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

Dr. Elizabeth Joanne Herskovits Castillo, MDPHD

Individual provider Hospitalist Physician · NPI 1932176443

Dr. Elizabeth Joanne Herskovits Castillo, MDPHD is a Geriatric Medicine in Boston, Massachusetts. Graduated from University of California, San Francisco School of Medicine in 2002, 24 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maine and North Carolina.

Years since qualifying
24
Trained at
University of California, San Francisco School of Medicine
Licensed in
ME, NC
In the registry since
2006
Specialties on file
4
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Practice location Address checks out

55 Fruit St
Boston, MA 02114-2621
Phone: (617) 726-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 311 Service Rd, East Sandwich, MA 02537-1370 — (508) 833-4000

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence MD22347 (ME)
Hospitalist Physician Taxonomy 208M00000X · Licence 2006-01812 (NC)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X · Licence 2006-01812 (NC)
Internal Medicine Physician Taxonomy 207R00000X · Licence 2006-01812 (NC)

Record details

NPI number1932176443
Entity typeIndividual (Type 1)
GenderFemale
Credentials MDPHD
Sole proprietorNo
NPI enumeratedMarch 2, 2006
Last updated in NPPESFebruary 9, 2026
Certification dateFebruary 9, 2026

Medicare enrollment

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

Medicare specialtyGERIATRIC MEDICINE
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice Massachusetts General Physicians Organization Inc — 3484 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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