74018 — X-ray of abdomen, 1 view
691,909 observed fee-for-service (49%) · ~722,180 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 | 74018 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 13,007 | $472,718 | $36 | premium | 8.9% | (817) 321-0470 |
| 2 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 103 | 8,792 | $473,564 | $54 | premium | 6.0% | (281) 206-9020 |
| 3 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 6,433 | $442,807 | $69 | premium | 3.7% | (650) 723-4000 |
| 4 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 6,287 | $417,004 | $66 | premium | 8.2% | (704) 362-1945 |
| 5 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 6,137 | $301,736 | $49 | premium | 6.9% | — |
| 6 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 5,979 | $362,175 | $61 | premium | 14.2% | (507) 284-2511 |
| 7 | OSU RADIOLOGY LLC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 174 | 5,752 | $201,953 | $35 | premium | 6.8% | (614) 293-8315 |
| 8 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 5,743 | $244,784 | $43 | premium | 11.2% | (616) 363-7272 |
| 9 | SINGLETON ASSOCIATES PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 769 | 5,581 | $839,352 | $150 | premium | 3.8% | (855) 504-4544 |
| 10 | MORI BEAN AND BROOKS INC | ORANGE PARK | FL | DIAGNOSTIC RADIOLOGY | 947 | 5,009 | $361,389 | $72 | premium | 4.1% | (904) 399-5550 |
| 11 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 4,725 | $264,770 | $56 | premium | 2.7% | (916) 681-8852 |
| 12 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 4,555 | $150,315 | $33 | premium | 11.2% | (812) 422-3254 |
| 13 | UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL CENTER AT DALLAS | DALLAS | TX | PHYSICIAN ASSISTANT | 3200 | 4,363 | $486,167 | $111 | premium | 3.0% | (214) 633-5555 |
| 14 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 4,342 | $136,329 | $31 | premium | 5.6% | (252) 752-5000 |
| 15 | ARKANSAS HEALTH GROUP | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 666 | 4,295 | $146,019 | $34 | premium | 15.9% | (501) 202-2093 |
| 16 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 3,986 | $295,675 | $74 | premium | 3.7% | (212) 263-9700 |
| 17 | VIRGINIA UROLOGY CENTER | RICHMOND | VA | UROLOGY | 90 | 3,949 | $315,430 | $80 | premium | 7.2% | (804) 330-9105 |
| 18 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 3,949 | $135,313 | $34 | premium | 4.5% | — |
| 19 | FLORIDA CLINICAL PRACTICE ASSOCIATION INC | GAINESVILLE | FL | NURSE PRACTITIONER | 1912 | 3,943 | $198,700 | $50 | premium | 3.2% | (352) 265-8990 |
| 20 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 3,938 | $165,002 | $42 | premium | 2.7% | (254) 724-2663 |
| 21 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 3,885 | $118,104 | $30 | premium | 12.3% | — |
| 22 | THE ASSOCIATION OF UNIVERSITY PHYSICIANS | SEATTLE | WA | PHYSICIAN ASSISTANT | 3612 | 3,879 | $122,559 | $32 | premium | 9.8% | (206) 364-0500 |
| 23 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 3,862 | $244,234 | $63 | premium | 2.2% | (858) 455-9100 |
| 24 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 3,821 | $222,627 | $58 | premium | 2.2% | (916) 983-7476 |
| 25 | TOLEDO RADIOLOGICAL ASSOCIATES INC | COLDWATER | OH | DIAGNOSTIC RADIOLOGY | 51 | 3,697 | $102,802 | $28 | premium | 4.4% | (517) 279-5400 |
| 26 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 243 | 3,677 | $148,447 | $40 | premium | 4.4% | (614) 566-5600 |
