93244 — Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days
144,504 observed fee-for-service (50%) · ~144,551 estimated Medicare Advantage. Scaled from the observed floor by each state’s fee-for-service share (FFS share as of 2024) — scaled estimate — assumes MA utilization mirrors FFS; not an observation. How we scale
Disclosed Medicare fee-for-service services by billing state; open a bar for that state's ranked market. Average submitted charge / service by billing state, among the highest-volume states; open a bar for that state's ranked market.
- Market position — where this market sits on volume and growth among all state markets, and its rank.
- Worth a look — every state market for this search, ranked by a published score: size, growth, fragmentation, below-expected volume.
- Lookalike opportunities — groups billing below what peers of the same specialty, size, and state predict, with the expected figure shown.
- National benchmarks — where each group's volume sits nationally and within its specialty.
- Market structure — how concentrated this market is, and who owns the volume.
- Medicare-wide scaling — the exact payer split, and this market total scaled to all of Medicare, labeled as an estimate.
Nevvi's market analytics platform — code baskets, market structure and share, the twelve-year trend layer — is built and not launched yet. We're gathering interest in it.
Notify me at launch →| # | Physician group | City | St | Specialty | Providers | 93244 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 1,936 | $361,847 | $187 | premium | 13.1% | (212) 263-9700 |
| 2 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 1,871 | $209,838 | $112 | premium | 20.4% | — |
| 3 | INOVA HEALTH CARE SERVICES | FALLS CHURCH | VA | NURSE PRACTITIONER | 1818 | 1,813 | $117,949 | $65 | premium | 24.8% | — |
| 4 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 1,621 | $144,433 | $89 | premium | 19.7% | (919) 684-8111 |
| 5 | ST VINCENT'S AMBULATORY CARE INC | JACKSONVILLE | FL | NURSE PRACTITIONER | 294 | 1,406 | $104,044 | $74 | premium | 9.1% | (904) 308-6900 |
| 6 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 1,363 | $163,560 | $120 | premium | 9.2% | — |
| 7 | HEALTHTEXAS PROVIDER NETWORK | DALLAS | TX | PHYSICIAN ASSISTANT | 2482 | 1,317 | $129,066 | $98 | premium | 10.6% | — |
| 8 | CAROLINAS PHYSICIANS NETWORK INC | CHARLOTTE | NC | PHYSICIAN ASSISTANT | 2360 | 1,309 | $136,136 | $104 | premium | 15.9% | (704) 667-1000 |
| 9 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 1,231 | $181,682 | $148 | premium | 61.1% | (801) 261-8346 |
| 10 | PENN STATE HEALTH MEDICAL GROUP LLC | CAMP HILL | PA | PHYSICIAN ASSISTANT | 700 | 1,216 | $66,196 | $54 | premium | 10.2% | (717) 972-4250 |
| 11 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 1,103 | $105,888 | $96 | premium | 6.2% | (415) 600-1020 |
| 12 | THE HEART GROUP OF LANCASTER GENERAL HEALTH | LANCASTER | PA | NURSE PRACTITIONER | 61 | 989 | $45,505 | $46 | premium | 8.3% | (717) 544-8300 |
| 13 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 987 | $79,144 | $80 | premium | 10.7% | — |
| 14 | OHH PHYSICIANS LLC | OKLAHOMA CITY | OK | INTERVENTIONAL CARDIOLOGY | 134 | 971 | $67,970 | $70 | premium | 35.6% | (405) 608-3800 |
| 15 | MEMORIAL HEALTH CARE SYSTEM INC. | CHATTANOOGA | TN | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 56 | 964 | $68,444 | $71 | premium | 16.5% | (423) 697-2000 |
