0042T — Computed tomography (ct) of brain blood flow, volume, and timing of flow analysis with contrast
11,288 observed fee-for-service (50%) · ~11,291 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 | 0042T svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 799 | $556,903 | $697 | premium | 23.7% | — |
| 2 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 625 | $251,948 | $403 | premium | 12.2% | (817) 321-0470 |
| 3 | NEURO IR OF EAST TEXAS | TYLER | TX | DIAGNOSTIC RADIOLOGY | 3 | 512 | $563,200 | $1,100 | premium | 10.0% | (903) 705-0072 |
| 4 | MORI BEAN AND BROOKS INC | ORANGE PARK | FL | DIAGNOSTIC RADIOLOGY | 947 | 458 | $281,405 | $614 | premium | 5.7% | (904) 399-5550 |
| 5 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 402 | $706,654 | $1,758 | premium | 5.0% | (904) 953-2000 |
| 6 | LAKELAND RADIOLOGISTS P A | FLOWOOD | MS | DIAGNOSTIC RADIOLOGY | 29 | 364 | $114,660 | $315 | premium | 39.9% | (601) 936-2390 |
| 7 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 356 | $213,600 | $600 | premium | 11.7% | (973) 971-6866 |
| 8 | RADIOLOGY ASSOCIATES LLC | BATON ROUGE | LA | DIAGNOSTIC RADIOLOGY | 79 | 297 | $89,100 | $300 | premium | 36.7% | (225) 757-0552 |
| 9 | STATE UNIVERSITY OF IOWA | IOWA CITY | IA | PHYSICIAN ASSISTANT | 1902 | 262 | $119,783 | $457 | premium | 96.0% | (319) 678-8201 |
| 10 | RADIOLOGY ASSOCIATES OF RIDGEWOOD P A | WALDWICK | NJ | DIAGNOSTIC RADIOLOGY | 20 | 255 | $271,575 | $1,065 | premium | 8.4% | (201) 445-8822 |
| 11 | NORTH BROWARD RADIOLOGISTS, P.A. | FORT LAUDERDALE | FL | DIAGNOSTIC RADIOLOGY | 23 | 246 | $129,150 | $525 | premium | 3.0% | (954) 262-1140 |
| 12 | VISTA RADIOLOGY, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 68 | 237 | $66,834 | $282 | premium | 36.7% | (865) 546-9484 |
| 13 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 189 | $210,534 | $1,114 | premium | 12.6% | (888) 972-9700 |
| 14 | LSU HEALTH SCIENCES CENTER SHREVEPORT FACULTY GROUP PRACTICE | SHREVEPORT | LA | PHYSICIAN ASSISTANT | 589 | 185 | $65,120 | $352 | premium | 22.9% | (318) 675-8700 |
| 15 | UNIVERSITY OF ARKANSAS FOR MEDICAL SCIENCES | LITTLE ROCK | AR | NURSE PRACTITIONER | 1241 | 158 | $120,548 | $763 | premium | 47.7% | (501) 686-8000 |
| 16 | SOUTH FLORIDA MEDICAL IMAGING PA | FORT LAUDERDALE | FL | DIAGNOSTIC RADIOLOGY | 44 | 145 | $26,791 | $185 | premium | 1.8% | (954) 267-6650 |
| 17 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 133 | $29,925 | $225 | premium | 9.2% | (804) 288-8327 |
| 18 | TOWER HEALTH MEDICAL GROUP | WEST READING | PA | INTERNAL MEDICINE | 590 | 132 | $91,476 | $693 | premium | 3.9% | (484) 628-5455 |
| 19 | RADIOLOGY ASSOCIATES OF RICHMOND INC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 70 | 129 | $77,400 | $600 | premium | 8.9% | (804) 272-8806 |
