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

Dr. Leon M Ptaszek, MDPHD

Individual provider Internal Medicine Physician · NPI 1841277175

Dr. Leon M Ptaszek, MDPHD is a Cardiac Electrophysiology in Boston, Massachusetts. Graduated from Icahn School of Medicine at Mount Sinai in 2003, 23 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
23
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
MA
In the registry since
2005
Specialties on file
3

Practice location Address checks out

55 Fruit Street Grb 800 Massachusetts General Hospital
Boston, MA 02114
Phone: (617) 726-2890
Fax: (617) 724-6767
Show map & directions

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

Specialties & licences

Clinical Cardiac Electrophysiology Physician (primary) Taxonomy 207RC0001X · Licence 223624 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 223624 (MA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 223624 (MA)

Record details

NPI number1841277175
Entity typeIndividual (Type 1)
GenderMale
Credentials MDPHD
Sole proprietorNo
NPI enumeratedDecember 28, 2005
Last updated in NPPESMay 9, 2018

Medicare enrollment

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

Medicare specialtyCARDIAC ELECTROPHYSIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY), INTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 2003 (23 years in practice)
Group practice Massachusetts General Physicians Organization Inc — 3484 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

Other providers in Boston