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

Rong J Guan, MD LLC

Organization Gastroenterology Physician · NPI 1003169327

Rong J Guan, MD LLC provides Gastroenterology Physician services in Boston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2012.

Licensed in
MA
In the registry since
2012
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

30 Kneeland St Fl 5
Boston, MA 02111-1528 Not confirmed with CMS for 13 years — call before visiting
Phone: (617) 290-9881
Fax: (617) 350-6555
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 150086 (MA)

Record details

NPI number1003169327
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Rong Guan — Member · (617) 290-9881
NPI enumeratedOctober 24, 2012
Last updated in NPPESNovember 2, 2012
Mailing address30 Kneeland Street, 5th Floor, Boston, MA 20111-1528

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