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

Dr. Keith Austin Marill, MD

Individual provider Emergency Medicine Physician · NPI 1073503371

Dr. Keith Austin Marill, MD is an Emergency Medicine in Boston, Massachusetts. Graduated from University of Rochester School of Medicine and Dentistry in 1988, 38 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group and accepts Medicare assignment. Licensed in Massachusetts and Pennsylvania.

Years since qualifying
38
Trained at
University of Rochester School of Medicine and Dentistry
Licensed in
MA, PA
In the registry since
2005
Specialties on file
3
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 St
Boston, MA 02114-2696
Phone: (617) 643-8595
Fax: (617) 724-0917
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence MD448123 (PA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 214889 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 214889 (MA)

Record details

NPI number1073503371
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 27, 2005
Last updated in NPPESMay 24, 2019
Mailing address55 Fruit St, Boston, MA 02114-2696

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF ROCHESTER SCHOOL OF MEDICINE AND DENTISTRY
Graduated 1988 (38 years in practice)
Group practice Massachusetts General Physicians Organization Inc — 3484 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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