| 20 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 119 | $168,147 | $1,413 | premium | 10.4% | (916) 681-8852 |
| 21 | WASHINGTON REGIONAL MEDICAL SYSTEM | FAYETTEVILLE | AR | NURSE PRACTITIONER | 241 | 115 | $90,965 | $791 | premium | 34.7% | (479) 571-4338 |
| 22 | UT PHYSICIANS | HOUSTON | TX | NURSE PRACTITIONER | 1758 | 115 | $226,665 | $1,971 | premium | 2.3% | (713) 566-5000 |
| 23 | TEXAS RADIOLOGY ASSOCIATES LLP | PLANO | TX | DIAGNOSTIC RADIOLOGY | 153 | 114 | $58,026 | $509 | premium | 2.2% | (469) 814-2000 |
| 24 | CAPITAL HEALTH MULTISPECIALTY GROUP | PENNINGTON | NJ | INTERNAL MEDICINE | 338 | 111 | $114,885 | $1,035 | premium | 3.7% | (609) 303-4000 |
| 25 | RWJBH OBSERVATION ASSOCIATES LLC | SOMERVILLE | NJ | PHYSICIAN ASSISTANT | 937 | 107 | $170,023 | $1,589 | premium | 3.5% | (908) 685-2200 |
| 26 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 103 | $91,670 | $890 | premium | 24.3% | (616) 363-7272 |
| 27 | MODESTO RADIOLOGICAL MEDICAL GROUP INC | TURLOCK | MD | DIAGNOSTIC RADIOLOGY | 101 | 94 | $47,846 | $509 | premium | 6.3% | (209) 669-0600 |
| 28 | TEMPLE FACULTY PRACTICE PLAN INC | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 1330 | 93 | $269,700 | $2,900 | premium | 2.8% | — |
| 29 | BLACKWELL PHYSICIANS, LLC | ROCKVILLE | MD | DIAGNOSTIC RADIOLOGY | 67 | 89 | $49,395 | $555 | premium | 5.9% | (240) 826-6074 |
| 30 | MORI BEAN AND BROOKS INC | ORANGE PARK | DE | DIAGNOSTIC RADIOLOGY | 947 | 86 | $45,494 | $529 | premium | 19.1% | (904) 399-5550 |
| 31 | ASSOCIATION OF UNIVERSITY RADIOLOGISTS, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 35 | 85 | $67,830 | $798 | premium | 13.2% | (865) 305-9661 |
| 32 | OKLAHOMA RADIOLOGY GROUP P C | OKLAHOMA CITY | OK | DIAGNOSTIC RADIOLOGY | 61 | 84 | $63,000 | $750 | premium | 39.3% | (405) 272-7000 |
| 33 | UNIVERSITY OF PENN - MEDICAL GROUP | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 3505 | 81 | $109,512 | $1,352 | premium | 2.4% | (215) 662-2777 |
| 34 | INTELLIRAD IMAGING LLC | MIAMI | FL | DIAGNOSTIC RADIOLOGY | 61 | 78 | $44,865 | $575 | premium | 1.0% | (305) 854-4400 |
| 35 | COLORADO IMAGING ASSOCIATES PC | LAKEWOOD | CO | DIAGNOSTIC RADIOLOGY | 62 | 78 | $76,128 | $976 | premium | 4.7% | (303) 433-9729 |
| 36 | RADIOLOGY ASSOCIATES LLC | OKLAHOMA CITY | OK | DIAGNOSTIC RADIOLOGY | 19 | 76 | $23,940 | $315 | premium | 35.5% | (405) 949-3011 |
| 37 | LOURDES IMAGING ASSOCIATES PA | CAMDEN | IL | DIAGNOSTIC RADIOLOGY | 15 | 76 | $312,436 | $4,111 | premium | 18.4% | (856) 616-8100 |
| 38 | LOURDES IMAGING ASSOCIATES PA | CAMDEN | PA | DIAGNOSTIC RADIOLOGY | 15 | 71 | $291,881 | $4,111 | premium | 2.1% | (856) 616-8100 |
| 39 | NASSAU HEALTH CARE CORPORATION | EAST MEADOW | NY | INTERNAL MEDICINE | 180 | 70 | $24,520 | $350 | premium | 5.7% | (516) 486-6862 |
| 40 | FLORIDA RADIOLOGY CONSULTANTS P A | FORT MYERS | VA | DIAGNOSTIC RADIOLOGY | 67 | 64 | $46,848 | $732 | premium | 4.4% | (239) 938-3571 |