| 16 | ST DAVIDS HEART AND VASCULAR PLLC | AUSTIN | TX | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 199 | 939 | $70,368 | $75 | premium | 7.6% | (512) 899-2028 |
| 17 | SENTARA MEDICAL GROUP | NORFOLK | VA | PHYSICIAN ASSISTANT | 1404 | 917 | $41,362 | $45 | premium | 12.5% | — |
| 18 | INTEGRATED CARDIOLOGY GROUP LLC | LINCOLN | NE | PHYSICIAN ASSISTANT | 78 | 896 | $49,280 | $55 | premium | 48.3% | (402) 483-3333 |
| 19 | JOHNS HOPKINS UNIVERSITY | BALTIMORE | MD | NURSE PRACTITIONER | 2900 | 894 | $80,778 | $90 | premium | 12.7% | (410) 502-4340 |
| 20 | ADVOCATE HEALTH AND HOSPITALS CORPORATION | BUFFALO GROVE | IL | NURSE PRACTITIONER | 3045 | 887 | $46,602 | $53 | premium | 9.7% | (847) 459-1160 |
| 21 | HENDRICK PROVIDER NETWORK | ABILENE | TX | PHYSICIAN ASSISTANT | 249 | 857 | $57,419 | $67 | premium | 6.9% | (325) 672-4372 |
| 22 | OSF MULTI-SPECIALTY GROUP | PEORIA | IL | NURSE PRACTITIONER | 2091 | 856 | $117,283 | $137 | premium | 9.3% | (309) 683-5050 |
| 23 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 805 | $51,372 | $64 | premium | 5.4% | (914) 241-1050 |
| 24 | MAIN LINE HEALTHCARE | BRYN MAWR | PA | NURSE PRACTITIONER | 1157 | 804 | $62,390 | $78 | premium | 6.7% | — |
| 25 | BAPTIST HEALTH MEDICAL GROUP INC | LOUISVILLE | KY | NURSE PRACTITIONER | 2448 | 792 | $38,016 | $48 | premium | 32.8% | (502) 928-1050 |
| 26 | WASHINGTON REGIONAL MEDICAL SYSTEM | FAYETTEVILLE | AR | NURSE PRACTITIONER | 241 | 784 | $45,472 | $58 | premium | 15.8% | (479) 571-4338 |
| 27 | ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI | NEW YORK | NY | PHYSICIAN ASSISTANT | 2818 | 763 | $61,040 | $80 | premium | 5.2% | (212) 241-4812 |
| 28 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | LOS ANGELES | CA | INTERNAL MEDICINE | 1424 | 759 | $100,188 | $132 | premium | 4.3% | (310) 825-7922 |
| 29 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 743 | $66,140 | $89 | premium | 4.2% | (916) 681-8852 |
| 30 | MAINEHEALTH | PORTLAND | ME | NURSE PRACTITIONER | 2574 | 741 | $40,315 | $54 | premium | 52.1% | (207) 885-9905 |
| 31 | SAINT THOMAS MEDICAL PARTNERS | NASHVILLE | TN | NURSE PRACTITIONER | 591 | 731 | $40,205 | $55 | premium | 12.5% | (615) 269-4545 |
| 32 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 723 | $37,596 | $52 | premium | 6.0% | — |
| 33 | COTTON-O'NEIL CLINIC REVOCABLE TRUST | TOPEKA | KS | NURSE PRACTITIONER | 649 | 716 | $33,115 | $46 | premium | 25.4% | (785) 354-9591 |
| 34 | THE ASSOCIATION OF UNIVERSITY PHYSICIANS | SEATTLE | WA | PHYSICIAN ASSISTANT | 3612 | 713 | $53,855 | $76 | premium | 13.3% | (206) 364-0500 |
| 35 | BAPTIST HEALTH | LITTLE ROCK | AR | NURSE PRACTITIONER | 106 | 688 | $35,088 | $51 | premium | 13.9% | (501) 227-7596 |
| 36 | THE CHRIST HOSPITAL CARDIOVASCULAR ASSOCIATES LLC | CINCINNATI | OH | NURSE PRACTITIONER | 144 | 685 | $38,360 | $56 | premium | 13.1% | — |
| 37 | HONORHEALTH AMBULATORY | SCOTTSDALE | AZ | PHYSICIAN ASSISTANT | 601 | 675 | $45,049 | $67 | premium | 21.3% | — |
| 38 | MONTEFIORE MEDICAL CENTER | BRONX | NY | PHYSICAL THERAPIST IN PRIVATE PRACTICE | 2796 | 670 | $100,500 | $150 | premium | 4.5% | (866) 633-8255 |
| 39 | BHS PHYSICIANS NETWORK, INC | SAN ANTONIO | TX | PHYSICIAN ASSISTANT | 696 | 657 | $45,990 | $70 | premium | 5.3% | (210) 614-7414 |
