93010 — Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only
9,204,408 observed fee-for-service (50%) · ~9,372,330 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; 3 states without payer-mix data excluded. 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 | 93010 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 92,123 | $4,913,680 | $53 | premium | 11.9% | — |
| 2 | CLEVELAND CLINIC | CLEVELAND | OH | PHYSICIAN ASSISTANT | 6828 | 89,105 | $6,343,408 | $71 | premium | 14.5% | — |
| 3 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 88,994 | $3,834,171 | $43 | premium | 7.9% | — |
| 4 | CEP AMERICA - CALIFORNIA | MORENO VALLEY | CA | EMERGENCY MEDICINE | 1230 | 86,652 | $5,500,484 | $63 | premium | 7.0% | (651) 243-0811 |
| 5 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 67,880 | $2,273,961 | $33 | premium | 8.8% | — |
| 6 | LEHIGH VALLEY PHYSICIAN GROUP | ALLENTOWN | PA | PHYSICIAN ASSISTANT | 2389 | 58,499 | $2,352,955 | $40 | premium | 6.3% | — |
| 7 | ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI | NEW YORK | NY | PHYSICIAN ASSISTANT | 2818 | 57,934 | $2,475,349 | $43 | premium | 5.1% | (212) 241-4812 |
| 8 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 56,694 | $2,309,344 | $41 | premium | 6.3% | (254) 724-2663 |
| 9 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 56,532 | $1,963,581 | $35 | premium | 9.0% | (617) 732-5500 |
| 10 | UNIVERSITY OF PENN - MEDICAL GROUP | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 3505 | 56,279 | $1,702,617 | $30 | premium | 6.1% | (215) 662-2777 |
| 11 | ADVOCATE HEALTH AND HOSPITALS CORPORATION | BUFFALO GROVE | IL | NURSE PRACTITIONER | 3045 | 54,526 | $1,708,248 | $31 | premium | 7.0% | (847) 459-1160 |
| 12 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 52,267 | $2,854,446 | $55 | premium | 4.6% | (212) 263-9700 |
| 13 | EISENHOWER MEDICAL CENTER | RANCHO MIRAGE | CA | NURSE PRACTITIONER | 457 | 51,815 | $1,185,500 | $23 | premium | 4.2% | (760) 340-3911 |
| 14 | HEALTHTEXAS PROVIDER NETWORK | DALLAS | TX | PHYSICIAN ASSISTANT | 2482 | 50,101 | $1,502,866 | $30 | premium | 5.6% | — |
| 15 | PIEDMONT CARDIOLOGY OF ATLANTA, LLC | ATLANTA | GA | PHYSICIAN ASSISTANT | 477 | 47,952 | $1,689,956 | $35 | premium | 12.2% | (404) 605-5000 |
| 16 | CHRISTUS TRINITY CLINIC | TYLER | TX | NURSE PRACTITIONER | 1495 | 47,759 | $965,346 | $20 | premium | 5.3% | (903) 606-5560 |
| 17 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 44,840 | $2,703,658 | $60 | premium | 3.6% | (650) 723-4000 |
| 18 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 43,140 | $2,108,630 | $49 | premium | 9.5% | (919) 684-8111 |
| 19 | INOVA HEALTH CARE SERVICES | FALLS CHURCH | VA | NURSE PRACTITIONER | 1818 | 42,231 | $1,042,867 | $25 | premium | 9.4% | — |
| 20 | UMASS MEMORIAL MEDICAL GROUP INC | WORCESTER | MA | PHYSICIAN ASSISTANT | 2483 | 42,146 | $2,772,842 | $66 | premium | 6.7% | (508) 334-1000 |
