Top oncologists in the USA
| Company Name | Country | City | Address 1 | State/Province | Postal Code | Website | Founding Year | Yearly Revenue in U.S. Dollars | Employees Total | Business Legal Type - Description | Number of Companies in Group | Company Registration Number | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Mayo Clinic | USA | Rochester | 200 1st St Sw | Olmsted | 55905 | history.***** | 1919 | $16,303,032,544 | 82,000 | Corporation | 204 | 886-NPA |
| 2 | G Holdings LLC | USA | Parsippany | 1 Campus Dr | Morris | 07054 | gaf.***** | 2001 | $6,353,397,085 | 4,300 | Corporation | 188 | 3454465 |
| 3 | Arthur G. James Cancer Hospital And Richard J. Solove Research Institute Foundation | USA | Columbus | 460 W 10th Ave | Franklin | 43210 | ohiostate.***** | 1985 | $1,947,339,782 | 35 | Corporation | 503 | 496220 |
| 4 | Samaritan Health Services, INC. | USA | Corvallis | 3600 Nw Samaritan Dr | Benton | 97330 | samhealthplans.***** | 1986 | $1,749,443,000 | 4,550 | Corporation | 81 | 5762885 |
| 5 | Reading Hospital | USA | Reading | 420 S 5th Ave | Berks | 19611 | towerhealth.***** | 1883 | $1,383,023,429 | 5,500 | Corporation | 62 | 0000605659 |
| 6 | The Metrohealth System | USA | Cleveland | 2500 Metrohealth Dr | Cuyahoga | 44109 | metrohealth.***** | 1837 | $1,358,003,436 | 7,700 | Corporation | 28 | 816153 |
| 7 | Health Research, INC. | USA | Menands | 150 Broadway Ste 280 | Albany | 12204 | healthresearch.***** | 1953 | $1,087,043,800 | 1,400 | Corporation | 9 | 87878 |
| 8 | Waukesha Memorial Hospital, INC. | USA | Waukesha | 725 American Ave | Waukesha | 53188 | prohealthcare.***** | 1956 | $662,005,020 | 2,071 | Corporation | 5 | 6 W08085 |
| 9 | Innovis Health, LLC | USA | Fargo | 1702 University Dr S | Cass | 58103 | essentiahealth.***** | 2008 | $633,086,168 | 2,000 | Corporation | 132 | 4434004 |
| 10 | Central Arkansas Radiation Therapy Institute, INC. | USA | Little Rock | 8901 Carti Way | Pulaski | 72205 | carti.***** | 1970 | $611,727,630 | 175 | Corporation | 8 | 100010669 |
| 11 | Glens Falls Hospital | USA | Glens Falls | 100 Park St | Warren | 12801 | albanymed.***** | 1984 | $489,962,000 | 8,760 | Corporation | 57 | 21031 |
| 12 | American Cancer Society, INC. | USA | Atlanta | 270 Peachtree St Nw Ste 1300 | Fulton | 30303 | cancer.***** | 1988 | $421,790,385 | 6,017 | Corporation | 441 | 17841 |
| 13 | Jewish Hospital Of Cincinnati, INC. | USA | Cincinnati | 4777 E Galbraith Rd | Hamilton | 45236 | mercy.***** | 2009 | $350,683,282 | 2,500 | Corporation | 485 | N/A |
| 14 | ST. Jude Children's Research Hospital, INC. | USA | Memphis | 262 Danny Thomas Pl | Shelby | 38105 | stjude.***** | 2017 | $302,330,000 | 7,522 | Corporation | 25 | 620646012 |
| 15 | Upmc ST. Margaret | USA | Pittsburgh | 815 Freeport Rd | Allegheny | 15215 | upmc.***** | 1997 | $277,853,386 | 1,501 | Corporation | 653 | 0002732984 |
| 16 | Phc-Lake Havasu, INC. | USA | Lake Havasu City | 101 Civic Center Ln | Mohave | 86403 | havasuregional.***** | 2006 | $256,071,730 | 650 | Corporation | 1273 | 08347293 |
| 17 | Cold Spring Harbor Laboratory Association, INC. | USA | Cold Spring Harbor | 1 Bungtown Rd | Suffolk | 11724 | bit.***** | 1963 | $232,693,889 | 1,200 | Corporation | 8 | 18967 |
| 18 | Vhs Huron Valley-Sinai Hospital, INC. | USA | Commerce | 1 William Carls Dr | Oakland | 48382 | dmc.***** | 2011 | $192,712,314 | 1,000 | Corporation | 2186 | 800855687 |
| 19 | Lenoir Memorial Hospital Incorporated | USA | Kinston | 100 Airport Rd | Lenoir | 28501 | unclenoir.***** | 1950 | $172,824,259 | 811 | Corporation | 4 | 566000674 |
| 20 | North Shore Hematology-Oncology Associates, P.C. | USA | Port Jefferson Station | 1500 Route 112 Bldg 4 | Suffolk | 11776 | nshoa.***** | 1977 | $162,026,713 | 700 | Corporation | 30 | 429488 |
| 21 | ST. Anne Mercy Hospital | USA | Toledo | 3404 W Sylvania Ave | Lucas | 43623 | mercy.***** | 2011 | $144,653,300 | 63 | Corporation | N/A | N/A |
| 22 | Cytomx Therapeutics, INC. | USA | South San Francisco | 151 Oyster Point Blvd Ste 400 | San Mateo | 94080 | cytomx.***** | 2008 | $138,103,000 | 121 | Corporation | N/A | 4845502 |
