3 written reviews
  • 2 specialties
  • 9 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 1 office location
  • Male

Patients’ Perspective

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

Office Location

NYU Langone Ambulatory Care Patchogue

196 E Main St Bldg 5-6 Ste HPatchogue, NY 11772

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Prakash Viswanathan, MDDr. Daniel Perl, MDDr. Kristen Kyong Lee, MDRebecca Humphries, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.5 
21 Years of Experience 11 Years of Experience 17 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks Spanish, English Speaks English Speaks English Speaks English
Patchogue , NYNEW YORK , NYNEW YORK , NYSACRAMENTO , CA
Med School: St Georges University School Of Medicine Med School: Icahn School Of Medicine At Mount Sinai Med School: Cornell University Med School: Emory University
Current Profile
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Insurance Plans Accepted by Prakash Viswanathan

  • Accepts Medicare
  • Aetna HMO
  • Aetna Indemnity
  • Aetna Medicare
  • Local 1199 - NYU Hospital Member Choice
  • Local 1199 PPO

Medical Specialties

Prakash Viswanathan has the following 2 specialties

Specialty Expertise

Prakash Viswanathan has the following 9 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Gastroenterologist
  • Hemorrhoids
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

21 Years Experience

Prakash Viswanathan holds an expired medical license in the state of New York.

Medical License

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

Education & Training

Residency

Completed their residency at Stony Brook University Medical Center.

Medical School

Graduated from St Georges University School Of Medicine in 2005.

NPI Number

Prakash Viswanathan's NPI number is 1649428574.

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Frequently Asked Questions

Does Prakash Viswanathan accept virtual/telehealth appointments?
Prakash Viswanathan has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does Prakash Viswanathan accept my insurance?
You can see the insurance plans that Prakash Viswanathan accepts on their Vitals profile.
Is Prakash Viswanathan accepting new patients?
Prakash Viswanathan is accepting new patients on Vitals. View Prakash Viswanathan's profile on Vitals to make an appointment.
Which hospitals is Prakash Viswanathan affiliated with?
Prakash Viswanathan is affiliated with North Memorial Health Robbinsdale Hospital.
Where is Prakash Viswanathan's office located?
Prakash Viswanathan's office is located at 196 E Main St Bldg 5-6 Ste H, Patchogue, NY, 11772.

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