US physician practices from the CMS NPPES register: fields, method and prices, nationwide or by state.
Cardiologist email list
The CMS NPPES register (file of 2026-09-14) lists ~24,000 registered practice addresses where at least one provider carries a cardiology code: cardiovascular disease, interventional cardiology, clinical cardiac electrophysiology, advanced heart failure and transplant cardiology, adult congenital heart disease or pediatric cardiology. That is 4.9% of the ~483,000 physician addresses in the same file. The count is an upper bound, because the register keeps closed and duplicate addresses and many cardiologists are registered at several hospital and clinic sites. The cardiologist list holds one row per cardiology office we can confirm, with the email it publishes and the page where we found it. You can order it now, nationwide or by state.
What's in the list
| Column | What it holds | Format |
|---|---|---|
| practice_name, dba | Legal and trading names | text |
| address, city, state, zip, county | Practice location | text; state as 2 letters, ZIP as 5 digits |
| phone | Main number the practice publishes | text |
| website | The practice's own site, or the group's page for that location | URL |
| email, email_type | An email the practice publishes on its own site, marked role (info@, frontdesk@) or personal (a named inbox at the practice's own domain). No free-mail addresses | email address; type is role or personal |
| email_status | valid, catch-all or unknown. Catch-all means the mailbox can't be confirmed; invalid emails are removed | valid, catch-all or unknown |
| email_source_url | The page or official register where the email was published | URL |
| email_last_verified | Date of the latest verification check | date, ISO 8601 (year-month-day) |
| specialty | The specialties registered at the address, from the NUCC taxonomy (family medicine, cardiology, dermatology and so on) | one of a fixed list of specialties (NUCC taxonomy) |
| physicians_at_location | Number of physicians with an active NPI at this address | whole number |
| group_affiliation | Health system or medical group name where public evidence shows one (blank when unknown) | text; blank when unknown |
| npi, source_last_updated | The practice's NPI and when NPPES last changed the record | 10-digit NPI; date, ISO 8601 (year-month-day) |
In the public register
Registered practice addresses in the register~24,000
Rounded count in CMS NPPES, file of 2026-09-14. It is an upper bound: registers keep closed and duplicate entries, which our checks remove.
States and DC51
States plus DC with at least one entry in the register.
Register file date2026-09-14
The date of the public file we counted.
Who is included
An office is in this list when a provider registered at its address carries one of six NUCC taxonomy codes, in any of the 15 taxonomy slots of an NPPES record:
Critical care medicine (207RC0200X) is left out. Cardiothoracic and vascular surgeons, cardiac nurse practitioners and physician assistants are left out unless a cardiologist is registered at the same address. Pediatric cardiology is in this list and in the pediatrician email list, so the two counts overlap and should not be added together. Every other specialty is in the physician email list.
Physician email listHow many cardiologists are in the US?
The AAMC counted 22,262 active physicians whose specialty is cardiovascular disease in 2021 (2022 Physician Specialty Data Report). The AAMC lists clinical cardiac electrophysiology as its own specialty, with 2,632 active physicians, and interventional cardiology separately again, so the 22,262 is general cardiology only. The Bureau of Labor Statistics counted 17,290 cardiologist jobs in May 2025 (OEWS, SOC 29-1212). That figure is lower because OEWS counts wage-and-salary jobs only, which leaves out self-employed cardiologists, and the two figures are four years apart.
The NPPES register holds ~43,000 individual NPIs whose primary taxonomy is one of the six cardiology codes, and ~44,000 with a cardiology code in any slot. Both are upper bounds, because physicians keep their NPI after they retire.
| Term | What it counts | Latest figure | Source and date |
|---|---|---|---|
| Active cardiovascular disease physicians | Physicians past residency whose self-reported primary specialty is cardiovascular disease; interventional cardiology and electrophysiology are separate AAMC specialties | 22,262 | AAMC, data year 2021 (published January 2023) |
| Active clinical cardiac electrophysiologists | Physicians whose primary specialty is electrophysiology | 2,632 | AAMC, data year 2021 |
| Cardiologist jobs | Wage-and-salary jobs in SOC 29-1212; self-employed cardiologists are left out, pediatric cardiologists sit in SOC 29-1221 | 17,290 | BLS OEWS, May 2025 |
| Primary-taxonomy cardiology NPIs | Individual NPIs whose primary taxonomy is one of the six codes above | ~43,000 | CMS NPPES, file of 2026-09-14 |
| Any-slot cardiology NPIs | Individual NPIs with one of the six codes in any slot; an upper bound | ~44,000 | CMS NPPES, file of 2026-09-14 |
| Registered cardiology addresses | Distinct practice addresses where an active NPI carries one of the codes | ~24,000 | CMS NPPES, file of 2026-09-14 |
Counts are rounded.
