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

Mazen Nabil Nasrallah, MD

Individual provider Rheumatology Physician · NPI 1609210004

Mazen Nabil Nasrallah, MD is a Rheumatology in Boston, Massachusetts. Qualified in 2010, 16 years ago. Practices with Mass General Brigham Medical Group Northern Massachusetts Inc, a 819-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
16
Licensed in
MA
In the registry since
2013
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

55 Fruit Street Bullfinch
Boston, MA 02114
Phone: (617) 726-3165
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 274389 (MA)
Rheumatology Physician Taxonomy 207RR0500X · Licence 266134 (MA)

Record details

NPI number1609210004
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 29, 2013
Last updated in NPPESJuly 23, 2018

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Mass General Brigham Medical Group Northern Massachusetts Inc — 819 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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