National totals
| Active NPI records | 4,634 |
| Registered sole proprietors | 544 (11.7%) |
| NUCC taxonomy code | 207RI0011X |
| Grouping | Allopathic & Osteopathic Physicians |
What this specialty covers
An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.
Reading the sole-proprietor share
For this specialty, 544 of 4,634 active records, or 11.7%, are flagged as sole proprietors in NPPES. This self-reported field is an imperfect proxy for private practice because it describes how an NPI is registered, not necessarily whether a physician owns a practice, works independently, or is employed by a health system.
By state
| State | Active NPIs | Sole proprietors | Share |
|---|---|---|---|
| California | 519 | 81 | 15.6% |
| Florida | 481 | 68 | 14.1% |
| Texas | 458 | 49 | 10.7% |
| New York | 284 | 53 | 18.7% |
| Pennsylvania | 196 | <11 | not reported |
| Illinois | 180 | 21 | 11.7% |
| New Jersey | 156 | 24 | 15.4% |
| Georgia | 148 | 18 | 12.2% |
| Arizona | 134 | 22 | 16.4% |
| Ohio | 124 | <11 | not reported |
| Michigan | 119 | 12 | 10.1% |
| Tennessee | 119 | 16 | 13.4% |
| North Carolina | 118 | 12 | 10.2% |
| Virginia | 105 | <11 | not reported |
| Missouri | 102 | <11 | not reported |
| Louisiana | 88 | <11 | not reported |
| Wisconsin | 75 | <11 | not reported |
| Colorado | 73 | <11 | not reported |
| Alabama | 72 | <11 | not reported |
| Massachusetts | 71 | 14 | 19.7% |
| Indiana | 70 | <11 | not reported |
| Kentucky | 70 | <11 | not reported |
| Maryland | 62 | <11 | not reported |
| Washington | 62 | <11 | not reported |
| South Carolina | 57 | <11 | not reported |
| Arkansas | 56 | <11 | not reported |
| Oklahoma | 44 | <11 | not reported |
| Kansas | 42 | <11 | not reported |
| Utah | 41 | <11 | not reported |
| Minnesota | 41 | <11 | not reported |
| Mississippi | 39 | <11 | not reported |
| Connecticut | 36 | <11 | not reported |
| Montana | 36 | <11 | not reported |
| Oregon | 36 | <11 | not reported |
| Nevada | 32 | <11 | not reported |
| Nebraska | 32 | <11 | not reported |
| West Virginia | 32 | <11 | not reported |
| Iowa | 23 | <11 | not reported |
| Idaho | 21 | <11 | not reported |
| Hawaii | 20 | <11 | not reported |
| New Mexico | 18 | <11 | not reported |
| Maine | 16 | <11 | not reported |
| South Dakota | 13 | <11 | not reported |
| Delaware | 12 | <11 | not reported |
| Rhode Island | 12 | <11 | not reported |
| New Hampshire | 12 | <11 | not reported |
| District of Columbia | 12 | <11 | not reported |
New NPI registrations by year
| Year first enumerated | NPIs |
|---|---|
| 2016 | 126 |
| 2017 | 121 |
| 2018 | 159 |
| 2019 | 99 |
| 2020 | 65 |
| 2021 | 65 |
| 2022 | 56 |
| 2023 | 55 |
| 2024 | 60 |
| 2025 | 68 |
Counts reflect the year each NPI was first issued, among records still active today. The final year is partial: this data covers through 2026-01-11.
Data notes
- The sole-proprietor field is self-reported by the provider in NPPES and is an imperfect proxy for private practice.
- A sole-proprietor count shown as <11 is suppressed: the true value is below 11, which could include zero.
- - The count covers active NPI records with this taxonomy as the primary classification, and an NPI record is not necessarily a unique physician or a measure of current clinical activity.
- - Taxonomy and sole-proprietor information are reported in NPPES and can be incomplete, outdated, or changed by the record holder.
- - NPI enumeration year reflects first NPI assignment and does not by itself establish a new specialist, practice opening, or workforce growth.
- Providers are counted once, by their primary taxonomy code only.
Common questions
How many interventional cardiology physicians are there in the US?
There are 4,634 active NPI records nationally with Interventional Cardiology Physician as the primary taxonomy. This is a count of NPI records, not necessarily a count of unique physicians.
How many interventional cardiologists are in private practice?
NPPES flags 544 records, or 11.7%, as sole proprietors. Because the flag is self-reported and is an imperfect proxy for private practice, it should not be read as a definitive private-practice count.
Which states have the most interventional cardiologists?
By active NPI records, the largest states are California (519), Florida (481), Texas (458), New York (284), and Pennsylvania (196).
How many new interventional cardiology NPIs were enumerated each year?
NPIs first enumerated in these recent full years numbered 55 in 2023, 60 in 2024, and 68 in 2025. Enumeration year indicates when the NPI was first assigned, not necessarily when a physician entered the specialty.
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