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

Katherine Mahar, NP, CNM

Individual provider Advanced Practice Midwife · NPI 1710347935

Katherine Mahar, NP, CNM is an Advanced Practice Midwife in Portsmouth, New Hampshire. Works from 3 locations. Licensed in Massachusetts, New Hampshire and Oregon.

Licensed in
MA, NH, OR
In the registry since
2016
Specialties on file
3
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.
CNM — Certified Nurse-Midwife
An advanced practice nurse who provides prenatal care and delivers babies.

See every abbreviation used in this directory →

Practice location Address checks out

67 Corporate Dr Ste 300
Portsmouth, NH 03801
Phone: (603) 610-8079
Show map & directions

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

Additional practice locations (2)

  • 15 Old Rollinsford Rd Ste 102, Dover, NH 03820-2869 — (603) 749-4963
  • 1535 State St, Salem, OR 97301-4255 — (503) 364-3787

Specialties & licences

Advanced Practice Midwife (primary) Taxonomy 367A00000X · Licence 201707271NP-PP (OR)
Advanced Practice Midwife Taxonomy 367A00000X · Licence RN2306517 (MA)
Advanced Practice Midwife Taxonomy 367A00000X · Licence 081947-23 (NH)

Record details

NPI number1710347935
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP , CNM
Sole proprietorNo
NPI enumeratedMarch 1, 2016
Last updated in NPPESMarch 17, 2020
Certification dateMarch 17, 2020

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