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

Mr. Ian M Rosenthal, MD

Individual provider Dermatopathology Physician · NPI 1316218704

Mr. Ian M Rosenthal, MD is a Pathology in Portsmouth, New Hampshire. Graduated from Johns Hopkins University School of Medicine in 2012, 14 years ago. Practices with Optima Dermatology LLC, a 74-clinician group and accepts Medicare assignment. Licensed in New Hampshire and Ohio.

Years since qualifying
14
Trained at
Johns Hopkins University School of Medicine
Licensed in
NH, OH
In the registry since
2012
Specialties on file
3
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 Physician (primary) Taxonomy 207ND0900X · Licence 35.128425 (OH)
Dermatopathology Physician Taxonomy 207ND0900X · Licence 23711 (NH)
Anatomic Pathology & Clinical Pathology Physician Taxonomy 207ZP0102X · Licence 23711 (NH)

Record details

NPI number1316218704
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 18, 2012
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 schoolJOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2012 (14 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