Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

David Shaun Aghassi, MD

Individual provider Dermatology Physician · NPI 1285698936

David Shaun Aghassi, MD practises Dermatology in Wellesley, Massachusetts. Graduated from Yale University School of Medicine in 1994, 32 years ago. Practices with Newton Wellesley Dermatology Associates, a 9-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
32
Trained at
Yale University School of Medicine
Licensed in
MA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

65 Walnut St Ste 520
Wellesley, MA 02481 Not confirmed with CMS for 15 years — call before visiting
Phone: (781) 237-3500
Fax: (781) 237-7867
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence 157066 (MA)

Record details

NPI number1285698936
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 12, 2006
Last updated in NPPESDecember 13, 2010

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice Newton Wellesley Dermatology Associates — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1,128 times · 94th percentile
Skin biopsy 331 times · 92nd percentile
Melanoma (skin cancer) excision 48 times · 86th percentile
Removal or shaving of skin growth 39 times · 77th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,074
Services billed 4,096 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Newton Wellesley Dermatology Associates

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Wellesley