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

Charles De Guzman, MD

Individual provider Internal Medicine Physician · NPI 1134878705

Charles De Guzman, MD is an Internal Medicine in Boston, Massachusetts. Graduated from Loma Linda University School of Medicine in 2022, 4 years ago. Practices with Cambridge Public Health Commission, a 649-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
4
Trained at
Loma Linda University School of Medicine
Licensed in
MA
In the registry since
2022
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
Boston, MA 02114-2621
Phone: (617) 724-3874
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1493 Cambridge St, Cambridge, MA 02139-1047 — (617) 665-1000

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 1022888 (MA)
Hospitalist Physician Taxonomy 208M00000X · Licence 1022888 (MA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (MA)

Record details

NPI number1134878705
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 21, 2022
Last updated in NPPESMarch 20, 2026
Certification dateMarch 20, 2026
Mailing address1493 Cambridge St, Cambridge, MA 02139-1047

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolLOMA LINDA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2022 (4 years in practice)
Group practice Cambridge Public Health Commission — 649 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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