Summary

Dr. Jonathan Nass is a gastroenterologist and internal medicine physician who earned his medical degree from Tulane University School of Medicine. With 21 years of experience, he brings extensive knowledge to the diagnosis and treatment of digestive system disorders. Dr. Nass is fluent in Spanish, Portuguese, and English, allowing him to care for patients from diverse backgrounds.

Dr. Nass practices at multiple locations throughout South Weymouth, Norwell, and the surrounding areas, including Saint Annes Hospital and South Shore Hospital. He specializes in treating conditions such as colon polyps, abdominal pain, and dyspepsia. His expertise includes performing pathology tests and surgical pathology procedures. Patients have rated Dr. Nass an average of 4.1 out of 5 stars, reflecting their confidence in his care.

AI-generated from data on this provider profile.

Quick Facts

  • accepting new patients
  • 4.1
  • 21 years of experience
  • 31 insurance plans accepted
  • speaks Spanish, Portuguese, English
  • Tulane University School Of Medicine
  • 2 written reviews
  • 2 specialties
  • 11 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 3 office locations
  • Male

Office Locations

Dr. Jonathan Peter Nass has 3 locations

South Suburban Gastroenterology

1085 Main StSouth Weymouth, MA 02190
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

South Shore Hospital

55 Fogg RdSouth Weymouth, MA 02190

South Shore Medical Center

143 Longwater DrNorwell, MA 02061
Mon7:30 am - 9:00 pm
Tue7:30 am - 9:00 pm
Wed7:30 am - 9:00 pm
Thu7:30 am - 9:00 pm
Fri7:30 am - 9:00 pm
Sat9:30 am - 5:00 pm
Sun9:30 am - 5:00 pm

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Dr. Jonathan Peter Nass, MD
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Dr. Jonathan Peter Nass, MDTheresa Obonyano, APRNJan Seiler, APRNAshley Anderson, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.1 
21 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks Spanish, Portuguese, English Speaks English Speaks English Speaks English
South Weymouth , MASACRAMENTO , CAMontgomery , ALSACRAMENTO , CA
Med School: Tulane University School Of Medicine Med School: The University of Texas Health Science Center at Houston Med School: Georgia State University Med School: East Tennessee State University - Quillen College of Medicine
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. Jonathan Peter Nass

  • Accepts Medicare
  • Accepts Medicaid
  • Aetna
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - PPO
  • Blue Cross Blue Shield of Massachusetts
  • CBA Blue
  • Cigna
  • Commonwealth Care Alliance
  • Fallon Community Health Plan (FCHP)
  • Harvard Pilgrim Health Care
  • Health New England
  • HealthPartners
  • HealthPartners - Medicaid (Managed)
  • Mass General Brigham Health Plan
  • MassHealth - Medicaid (Managed)
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicare
  • Meritain Health
  • Neighborhood Health Plan
  • Senior Whole Health
  • Senior Whole Health - Medicare (Advantage HMO)
  • Transamerica
  • Tricare
  • Tufts Health Plan
  • UniCare
  • UnitedHealthcare
  • UnitedHealthcare - Medicare
  • Well Sense Health Plan
  • Wellcare

Medical Specialties

Dr. Jonathan Peter Nass has the following 2 specialties

Specialty Expertise

Dr. Jonathan Peter Nass has the following 11 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Hemorrhoids
  • Hepatitis C
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

21 Years Experience

MEDICAL LICENSE

Medical Doctor, Massachusetts, 2026, Active

EDUCATION & TRAINING

Medical School

Tulane University School Of MedicineGraduated in 2008
Tulane University School Of MedicineGraduated in 2005

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Frequently Asked Questions

Which hospitals is Dr. Jonathan Nass affiliated with?
Dr. Jonathan Nass is affiliated with Saint Annes Hospital.
What languages does Dr. Jonathan Nass speak?
Dr. Jonathan Nass speaks Spanish, Portuguese, and English.
Does Dr. Jonathan Nass accept my insurance?
You can see the insurance plans that Dr. Jonathan Nass accepts on their Vitals profile.
Is Dr. Jonathan Nass accepting new patients?
Dr. Jonathan Nass is accepting new patients on Vitals. View Dr. Jonathan Nass's profile on Vitals to make an appointment.
Where is Dr. Jonathan Nass's office located?
Dr. Jonathan Nass's office is located at 1085 Main St, South Weymouth, MA, 02190.

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