The radiologists email list, from the code group to the reading room

A radiologists email list has to find physicians who rarely sit behind the address on file. The Bureau of Labor Statistics counted 26,770 employed radiologists in its May 2025 estimates. The AAMC counted 28,618 active physicians in radiology and diagnostic radiology in 2024, plus 5,193 neuroradiologists and 4,020 interventional radiologists.

The radiology headcount, source by source

NPPES downloadable file, September 2026, CMS; active NPIs only, primary taxonomy only; counted by Premium Data on 3 October 2026.

Three reasons the rows disagree.

• Scope. The 2085 group in NPPES includes radiation oncologists and radiological physicists. The AAMC reports radiation oncology apart, and the BLS defines radiologists by imaging, not by radiation therapy. Read the NPPES row as radiology codes, not people who read images.
• Who is surveyed. The BLS survey leaves out the self-employed and partners in unincorporated firms. A radiologist who is a partner in an unincorporated group is outside it. The AAMC excludes residents and fellows and merges the radiology and diagnostic radiology categories into one.
• Date. May 2025, 2024 and September 2026 are three different moments, in a specialty where groups merge and sites change readers.

Which codes make someone a radiologist here

The registry uses the taxonomy of the National Uniform Claim Committee, version 26.1, in effect since 1 July 2026. One detail sets radiology apart: there is no plain Radiology code. Every code in the 2085 group names a specialization.

Outside the group: nuclear medicine physicians (207U), the diagnostic neuroimaging code filed under neurology (2084D0003X), and the radiology codes of dentists, chiropractors and podiatrists (1223X0008X, 111NR0200X, 213ER0200X), who are not physicians. The physician lists that sit next to this one are on the role index.

Where radiologists show up in the data

• The NPPES file gives the name, the codes, and one reported practice address and phone. For a radiologist, that address can be the group's business office rather than a reading room. No email, and no list of the sites the radiologist reads for.
• The BLS profile places radiologists by employer: 14,970 in offices of physicians, 6,060 in general medical and surgical hospitals, 3,520 in medical and diagnostic laboratories, 1,220 in colleges and universities. Texas (2,330), New York (2,010) and Florida (1,680) have the most. No names.
• County Business Patterns counted 6,968 diagnostic imaging center establishments in the United States in 2023 (NAICS 621512). It gives sites, not radiologists.
• The AAMC dashboard shows that in 2024, 18.7% of radiology and diagnostic radiology physicians were hospital-based full time and 65.2% were in office-based practice.
• The Interstate Medical Licensure Compact, an expedited path to licenses in several states, had been passed by 44 states plus the District of Columbia and Guam on 3 October 2026, with 4 of those states still implementing it. It matters here because reading for hospitals in several states takes a license in each of them.

Building a radiology file, step by step

• Decide whether you want readers, interventional radiologists, or both, and which states.
• Count the matching 2085 codes in NPPES, primary taxonomy only.
• Tie each radiologist to the group that employs them, then to the sites the group reads for.
• Find a phone that reaches the radiologist or the group's office, and a work email when it exists.
• Check the radiologist is still in that group, then remove your clients.

Every step and its trap is described in the full method.

The work, counted in calls and checks

The AAMC figures for the three reading specialties add up to 37,831 active physicians in 2024 (28,618 plus 5,193 plus 4,020). Building on them yourself takes:

• 37,831 NPPES lookups, to drop radiation oncologists and physicists who share the code group;
• 37,831 group matches, because an individual NPPES record has no employer field;
• 6,968 calls if you start from the imaging centers instead, one per establishment, to ask which group reads their studies;
• one call or search per radiology group found, to reach the person who answers for it;
• 37,831 checks that each radiologist still reads for that group.

Four ways a radiology list goes wrong

Radiation oncologists and physicists in the radiology count

A filter on codes starting with 2085 returns radiation oncologists (2085R0001X), physicists (2085R0205X) and the old therapeutic radiology code. If you sell reading software, imaging equipment service or a reading contract, these lines are noise. Ask for the reading specializations only.

The phone reaches patient scheduling

An imaging center's main number books scans. The person who answers can tell you which group reads there, but not put a radiologist on the line. For a radiologist, the useful number is the group's administrative office or a reading room line, and both are often unpublished.

A state filter that does not match where the radiologist reads

A radiologist recorded at an address in one state can read, remotely, for hospitals in several others, with a license in each. If your offer is tied to a state, decide whether you mean where the radiologist is recorded or where the patients are.

Imaging center counts that include dental X-ray laboratories

The census definition of diagnostic imaging centers lists MRI centers, CT centers and ultrasound imaging centers, and also dental X-ray laboratories. The 6,968 sites are not all places where a radiologist reads.

Who decides, for a radiology purchase. In a radiology group it is usually a managing partner or a practice administrator. In a hospital, equipment and workflow sit with the director of imaging services, often not a physician and without an NPI. Name the role you want before the count.

What Premium Data builds for radiology buyers

• Two kinds of line: a company line for the radiology group or the imaging center (name, address, main phone, website), or a person line for the radiologist (name, title, group, a phone that reaches them, work email when it exists).
• The file is built on the day of the order, on the specializations and states you described.
• Three checks per line: the group or site, the radiologist, and whether the radiologist still reads there.
• You are billed only for lines delivered with a phone number, up to the ceiling you set and never above it.
• A wrong line is refunded at its price when you show the proof, a call recording, a hard bounce or a public profile, within thirty days of delivery.
• The count costs nothing: it is done in a 30 minute call, and you call one radiologist from the file with us before paying.

What federal law says about calling and emailing businesses is on our United States page.

Radiology facts to quote

• On 3 October 2026, the NPPES file of September 2026 listed 61,460 active individual NPIs with a primary taxonomy in the radiology group, codes starting with 2085, which also holds radiation oncology (CMS, counted by Premium Data).
• In its May 2025 estimates, the BLS counted 26,770 employed radiologists, 3,520 of them in medical and diagnostic laboratories, the industry that includes imaging centers (BLS OEWS, read on 3 October 2026).
• County Business Patterns counted 6,968 diagnostic imaging center establishments in the United States in 2023 (US Census Bureau, NAICS 621512, read on 3 October 2026).