166,299 observed fee-for-service (50%) · ~165,272 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; 2 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 payer split, and this market total scaled to all of Medicare, labeled as an estimate.
Or just look at it: nuclear heart imaging (78452) in Arizona is open as a live example — the full paid view, real data.
View the live example →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 activate to sort | City activate to sort | St activate to sort | Specialty activate to sort | Providers activate to sort | 71271 svcs sorted descending — activate to reverse | Submitted charges activate to sort | Avg charge activate to sort | Medicare $ locked column | Share* activate to sort | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 2,949 | $1,314,961 | $446 | premium | 22.4% | (888) 972-9700 |
| 2 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 2,409 | $508,966 | $211 | premium | 11.9% | (817) 321-0470 |
| 3 | COLUMBUS RADIOLOGY CORP | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 288 | 2,098 | $1,950,124 | $930 | premium | 11.3% | (614) 228-7231 |
| 4 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 62 | 1,638 | $495,470 | $302 | premium | 12.4% | (888) 601-0943 |
| 5 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 1,464 | $469,117 | $320 | premium | 7.4% | (617) 724-0287 |
| 6 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 1,438 | $237,942 | $165 | premium | 9.8% | (616) 363-7272 |
| 7 | UMASS MEMORIAL MEDICAL GROUP INC | WORCESTER | MA | PHYSICIAN ASSISTANT | 2483 | 1,431 | $356,319 | $249 | premium | 7.3% | (508) 334-1000 |
| 8 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 1,385 | $208,093 | $150 | premium | 5.9% | (252) 752-5000 |
| 9 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 1,337 | $720,965 | $539 | premium | 5.8% | (916) 681-8852 |
| 10 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 1,270 | $163,512 | $129 | premium | 12.9% | — |
| 11 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 1,256 | $737,502 | $587 | premium | 5.4% | (704) 362-1945 |
| 12 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 1,232 | $234,080 | $190 | premium | 6.6% | — |
| 13 | BEAUMONT MEDICAL GROUP HOSPITAL BASED SERVICES | TROY | MI | DIAGNOSTIC RADIOLOGY | 583 | 1,229 | $382,336 | $311 | premium | 8.4% | (248) 964-1187 |
| 14 | RHODE ISLAND MEDICAL IMAGING INC | EAST PROVIDENCE | RI | DIAGNOSTIC RADIOLOGY | 109 | 1,136 | $385,204 | $339 | premium | 45.8% | (401) 626-3900 |
| 15 | WINCHESTER RADIOLOGISTS PC | WINCHESTER | VA | DIAGNOSTIC RADIOLOGY | 79 | 1,090 | $263,678 | $242 | premium | 6.4% | (540) 686-1600 |
| 16 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 1,022 | $660,495 | $646 | premium | 4.2% | (631) 225-7200 |
| 17 | TOLEDO RADIOLOGICAL ASSOCIATES INC | COLDWATER | OH | DIAGNOSTIC RADIOLOGY | 51 | 981 | $152,868 | $156 | premium | 5.3% | (517) 279-5400 |
