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

John P. Ryan, MD

Individual provider Pediatrics Physician · NPI 1487016622

John P. Ryan, MD is a Pediatrics Physician in Portsmouth, New Hampshire. Practices as a sole proprietor. Licensed in New Hampshire.

Licensed in
NH
In the registry since
2016
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 101
Portsmouth, NH 03801-4102
Phone: (603) 436-7171
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 21475 (NH)

Record details

NPI number1487016622
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 27, 2016
Last updated in NPPESJuly 30, 2021
Certification dateJuly 30, 2021
Mailing address330 Borthwick Ave Ste 101, Portsmouth, NH 03801-4102

Other providers in Portsmouth