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

Christopher R Mackay

Individual provider Internal Medicine Physician · NPI 1427614163

Christopher R Mackay is an Internal Medicine in Boston, Massachusetts. Graduated from University of Massachusetts Medical School in 2019, 7 years ago. Practices with Brigham and Womens Physicians Organization Inc, a 2,916-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts and Rhode Island.

Years since qualifying
7
Trained at
University of Massachusetts Medical School
Licensed in
MA, RI
In the registry since
2019
Specialties on file
2
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Practice location Address checks out

450 Brookline Ave
Boston, MA 02215-5450
Phone: (617) 632-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 75 Francis St, Boston, MA 02115-6106 — (617) 732-0055

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 292675 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence LP04518 (RI)

Record details

NPI number1427614163
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedMay 17, 2019
Last updated in NPPESJune 26, 2026
Certification dateJune 26, 2026
Mailing address75 Francis St, Boston, MA 02115-6106

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 2019 (7 years in practice)
Group practice Brigham And Womens Physicians Organization Inc — 2916 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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