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

Mrs. Margaret Ann Vallen Mashikian, MD

Individual provider Allergy Physician · NPI 1881751394

Mrs. Margaret Ann Vallen Mashikian, MD is an Allergy/Immunology in South Weymouth, Massachusetts. Graduated from Drexel University College of Medicine in 1986, 40 years ago. Offers telehealth. Licensed in Massachusetts.

Years since qualifying
40
Trained at
Drexel University College of Medicine
Licensed in
MA
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

851 Main St Ste 21
South Weymouth, MA 02190-1612
Phone: (781) 331-1060
Show map & directions

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

Specialties & licences

Allergy Physician (primary) Taxonomy 207KA0200X · Licence 075928 (MA)

Record details

NPI number1881751394
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 3, 2007
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolDREXEL UNIVERSITY COLLEGE OF MEDICINE
Graduated 1986 (40 years in practice)
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services