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

Dr. Erik Antonsen, MD

Individual provider Emergency Medicine Physician · NPI 1972745461

Dr. Erik Antonsen, MD is an Emergency Medicine in Boston, Massachusetts. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 2001, 25 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
25
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
TX
In the registry since
2009
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 02114-2621
Phone: (617) 724-4100
Show map & directions

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

Additional practice locations (1)

  • 1504 Ben Taub Loop, Houston, TX 77030 — (713) 873-8555

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence P6573 (TX)

Record details

NPI number1972745461
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 30, 2009
Last updated in NPPESJuly 15, 2024
Certification dateJuly 15, 2024
Mailing address2300 Richmond Ave Apt 340, Houston, TX 77098-3265

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 2001 (25 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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