| 18 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 976 | $257,328 | $264 | premium | 4.9% | — |
| 19 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 964 | $87,034 | $90 | premium | 4.8% | (254) 724-2663 |
| 20 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 951 | $123,630 | $130 | premium | 5.6% | (804) 288-8327 |
| 21 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 950 | $463,578 | $488 | premium | 4.1% | (916) 983-7476 |
| 22 | PENINSULA RADIOLOGICAL ASSOCIATES LIMITED | NEWPORT NEWS | VA | DIAGNOSTIC RADIOLOGY | 65 | 942 | $145,068 | $154 | premium | 5.5% | (757) 594-3900 |
| 23 | RADIOLOGY CONSULTANTS OF IOWA PLC | CEDAR RAPIDS | IA | DIAGNOSTIC RADIOLOGY | 72 | 931 | $125,615 | $135 | premium | 13.1% | (319) 364-0121 |
| 24 | DRS HARRIS BIRKHILL WANG SONGE AND ASSOC PC | DEARBORN | MI | DIAGNOSTIC RADIOLOGY | 62 | 884 | $103,428 | $117 | premium | 6.0% | (313) 593-7301 |
| 25 | ADVANCED BERKSHIRE MEDICAL IMAGING PC | PITTSFIELD | MA | DIAGNOSTIC RADIOLOGY | 11 | 864 | $133,920 | $155 | premium | 4.4% | (413) 447-2451 |
| 26 | SPRINGFIELD CLINIC, LLP | SPRINGFIELD | IL | NURSE PRACTITIONER | 686 | 861 | $916,059 | $1,064 | premium | 4.3% | (217) 544-6464 |
| 27 | SPECTRUM HEALTHCARE PARTNERS PA | PORTLAND | ME | DIAGNOSTIC RADIOLOGY | 281 | 854 | $135,747 | $159 | premium | 40.8% | (207) 828-2160 |
| 28 | NORTHSIDE RADIOLOGY ASSOCIATES LLC | ATLANTA | GA | DIAGNOSTIC RADIOLOGY | 370 | 819 | $764,946 | $934 | premium | 7.6% | (404) 851-6577 |
| 29 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 816 | $243,118 | $298 | premium | 3.5% | (919) 684-8111 |
| 30 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 816 | $132,953 | $163 | premium | 3.5% | (704) 332-1291 |
| 31 | ARKANSAS HEALTH GROUP | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 666 | 815 | $178,656 | $219 | premium | 20.8% | (501) 202-2093 |
| 32 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 103 | 813 | $400,237 | $492 | premium | 4.0% | (281) 206-9020 |
| 33 | RADIOLOGY ASSOCIATES OF NORTHERN KENTUCKY PLLC | EDGEWOOD | KY | DIAGNOSTIC RADIOLOGY | 56 | 804 | $102,108 | $127 | premium | 9.9% | (859) 301-2160 |
| 34 | WEST COUNTY RADIOLOGICAL GROUP INC | SAINT LOUIS | MO | DIAGNOSTIC RADIOLOGY | 104 | 786 | $175,238 | $223 | premium | 6.1% | (314) 941-5600 |
| 35 | RADIOLOGISTS OF UNIV OF ROCHESTER | ROCHESTER | NY | DIAGNOSTIC RADIOLOGY | 134 | 781 | $171,820 | $220 | premium | 3.2% | — |
| 36 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 243 | 774 | $163,314 | $211 | premium | 4.2% | (614) 566-5600 |
| 37 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 731 | $94,026 | $129 | premium | 3.8% | — |
| 38 | RADIOLOGY AND IMAGING INC | SPRINGFIELD | MA | DIAGNOSTIC RADIOLOGY | 60 | 724 | $147,687 | $204 | premium | 3.7% | (413) 827-7400 |