The AAMC and BLS figures each measure a different group, so they are shown side by side and not added. More physician counts are on the doctor statistics page.
Cardiology addresses by state
California, Florida, New York and Texas hold the most registered cardiology addresses, about 38% of the US total between them. Florida has about 60% of California's population and 96% of its cardiology addresses. Alaska, North Dakota, South Dakota and Vermont hold the fewest.
| State | In the public register | Per 100,000 residents | Share of US total |
|---|---|---|---|
| California | ~2,500 | 6.4 | 10% |
| Florida | ~2,400 | 10.2 | 10% |
| New York | ~2,300 | 11.4 | 9.6% |
| Texas | ~1,900 | 6.1 | 8.1% |
| New Jersey | ~1,000 | 10.7 | 4.3% |
| Pennsylvania | ~1,000 | 7.8 | 4.3% |
| Illinois | ~840 | 6.6 | 3.5% |
| Ohio | ~800 | 6.7 | 3.4% |
| Michigan | ~760 | 7.5 | 3.2% |
| Maryland | ~700 | 11.2 | 3% |
| North Carolina | ~690 | 6.2 | 2.9% |
| Georgia | ~650 | 5.8 | 2.7% |
| Arizona | ~610 | 8.0 | 2.6% |
| Virginia | ~560 | 6.3 | 2.3% |
| Massachusetts | ~560 | 7.8 | 2.3% |
| Colorado | ~410 | 6.9 | 1.7% |
| Tennessee | ~410 | 5.6 | 1.7% |
| Indiana | ~400 | 5.7 | 1.7% |
| Missouri | ~390 | 6.1 | 1.6% |
| Louisiana | ~370 | 8.1 | 1.6% |
| Kentucky | ~330 | 7.3 | 1.4% |
| Washington | ~330 | 4.1 | 1.4% |
| Connecticut | ~320 | 8.6 | 1.3% |
| South Carolina | ~300 | 5.4 | 1.3% |
| Wisconsin | ~270 | 4.5 | 1.1% |
| Alabama | ~250 | 4.8 | 1.1% |
| Nevada | ~220 | 6.7 | 0.93% |
| Oklahoma | ~220 | 5.4 | 0.93% |
| Arkansas | ~180 | 5.7 | 0.75% |
| Oregon | ~180 | 4.1 | 0.73% |
| Mississippi | ~170 | 5.8 | 0.72% |
| West Virginia | ~170 | 9.5 | 0.7% |
| Minnesota | ~150 | 2.6 | 0.62% |
| Utah | ~150 | 4.2 | 0.62% |
| Kansas | ~150 | 4.9 | 0.61% |
| New Mexico | ~120 | 5.6 | 0.5% |
| Iowa | ~110 | 3.3 | 0.45% |
| Delaware | ~100 | 9.8 | 0.44% |
| Idaho | ~100 | 4.8 | 0.41% |
| District of Columbia | ~100 | 13.8 | 0.4% |
| Nebraska | ~90 | 4.5 | 0.38% |
| Rhode Island | ~90 | 8.0 | 0.37% |
| Hawaii | ~80 | 5.8 | 0.35% |
| Maine | ~80 | 5.3 | 0.31% |
| Montana | ~70 | 6.2 | 0.3% |
| New Hampshire | ~60 | 4.4 | 0.26% |
| Wyoming | ~40 | 7.1 | 0.18% |
| Vermont | ~40 | 5.9 | 0.16% |
| South Dakota | ~40 | 3.7 | 0.15% |
| North Dakota | ~30 | 3.4 | 0.11% |
| Alaska | ~20 | 2.7 | 0.08% |
Counts are rounded.
These are register counts, rounded. The list will hold fewer rows, because our checks remove closed and duplicate entries.