| 21 | WELLSTAR MEDICAL GROUP LLC | MARIETTA | GA | NURSE PRACTITIONER | 3060 | 41,193 | $1,228,478 | $30 | premium | 10.5% | (770) 422-2004 |
| 22 | CARDIOLOGY CONSULTANTS OF PHILADELPHIA PC | PHILADELPHIA | PA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 143 | 39,562 | $2,096,786 | $53 | premium | 4.3% | (215) 463-5333 |
| 23 | TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK | NEW YORK | NY | NURSE PRACTITIONER | 2273 | 39,479 | $2,359,650 | $60 | premium | 3.5% | (212) 305-8559 |
| 24 | WEILL MEDICAL COLLEGE OF CORNELL | NEW YORK | NY | INTERNAL MEDICINE | 2053 | 39,100 | $1,564,182 | $40 | premium | 3.5% | (212) 746-5454 |
| 25 | VIRTUA MEDICAL GROUP, PA | VOORHEES | NJ | PHYSICIAN ASSISTANT | 1662 | 39,075 | $979,345 | $25 | premium | 7.9% | (856) 247-7260 |
| 26 | HH HEART CENTER, LLC | HUNTSVILLE | AL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 90 | 38,963 | $981,501 | $25 | premium | 19.0% | (256) 265-2372 |
| 27 | PROVIDENCE MEDICAL FOUNDATION | FULLERTON | CA | PHYSICIAN ASSISTANT | 1455 | 38,333 | $1,013,572 | $26 | premium | 3.1% | (714) 871-3006 |
| 28 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 38,245 | $688,410 | $18 | premium | 4.1% | — |
| 29 | OSF MULTI-SPECIALTY GROUP | PEORIA | IL | NURSE PRACTITIONER | 2091 | 38,054 | $1,816,486 | $48 | premium | 4.9% | (309) 683-5050 |
| 30 | BAPTIST HEALTH MEDICAL GROUP INC | LOUISVILLE | KY | NURSE PRACTITIONER | 2448 | 37,345 | $764,637 | $20 | premium | 13.7% | (502) 928-1050 |
| 31 | OCHSNER CLINIC LLC | NEW ORLEANS | LA | NURSE PRACTITIONER | 2839 | 35,531 | $1,485,866 | $42 | premium | 15.5% | (504) 842-3000 |
| 32 | LAHEY CLINIC INC | BURLINGTON | MA | NURSE PRACTITIONER | 1400 | 33,381 | $1,251,550 | $37 | premium | 5.3% | — |
| 33 | BAPTIST HEALTH | LITTLE ROCK | AR | NURSE PRACTITIONER | 106 | 33,249 | $731,434 | $22 | premium | 15.0% | (501) 227-7596 |
| 34 | FRANCISCAN PHYSICIAN NETWORK | INDIANAPOLIS | IN | PHYSICIAN ASSISTANT | 1151 | 32,970 | $626,499 | $19 | premium | 9.2% | — |
| 35 | COMMUNITY MEDICAL ASSOCIATES INC | LOUISVILLE | KY | NURSE PRACTITIONER | 1377 | 32,394 | $909,788 | $28 | premium | 11.9% | (502) 937-2209 |
| 36 | MAIN LINE HEALTHCARE | BRYN MAWR | PA | NURSE PRACTITIONER | 1157 | 32,039 | $976,020 | $30 | premium | 3.5% | — |
| 37 | VANDERBILT UNIVERSITY MEDICAL CENTER | NASHVILLE | TN | NURSE PRACTITIONER | 3394 | 32,003 | $1,066,206 | $33 | premium | 10.1% | (615) 322-5000 |
| 38 | UNIVERSITY OF WISCONSIN MEDICAL FOUNDATION INC | MADISON | WI | PHYSICIAN ASSISTANT | 2523 | 31,921 | $3,891,464 | $122 | premium | 11.4% | (608) 287-2050 |
| 39 | MEMORIAL CARDIOPULMONARY GROUP | NEW YORK | NY | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 26 | 31,766 | $1,588,300 | $50 | premium | 2.8% | (212) 639-2000 |
| 40 | REGENTS OF THE UNIVERSITY OF MICHIGAN | ANN ARBOR | MI | INTERNAL MEDICINE | 3330 | 31,482 | $2,282,994 | $73 | premium | 6.3% | (734) 763-5459 |