| 39 | PROGRESSIVE PHYSICIAN ASSOC INC | PHILLIPSBURG | PA | DIAGNOSTIC RADIOLOGY | 160 | 724 | $156,084 | $216 | premium | 3.8% | (908) 859-6700 |
| 40 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NJ | DIAGNOSTIC RADIOLOGY | 91 | 715 | $232,974 | $326 | premium | 7.9% | (631) 225-7200 |
| 41 | MASS GENERAL BRIGHAM COMMUNITY PHYSICIANS INC | MEDFORD | MA | DIAGNOSTIC RADIOLOGY | 424 | 714 | $153,467 | $215 | premium | 3.6% | (781) 395-4909 |
| 42 | RADIOLOGY CONSULTANTS PC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 46 | 710 | $126,380 | $178 | premium | 13.9% | (402) 717-4760 |
| 43 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 693 | $152,286 | $220 | premium | 3.5% | (617) 732-5500 |
| 44 | ROPER RADIOLOGISTS PA | CHARLESTON | SC | DIAGNOSTIC RADIOLOGY | 40 | 688 | $414,300 | $602 | premium | 7.0% | (843) 724-2161 |
| 45 | DIAGNOSTIC IMAGING ASSOCIATES, P.C. | DES MOINES | IA | DIAGNOSTIC RADIOLOGY | 21 | 687 | $132,591 | $193 | premium | 9.7% | (515) 643-2667 |
| 46 | TRISTATE IMG (IMAGING MEDICAL GROUP) INC | CINCINNATI | OH | DIAGNOSTIC RADIOLOGY | 44 | 678 | $105,090 | $155 | premium | 3.7% | (513) 865-1331 |
| 47 | OWENSBORO HEALTH MEDICAL GROUP INC | OWENSBORO | KY | NURSE PRACTITIONER | 467 | 675 | $78,173 | $116 | premium | 8.3% | — |
| 48 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 672 | $120,960 | $180 | premium | 9.0% | (812) 422-3254 |
| 49 | RADIOLOGY ASSOCIATES OF RICHMOND INC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 70 | 668 | $140,210 | $210 | premium | 3.9% | (804) 272-8806 |
| 50 | RADIOLOGIC CENTER INC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 20 | 641 | $113,457 | $177 | premium | 12.6% | (402) 390-0606 |
| 51 | SPARTANBURG MEDICAL CENTER | SPARTANBURG | SC | NURSE PRACTITIONER | 1070 | 638 | $111,154 | $174 | premium | 6.5% | (864) 587-3000 |
| 52 | VISTA RADIOLOGY, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 68 | 635 | $126,940 | $200 | premium | 5.2% | (865) 546-9484 |
| 53 | HAMPTON ROADS RADIOLOGY ASSOCIATES PC | VIRGINIA BEACH | VA | DIAGNOSTIC RADIOLOGY | 37 | 629 | $118,881 | $189 | premium | 3.7% | (757) 916-9630 |
| 54 | CENTRAL ILLINOIS RADIOLOGICAL ASSOCIATES LTD | PEORIA | IL | DIAGNOSTIC RADIOLOGY | 196 | 628 | $159,852 | $255 | premium | 3.2% | (309) 655-2000 |
| 55 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 616 | $200,803 | $326 | premium | 2.9% | (239) 936-2316 |
| 56 | CAPE RADIOLOGY GROUP PC | CAPE GIRARDEAU | MO | DIAGNOSTIC RADIOLOGY | 53 | 613 | $93,789 | $153 | premium | 4.7% | (573) 334-6071 |
| 57 | SMI IMAGING LLC | PHOENIX | AZ | DIAGNOSTIC RADIOLOGY | 364 | 612 | $324,940 | $531 | premium | 11.5% | (480) 753-6161 |
| 58 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 601 | $230,463 | $383 | premium | 4.7% | (314) 747-3000 |