| 40 | CATHOLIC HEALTH INITIATIVES-IOWA CORP | WEST DES MOINES | IA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 113 | 653 | $78,360 | $120 | premium | 19.5% | (515) 358-8000 |
| 41 | CEDARS-SINAI MEDICAL CARE FOUNDATION | LOS ANGELES | CA | PHYSICIAN ASSISTANT | 1699 | 652 | $65,848 | $101 | premium | 3.7% | (310) 423-0674 |
| 42 | INTERVENTIONAL CARDIOLOGISTS OF GAINESVILLE, PA | GAINESVILLE | FL | INTERVENTIONAL CARDIOLOGY | 36 | 649 | $35,147 | $54 | premium | 4.2% | (352) 375-1212 |
| 43 | TEXOMA CARDIOVASCULAR ASSOCIATES LLP | SHERMAN | TX | INTERVENTIONAL CARDIOLOGY | 2 | 646 | $29,689 | $46 | premium | 5.2% | (903) 214-6161 |
| 44 | POUDRE VALLEY MEDICAL GROUP LLC | COLORADO SPRINGS | CO | PHYSICIAN ASSISTANT | 2390 | 641 | $32,112 | $50 | premium | 20.1% | — |
| 45 | STONY BROOK INTERNISTS UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | HOSPITALIST | 414 | 627 | $56,430 | $90 | premium | 4.2% | (631) 444-1560 |
| 46 | CARDIOLOGY CLINIC OF SAN ANTONIO, PLLC | SAN ANTONIO | TX | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 124 | 626 | $41,548 | $66 | premium | 5.1% | (210) 271-3204 |
| 47 | JOHN MUIR PHYSICIAN NETWORK | WALNUT CREEK | CA | FAMILY PRACTICE | 489 | 575 | $96,600 | $168 | premium | 3.3% | (925) 296-9720 |
| 48 | UNIVERSITY MEDICAL SERVICE ASSOCIATION INC | TAMPA | FL | NURSE PRACTITIONER | 814 | 571 | $42,878 | $75 | premium | 3.7% | — |
| 49 | BARNABAS HEALTH MEDICAL GROUP PC | LIVINGSTON | NJ | NURSE PRACTITIONER | 990 | 570 | $80,821 | $142 | premium | 8.6% | — |
| 50 | REGENTS UNIV OF CALIFORNIA UCSF | SAN FRANCISCO | CA | PHYSICIAN ASSISTANT | 277 | 562 | $70,610 | $126 | premium | 3.2% | (415) 476-1000 |
| 51 | SPECTRUM HEALTH PRIMARY CARE PARTNERS | GRAND RAPIDS | MI | PHYSICIAN ASSISTANT | 2255 | 560 | $29,308 | $52 | premium | 11.7% | (616) 885-5000 |
| 52 | FAIRVIEW EXPRESS CARE | MINNEAPOLIS | MN | PHYSICIAN ASSISTANT | 2007 | 549 | $49,865 | $91 | premium | 13.0% | (612) 672-7422 |
| 53 | UNIVERSITY OF PENN - MEDICAL GROUP | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 3505 | 544 | $43,520 | $80 | premium | 4.5% | (215) 662-2777 |
| 54 | PIEDMONT CARDIOLOGY OF ATLANTA, LLC | ATLANTA | GA | PHYSICIAN ASSISTANT | 477 | 537 | $45,738 | $85 | premium | 16.5% | (404) 605-5000 |
| 55 | CHRISTUS TRINITY CLINIC | TYLER | TX | NURSE PRACTITIONER | 1495 | 533 | $29,938 | $56 | premium | 4.3% | (903) 606-5560 |
| 56 | CHI HEALTH CLINIC SPECIALTY LLC | LINCOLN | NE | NURSE PRACTITIONER | 309 | 530 | $35,510 | $67 | premium | 28.6% | (402) 219-8000 |
| 57 | TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK | NEW YORK | NY | NURSE PRACTITIONER | 2273 | 527 | $73,780 | $140 | premium | 3.6% | (212) 305-8559 |
| 58 | VIRGINIA MASON MEDICAL CENTER | SEATTLE | WA | PHYSICIAN ASSISTANT | 879 | 516 | $34,066 | $66 | premium | 9.6% | (206) 223-6600 |
| 59 | CARDIOVASCULAR MEDICAL GROUP OF SOUTHERN CALIFORNIA | BEVERLY HILLS | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 11 | 507 | $122,950 | $243 | premium | 2.9% | (310) 278-3400 |
| 60 | CS CARDIOLOGY NEWCO LLC | COLORADO SPRINGS | CO | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 46 | 503 | $59,404 | $118 | premium | 15.7% | — |
| 61 | CENTRAL FLORIDA CARDIOLOGY GROUP PA | ORLANDO | FL | NURSE PRACTITIONER | 11 | 502 | $37,650 | $75 | premium | 3.3% | (407) 841-7151 |
