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

Dr. Karen Ashby Mathewson, MD

Individual provider Psychiatry Physician · NPI 1407054562

Dr. Karen Ashby Mathewson, MD is a Psychiatry Physician in New York, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2007
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

462 1st Ave Nbv 20N11
New York, NY 10016-9196 Not confirmed with CMS for 19 years — call before visiting
Phone: (212) 562-4742
Show map & directions

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

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 243439 (NY)

Record details

NPI number1407054562
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 10, 2007
Last updated in NPPESJuly 10, 2007

Other providers in New York