| 23 | Miami Cancer Institute At Baptist Health, INC. | USA | Coral Gables | 6855 Sw 57th Ave | Miami-dade | 33143 | cancer.***** | 2016 | $112,935,556 | 2 | Corporation | N/A | N15000000397 |
| 24 | The Susan G Komen Breast Cancer Foundation INC | USA | Dallas | 13770 Noel Rd Unit 801889 | Dallas | 75380 | komen.***** | 1982 | $107,597,705 | 260 | Corporation | 17 | 751835298 |
| 25 | Fedcap Rehabilitation Services, INC. | USA | New York City | 501 Madison Ave 12a | New York | 10022 | N/A | 1935 | $105,953,538 | 3,500 | Corporation | 17 | 38950 |
Showing 25 of 2,779 companies
Request Free SampleOncologists in the USA by state
2,779 oncologists across 10 US states. Hover any state to see its share of the US oncologists market.
Oncologists in the USA by employee size
| Bracket | Companies | Share |
|---|---|---|
| 1-4 | 1,489 | |
| 5-9 | 643 | |
| 10-19 | 261 | |
| 20-49 | 182 | |
| 50-99 | 80 | |
| 100-199 | 44 | |
| 200-499 | 29 | |
| 500-999 | 18 | |
| 0 or Unknown | 18 | |
| 1.000-4.999 | 12 | |
| 5.000-9.999 | 2 | |
| 10.000+ | 1 |
Oncologists in the USA by revenue
| Bracket | Companies | Share |
|---|---|---|
| 100.001 to 499.999 | 1,058 | |
| 0 or Unknown | 673 | |
| 1 to 100.000 | 457 | |
| 1.000.000 to 4.999.999 | 264 | |
| 500.000 to 999.999 | 208 | |
| 10.000.000 to 49.999.999 | 44 | |
| 5.000.000 to 9.999.999 | 40 | |
| 100.000.000 to 499.999.999 | 15 | |
| 50.000.000 to 99.999.999 | 10 | |
| 1.000.000.000 or more | 7 | |
| 500.000.000 to 999.999.999 | 3 |
SIC and industry classification for US oncologists
US oncologists aren't separately selectable in the standard SIC 1987 classification. The closest SIC 1987 umbrella is 8011 (Offices and Clinics of Doctors of Medicine). We use the CompanyData industry label 'Physicians: Cancerology, Medical Oncology' to identify them precisely. The list above covers every active US company in our database tagged with this CompanyData label, so the state and revenue breakdowns reflect the entire sector rather than a sample.
Closely related business services
Frequently asked questions about oncologists in the USA
Our database tracks 2,779 active oncologists across all 50 US states, sourced from Secretary of State filings and verified monthly. The exact count changes as firms register, dissolve and merge. The figure on this page reflects the most recent monthly refresh.
The state with the most oncologists is NEW YORK, followed by California, Texas, Florida and New York. The full state breakdown above shows the share each US state holds, with deeplinks to drill into a single-state directory.
US oncologists aren't separately selectable in the standard SIC 1987 classification. The closest SIC 1987 umbrella is 8011 (Offices and Clinics of Doctors of Medicine). We use the CompanyData industry label 'Physicians: Cancerology, Medical Oncology' to identify them precisely. The list above covers every active US company in our database tagged with this CompanyData label. The platform link beside each result also lets you filter by sub-code or by NAICS if you prefer.
Yes. Apply your filters (state, size, revenue, etc.) on the platform, preview the result on screen, then export the full filtered list as CSV or Excel. Larger exports (10k+ rows) are delivered by email link. Request a free sample first if you want to evaluate the data before you buy.
Every record includes the firm name, full business address, primary phone, business email (where available), website, employee size, revenue band, founding year and primary SIC / NAICS classification. Records are enriched from the US business register and re-verified monthly.
Monthly. Each refresh removes firms that have dissolved and adds new registrations from the latest Secretary of State filings. The "Last updated" line at the top of this page shows the most recent refresh date.
10 US states have at least one active oncologist in our database. The state with most oncologists is NEW YORK, followed by California, Texas, Florida and New York. Use the interactive state map above to compare any two states by share of the US oncologists market.
