Hematologist and oncologists in the United States
- Hematologist and oncologists
- 13,767
- Linked to a hospital or group
- 11,667
- Hospitals with a hematologist and oncologist
- 3,740
- Medical groups with a hematologist and oncologist
- 2,597
- States and territories
- 53
There are 13,767 hematologist and oncologists in the US. California has the most, 1,586, and Brigham and Women's Hospital has the most affiliated hematologist and oncologists of any hospital, 148. 36% finished medical school 30 or more years ago.
Find work emails and mobile numbers for all 13,767 US hematologist and oncologists
Validated work emails and mobile numbers for US hematologist and oncologists, found through healthcare waterfall enrichment, with a free Dmand AI account.
California has the most hematologist and oncologists, with 1,586
There are 13,767 hematologist and oncologists in the US, according to Dmand AI data. New York is second with 1,096, and Texas third with 851.
Hematologist and oncologists in every other state and territory
- New Jersey403
- Georgia398
- Michigan343
- Virginia330
- Wisconsin309
- Tennessee284
- Arizona275
- Maryland272
- Indiana245
- Minnesota244
- Missouri208
- Colorado200
- Connecticut198
- Louisiana184
- Alabama180
- South Carolina173
- Kentucky159
- Oregon140
- Oklahoma139
- Puerto Rico129
- Kansas120
- Utah103
- Iowa96
- Arkansas96
- Nebraska87
- West Virginia83
- Maine78
- Washington, DC78
- Rhode Island77
- Nevada73
- New Mexico73
- New Hampshire71
- Hawaii65
- Mississippi63
- Montana53
- Delaware47
- Idaho39
- North Dakota38
- South Dakota38
- Alaska29
- Vermont27
- Wyoming18
- U.S. Virgin Islands2
Source: NPPES NPI Registry (CMS)
For health IT teams
Dmand AI has the EHR for 12,778 of 13,767 US hematologist and oncologists, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.
Texas Oncology has the most hematologist and oncologists of any US medical group, with 269
UW Physicians is second with 133, and The Permanente Medical Group, Inc. third with 118. Counts are hematologist and oncologists linked to each group.
Sources: Dmand AI Affiliation Data and Dmand AI Org Hierarchy Data
Brigham and Women's Hospital has the most affiliated hematologist and oncologists of any US hospital, with 148
Fred Hutchinson Cancer Center in Seattle is second with 132, and Massachusetts General Hospital third with 121. US hematologist and oncologists are affiliated with 3,740 hospitals in all.
See every hospital and group for each US hematologist and oncologist
Each public profile names one place a hematologist and oncologist practices. A free account shows all of them, with the employer, the EHR and validated contacts.
Source: Dmand AI Affiliation Data
10,446 US hematologist and oncologists practice at a hospital, the most common site of care
7,157 also practice at a medical group site, and 1,034 at home health agencies. A hematologist and oncologist can practice at several kinds of site, so the shares overlap.
US hematologist and oncologists by site of care
- Hospitals10,446
- Medical group practices7,157
- Home health agencies1,034
- Hospices848
- Physician offices519
Sources: Dmand AI Affiliation Data and Dmand AI Practice Data
36% of US hematologist and oncologists finished medical school 30 or more years ago
3,868 of the 10,754 US hematologist and oncologists with a graduation year on file. 822 graduated in the last 10 years, fewer than graduated 40 or more years ago.
Physicians by years since medical school
- Under 10 years ago822
- 10 to 19 years ago3,145
- 20 to 29 years ago2,919
- 30 to 39 years ago1,877
- 40 or more years ago1,991
Source: Dmand AI Professional Profile Data
Every US hematologist and oncologist profile shows current hospitals and groups, Medicare activity and NPI details
- Primary practiceThe main place they practice, with its type and cityOn every profile
- Every site of careEach hospital, clinic and group where they practice nowWith a free account
- EmployerThe organization they work for, when one is on fileWith a free account
- Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
- Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
- Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
- Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
- Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
- NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
- Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
- EHR in useThe EHR at each site where they practiceWith a free account
- Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account
Free account: 30 days free, self-serve, no credit card.
Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data
Sources for the US hematologist and oncologist directory
| Data on this page | Source |
|---|---|
| HCPs, types and specialties | NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data |
| Sites of care, hospitals and medical groups | Dmand AI Affiliation Data |
| Medical school graduation year | Dmand AI Professional Profile Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
Hematologist and oncologists are HCPs whose primary specialty is hematology and oncology (taxonomy code 207RH0003X), with an active NPI and a US practice address.
FAQ
Frequently asked questions about hematologist and oncologists in the US
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
How many hematologist and oncologists are in the US?
13,767 hematologist and oncologists have an active NPI, a US practice address and hematology and oncology (taxonomy code 207RH0003X) as their primary specialty. 11,667 of them are linked to a hospital or medical group.
Which state has the most hematologist and oncologists?
California, with 1,586, followed by New York with 1,096 and Texas with 851.
Which medical groups have the most hematologist and oncologists?
Texas Oncology, with 269, followed by UW Physicians with 133 and The Permanente Medical Group, Inc. with 118.
Which hospitals have the most hematologist and oncologists?
Brigham and Women's Hospital, with 148 affiliated hematologist and oncologists, followed by Fred Hutchinson Cancer Center with 132 and Massachusetts General Hospital with 121.
How many US hematologist and oncologists finished medical school 30 or more years ago?
3,868 of the 10,754 with a graduation year on file, or 36%. 822 graduated in the last 10 years.
What is the taxonomy code for hematology and oncology?
207RH0003X is the NPPES taxonomy code for hematology and oncology. Sub-specialties with their own code are counted on their own lists.
Dmand AI
Find the right contacts among US hematologist and oncologists
Search 13,767 US hematologist and oncologists by state, hospital, medical group and the EHR they use, with validated work emails and mobile numbers.
- 30 days free
- Self-serve
- No credit card