| 59 | MILLENNIUM PHYSICIAN GROUP LLC | PORT CHARLOTTE | FL | PHYSICIAN ASSISTANT | 953 | 581 | $165,209 | $284 | premium | 2.7% | (941) 255-3535 |
| 60 | MULTICARE HEALTH SYSTEM | GIG HARBOR | WA | NURSE PRACTITIONER | 2289 | 575 | $124,968 | $217 | premium | 6.6% | — |
| 61 | ATRIUS HEALTH INC | BOSTON | MA | NURSE PRACTITIONER | 1196 | 571 | $238,286 | $417 | premium | 2.9% | (617) 421-1000 |
| 62 | GRAND TRAVERSE RADIOLOGISTS PC | TRAVERSE CITY | MI | DIAGNOSTIC RADIOLOGY | 32 | 565 | $103,395 | $183 | premium | 3.8% | (231) 935-5000 |
| 63 | SOUTHERN NEW ENGLAND RADIOLOGY INC | FALL RIVER | MA | DIAGNOSTIC RADIOLOGY | 22 | 561 | $84,150 | $150 | premium | 2.8% | (508) 679-7136 |
| 64 | DIAGNOSTIC X-RAY PHYSICIANS, PSC | LOUISVILLE | KY | DIAGNOSTIC RADIOLOGY | 36 | 552 | $56,856 | $103 | premium | 6.8% | (502) 893-1000 |
| 65 | TOWER HEALTH MEDICAL GROUP | WEST READING | PA | INTERNAL MEDICINE | 590 | 551 | $86,380 | $157 | premium | 2.9% | (484) 628-5455 |
| 66 | ST PAUL PLACE SPECIALISTS, INC. | BALTIMORE | MD | PHYSICIAN ASSISTANT | 337 | 543 | $129,105 | $238 | premium | 4.1% | (410) 663-8100 |
| 67 | RADIOLOGY GROUP PC SC | DAVENPORT | IA | DIAGNOSTIC RADIOLOGY | 18 | 533 | $159,900 | $300 | premium | 7.5% | (563) 344-5490 |
| 68 | WEST VIRGINIA UNIVERSITY MEDICAL CORPORATION | MORGANTOWN | WV | PHYSICIAN ASSISTANT | 1996 | 528 | $79,728 | $151 | premium | 17.5% | (304) 598-4865 |
| 69 | SOUTHERN DELAWARE IMAGING ASSOC | LEWES | DE | DIAGNOSTIC RADIOLOGY | 40 | 523 | $75,607 | $145 | premium | 14.8% | (302) 645-3636 |
| 70 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 520 | $86,840 | $167 | premium | 2.6% | — |
| 71 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 515 | $330,921 | $643 | premium | 2.2% | (415) 600-1020 |
| 72 | RUSH UNIVERSITY MEDICAL GROUP | CHICAGO | IL | PHYSICIAN ASSISTANT | 1496 | 504 | $84,672 | $168 | premium | 2.5% | (312) 563-2875 |
| 73 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 502 | $94,927 | $189 | premium | 5.6% | (973) 971-6866 |
| 74 | TRIAD RADIOLOGY ASSOCIATES PLLC | WINSTON SALEM | NC | DIAGNOSTIC RADIOLOGY | 78 | 500 | $100,500 | $201 | premium | 2.1% | (336) 718-7800 |
| 75 | WINDSONG RADIOLOGY GROUP P C | WILLIAMSVILLE | NY | DIAGNOSTIC RADIOLOGY | 23 | 498 | $319,683 | $642 | premium | 2.0% | (716) 631-2500 |
| 76 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 488 | $220,812 | $452 | premium | 2.0% | (914) 241-1050 |
| 77 | RADIOLOGY INC | HUNTINGTON | WV | DIAGNOSTIC RADIOLOGY | 28 | 465 | $98,305 | $211 | premium | 15.4% | (304) 526-1140 |
| 78 | SMB RADIOLOGY P A | GULFPORT | MS | DIAGNOSTIC RADIOLOGY | 23 | 444 | $88,800 | $200 | premium | 11.2% | (228) 314-7226 |
| 79 | QUANTUM RADIOLOGY PC | MARIETTA | GA | DIAGNOSTIC RADIOLOGY | 104 | 443 | $101,890 | $230 | premium | 4.1% | (770) 732-4000 |
