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

Michael M Halassa, MBBS, PHD

Individual provider Psychiatry Physician · NPI 1811124639

Michael M Halassa, MBBS, PHD is a Psychiatry in Boston, Massachusetts. Qualified in 2004, 22 years ago. Practices with Uhs of Fuller Inc, a 23-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
22
Licensed in
MA
In the registry since
2009
What do these letters mean?
MBBS — Bachelor of Medicine, Bachelor of Surgery
The medical degree awarded in the UK, India and many Commonwealth countries; equivalent to an MD.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Partly verified

Some contact details are missing from the federal record.

Massachusetts General Hospital 55 Fruit St
Boston, MA 02114
Phone: (617) 726-2066
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (2)

  • 386 Stanley St, Fall River, MA 02720-6009 — (508) 679-5222
  • 200 May St, South Attleboro, MA 02703-5520 — (508) 761-8500

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence L-240799 (MA)

Record details

NPI number1811124639
Entity typeIndividual (Type 1)
GenderMale
Credentials MBBS , PHD
Sole proprietorNo
NPI enumeratedJune 19, 2009
Last updated in NPPESSeptember 23, 2025
Certification dateSeptember 23, 2025

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Uhs Of Fuller Inc — 23 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Boston