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

Dr. Karen Nguyen Wu, MD

Individual provider Anatomic Pathology & Clinical Pathology Physician · NPI 1245441310

Dr. Karen Nguyen Wu, MD is a Pathology in Portsmouth, New Hampshire. Qualified in 2006, 20 years ago. Practices with Optima Dermatology LLC, a 74-clinician group and accepts Medicare assignment. Licensed in New Hampshire and Pennsylvania.

Years since qualifying
20
Licensed in
NH, PA
In the registry since
2007
Specialties on file
2
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

111 New Hampshire Ave Ste 3
Portsmouth, NH 03801-2864
Phone: (603) 988-0951
Fax: (603) 441-3722
Show map & directions

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

Specialties & licences

Dermatopathology (Pathology) Physician (primary) Taxonomy 207ZD0900X · Licence 16057 (NH)
Anatomic Pathology & Clinical Pathology Physician Taxonomy 207ZP0102X · Licence MD438668 (PA)

Record details

NPI number1245441310
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 24, 2007
Last updated in NPPESJanuary 31, 2024
Certification dateJanuary 31, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPATHOLOGY
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice Optima Dermatology Llc — 74 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Portsmouth