| 27 | BEAUMONT MEDICAL GROUP HOSPITAL BASED SERVICES | TROY | MI | DIAGNOSTIC RADIOLOGY | 583 | 3,620 | $228,791 | $63 | premium | 7.1% | (248) 964-1187 |
| 28 | PHYSICIANS REFERRAL SERVICE | HOUSTON | TX | NURSE PRACTITIONER | 2696 | 3,538 | $325,051 | $92 | premium | 2.4% | (713) 592-5433 |
| 29 | REGENTS OF THE UNIVERSITY OF CALIFORNIA | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 2057 | 3,503 | $164,947 | $47 | premium | 2.0% | (800) 926-8273 |
| 30 | COLUMBUS RADIOLOGY CORP | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 288 | 3,489 | $530,962 | $152 | premium | 4.1% | (614) 228-7231 |
| 31 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 3,158 | $149,194 | $47 | premium | 3.7% | (888) 972-9700 |
| 32 | QUANTUM RADIOLOGY PC | MARIETTA | GA | DIAGNOSTIC RADIOLOGY | 104 | 3,096 | $141,823 | $46 | premium | 5.8% | (770) 732-4000 |
| 33 | RADIOLOGY PHYSICIANS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 61 | 3,094 | $103,045 | $33 | premium | 3.7% | (937) 208-8000 |
| 34 | WEST COUNTY RADIOLOGICAL GROUP INC | SAINT LOUIS | MO | DIAGNOSTIC RADIOLOGY | 104 | 3,056 | $140,112 | $46 | premium | 5.8% | (314) 941-5600 |
| 35 | UNIVERSITY OF ALABAMA HEALTH SERVICES FOUNDATION, PC | BIRMINGHAM | AL | NURSE PRACTITIONER | 2788 | 3,036 | $135,954 | $45 | premium | 9.8% | (205) 934-3460 |
| 36 | REGENTS OF THE UNIVERSITY OF MICHIGAN | ANN ARBOR | MI | INTERNAL MEDICINE | 3330 | 3,015 | $117,906 | $39 | premium | 5.9% | (734) 763-5459 |
| 37 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 2,999 | $69,871 | $23 | premium | 3.6% | — |
| 38 | RADIOLOGISTS OF UNIV OF ROCHESTER | ROCHESTER | NY | DIAGNOSTIC RADIOLOGY | 134 | 2,986 | $124,078 | $42 | premium | 2.8% | — |
| 39 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 2,959 | $117,253 | $40 | premium | 7.5% | (617) 724-0287 |
| 40 | AMERICAN RADIOLOGY CONSULTANTS PLLC | DALLAS | TX | DIAGNOSTIC RADIOLOGY | 121 | 2,934 | $114,426 | $39 | premium | 2.0% | (214) 820-3216 |
| 41 | YALE UNIVERSITY | NEW HAVEN | CT | PHYSICIAN ASSISTANT | 2649 | 2,866 | $168,385 | $59 | premium | 15.9% | (203) 688-4242 |
| 42 | DIAGNOSTIC IMAGING ALLIANCE OF LOUISVILLE PSC | LOUISVILLE | KY | DIAGNOSTIC RADIOLOGY | 28 | 2,850 | $76,950 | $27 | premium | 10.2% | (502) 896-2120 |
| 43 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 2,825 | $269,357 | $95 | premium | 2.3% | (904) 953-2000 |
| 44 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 2,819 | $126,855 | $45 | premium | 5.2% | (804) 288-8327 |
| 45 | RADIOLOGY ASSOCIATES LLC | OKLAHOMA CITY | OK | DIAGNOSTIC RADIOLOGY | 19 | 2,682 | $93,870 | $35 | premium | 9.6% | (405) 949-3011 |
| 46 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 2,640 | $248,935 | $94 | premium | 2.5% | (631) 225-7200 |
| 47 | RUSH UNIVERSITY MEDICAL GROUP | CHICAGO | IL | PHYSICIAN ASSISTANT | 1496 | 2,602 | $79,899 | $31 | premium | 2.9% | (312) 563-2875 |
| 48 | NORTHSIDE RADIOLOGY ASSOCIATES LLC | ATLANTA | GA | DIAGNOSTIC RADIOLOGY | 370 | 2,580 | $394,740 | $153 | premium | 4.9% | (404) 851-6577 |
| 49 | UT PHYSICIANS | HOUSTON | TX | NURSE PRACTITIONER | 1758 | 2,571 | $123,788 | $48 | premium | 1.8% | (713) 566-5000 |
| 50 | RADIOLOGY ASSOCIATES OF RICHMOND INC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 70 | 2,564 | $121,322 | $47 | premium | 4.7% | (804) 272-8806 |
| 51 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 2,517 | $211,792 | $84 | premium | 7.4% | (800) 603-0558 |