| 41 | STONY BROOK RADIOLOGY, UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | DIAGNOSTIC RADIOLOGY | 59 | 63 | $55,875 | $887 | premium | 5.1% | (631) 638-2121 |
| 42 | WELLSTAR MEDICAL GROUP LLC | MARIETTA | GA | NURSE PRACTITIONER | 3060 | 62 | $40,686 | $656 | premium | 7.0% | (770) 422-2004 |
| 43 | ENGLEWOOD RADIOLOGIC GROUP P A | ENGLEWOOD | NJ | DIAGNOSTIC RADIOLOGY | 125 | 58 | $29,000 | $500 | premium | 1.9% | (201) 894-3480 |
| 44 | UNM MEDICAL GROUP INC | ALBUQUERQUE | NM | FAMILY PRACTICE | 1089 | 58 | $67,048 | $1,156 | premium | 42.3% | (505) 272-2111 |
| 45 | BLACKWELL PHYSICIANS, LLC | ROCKVILLE | NC | DIAGNOSTIC RADIOLOGY | 67 | 58 | $32,190 | $555 | premium | 7.5% | (240) 826-6074 |
| 46 | IMAGING SUBSPECIALISTS OF NORTH JERSEY LLC | PATERSON | NJ | DIAGNOSTIC RADIOLOGY | 30 | 57 | $9,861 | $173 | premium | 1.9% | (973) 569-2621 |
| 47 | THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS | CHICAGO | MD | NURSE PRACTITIONER | 1170 | 56 | $72,128 | $1,288 | premium | 3.7% | — |
| 48 | MEDSTAR MEDICAL GROUP II LLC | WASHINGTON | DC | PHYSICIAN ASSISTANT | 3707 | 55 | $71,115 | $1,293 | premium | 7.1% | (202) 429-2401 |
| 49 | JUPITER MEDICAL CENTER PHYSICIANS GROUP INC | JUPITER | CT | PHYSICIAN ASSISTANT | 147 | 53 | $28,037 | $529 | premium | 21.6% | (561) 747-2234 |
| 50 | WEST VIRGINIA UNIVERSITY MEDICAL CORPORATION | MORGANTOWN | WV | PHYSICIAN ASSISTANT | 1996 | 53 | $51,834 | $978 | premium | 63.9% | (304) 598-4865 |
| 51 | SUMMIT RADIOLOGY SERVICES P C | STOCKBRIDGE | GA | DIAGNOSTIC RADIOLOGY | 67 | 50 | $43,672 | $873 | premium | 5.6% | (678) 604-1000 |
| 52 | RADIOLOGY AND IMAGING SPECIALISTS OF LAKELAND | LAKELAND | FL | DIAGNOSTIC RADIOLOGY | 71 | 50 | $16,050 | $321 | premium | 0.6% | (863) 687-1100 |
| 53 | REGIONAL HEALTH SERVICES INC | ERIE | PA | PHYSICIAN ASSISTANT | 588 | 46 | $18,400 | $400 | premium | 1.4% | — |
| 54 | FLORIDA RADIOLOGY CONSULTANTS P A | FORT MYERS | GA | DIAGNOSTIC RADIOLOGY | 67 | 45 | $32,737 | $727 | premium | 5.1% | (239) 938-3571 |
| 55 | CHRISTIANA CARE HEALTH SERVICES INC | NEWARK | DE | PHYSICIAN ASSISTANT | 1537 | 43 | $5,841 | $136 | premium | 9.6% | — |
| 56 | NORTH BROWARD RADIOLOGISTS, P.A. | FORT LAUDERDALE | GA | DIAGNOSTIC RADIOLOGY | 23 | 43 | $22,575 | $525 | premium | 4.8% | (954) 262-1140 |
| 57 | FLORIDA HOSPITAL PHYSICIAN GROUP INC | TAMPA | FL | DIAGNOSTIC RADIOLOGY | 891 | 43 | $22,747 | $529 | premium | 0.5% | (813) 615-7075 |
| 58 | ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND | NEW ORLEANS | LA | INTERNAL MEDICINE | 412 | 43 | $8,390 | $195 | premium | 5.3% | — |
| 59 | ALLEGHENY CLINIC RADIOLOGY | PITTSBURGH | PA | DIAGNOSTIC RADIOLOGY | 153 | 42 | $10,816 | $258 | premium | 1.2% | (412) 734-6015 |
