25 Allergy & Immunology (Internal Medicine) providers practice in Massachusetts, including 18 (72%) offering telehealth. The largest concentration is in Boston. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
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From CMS Medicare enrollment records covering 24 of the 25 providers listed here (96%). Providers who do not bill Medicare are not included in these figures.
| Group (as registered with Medicare) | Allergists (Internal Medicine) | All clinicians in group | Main city |
| Massachusetts General Physicians Organization Inc. | 5 | 3,494 | Boston |
| Brigham and Womens Physicians Organization Inc. | 4 | 2,931 | Boston |
| Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc. | 4 | 1,693 | Boston |
| Lahey Clinic Inc. | 2 | 1,381 | Burlington |
| Evans Medical Foundation Inc. | 2 | 525 | Boston |
| Hospital | City | Ownership | CMS star rating | Allergists (Internal Medicine) affiliated |
| Brigham and Women's Hospital | Boston | Nonprofit | 5 of 5 | 7 |
| Beth Israel Deaconess Medical Center | Boston | Nonprofit | 3 of 5 | 5 |
| Massachusetts General Hospital | Boston | Nonprofit | 5 of 5 | 4 |
| North Shore Medical Center - | Salem | Nonprofit | 5 of 5 | 3 |
| Boston Medical Center | Boston | Nonprofit | 3 of 5 | 2 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
There are 25 Allergy & Immunology (Internal Medicine) providers with active NPI records practicing in Massachusetts, according to federal NPPES data refreshed monthly.
Yes. 18 of the 25 Allergy & Immunology (Internal Medicine) providers in Massachusetts (about 72%) report offering telehealth services in CMS data.
Boston (16), Chestnut Hill (3), Dartmouth (1) have the highest concentration of Allergy & Immunology (Internal Medicine) providers in Massachusetts.
12 of 25 Allergy & Immunology (Internal Medicine) providers in Massachusetts (48%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Among 24 Allergists (Internal Medicine) in Massachusetts enrolled in Medicare, 8% bill through a solo or small practice with fewer than 10 clinicians, 4% through a mid-size group of 10 to 99, and 88% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
According to CMS facility affiliation records, the Massachusetts hospitals where the most Allergists (Internal Medicine) hold privileges are Brigham and Women's Hospital in Boston; Beth Israel Deaconess Medical Center in Boston; Massachusetts General Hospital in Boston.
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