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Hematology (Pathology) Providers in the United States

Data updated monthly · Last refresh September 2026

483 Hematology (Pathology) providers practice across all 50 states and Washington DC, and 18% received drug or device company payments in 2025. California has the most at 65. Listings are drawn from federal public records and are not endorsements.

483providers
32states
18%with industry payments

Industry payment share ranges from 31% in New York to 7% in Minnesota, among states with 25 or more providers.

Hematology (Pathology) providers by state

StateProvidersReceived payments
Hematology (Pathology) in California6522%
Hematology (Pathology) in New York5131%
Hematology (Pathology) in Texas5120%
Hematology (Pathology) in Florida3418%
Hematology (Pathology) in Minnesota277%
Hematology (Pathology) in Illinois20not reported
Hematology (Pathology) in New Jersey20not reported
Hematology (Pathology) in Washington19not reported
Hematology (Pathology) in Utah16not reported
Hematology (Pathology) in Maryland15not reported
Hematology (Pathology) in Massachusetts15not reported
Hematology (Pathology) in Colorado13not reported
Hematology (Pathology) in Michigan11not reported
Hematology (Pathology) in Missouri11not reported
Hematology (Pathology) in North Carolina11not reported
Hematology (Pathology) in Virginia11not reported
Hematology (Pathology) in Pennsylvania10not reported
Hematology (Pathology) in Ohio10not reported
Hematology (Pathology) in Tennessee10not reported
Hematology (Pathology) in Wisconsin9not reported
Hematology (Pathology) in Connecticut7not reported
Hematology (Pathology) in Oregon6not reported
Hematology (Pathology) in New Mexico6not reported
Hematology (Pathology) in Georgia6not reported
Hematology (Pathology) in Indiana5not reported
Hematology (Pathology) in Arkansas5not reported
Hematology (Pathology) in Iowa4not reported
Hematology (Pathology) in Nevada3not reported
Hematology (Pathology) in Kentucky3not reported
Hematology (Pathology) in New Hampshire3not reported
Hematology (Pathology) in Washington DC3not reported
Hematology (Pathology) in Alabama3not reported

Common questions

How many Hematology (Pathology) providers are there in the United States?

There are 483 Hematology (Pathology) providers with active NPI records across all 50 states and Washington DC, according to federal NPPES data refreshed monthly. California has the most at 65.

What share of Hematology (Pathology) providers received drug or device company payments?

87 of 483 Hematology (Pathology) providers nationally (18%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program. The share is highest in New York at 31% and lowest in Minnesota at 7%.

Where does this data come from?

Provider counts 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.

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.