| 60 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | NY | NURSE PRACTITIONER | 1587 | 42 | $76,482 | $1,821 | premium | 3.4% | (904) 953-2000 |
| 61 | SINGLETON ASSOCIATES PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 769 | 40 | $30,880 | $772 | premium | 0.8% | (855) 504-4544 |
| 62 | MCV ASSOCIATED PHYSICIANS | RICHMOND | VA | NURSE PRACTITIONER | 1791 | 39 | $37,764 | $968 | premium | 2.7% | (804) 828-9000 |
| 63 | WEST COUNTY RADIOLOGICAL GROUP INC | SAINT LOUIS | MO | DIAGNOSTIC RADIOLOGY | 104 | 38 | $25,612 | $674 | premium | 12.2% | (314) 941-5600 |
| 64 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | NY | DIAGNOSTIC RADIOLOGY | 340 | 38 | $20,102 | $529 | premium | 3.1% | (817) 321-0470 |
| 65 | RADIOLOGY OF HUNSTVILLE PC | HUNTSVILLE | AL | DIAGNOSTIC RADIOLOGY | 63 | 37 | $555 | $15 | premium | 12.2% | 2565390457145 |
| 66 | LIFEBRIDGE COMMUNITY PHYSICIANS INC | BALTIMORE | MD | NURSE PRACTITIONER | 185 | 36 | $38,052 | $1,057 | premium | 2.4% | (410) 601-9000 |
| 67 | FLORIDA HOSPITAL MEDICAL GROUP INC | ORLANDO | FL | DIAGNOSTIC RADIOLOGY | 321 | 36 | $24,012 | $667 | premium | 0.4% | (407) 303-5600 |
| 68 | PHYSICIANS REFERRAL SERVICE | HOUSTON | TX | NURSE PRACTITIONER | 2696 | 35 | $50,684 | $1,448 | premium | 0.7% | (713) 592-5433 |
| 69 | MORI BEAN AND BROOKS INC | ORANGE PARK | NJ | DIAGNOSTIC RADIOLOGY | 947 | 33 | $17,457 | $529 | premium | 1.1% | (904) 399-5550 |
| 70 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 33 | $16,236 | $492 | premium | 2.7% | — |
| 71 | MORI BEAN AND BROOKS INC | ORANGE PARK | NC | DIAGNOSTIC RADIOLOGY | 947 | 32 | $16,928 | $529 | premium | 4.1% | (904) 399-5550 |
| 72 | NORTHERN VIRGINIA RADIOLOGY CONSULTANTS, PLLC | ARLINGTON | NY | DIAGNOSTIC RADIOLOGY | 28 | 32 | $9,600 | $300 | premium | 2.6% | (517) 481-2442 |
| 73 | MODESTO RADIOLOGICAL MEDICAL GROUP INC | TURLOCK | HI | DIAGNOSTIC RADIOLOGY | 101 | 32 | $16,288 | $509 | premium | 32.3% | (209) 669-0600 |
| 74 | NORTH BROWARD RADIOLOGISTS, P.A. | FORT LAUDERDALE | IL | DIAGNOSTIC RADIOLOGY | 23 | 30 | $15,750 | $525 | premium | 7.2% | (954) 262-1140 |
| 75 | RADIOLOGY OF MSMC, LLC | MIAMI | FL | DIAGNOSTIC RADIOLOGY | 23 | 30 | $23,160 | $772 | premium | 0.4% | (305) 674-3905 |
| 76 | RADIOLOGY ASSOCIATES OF CLEARWATER | CLEARWATER | FL | DIAGNOSTIC RADIOLOGY | 53 | 30 | $15,000 | $500 | premium | 0.4% | (727) 441-3711 |
| 77 | RADIOLOGY INC | HUNTINGTON | WV | DIAGNOSTIC RADIOLOGY | 28 | 30 | $7,890 | $263 | premium | 36.1% | (304) 526-1140 |
| 78 | NORTHERN VIRGINIA RADIOLOGY CONSULTANTS, PLLC | ARLINGTON | CT | DIAGNOSTIC RADIOLOGY | 28 | 29 | $8,700 | $300 | premium | 11.8% | (517) 481-2442 |
| 79 | RADIOLOGY CONSULTANTS PC | OKLAHOMA CITY | MS | DIAGNOSTIC RADIOLOGY | 23 | 29 | $7,250 | $250 | premium | 3.2% | (405) 384-5250 |
| 80 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 28 | $32,564 | $1,163 | premium | 0.5% | (254) 724-2663 |
