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

Dr. Marylyn Virginia Grondin, MD

Individual provider Gastroenterology Physician · NPI 1841266327

Dr. Marylyn Virginia Grondin, MD is a Gastroenterology Physician in Portsmouth, New Hampshire. Licensed in New Hampshire. Registered with an NPI since 2006.

Licensed in
NH
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

330 Borthwick Ave Ste 311
Portsmouth, NH 03801-4174
Phone: (603) 433-2488
Fax: (603) 433-4649
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 8703 (NH)

Record details

NPI number1841266327
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 24, 2006
Last updated in NPPESFebruary 13, 2012

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