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

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1932693686

Regan Elizabeth Roat, MD, PHD practises Endocrinology in Boston, Massachusetts. Qualified in 2018, 8 years ago. Practices with Joslin Clinic Inc, a 54-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
8
Licensed in
MA
In the registry since
2018
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1 Joslin Pl
Boston, MA 02215-5394
Phone: (617) 309-2400
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 133 Brookline Ave, Boston, MA 02215-3904 — (617) 421-1000
  • 110 Francis St Ste 6a, Boston, MA 02215-5501 — (617) 667-9344

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 1018168 (MA)

Record details

NPI number1932693686
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJune 17, 2018
Last updated in NPPESJuly 26, 2024
Certification dateJuly 26, 2024

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Joslin Clinic Inc — 54 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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 patients39
Services billed 177 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 Joslin Clinic Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 54 clinicians in the practice; 12 are shown here.

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