| 80 | LAHEY CLINIC INC | BURLINGTON | MA | NURSE PRACTITIONER | 1400 | 441 | $103,419 | $235 | premium | 2.2% | — |
| 81 | SDMI, LLC | LAS VEGAS | NV | DIAGNOSTIC RADIOLOGY | 36 | 432 | $199,291 | $461 | premium | 28.0% | (702) 732-6000 |
| 82 | UNMC PHYSICIANS | OMAHA | NE | PHYSICIAN ASSISTANT | 1514 | 431 | $53,616 | $124 | premium | 8.5% | (402) 559-4000 |
| 83 | DUPAGE MEDICAL GROUP LTD | GLEN ELLYN | IL | PHYSICIAN ASSISTANT | 1323 | 430 | $198,379 | $461 | premium | 2.2% | (630) 469-9200 |
| 84 | REGIONAL RADIOLOGY, LLC | COVINGTON | LA | DIAGNOSTIC RADIOLOGY | 40 | 428 | $23,826 | $56 | premium | 8.4% | (985) 898-4000 |
| 85 | HURON VALLEY RADIOLOGY PC | YPSILANTI | MI | DIAGNOSTIC RADIOLOGY | 77 | 425 | $75,319 | $177 | premium | 2.9% | (734) 712-8350 |
| 86 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 419 | $66,621 | $159 | premium | 2.5% | (757) 466-6870 |
| 87 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 244 | 409 | $181,015 | $443 | premium | 1.7% | (212) 772-3111 |
| 88 | ADIRONDACK RADIOLOGY ASSOCIATES PC | SARATOGA SPRINGS | NY | DIAGNOSTIC RADIOLOGY | 18 | 408 | $157,567 | $386 | premium | 1.7% | (518) 587-7773 |
| 89 | REGIONAL HEALTH SERVICES INC | ERIE | PA | PHYSICIAN ASSISTANT | 588 | 407 | $89,133 | $219 | premium | 2.1% | — |
| 90 | ASHLAND HOSPITAL CORPORATION | ASHLAND | KY | NURSE PRACTITIONER | 170 | 406 | $60,578 | $149 | premium | 5.0% | (606) 324-8060 |
| 91 | SAINT LUKES PHYSICIAN GROUP INC | KANSAS CITY | MO | NURSE PRACTITIONER | 1228 | 400 | $211,461 | $529 | premium | 3.1% | — |
| 92 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 400 | $293,519 | $734 | premium | 1.6% | (212) 263-9700 |
| 93 | SARAH BUSH LINCOLN HEALTH CENTER | MATTOON | IL | NURSE PRACTITIONER | 405 | 399 | $39,067 | $98 | premium | 2.0% | — |
| 94 | ADVANCED RADIOLOGY P A | BALTIMORE | OH | DIAGNOSTIC RADIOLOGY | 161 | 397 | $176,476 | $445 | premium | 2.1% | (888) 972-9700 |
| 95 | NORTHEAST RADIOLOGY ASSOCIATES LLP | NEWBURYPORT | MA | DIAGNOSTIC RADIOLOGY | 10 | 395 | $63,990 | $162 | premium | 2.0% | (978) 463-1120 |
| 96 | QUANTUM IMAGING AND THERAPEUTIC ASSOCIATES INC | HARRISBURG | PA | DIAGNOSTIC RADIOLOGY | 90 | 383 | $75,818 | $198 | premium | 2.0% | (717) 932-5200 |
| 97 | SANFORD MEDICAL CENTER FARGO | FARGO | ND | NURSE PRACTITIONER | 1198 | 381 | $61,714 | $162 | premium | 20.6% | (701) 234-2000 |
| 98 | BEAUFORT MEDICAL IMAGING INC | BEAUFORT | SC | DIAGNOSTIC RADIOLOGY | 9 | 378 | $86,940 | $230 | premium | 3.8% | (843) 522-5200 |
| 99 | MOUNT SHASTA RADIOLOGY INC | MOUNT SHASTA | CA | DIAGNOSTIC RADIOLOGY | 5 | 375 | $95,625 | $255 | premium | 1.6% | (530) 926-6111 |
| 100 | RADIOLOGY PHYSICIANS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 61 | 374 | $58,913 | $158 | premium | 2.0% | (937) 208-8000 |
Showing the top 100 of 825 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 →