| 41 | RIVERSIDE PHYSICIAN SERVICES INC | NEWPORT NEWS | VA | PHYSICIAN ASSISTANT | 793 | 31,272 | $531,844 | $17 | premium | 7.0% | — |
| 42 | ST LUKES PHYSICIAN GROUP INC | BETHLEHEM | PA | PHYSICIAN ASSISTANT | 2164 | 30,457 | $1,505,158 | $49 | premium | 3.3% | (484) 526-2400 |
| 43 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | LOS ANGELES | CA | INTERNAL MEDICINE | 1424 | 29,454 | $1,359,504 | $46 | premium | 2.4% | (310) 825-7922 |
| 44 | UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL CENTER AT DALLAS | DALLAS | TX | PHYSICIAN ASSISTANT | 3200 | 29,054 | $1,098,053 | $38 | premium | 3.2% | (214) 633-5555 |
| 45 | OHIOHEALTH CORPORATION | COLUMBUS | OH | PHYSICIAN ASSISTANT | 2282 | 28,898 | $542,817 | $19 | premium | 4.7% | — |
| 46 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 28,708 | $995,023 | $35 | premium | 10.5% | — |
| 47 | GEISINGER CLINIC | DANVILLE | PA | PHYSICIAN ASSISTANT | 3426 | 28,601 | $2,655,397 | $93 | premium | 3.1% | (570) 271-6144 |
| 48 | YALE UNIVERSITY | NEW HAVEN | CT | PHYSICIAN ASSISTANT | 2649 | 27,812 | $1,389,981 | $50 | premium | 13.5% | (203) 688-4242 |
| 49 | BARNABAS HEALTH MEDICAL GROUP PC | LIVINGSTON | NJ | NURSE PRACTITIONER | 990 | 27,641 | $1,399,812 | $51 | premium | 5.6% | — |
| 50 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 27,307 | $948,579 | $35 | premium | 4.3% | (617) 724-0287 |
| 51 | GEORGIA HEART INSTITUTE LLC | GAINESVILLE | GA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 128 | 26,360 | $876,630 | $33 | premium | 6.7% | (770) 534-2020 |
| 52 | UNIVERSITY PHYSICIANS INCORPORATED | AURORA | CO | PHYSICIAN ASSISTANT | 3122 | 26,254 | $1,128,922 | $43 | premium | 14.7% | (720) 777-1234 |
| 53 | UNIVERSITY OF PITTSBURGH PHYSICIANS | PITTSBURGH | PA | DIAGNOSTIC RADIOLOGY | 4291 | 26,171 | $810,083 | $31 | premium | 2.8% | — |
| 54 | JOHN MUIR PHYSICIAN NETWORK | WALNUT CREEK | CA | FAMILY PRACTICE | 489 | 25,818 | $697,086 | $27 | premium | 2.1% | (925) 296-9720 |
| 55 | MAINEHEALTH | PORTLAND | ME | NURSE PRACTITIONER | 2574 | 25,338 | $900,420 | $36 | premium | 31.8% | (207) 885-9905 |
| 56 | STONY BROOK INTERNISTS UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | HOSPITALIST | 414 | 25,190 | $1,007,600 | $40 | premium | 2.2% | (631) 444-1560 |
| 57 | SENTARA MEDICAL GROUP | NORFOLK | VA | PHYSICIAN ASSISTANT | 1404 | 24,977 | $458,034 | $18 | premium | 5.6% | — |
| 58 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 24,756 | $721,695 | $29 | premium | 33.0% | (801) 261-8346 |
| 59 | TRAVIS COUNTY EMERGENCY PHYSICIANS PA | HOUSTON | TX | EMERGENCY MEDICINE | 256 | 24,742 | $1,693,274 | $68 | premium | 2.7% | (713) 790-3311 |
| 60 | LEE HEALTH SYSTEM INC | FORT MYERS | FL | NURSE PRACTITIONER | 1370 | 24,611 | $888,320 | $36 | premium | 2.6% | (239) 343-9888 |
| 61 | WAKE FOREST UNIVERSITY HEALTH SCIENCES | WINSTON SALEM | NC | PHYSICIAN ASSISTANT | 2609 | 23,978 | $712,564 | $30 | premium | 5.3% | (336) 713-9800 |