| 62 | CMC DEPARTMENT OF MEDICINE GROUP PA | CAMDEN | NJ | NURSE PRACTITIONER | 474 | 502 | $34,890 | $70 | premium | 7.6% | — |
| 63 | PACIFIC CENTRAL COAST HEALTH CENTERS | SANTA MARIA | CA | PHYSICIAN ASSISTANT | 249 | 498 | $29,469 | $59 | premium | 2.8% | (805) 349-8514 |
| 64 | TEMECULA VALLEY CARDIOLOGY MEDICAL GROUP INC | MURRIETA | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 7 | 492 | $29,520 | $60 | premium | 2.8% | (951) 698-4600 |
| 65 | ADVENTIST HEALTH PHYSICIANS NETWORK | HANFORD | CA | NURSE PRACTITIONER | 651 | 486 | $30,804 | $63 | premium | 2.7% | (559) 583-4695 |
| 66 | WEILL MEDICAL COLLEGE OF CORNELL | NEW YORK | NY | INTERNAL MEDICINE | 2053 | 484 | $38,830 | $80 | premium | 3.3% | (212) 746-5454 |
| 67 | MISSION HEALTH COMMUNITY MULTISPECIALTY PROVIDERS LLC | ASHEVILLE | NC | PHYSICIAN ASSISTANT | 593 | 483 | $32,844 | $68 | premium | 5.9% | (828) 213-1740 |
| 68 | CRMC MSO SUB 1 INCORPORATED | COOKEVILLE | TN | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 21 | 473 | $30,745 | $65 | premium | 8.1% | (931) 372-0405 |
| 69 | WENTWORTH DOUGLASS PHYSICIAN CORPORATION | DOVER | NH | PHYSICIAN ASSISTANT | 429 | 470 | $34,566 | $74 | premium | 28.5% | — |
| 70 | MUSC COMMUNITY PHYSICIANS | ORANGEBURG | SC | NURSE PRACTITIONER | 1307 | 468 | $45,169 | $97 | premium | 13.4% | (803) 395-3400 |
| 71 | PECONIC CARDIOLOGY PC | RIVERHEAD | NY | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 19 | 466 | $55,920 | $120 | premium | 3.1% | (631) 727-7773 |
| 72 | ALLINA HEALTH SYSTEM | MINNEAPOLIS | MN | PHYSICIAN ASSISTANT | 3855 | 464 | $40,925 | $88 | premium | 11.0% | (612) 863-4000 |
| 73 | ST FRANCIS MEDICAL GROUP LLC | MONROE | LA | NURSE PRACTITIONER | 165 | 463 | $26,391 | $57 | premium | 14.1% | (318) 966-6500 |
| 74 | CENTRAL WASHINGTON HEALTH SERVICES ASSOCIATION | WENATCHEE | WA | PHYSICIAN ASSISTANT | 700 | 462 | $38,346 | $83 | premium | 8.6% | (509) 665-6087 |
| 75 | PRESBYTERIAN HEALTHCARE SERVICES | ALBUQUERQUE | NM | PHYSICIAN ASSISTANT | 1369 | 459 | $37,962 | $83 | premium | 42.7% | (505) 841-1234 |
| 76 | VIRTUA MEDICAL GROUP, PA | VOORHEES | NJ | PHYSICIAN ASSISTANT | 1662 | 457 | $36,103 | $79 | premium | 6.9% | (856) 247-7260 |
| 77 | OHI WEST MEDICAL GROUP II LLC | ZEPHYRHILLS | FL | NURSE PRACTITIONER | 417 | 450 | $29,967 | $67 | premium | 2.9% | (813) 751-3375 |
| 78 | HEARTPLACE PLLC | PLANO | TX | INTERVENTIONAL CARDIOLOGY | 93 | 415 | $22,537 | $54 | premium | 3.4% | (972) 985-8838 |
| 79 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 415 | $45,663 | $110 | premium | 7.1% | (617) 724-0287 |
| 80 | WAKE FOREST UNIVERSITY HEALTH SCIENCES | WINSTON SALEM | NC | PHYSICIAN ASSISTANT | 2609 | 412 | $26,878 | $65 | premium | 5.0% | (336) 713-9800 |
| 81 | MEDICAL ASSOCIATES OF ENGLEWOOD PC | ENGLEWOOD | NJ | INTERNAL MEDICINE | 550 | 412 | $32,960 | $80 | premium | 6.2% | (201) 894-3158 |
| 82 | JOHNS HOPKINS COMMUNITY PHYSICIANS, INC | BALTIMORE | MD | INTERNAL MEDICINE | 760 | 405 | $27,945 | $69 | premium | 5.8% | (410) 522-9800 |
| 83 | ST VINCENT'S AMBULATORY CARE INC | JACKSONVILLE | GA | NURSE PRACTITIONER | 294 | 405 | $29,970 | $74 | premium | 12.5% | (904) 308-6900 |
| 84 | BON SECOURS MEDICAL GROUP GREENVILLE SPECIALTY CARE LLC | GREENVILLE | SC | NURSE PRACTITIONER | 288 | 403 | $18,941 | $47 | premium | 11.5% | (864) 255-1901 |
| 85 | MILLENNIUM PHYSICIAN GROUP LLC | PORT CHARLOTTE | FL | PHYSICIAN ASSISTANT | 953 | 397 | $18,353 | $46 | premium | 2.6% | (941) 255-3535 |
