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

Dr. Gerald Ross Marx, MD

Individual provider Pediatric Cardiology Physician · NPI 1063403384

Dr. Gerald Ross Marx, MD is a Pediatric Cardiology Physician in Boston, Massachusetts. Works from 2 locations. Licensed in Massachusetts and Texas.

Licensed in
MA, TX
In the registry since
2005
Specialties on file
2
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

300 Longwood Ave
Boston, MA 02115-5724
Phone: (617) 355-0039
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 333 N Santa Rosa, San Antonio, TX 78207-3108 — (210) 704-3030

Specialties & licences

Pediatric Cardiology Physician (primary) Taxonomy 2080P0202X · Licence W7367 (TX)
Pediatric Cardiology Physician Taxonomy 2080P0202X · Licence 60399 (MA)

Record details

NPI number1063403384
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 4, 2005
Last updated in NPPESJune 29, 2026
Certification dateJune 29, 2026
Mailing addressPo Box 9135, Att:Sharon Silva, Brookline, MA 02446-9135

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