| 52 | UNIVERSITY OF PITTSBURGH PHYSICIANS | PITTSBURGH | PA | DIAGNOSTIC RADIOLOGY | 4291 | 2,515 | $50,300 | $20 | premium | 3.6% | — |
| 53 | KENTUCKY MEDICAL SERVICES FOUNDATION, INC | LEXINGTON | KY | DIAGNOSTIC RADIOLOGY | 989 | 2,497 | $70,119 | $28 | premium | 8.9% | (859) 257-1412 |
| 54 | STATE UNIVERSITY OF IOWA | IOWA CITY | IA | PHYSICIAN ASSISTANT | 1902 | 2,470 | $97,476 | $39 | premium | 17.2% | (319) 678-8201 |
| 55 | MAIMONIDES MEDICAL CENTER - MMC RADIOLOGY FPP | BROOKLYN | NY | DIAGNOSTIC RADIOLOGY | 57 | 2,440 | $91,470 | $37 | premium | 2.3% | (718) 283-6158 |
| 56 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 2,432 | $119,562 | $49 | premium | 3.2% | (704) 332-1291 |
| 57 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 2,397 | $136,629 | $57 | premium | 4.5% | (314) 747-3000 |
| 58 | RADIOLOGY CONSULTANTS OF TULSA, INC. | TULSA | OK | DIAGNOSTIC RADIOLOGY | 34 | 2,395 | $64,066 | $27 | premium | 8.6% | (918) 743-8838 |
| 59 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 2,344 | $66,412 | $28 | premium | 4.3% | (757) 466-6870 |
| 60 | LAKELAND RADIOLOGISTS P A | FLOWOOD | MS | DIAGNOSTIC RADIOLOGY | 29 | 2,331 | $107,037 | $46 | premium | 9.8% | (601) 936-2390 |
| 61 | FIRST UROLOGY PSC | LOUISVILLE | IN | UROLOGY | 55 | 2,308 | $115,400 | $50 | premium | 5.7% | (812) 282-3899 |
| 62 | SPECTRUM HEALTHCARE PARTNERS PA | PORTLAND | ME | DIAGNOSTIC RADIOLOGY | 281 | 2,305 | $64,682 | $28 | premium | 47.1% | (207) 828-2160 |
| 63 | THE EMORY CLINIC INC | ATLANTA | GA | NURSE PRACTITIONER | 3484 | 2,287 | $77,914 | $34 | premium | 4.3% | (404) 778-7525 |
| 64 | ASSOCIATION OF UNIVERSITY RADIOLOGISTS, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 35 | 2,222 | $73,371 | $33 | premium | 4.1% | (865) 305-9661 |
| 65 | SPRINGFIELD CLINIC, LLP | SPRINGFIELD | IL | NURSE PRACTITIONER | 686 | 2,199 | $185,412 | $84 | premium | 2.5% | (217) 544-6464 |
| 66 | STEPHEN W BROWN AND RADIOLOGY ASSOCIATES OF AUGUSTA LLP | AUGUSTA | GA | DIAGNOSTIC RADIOLOGY | 19 | 2,192 | $94,181 | $43 | premium | 4.1% | (706) 774-5035 |
| 67 | UNIVERSITY OF CINCINNATI PHYSICIANS COMPANY LLC | CINCINNATI | OH | NURSE PRACTITIONER | 1504 | 2,179 | $56,654 | $26 | premium | 2.6% | (513) 584-1000 |
| 68 | STONY BROOK RADIOLOGY, UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | DIAGNOSTIC RADIOLOGY | 59 | 2,160 | $138,330 | $64 | premium | 2.0% | (631) 638-2121 |
| 69 | UNIVERSITY OF MIAMI | MIAMI | FL | NURSE PRACTITIONER | 2331 | 2,159 | $78,144 | $36 | premium | 1.8% | (305) 689-5437 |
| 70 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 2,158 | $79,846 | $37 | premium | 5.5% | (617) 732-5500 |
| 71 | RADIOLOGY INC | HUNTINGTON | WV | DIAGNOSTIC RADIOLOGY | 28 | 2,149 | $83,051 | $39 | premium | 17.8% | (304) 526-1140 |
| 72 | UNIVERSITY OF LOUISVILLE PHYSICIANS INC | LOUISVILLE | KY | NURSE PRACTITIONER | 1442 | 2,113 | $48,751 | $23 | premium | 7.6% | (502) 629-2398 |
| 73 | VISTA RADIOLOGY, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 68 | 2,083 | $70,466 | $34 | premium | 3.8% | (865) 546-9484 |
| 74 | ADVANCED UROLOGY INSTITUTE LLC | INVERNESS | FL | UROLOGY | 147 | 2,083 | $134,435 | $65 | premium | 1.7% | (352) 726-9707 |
| 75 | REGENTS OF THE UNIV OF CA | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 1608 | 2,079 | $108,108 | $52 | premium | 1.2% | (877) 827-7463 |
| 76 | DRS HARRIS BIRKHILL WANG SONGE AND ASSOC PC | DEARBORN | MI | DIAGNOSTIC RADIOLOGY | 62 | 2,010 | $45,312 | $23 | premium | 3.9% | (313) 593-7301 |