| 62 | BAYSTATE MEDICAL PRACTICES INC | SPRINGFIELD | MA | PHYSICIAN ASSISTANT | 1326 | 23,831 | $516,011 | $22 | premium | 3.8% | — |
| 63 | AURORA MEDICAL GROUP, INC. | MILWAUKEE | WI | DIAGNOSTIC RADIOLOGY | 3696 | 23,502 | $2,376,625 | $101 | premium | 8.4% | (414) 421-8400 |
| 64 | INTEGRIS CARDIOVASCULAR PHYSICIANS LLC | OKLAHOMA CITY | OK | PHYSICIAN ASSISTANT | 114 | 23,352 | $537,096 | $23 | premium | 10.5% | (405) 951-4345 |
| 65 | LEXINGTON HEALTH INC | WEST COLUMBIA | SC | NURSE PRACTITIONER | 909 | 23,152 | $836,976 | $36 | premium | 8.5% | (803) 744-4900 |
| 66 | COMMUNITY CARE NETWORK INC | MUNSTER | IN | NURSE PRACTITIONER | 379 | 23,142 | $463,740 | $20 | premium | 6.5% | (219) 836-4563 |
| 67 | THE EMORY CLINIC INC | ATLANTA | GA | NURSE PRACTITIONER | 3484 | 22,997 | $1,005,833 | $44 | premium | 5.8% | (404) 778-7525 |
| 68 | CENTENNIAL HEART LLC | NASHVILLE | TN | NURSE PRACTITIONER | 121 | 22,709 | $602,884 | $27 | premium | 7.2% | (615) 515-1900 |
| 69 | IHA HEALTH SERVICES CORPORATION | YPSILANTI | MI | PHYSICIAN ASSISTANT | 1144 | 22,691 | $637,591 | $28 | premium | 4.6% | — |
| 70 | PRISMA HEALTH MEDICAL GROUP-MIDLANDS | COLUMBIA | SC | PHYSICIAN ASSISTANT | 1017 | 22,672 | $794,011 | $35 | premium | 8.3% | (803) 749-5101 |
| 71 | SWEDISH HEALTH SERVICES | SEATTLE | WA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 78 | 22,415 | $672,121 | $30 | premium | 8.3% | (206) 386-6000 |
| 72 | REGENTS OF THE UNIV OF CA | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 1608 | 22,061 | $1,170,111 | $53 | premium | 1.8% | (877) 827-7463 |
| 73 | PRESBYTERIAN HEALTHCARE SERVICES | ALBUQUERQUE | NM | PHYSICIAN ASSISTANT | 1369 | 21,170 | $424,919 | $20 | premium | 28.7% | (505) 841-1234 |
| 74 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 21,015 | $1,848,814 | $88 | premium | 13.7% | (800) 603-0558 |
| 75 | KINGS PHYSICIAN SERVICES PC | BROOKLYN | NY | PHYSICIAN ASSISTANT | 664 | 21,011 | $719,425 | $34 | premium | 1.9% | — |
| 76 | BEAUMONT MEDICAL GROUP- SPECIALTY SERVICES | ROYAL OAK | MI | PHYSICIAN ASSISTANT | 833 | 20,997 | $417,869 | $20 | premium | 4.2% | (248) 898-5058 |
| 77 | HARTFORD HEALTHCARE MEDICAL GROUP SPECIALISTS PLLC | STORRS | CT | PHYSICIAN ASSISTANT | 1493 | 20,839 | $993,608 | $48 | premium | 10.1% | (860) 724-2579 |
| 78 | THE HEART GROUP OF LANCASTER GENERAL HEALTH | LANCASTER | PA | NURSE PRACTITIONER | 61 | 20,468 | $377,376 | $18 | premium | 2.2% | (717) 544-8300 |
| 79 | TEXAS MEDICINE RESOURCES, LLP | PLANO | TX | EMERGENCY MEDICINE | 239 | 20,244 | $1,489,621 | $74 | premium | 2.2% | (972) 981-8000 |
| 80 | MUSC COMMUNITY PHYSICIANS | ORANGEBURG | SC | NURSE PRACTITIONER | 1307 | 20,202 | $1,551,589 | $77 | premium | 7.4% | (803) 395-3400 |
| 81 | MASS GENERAL BRIGHAM MEDICAL GROUP SUBURBAN MASSACHUSETTS INC | NEWTON | MA | INTERNAL MEDICINE | 535 | 20,164 | $701,420 | $35 | premium | 3.2% | (617) 243-6000 |
| 82 | MAIMONIDES CARDIOLOGY FPP | BROOKLYN | NY | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 43 | 20,007 | $439,674 | $22 | premium | 1.8% | (718) 283-7735 |