Where cardiology addresses cluster
Cardiology addresses are densest along the East Coast. The national rate is about 7.0 per 100,000 residents. The District of Columbia has 13.8, New York 11.4 and Maryland 11.2, with New Jersey (10.7) and Florida (10.2) next. West Virginia ranks seventh among the states and DC, at 9.5 per 100,000, ahead of Connecticut (8.6). Minnesota has the lowest rate (2.6), then Alaska (2.7) and Iowa (3.3).
| State | Per 100,000 residents | In the public register |
|---|---|---|
| District of Columbia | 13.8 | ~100 |
| New York | 11.4 | ~2,300 |
| Maryland | 11.2 | ~700 |
| New Jersey | 10.7 | ~1,000 |
| Florida | 10.2 | ~2,400 |
| Delaware | 9.8 | ~100 |
| West Virginia | 9.5 | ~170 |
| Connecticut | 8.6 | ~320 |
| Louisiana | 8.1 | ~370 |
| Arizona | 8.0 | ~610 |
Counts are rounded.
Cardiology's share of all physician addresses tells a related story. Nationally it is 4.9%. New York (6.2%), Rhode Island (6.1%), and West Virginia and New Jersey (6.0%) have the highest shares, and Alaska the lowest (1.7%). In Minnesota cardiology is 3.4% of physician addresses, below the national share as well as below it per resident. Shares are computed from the cardiology and physician register counts for each state, from the CMS file of 2026-09-14.
Free sample
Leave your email. Our first email asks you to confirm your address, then we send you 25 rows from this list, usually within one business day.
How delivery works
Checkout
You choose nationwide or your states and pay by card. Your card is held, not charged.
Update and verify
We update your list from the latest public sources and verify its emails, so you receive a fresh list.
Checks
We remove everyone on our suppression list and check the file before it goes out.
Email
We email you your files. Delivered within 24 hours, usually much sooner. That includes the nationwide file.
Payment
Your card is charged when the file is delivered. If we can't deliver in time, we cancel the hold and you pay nothing.
Where the data comes from
The list starts from the CMS National Plan and Provider Enumeration System (NPPES), the federal register of healthcare providers, file of 2026-09-14. We group MD and DO registrations by practice address, match each location to its own website or its group's location page, and record the emails and phone numbers published there, with the page URL. We check each email with the receiving mail server and leave out locations we can't confirm as current.
Full methodologyCMS NPPES
Questions about the cardiologist list
Can I buy the cardiologist list now?
Yes. Choose nationwide or up to 10 states in the order panel on this page. It costs $249 nationwide, and the panel shows the price of each state file. Delivered within 24 hours, usually much sooner. That includes the nationwide file.
Does the list include hospital-employed cardiologists?
Rows will be locations, not people. A cardiologist employed by a hospital or health system will appear through the clinic or heart center where they see patients, under that site's name, phone and published email. The list will have no column of cardiologists' names.
Would the list suit cardiac device and diagnostics sales?
It may. A rep selling monitors, imaging or remote-monitoring services needs the sites where cardiologists work, and the specialty column will show which ones register interventional or electrophysiology codes.
Are pediatric cardiologists included?
Yes, under code 2080P0202X. They are also in the pediatrician list, so a buyer of both lists will see some addresses twice.
How are cardiologist files delivered and refunded?
The same as every list. Delivered within 24 hours, usually much sooner. Card held at checkout, charged on delivery. The 5% bounce refund applies too. See pricing.
Sources
- CMS, NPPES Data Dissemination V.2, file of 2026-09-14, taxonomy codes 207RC0000X, 207RI0011X, 207RC0001X, 207RA0001X, 207RA0002X and 2080P0202X, https://download.cms.gov/nppes/NPI_Files.html (accessed 2026-10-04)
- AAMC, What's your specialty? New data show the choices of America's doctors by gender, race, and age (2022 Physician Specialty Data Report, data year 2021), 2023-01-12, https://www.aamc.org/news/what-s-your-specialty-new-data-show-choices-america-s-doctors-gender-race-and-age (accessed 2026-10-04)
- AAMC, U.S. Physician Workforce Data Dashboard Methods (specialty groupings), https://www.aamc.org/data-reports/data/us-physician-workforce-data-dashboard-methods (accessed 2026-10-04)
- BLS, Occupational Employment and Wage Statistics, May 2025 national file, cardiologists (SOC 29-1212), https://www.bls.gov/oes/special-requests/oesm25nat.zip (accessed 2026-10-04)
- BLS, 2018 SOC definitions (29-1212 Cardiologists; 29-1221 Pediatricians, General), https://www.bls.gov/soc/2018/soc_2018_definitions.pdf (accessed 2026-10-04)