NPPES file of Aug 9, 2026

Joslin Clinic in Boston, MA

This location of Joslin Clinic bills under NPI 1255574901, an organization record issued on Apr 10, 2009 with the primary taxonomy Clinic/Center. It is one of 2 NPIs registered under this name and one of 2 in Boston; each clinician who sees you there has their own NPI and license.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Organization recordNPPES, Aug 2026
1255574901
Legal name
Joslin Clinic
Entity
Type 2 · organization
Primary taxonomy
Clinic/Center 261Q00000X
Practice location
1 JOSLIN PL, Boston, MA 02215
Phone
617-732-2400
Enumerated
Apr 10, 2009
Record updated
Apr 10, 2009
Authorized official
Vice President Of Finance (title as filed)
Public record from the NPPES NPI Registry (open it on CMS). An NPI identifies who bills; it is not a facility license.

The other Boston NPI

  1. Joslin Clinic INC1 JOSLIN PL · issued Jun 20, 20061528003621

20 clinicians CMS lists with Joslin Clinic in Boston

  1. Adham Abdel Mottalib, MDEndocrinology, Diabetes & Metabolism Physician1740774892
  2. Lloyd Aiello, MD, PHDOphthalmology Physician1588622104
  3. Paul Arrigg, MDOphthalmology Physician1740268127
  4. Elizabeth Bashoff, MDEndocrinology, Diabetes & Metabolism Physician1851441612
  5. Florence Mavis Brown, MDEndocrinology, Diabetes & Metabolism Physician1578597316
  6. Deborah Butler, MSWClinical Social Worker1457382632
  7. Jerry Cavallerano, OD, PHDOptometrist1821020728
  8. Olga Ceron, MDOphthalmology Physician1639137532
  9. Ward FickweilerOphthalmology Physician1194316638
  10. Emily Freiner, NP-CFamily Nurse Practitioner1619351418
  11. Robert Gabbay, MDEndocrinology, Diabetes & Metabolism Physician1720036627
  12. Jason Gaglia, MDEndocrinology, Diabetes & Metabolism Physician1023098605
  13. Sarah Gatti, LICSWClinical Social Worker1407203516
  14. Elizabeth Halprin, MDEndocrinology, Diabetes & Metabolism Physician1275565798
  15. Osama Hamdy, MD, PHDEndocrinology, Diabetes & Metabolism Physician1902841596
  16. Susan Herzlinger Botein, MDInternal Medicine Physician1871691451
  17. Zoe Hristofilous, CNPNurse Practitioner1679948004
  18. Joyce Keady, PNP, RNPediatric Nurse Practitioner1043234727
  19. Fioralda Kico, AGNP-CPrimary Care Nurse Practitioner1497263974
  20. George King, MDEndocrinology, Diabetes & Metabolism Physician1669458816

Source: CMS Doctors and Clinicians group affiliations, matched by practice name and city.

All 2 Joslin Clinic NPIs

Every location registered under this name, in 1 city.

See every location

Checking an organization

  1. Confirm the business with the Massachusetts secretary of state.
  2. Check the HHS-OIG exclusion list for the organization.
  3. Verify each clinician on their own record and the state license search.

Common questions

Is an organization NPI a license?

No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.

Which Boston NPI should I use?

Ask the office which NPI it bills under; all 2 Boston NPIs are registered under the same name.

Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.