11 Allergy providers practice in New Hampshire. The largest concentration is in Portsmouth. 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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| Allergy in Portsmouth | 6 providers |
| Allergy in Lebanon | 2 providers |
| Allergy in Nashua | 1 providers |
| Allergy in Derry | 1 providers |
| Allergy in Manchester | 1 providers |
From CMS Medicare enrollment records covering 7 of the 11 providers listed here (64%). Providers who do not bill Medicare are not included in these figures.
| Group (as registered with Medicare) | Allergy Specialists | All clinicians in group | Main city |
| Allergy Associates of Nh PA | 4 | 4 | Portsmouth |
| Hospital | City | Ownership | CMS star rating | Allergy Specialists affiliated |
| Wentworth-Douglass Hospital | Dover | Nonprofit | 4 of 5 | 2 |
| Portsmouth Regional Hospital | Portsmouth | For-profit | 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 11 Allergy providers with active NPI records practicing in New Hampshire, according to federal NPPES data refreshed monthly.
Portsmouth (6), Lebanon (2), Nashua (1) have the highest concentration of Allergy providers in New Hampshire.
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.
According to CMS facility affiliation records, the New Hampshire hospitals where the most Allergy Specialists hold privileges are Wentworth-Douglass Hospital in Dover; Portsmouth Regional Hospital in Portsmouth.
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