Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Stephen Mackler, MD

Individual provider Internal Medicine Physician · NPI 1669442745

Stephen Mackler, MD practises Internal Medicine in Dartmouth, Massachusetts. Graduated from Tufts University School of Medicine in 1981, 45 years ago. Practices with Lifespan Physician Group of Massachusetts Inc, a 457-clinician group and works from 2 locations. Licensed in Massachusetts.

Years since qualifying
45
Trained at
Tufts University School of Medicine
Licensed in
MA
In the registry since
2006
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

535 Faunce Corner Rd
Dartmouth, MA 02747-1242
Phone: (508) 996-3991
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 535 Faunce Corner Road, North Dartmouth, MA 02747 — (508) 996-3991

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 51204 (MA)

Record details

NPI number1669442745
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 23, 2006
Last updated in NPPESApril 24, 2023
Certification dateApril 24, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1981 (45 years in practice)
Group practice Lifespan Physician Group Of Massachusetts Inc — 457 clinicians
Accepts Medicare assignment Not indicated

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 patients568
Services billed 6,002 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 Lifespan Physician Group of Massachusetts Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 457 clinicians in the practice; 12 are shown here.

Other providers in Dartmouth