| 81 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | CA | DIAGNOSTIC RADIOLOGY | 97 | 28 | $16,800 | $600 | premium | 2.4% | (973) 971-6866 |
| 82 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 28 | $5,796 | $207 | premium | 6.8% | — |
| 83 | CAPITAL HEALTH MULTISPECIALTY GROUP | PENNINGTON | CT | INTERNAL MEDICINE | 338 | 28 | $28,980 | $1,035 | premium | 11.4% | (609) 303-4000 |
| 84 | RADIOLOGY LTD LLC | TUCSON | AZ | DIAGNOSTIC RADIOLOGY | 102 | 27 | $20,637 | $764 | premium | 6.2% | (520) 290-4842 |
| 85 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | DC | DIAGNOSTIC RADIOLOGY | 97 | 27 | $16,200 | $600 | premium | 3.5% | (973) 971-6866 |
| 86 | MEDSTAR MEDICAL GROUP II LLC | WASHINGTON | AR | PHYSICIAN ASSISTANT | 3707 | 27 | $35,106 | $1,300 | premium | 8.2% | (202) 429-2401 |
| 87 | NORTHERN VIRGINIA RADIOLOGY CONSULTANTS, PLLC | ARLINGTON | PA | DIAGNOSTIC RADIOLOGY | 28 | 26 | $7,800 | $300 | premium | 0.8% | (517) 481-2442 |
| 88 | SOUTHFIELD RADIOLOGY ASSOCIATES, PLLC | NOVI | MI | DIAGNOSTIC RADIOLOGY | 39 | 26 | $2,210 | $85 | premium | 6.1% | (248) 553-2200 |
| 89 | UPMC ALTOONA REGIONAL HEALTH SERVICES, INC. | ALTOONA | PA | PHYSICIAN ASSISTANT | 190 | 26 | $16,900 | $650 | premium | 0.8% | (814) 941-8811 |
| 90 | SINAI HOSPITAL OF BALTIMORE, INC | BALTIMORE | MD | PHYSICIAN ASSISTANT | 386 | 26 | $27,482 | $1,057 | premium | 1.7% | — |
| 91 | CHESAPEAKE REGIONAL MEDICAL GROUP | CHESAPEAKE | VA | NURSE PRACTITIONER | 140 | 25 | $8,575 | $343 | premium | 1.7% | (757) 312-6460 |
| 92 | COASTAL IMAGING LLC | MANAHAWKIN | NJ | DIAGNOSTIC RADIOLOGY | 63 | 25 | $25,000 | $1,000 | premium | 0.8% | (609) 597-6011 |
| 93 | TOWER HEALTH MEDICAL GROUP | WEST READING | VA | INTERNAL MEDICINE | 590 | 25 | $17,325 | $693 | premium | 1.7% | (484) 628-5455 |
| 94 | DRS. MCCLOW, CLARK AND BERK PA | JACKSONVILLE | FL | DIAGNOSTIC RADIOLOGY | 22 | 24 | $10,800 | $450 | premium | 0.3% | (904) 381-9994 |
| 95 | RED RIVER CONSULTANTS INC | SHREVEPORT | LA | DIAGNOSTIC RADIOLOGY | 60 | 24 | $7,488 | $312 | premium | 3.0% | (318) 212-4550 |
| 96 | FLORIDA HOSPITAL MEDICAL GROUP INC | ORLANDO | TX | DIAGNOSTIC RADIOLOGY | 321 | 24 | $16,113 | $671 | premium | 0.5% | (407) 303-5600 |
| 97 | NORTH BROWARD RADIOLOGISTS, P.A. | FORT LAUDERDALE | TN | DIAGNOSTIC RADIOLOGY | 23 | 23 | $12,075 | $525 | premium | 3.6% | (954) 262-1140 |
| 98 | VISTA RADIOLOGY, PC | KNOXVILLE | TX | DIAGNOSTIC RADIOLOGY | 68 | 23 | $6,486 | $282 | premium | 0.5% | (865) 546-9484 |
| 99 | FAIRFAX RADIOLOGICAL CONSULTANTS | ALEXANDRIA | VA | DIAGNOSTIC RADIOLOGY | 150 | 23 | $7,268 | $316 | premium | 1.6% | (703) 698-4444 |
| 100 | UNMC PHYSICIANS | OMAHA | TN | PHYSICIAN ASSISTANT | 1514 | 23 | $6,417 | $279 | premium | 3.6% | (402) 559-4000 |
Showing the top 100 of 135 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 →