| 86 | AURORA MEDICAL GROUP, INC. | MILWAUKEE | WI | DIAGNOSTIC RADIOLOGY | 3696 | 392 | $120,373 | $307 | premium | 11.1% | (414) 421-8400 |
| 87 | EISENHOWER MEDICAL CENTER | RANCHO MIRAGE | CA | NURSE PRACTITIONER | 457 | 388 | $24,832 | $64 | premium | 2.2% | (760) 340-3911 |
| 88 | ALLEGHENY CLINIC | PITTSBURGH | PA | PHYSICIAN ASSISTANT | 2293 | 386 | $25,435 | $66 | premium | 3.2% | — |
| 89 | RIVERSIDE PHYSICIAN SERVICES INC | NEWPORT NEWS | VA | PHYSICIAN ASSISTANT | 793 | 386 | $19,300 | $50 | premium | 5.3% | — |
| 90 | HEART CENTRAL OF WASHINGTON PLLC | YAKIMA | WA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 5 | 384 | $24,456 | $64 | premium | 7.2% | (509) 902-3625 |
| 91 | MERCY CLINIC FORT SMITH COMMUNITIES | FORT SMITH | AR | NURSE PRACTITIONER | 349 | 379 | $21,603 | $57 | premium | 7.6% | (479) 314-5175 |
| 92 | ST. JOSEPH'S CARDIOLOGY GROUP LLC | SAVANNAH | GA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 17 | 379 | $25,105 | $66 | premium | 11.7% | (912) 927-3434 |
| 93 | ST VINCENT INFIRMARY MEDICAL CENTER | LITTLE ROCK | AR | NURSE PRACTITIONER | 47 | 377 | $28,275 | $75 | premium | 7.6% | (501) 255-6000 |
| 94 | FLORIDA HOSPITAL MEDICAL GROUP INC | MAITLAND | FL | PHYSICIAN ASSISTANT | 1634 | 376 | $26,163 | $70 | premium | 2.4% | (407) 200-2700 |
| 95 | ATLANTICARE PHYSICIAN GROUP PA | EGG HARBOR TOWNSHIP | NJ | NURSE PRACTITIONER | 507 | 374 | $18,700 | $50 | premium | 5.7% | — |
| 96 | ADVENTIST PHYSICIAN SERVICES INC | ROCKVILLE | MD | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 145 | 374 | $18,162 | $49 | premium | 5.3% | (301) 670-3000 |
| 97 | UNIVERSITY MEDICAL ASSOCIATES OF THE MEDICAL UNIVERSITY OF SOUTH CAROL | CHARLESTON | SC | PHYSICIAN ASSISTANT | 1692 | 369 | $33,664 | $91 | premium | 10.5% | (843) 792-1414 |
| 98 | MASS GENERAL BRIGHAM MEDICAL GROUP SUBURBAN MASSACHUSETTS INC | NEWTON | MA | INTERNAL MEDICINE | 535 | 367 | $40,565 | $111 | premium | 6.3% | (617) 243-6000 |
| 99 | WELLMONT CARDIOLOGY SERVICES | KINGSPORT | TN | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 138 | 366 | $20,130 | $55 | premium | 6.3% | (423) 230-5000 |
| 100 | MERCY HEALTH PHYSICIANS NORTH SPECIALTY CARE LLC | TOLEDO | OH | NURSE PRACTITIONER | 341 | 364 | $17,108 | $47 | premium | 6.9% | (419) 251-3180 |
Showing the top 100 of 974 groups — the full ranking is part of the market analytics platform — built, not launched yet. Notify me at launch →
*Share of the state's disclosed Medicare-FFS services for the primary code, counted once per clinician. "St" is the state the volume was billed from: a group appears in each state where its clinicians bill Medicare, with that state's volume and share ("City" is the group's registered location). Group figures sum clinicians affiliated with exactly one group; clinicians in several groups are listed in each group's drill-down but not volume-attributed to any single group, so shares reflect attributable volume. See Methods.
Comparing against an all-payer estimate?
These are exact counts from Medicare fee-for-service claims — roughly a third to half of most procedure markets, depending on payer mix. Modeled all-payer databases project the remainder statistically; we publish the audited floor and label it as such. Same market, different denominator. How the numbers reconcile →