Company lists · Data refreshed September 2026

Top 25 Rare disease companies based in the United States

RevenueBase identified 270 company matches for rare disease companies associated with the United States as of September 2026 and tracks 91,999 professional contacts across them, including 33,184 with verified work emails. Boston is the largest hub.

This list covers company matches for rare disease companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
270Companies
91,999Contacts tracked
33,184Verified emails
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The 25 largest rare disease companies based in the United States

Ranked by team size
Top 25 of 270 company matches for rare disease companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchTitusville, NJ, United StatesHQ recorded Sep 21, 202610001+26,637 contacts →

Exact match

“At Johnson & Johnson Innovative Medicine, we innovate with purpose, to lead where medicine is going.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 21, 202610001+17,217 contacts →

Exact match

“About Genentech We're passionate about finding solutions for people facing the world's most difficult-to-treat conditions.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchTarrytown, NY, United StatesHQ recorded Sep 21, 202610001+16,043 contacts →

Exact match

“At Regeneron we believe that when the right idea finds the right team, powerful change is possible.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchBoston, MA, United StatesHQ recorded Sep 21, 20261,001-5,0006,136 contacts →

Exact match

“Alexion, AstraZeneca Rare Disease is focused on pioneering new possibilities for the rare disease community.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchSan Rafael, CA, United StatesHQ recorded Sep 21, 20261,001-5,0003,943 contacts →

Exact match

“Founded in 1997, BioMarin is a global biotechnology company dedicated to transforming lives through genetic discovery.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchNovato, CA, United StatesHQ recorded Sep 21, 20261,001-5,0001,556 contacts →

Exact match

“Leading with purpose.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchBridgewater Township, NJ, United StatesHQ recorded Sep 21, 20261,001-5,0001,512 contacts →

Exact match

“Insmed is a people-rst global biopharmaceutical company striving to deliver rst- and best-in-class therapies to transform the lives of patients facing serious diseases.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchWarren, NJ, United StatesHQ recorded Sep 21, 2026501-1,0001,212 contacts →

Exact match

“PTC is a patient-centered biopharmaceutical company focused on discovering, developing & commercializing medicine for children and adults living with rare and serious disease.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchPalo Alto, CA, United StatesHQ recorded Sep 21, 2026501-1,000837 contacts →

Exact match

“We exist to bring transformative medicines to people living with genetic conditions.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchPasadena, CA, United StatesHQ recorded Sep 21, 2026501-1,000657 contacts →

Exact match

“Arrowhead Pharmaceuticals is a clinical stage, Nasdaq listed (ticker ARWR) company developing medicines that treat intractable diseases by silencing the genes that cause them.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchPrinceton, NJ, United StatesHQ recorded Sep 21, 2026501-1,000625 contacts →

Exact match

“ANI Pharmaceuticals, Inc.(Nasdaq: ANIP) is a diversified biopharmaceutical company committed to its mission of “Serving Patients, Improving Lives" by developing, manufacturing…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchCambridge, MA, United StatesHQ recorded Sep 21, 2026501-1,000603 contacts →

Exact match

“Agios is a commercial-stage biopharmaceutical company dedicated to redefining the future of rare disease treatment.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchPittsburgh, PA, United StatesHQ recorded Sep 21, 2026501-1,000582 contacts →

Exact match

“PANTHERx Rare makes rare disease care more hyper-personalized and less overwhelming by focusing relentlessly on each patient and each therapy.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchWashington, DC, United StatesHQ recorded Sep 21, 2026201-500575 contacts →

Exact match

“Vanda is a leading global biopharmaceutical company focused on the development and commercialization of innovative therapies to address high unmet medical needs and improve the…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchLincolnshire, IL, United StatesHQ recorded Sep 21, 202610001+561 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchWaltham, MA, United StatesHQ recorded Sep 21, 2026201-500548 contacts →

Exact match

“At AMAG, aiming higher is in our DNA.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchCary, NC, United StatesHQ recorded Sep 21, 2026201-500513 contacts →

Exact match

“Chiesi USA, Inc, headquartered in Cary, N.C, is a specialty pharmaceutical company focused on commercialization of products for the hospital, rare disease and target office-based…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchSan Diego, CA, United StatesHQ recorded Sep 21, 2026201-500491 contacts →

Exact match

“Our mission is to identify, develop and deliver life-changing therapies to people living with rare disease.#InRareForLife Community Guidelines…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchBoston, MA, United StatesHQ recorded Sep 21, 2026201-500411 contacts →

Exact match

“Rhythm Pharmaceuticals is a global, commercial-stage biopharmaceutical company focused on transforming the lives of patients with rare neuroendocrine diseases by rapidly advancing…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchMaple Grove, MN, United StatesHQ recorded Sep 21, 202651-200395 contacts →

Exact match

“Upsher‑Smith is the commercial arm of the Bora Group, focused on developing, marketing, and distributing pharmaceutical products that make a real difference for patients.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchStamford, CT, United StatesHQ recorded Sep 21, 2026201-500392 contacts →

Exact match

“SpringWorks Therapeutics, a healthcare company of Merck KGaA, Darmstadt, Germany, is a commercial-stage biopharmaceutical company dedicated to improving the lives of patients with…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchFoster City, CA, United StatesHQ recorded Sep 21, 2026201-500374 contacts →

Exact match

“Mirum Pharmaceuticals is a leading rare disease company with a global footprint of approved products and a broad pipeline of investigational medicines.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchLexington, MA, United StatesHQ recorded Sep 21, 2026201-500365 contacts →

Exact match

“Kiniksa is a biopharmaceutical company dedicated to improving the lives of patients suffering from debilitating diseases by discovering, acquiring, developing, and commercializing…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchWaltham, MA, United StatesHQ recorded Sep 21, 2026201-500326 contacts →

Exact match

“Sobi is an international specialty healthcare company dedicated to developing treatments and extensive patient support networks for people with rare and difficult to treat…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchAnn Arbor, MI, United StatesHQ recorded Sep 21, 2026201-500313 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 270 rare disease companies based in the United States

See the full list, filter by size, metro and specialty, and access 33,184 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Rare disease companies based in the United States at a glance

As of Sep 21, 2026
36.1%Verified-email coverage
340.7Average contacts per company
11-50Median size (employees)
5.9%Largest-city concentration · Boston
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
102
11-50
74
51-200
46
201-500
26
501-1,000
9
1,001-5,000
8
10001+
4

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 270 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “rare disease companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 33,184 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “rare disease companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many rare disease companies are there based in the United States?

RevenueBase identified 270 company matches for rare disease companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Johnson & Johnson Innovative Medicine tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most rare disease companies?

Boston leads with 16 company records, followed by New York (14) and San Diego (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 33,184 professional contacts with verified work emails tracked across these 270 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.