| 83 | POUDRE VALLEY MEDICAL GROUP LLC | COLORADO SPRINGS | CO | PHYSICIAN ASSISTANT | 2390 | 20,000 | $447,699 | $22 | premium | 11.2% | — |
| 84 | JOHNS HOPKINS COMMUNITY PHYSICIANS, INC | BALTIMORE | MD | INTERNAL MEDICINE | 760 | 19,971 | $419,391 | $21 | premium | 5.1% | (410) 522-9800 |
| 85 | THE ASSOCIATION OF UNIVERSITY PHYSICIANS | SEATTLE | WA | PHYSICIAN ASSISTANT | 3612 | 19,954 | $502,682 | $25 | premium | 7.4% | (206) 364-0500 |
| 86 | PINNACLE HEALTH CARDIOVASCULAR INSTITUTE INC | MECHANICSBURG | PA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 113 | 19,872 | $771,490 | $39 | premium | 2.1% | (717) 731-0101 |
| 87 | MERCY CLINIC HEART AND VASCULAR LLC | SAINT LOUIS | MO | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 112 | 19,819 | $530,706 | $27 | premium | 6.4% | (314) 842-0602 |
| 88 | NORTHSIDE CARDIOVASCULAR PROFESSIONAL SERVICES, LLC | ATLANTA | GA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 144 | 19,711 | $555,528 | $28 | premium | 5.0% | (404) 851-8000 |
| 89 | WAKE EMERGENCY PHYSICIANS PA | RALEIGH | NC | EMERGENCY MEDICINE | 275 | 19,580 | $902,365 | $46 | premium | 4.3% | (919) 350-8000 |
| 90 | OHH PHYSICIANS LLC | OKLAHOMA CITY | OK | INTERVENTIONAL CARDIOLOGY | 134 | 19,460 | $486,500 | $25 | premium | 8.8% | (405) 608-3800 |
| 91 | NUVANCE HEALTH MEDICAL PRACTICE CT INC | DANBURY | CT | PHYSICIAN ASSISTANT | 748 | 19,432 | $641,223 | $33 | premium | 9.4% | (203) 739-7118 |
| 92 | MERCY HEALTH PHYSICIANS CINCINNATI SPECIALTY CARE LLC | CINCINNATI | OH | NURSE PRACTITIONER | 347 | 19,378 | $393,287 | $20 | premium | 3.2% | (513) 751-4222 |
| 93 | MEMORIAL HERMANN HOSPITAL BASED PHYSICIAN GROUP | HOUSTON | TX | EMERGENCY MEDICINE | 273 | 19,313 | $1,088,388 | $56 | premium | 2.1% | (713) 338-6565 |
| 94 | MCV ASSOCIATED PHYSICIANS | RICHMOND | VA | NURSE PRACTITIONER | 1791 | 19,298 | $882,747 | $46 | premium | 4.3% | (804) 828-9000 |
| 95 | JOHNS HOPKINS UNIVERSITY | BALTIMORE | MD | NURSE PRACTITIONER | 2900 | 19,125 | $560,390 | $29 | premium | 4.9% | (410) 502-4340 |
| 96 | ST LUKES CLINIC-TREASURE VALLEY LLC | BOISE | ID | PHYSICIAN ASSISTANT | 1159 | 19,110 | $354,698 | $19 | premium | 28.7% | (208) 381-4210 |
| 97 | UNIVERSITY MEDICAL ASSOCIATES OF THE MEDICAL UNIVERSITY OF SOUTH CAROL | CHARLESTON | SC | PHYSICIAN ASSISTANT | 1692 | 19,022 | $1,434,096 | $75 | premium | 6.9% | (843) 792-1414 |
| 98 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 18,939 | $611,085 | $32 | premium | 1.5% | (858) 455-9100 |
| 99 | UT PHYSICIANS | HOUSTON | TX | NURSE PRACTITIONER | 1758 | 18,891 | $835,087 | $44 | premium | 2.1% | (713) 566-5000 |
| 100 | EMERGENCY PHYSICIANS PROFESSIONAL ASSOCIATION | BLOOMINGTON | MN | EMERGENCY MEDICINE | 268 | 18,832 | $1,258,720 | $67 | premium | 8.8% | (952) 835-9880 |
Showing the top 100 of 3,569 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 →