| 77 | UC REGENTS | ORANGE | CA | DIAGNOSTIC RADIOLOGY | 99 | 1,992 | $79,381 | $40 | premium | 1.2% | (714) 456-7004 |
| 78 | TEXAS RADIOLOGY ASSOCIATES LLP | PLANO | TX | DIAGNOSTIC RADIOLOGY | 153 | 1,988 | $349,851 | $176 | premium | 1.4% | (469) 814-2000 |
| 79 | UNMC PHYSICIANS | OMAHA | NE | PHYSICIAN ASSISTANT | 1514 | 1,982 | $41,622 | $21 | premium | 13.3% | (402) 559-4000 |
| 80 | UMASS MEMORIAL MEDICAL GROUP INC | WORCESTER | MA | PHYSICIAN ASSISTANT | 2483 | 1,965 | $86,475 | $44 | premium | 5.0% | (508) 334-1000 |
| 81 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 1,952 | $51,862 | $27 | premium | 26.6% | (801) 261-8346 |
| 82 | AUC UROLOGISTS LLC | MYRTLE BEACH | SC | PHYSICIAN ASSISTANT | 28 | 1,936 | $159,176 | $82 | premium | 6.1% | (843) 347-2450 |
| 83 | LOYOLA UNIVERSITY MEDICAL CENTER | MAYWOOD | IL | NURSE PRACTITIONER | 933 | 1,918 | $74,344 | $39 | premium | 2.2% | (708) 216-8372 |
| 84 | INTELLIRAD IMAGING LLC | MIAMI | FL | DIAGNOSTIC RADIOLOGY | 61 | 1,893 | $61,448 | $32 | premium | 1.5% | (305) 854-4400 |
| 85 | RADIOLOGY CONSULTANTS PC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 46 | 1,853 | $51,884 | $28 | premium | 12.4% | (402) 717-4760 |
| 86 | FACULTY PHYSICIANS AND SURGEONS OF LLUSM | LOMA LINDA | CA | DIAGNOSTIC RADIOLOGY | 1317 | 1,804 | $55,434 | $31 | premium | 1.0% | — |
| 87 | RADIOLOGY LTD LLC | TUCSON | AZ | DIAGNOSTIC RADIOLOGY | 102 | 1,796 | $191,789 | $107 | premium | 5.3% | (520) 290-4842 |
| 88 | MONTEFIORE MEDICAL CENTER | BRONX | NY | PHYSICAL THERAPIST IN PRIVATE PRACTICE | 2796 | 1,772 | $128,041 | $72 | premium | 1.6% | (866) 633-8255 |
| 89 | ROPER RADIOLOGISTS PA | CHARLESTON | SC | DIAGNOSTIC RADIOLOGY | 40 | 1,765 | $323,910 | $184 | premium | 5.6% | (843) 724-2161 |
| 90 | X-RAY ASSOCIATES OF LOUISVILLE PSC | LOUISVILLE | KY | DIAGNOSTIC RADIOLOGY | 55 | 1,714 | $87,329 | $51 | premium | 6.1% | (502) 897-8121 |
| 91 | DARTMOUTH-HITCHCOCK CLINIC | LEBANON | NH | PHYSICIAN ASSISTANT | 1441 | 1,701 | $253,625 | $149 | premium | 21.6% | (603) 650-5000 |
| 92 | UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL | CHAPEL HILL | NC | NURSE PRACTITIONER | 2120 | 1,699 | $51,138 | $30 | premium | 2.2% | (984) 215-5556 |
| 93 | PENINSULA RADIOLOGICAL ASSOCIATES LIMITED | NEWPORT NEWS | VA | DIAGNOSTIC RADIOLOGY | 65 | 1,689 | $48,981 | $29 | premium | 3.1% | (757) 594-3900 |
| 94 | MCV ASSOCIATED PHYSICIANS | RICHMOND | VA | NURSE PRACTITIONER | 1791 | 1,662 | $71,985 | $43 | premium | 3.0% | (804) 828-9000 |
| 95 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 1,661 | $74,959 | $45 | premium | 4.9% | (973) 971-6866 |
| 96 | LAHEY CLINIC INC | BURLINGTON | MA | NURSE PRACTITIONER | 1400 | 1,661 | $65,523 | $39 | premium | 4.2% | — |
| 97 | KANSAS UNIVERSITY PHYSICIANS INC | KANSAS CITY | KS | NURSE PRACTITIONER | 1815 | 1,659 | $109,943 | $66 | premium | 9.3% | (913) 588-1227 |
| 98 | RED RIVER CONSULTANTS INC | SHREVEPORT | LA | DIAGNOSTIC RADIOLOGY | 60 | 1,649 | $52,768 | $32 | premium | 5.5% | (318) 212-4550 |
| 99 | MORAN ROWEN AND DORSEY INC | ORANGE | CA | DIAGNOSTIC RADIOLOGY | 35 | 1,647 | $59,508 | $36 | premium | 1.0% | (714) 628-3305 |
| 100 | TRIAD RADIOLOGY ASSOCIATES PLLC | WINSTON SALEM | NC | DIAGNOSTIC RADIOLOGY | 78 | 1,628 | $43,962 | $27 | premium | 2.1% | (336) 718-7800 |
Showing the top 100 of 1,306 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 →