Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Ian Barbash

Individual provider Internal Medicine Physician · NPI 1922328392

Ian Barbash practises Internal Medicine in Boston, Massachusetts. Graduated from Harvard Medical School in 2010, 16 years ago. Practices with University of Pittsburgh Physicians, a 4,127-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
16
Trained at
Harvard Medical School
Licensed in
MA
In the registry since
2010
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Practice location Partly verified

Some contact details are missing from the federal record.

Massachusetts General Hospital 55 Fruit St
Boston, MA 02114
Phone: (617) 726-2865
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence L-244091 (MA)

Record details

NPI number1922328392
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJune 8, 2010
Last updated in NPPESSeptember 3, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesCRITICAL CARE (INTENSIVISTS), PULMONARY DISEASE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 2010 (16 years in practice)
Group practice University Of Pittsburgh Physicians — 4127 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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 patients80
Services billed 336 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

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 University of Pittsburgh Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 4127 clinicians in the practice; 12 are shown here.

Other providers in Boston