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

Dr. John M Sloan, MD

Individual provider Medical Oncology Physician · NPI 1659345320

Dr. John M Sloan, MD is a Hematology/Oncology in Boston, Massachusetts. Graduated from Yale University School of Medicine in 2001, 25 years ago. Practices with Evans Medical Foundation Inc, a 526-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
25
Trained at
Yale University School of Medicine
Licensed in
MA
In the registry since
2006
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

830 Harrison Ave 3rd Fl Moakley Bldg
Boston, MA 02118-2905
Phone: (617) 638-6428
Fax: (617) 638-5756
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology (Internal Medicine) Physician (primary) Taxonomy 207RH0000X · Licence 224033 (MA)
Medical Oncology Physician Taxonomy 207RX0202X · Licence 224033 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 224033 (MA)

Record details

NPI number1659345320
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 17, 2006
Last updated in NPPESMay 20, 2026
Certification dateMay 20, 2026

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2001 (25 years in practice)
Group practice Evans Medical Foundation Inc — 526 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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