Company lists · Data refreshed September 2026
Top 25 Fellowship training hospitals based in the United States
RevenueBase identified 93 fellowship training hospitals headquartered in the United States as of September 2026 and tracks 53,069 professional contacts across them, including 21,881 with verified work emails. Chicago is the largest hub.
This list covers fellowship training hospitals headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest fellowship training hospitals based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 17,024 contacts → | ||||
Indirect evidence “UT Southwestern is an academic medical center, world-renowned for its research, regarded among the best in the country for medical education and for clinical and scientific…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 14,639 contacts → | ||||
Indirect evidence “Since its beginning in 1902, Cedars-Sinai has evolved to meet the healthcare needs of one of the most diverse regions in the nation, continually setting new standards for quality…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 6,363 contacts → | ||||
Partial evidence “Whether you’re looking to become a physician, find a clinical fellowship or residency program, hoping to pursue a life of basic science research or aspiring to join one of the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,875 contacts → | ||||
Indirect evidence “The University of Pittsburgh School of Medicine has a mission to train and develop physician leaders and scientists who are agents of change.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,861 contacts → | ||||
Indirect evidence “The Spencer Fox Eccles School of Medicine combines excellence in teaching, research, and clinical expertise to train tomorrow's physicians for the rapidly changing world of…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,561 contacts → | ||||
Indirect evidence “NYU Grossman School of Medicine is redefining how physicians are trained-and what a medical school can be.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,459 contacts → | ||||
Indirect evidence “Wake Forest University School of Medicine directs the education of nearly 1,900 students and fellows, including physicians, basic scientists and allied clinical professionals.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 927 contacts → | ||||
Indirect evidence “Founded in 1824, the GW School of Medicine and Health Sciences (SMHS) is the 11th oldest medical school in the country and the first in the nation’s capital.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 895 contacts → | ||||
Indirect evidence “For more than 150 years, Ascension Saint Agnes has been dedicated to the art of healing by providing exceptional care to the greater Baltimore area.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 883 contacts → | ||||
Indirect evidence “Since our beginning in 1867, Kern Medical has served as an integral part of the community.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 586 contacts → | ||||
Indirect evidence “The University of Louisville School of Medicine, founded in 1837, is one of the oldest medical schools in the United States.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 573 contacts → | ||||
Indirect evidence “WMed is committed to excellence and health equity through transformative medical education, high-quality, patient- and family-centered care, innovative research, and community…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 485 contacts → | ||||
Partial evidence “Mercy Hospital & Medical Center is a member of Trinity Health located on Chicago’s south side.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 353 contacts → | ||||
Partial evidence “The Wright Center’s Internal Medicine, Family Medicine and Psychiatry Residencies, as well as our Cardiovascular Disease and Gastroenterology Fellowships, were designed to empower…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 328 contacts → | ||||
Indirect evidence “Wright State University Boonshoft School of Medicine is located in Dayton, Ohio, and serves the Miami Valley region of Southwest Ohio.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 280 contacts → | ||||
Partial evidence “Olive View-UCLA Medical Center is a 355-bed hospital that serves much of the San Fernando and Antelope Valleys, with outpatient clinics that provide primary care, specialty care…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 272 contacts → | ||||
Indirect evidence “Consistently ranked among the nation's top medical schools, the UCSF School of Medicine earns its greatest distinction from its outstanding faculty – among them are four Nobel…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 239 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 235 contacts → | ||||
Indirect evidence “The University of Illinois College of Medicine Peoria (UICOMP) educates 244 medical students and nearly 300 physician residents annually.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 151 contacts → | ||||
Partial evidence “Since its founding in 1971, the University of Illinois College of Medicine Rockford has been committed to developing an optimal learning environment for training health care…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 71 contacts → | ||||
Strong evidence “Mercy Hospital Critical Care Fellowship, under the aegis of Saint Louis University School of Medicine, is one of the largest and second oldest programs in the United States.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 69 contacts → | ||||
Indirect evidence “The nation's leading provider of quality, patient-centered care is also the leader in graduate medical education.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 66 contacts → | ||||
Partial evidence “MISSION STATEMENT Our Mission is to support the advancement of medical education and training for medical residents in Hawaii, coordinate the administration of the residency…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 64 contacts → | ||||
Indirect evidence “Transforming Medicine.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 60 contacts → | ||||
Partial evidence “The MERI is a nonprofit medical teaching and training facility in Memphis, Tennessee qualified under section 501 (c)(3) of the Internal Revenue Code.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: fellowship training hospitals. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names fellowship training hospitals.
- Partial evidence
- Its own public description names part of fellowship training hospitals, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name fellowship training hospitals. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 93 fellowship training hospitals based in the United States
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Fellowship training hospitals based in the United States at a glance
As of Sep 16, 2026Companies by employee count
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 93 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among fellowship training hospitals, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “fellowship training hospitals”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names fellowship training hospitals), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among fellowship training hospitals, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 21,881 across the full list. 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 16, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names fellowship training hospitals, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many fellowship training hospitals are there based in the United States?
RevenueBase identified 93 fellowship training hospitals headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
UT Southwestern Medical Center, headquartered in Dallas, tops this list with the largest team on record.
Which city has the most fellowship training hospitals?
Chicago leads with 5 headquartered companies, followed by Los Angeles (3) and Bakersfield (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 21,881 verified decision-maker contacts tracked across these 93 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 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 Smart Search, 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.
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