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

Dr. Marjorie Antoinette Janvier

Individual provider Internal Medicine Physician · NPI 1598931628

Dr. Marjorie Antoinette Janvier practises Internal Medicine in Roxbury, Massachusetts. Graduated from Tufts University School of Medicine in 2007, 19 years ago. Practices with Uphams Corner Health Committee Inc, a 27-clinician group and accepts Medicare assignment. Licensed in Massachusetts and Michigan.

Years since qualifying
19
Trained at
Tufts University School of Medicine
Licensed in
MA, MI
In the registry since
2008
Specialties on file
3
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Practice location Address checks out

45 Dimock St
Roxbury, MA 02119-1208
Phone: (617) 442-8800
Fax: (617) 541-8472
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 232734 (MA)
Electrodiagnostic Medicine Physician Taxonomy 204R00000X · Licence 245681 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 245681 (MA)

Record details

NPI number1598931628
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedMay 8, 2008
Last updated in NPPESFebruary 25, 2020
Certification dateFebruary 25, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesINFECTIOUS DISEASE
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice Uphams Corner Health Committee Inc — 27 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients49
Services billed 63 a service is one billed item, such as a visit, a test or a procedure
Average patient age65

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 Uphams Corner Health Committee Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 27 clinicians in the practice; 12 are shown here.

Other providers in Roxbury