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

Daniel Aaron Zlotoff, MD

Individual provider Internal Medicine Physician · NPI 1780943803

Daniel Aaron Zlotoff, MD practises Internal Medicine in Boston, Massachusetts. Graduated from Perelman School of Med at the University of Pennsylvania in 2012, 14 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and Pennsylvania.

Years since qualifying
14
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
MA, PA
In the registry since
2012
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 GRB8-813
Boston, MA 02114-2621
Phone: (203) 232-5694
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Advanced Heart Failure and Transplant Cardiology Physician (primary) Taxonomy 207RA0001X · Licence 262220 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence MT201235 (PA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 262220 (MA)

Record details

NPI number1780943803
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 9, 2012
Last updated in NPPESMarch 23, 2020
Certification dateMarch 23, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2012 (14 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 locations11 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients882
Services billed 2,013 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Massachusetts General Physicians Organization Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3484 clinicians in the practice; 12 are shown here.

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