Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Jonathan Peter Nass, MD

Individual provider Internal Medicine Physician · NPI 1558587998

Jonathan Peter Nass, MD is a Gastroenterology in South Weymouth, Massachusetts. Graduated from Tulane University School of Medicine in 2005, 21 years ago. Practices with South Shore Medical Center, Inc, a 175-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Louisiana, Massachusetts and Rhode Island.

Years since qualifying
21
Trained at
Tulane University School of Medicine
Licensed in
LA, MA, RI
In the registry since
2007
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1085 Main St
South Weymouth, MA 02190-1547
Phone: (781) 331-2922
Fax: (781) 335-5702
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 252551 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence LP00455 (RI)
Gastroenterology Physician Taxonomy 207RG0100X · Licence MD.202069 (LA)

Record details

NPI number1558587998
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 17, 2007
Last updated in NPPESDecember 18, 2019
Certification dateDecember 18, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolTULANE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice South Shore Medical Center, Inc. — 175 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in South Weymouth