3,644 observed fee-for-service (50%) · ~3,673 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 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 | 78708 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 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 104 | $32,448 | $312 | premium | 23.1% | — |
| 2 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 100 | $47,300 | $473 | premium | 37.0% | (888) 972-9700 |
| 3 | FLORIDA HOSPITAL MEDICAL GROUP INC | ORLANDO | FL | DIAGNOSTIC RADIOLOGY | 321 | 90 | $15,120 | $168 | premium | 8.6% | (407) 303-5600 |
| 4 | UT PHYSICIANS | HOUSTON | TX | NURSE PRACTITIONER | 1758 | 86 | $28,662 | $333 | premium | 17.6% | (713) 566-5000 |
| 5 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 81 | $46,179 | $570 | premium | 18.6% | (212) 263-9700 |
| 6 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 77 | $18,533 | $241 | premium | 28.5% | (617) 724-0287 |
| 7 | RADIOLOGY PHYSICIANS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 61 | 75 | $17,175 | $229 | premium | 22.9% | (937) 208-8000 |
| 8 | UNIVERSITY PHYSICIANS INCORPORATED | AURORA | CO | PHYSICIAN ASSISTANT | 3122 | 74 | $17,464 | $236 | premium | 28.8% | (720) 777-1234 |
| 9 | UC REGENTS | ORANGE | CA | DIAGNOSTIC RADIOLOGY | 99 | 69 | $17,940 | $260 | premium | 8.4% | (714) 456-7004 |
| 10 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 66 | $18,744 | $284 | premium | 24.3% | (919) 684-8111 |
| 11 | CITY OF HOPE MEDICAL FOUNDATION | DUARTE | CA | NURSE PRACTITIONER | 942 | 65 | $13,455 | $207 | premium | 7.9% | (626) 256-4673 |
| 12 | SPRINGFIELD CLINIC, LLP | SPRINGFIELD | IL | NURSE PRACTITIONER | 686 | 65 | $47,489 | $731 | premium | 14.4% | (217) 544-6464 |
| 13 | SDMI, LLC | LAS VEGAS | NV | DIAGNOSTIC RADIOLOGY | 36 | 64 | $38,720 | $605 | premium | 100.0% | (702) 732-6000 |
| 14 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 63 | $11,592 | $184 | premium | 23.2% | (252) 752-5000 |
| 15 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 62 | $9,610 | $155 | premium | 27.3% | (804) 288-8327 |
| 16 | FLORIDA CLINICAL PRACTICE ASSOCIATION INC | GAINESVILLE | FL | NURSE PRACTITIONER | 1912 | 59 | $18,725 | $317 | premium | 5.6% | (352) 265-8990 |
| 17 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 56 | $51,366 | $917 | premium | 27.7% | (800) 603-0558 |
| 18 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 54 | $29,260 | $542 | premium | 12.4% | (631) 225-7200 |
| 19 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 51 | $15,090 | $296 | premium | 11.7% | — |
| 20 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 49 | $25,935 | $529 | premium | 4.7% | (239) 936-2316 |
| 21 | BAY IMAGING CONSULTANTS MEDICAL GROUP INC | WALNUT CREEK | OH | DIAGNOSTIC RADIOLOGY | 134 | 49 | $36,995 | $755 | premium | 14.9% | (925) 947-5320 |
| 22 | COLUMBUS RADIOLOGY CORP | COLUMBUS | PA | DIAGNOSTIC RADIOLOGY | 288 | 49 | $36,995 | $755 | premium | 12.2% | (614) 228-7231 |
| 23 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 48 | $45,696 | $952 | premium | 5.8% | (916) 681-8852 |
| 24 | KANSAS UNIVERSITY PHYSICIANS INC | KANSAS CITY | KS | NURSE PRACTITIONER | 1815 | 47 | $6,496 | $138 | premium | 79.7% | (913) 588-1227 |
| 25 | ARKANSAS HEALTH GROUP | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 666 | 47 | $10,016 | $213 | premium | 48.0% | (501) 202-2093 |
| 26 | RHODE ISLAND MEDICAL IMAGING INC | EAST PROVIDENCE | RI | DIAGNOSTIC RADIOLOGY | 109 | 45 | $10,350 | $230 | premium | 100.0% | (401) 626-3900 |
| 27 | RADIOLOGY AND MEDICAL IMAGERY OF NEWNAN PC | NEWNAN | GA | DIAGNOSTIC RADIOLOGY | 35 | 43 | $32,465 | $755 | premium | 35.0% | (770) 400-1000 |
| 28 | OKLAHOMA RADIOLOGY GROUP P C | OKLAHOMA CITY | OK | DIAGNOSTIC RADIOLOGY | 61 | 41 | $8,610 | $210 | premium | 42.3% | (405) 272-7000 |
| 29 | UMASS MEMORIAL MEDICAL GROUP INC | WORCESTER | MA | PHYSICIAN ASSISTANT | 2483 | 41 | $11,234 | $274 | premium | 15.2% | (508) 334-1000 |
| 30 | LAKE MEDICAL IMAGING AND BREAST CENTER AT THE VILLAGES LLC | LEESBURG | FL | DIAGNOSTIC RADIOLOGY | 22 | 40 | $20,360 | $509 | premium | 3.8% | (352) 787-5858 |
| 31 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 38 | $6,840 | $180 | premium | 16.7% | (757) 466-6870 |
| 32 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 103 | 37 | $12,637 | $342 | premium | 7.6% | (281) 206-9020 |
| 33 | STATE UNIVERSITY OF IOWA | IOWA CITY | IA | PHYSICIAN ASSISTANT | 1902 | 37 | $11,257 | $304 | premium | 39.8% | (319) 678-8201 |
| 34 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 243 | 36 | $10,656 | $296 | premium | 11.0% | (614) 566-5600 |
| 35 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 62 | 32 | $15,136 | $473 | premium | 11.9% | (888) 601-0943 |
| 36 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 32 | $7,488 | $234 | premium | 22.1% | (616) 363-7272 |
| 37 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 32 | $7,824 | $244 | premium | 11.9% | (617) 732-5500 |
| 38 | ENLOE MEDICAL CENTER | CHICO | CA | DIAGNOSTIC RADIOLOGY | 362 | 30 | $3,720 | $124 | premium | 3.6% | (530) 332-4470 |
| 39 | CENTRAL ILLINOIS RADIOLOGICAL ASSOCIATES LTD | PEORIA | IL | DIAGNOSTIC RADIOLOGY | 196 | 30 | $8,970 | $299 | premium | 6.7% | (309) 655-2000 |
| 40 | OU HEALTH PARTNERS INC | OKLAHOMA CITY | OK | PHYSICIAN ASSISTANT | 1160 | 30 | $7,098 | $237 | premium | 30.9% | (405) 271-4311 |
| 41 | OSU RADIOLOGY LLC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 174 | 29 | $6,090 | $210 | premium | 8.8% | (614) 293-8315 |
| 42 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 28 | $12,012 | $429 | premium | 18.7% | (314) 747-3000 |
| 43 | RADIOLOGY ASSOCIATES LLC | BATON ROUGE | LA | DIAGNOSTIC RADIOLOGY | 79 | 28 | $7,556 | $270 | premium | 31.8% | (225) 757-0552 |
| 44 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 28 | $7,516 | $268 | premium | 3.4% | (916) 983-7476 |
| 45 | GRAND TRAVERSE RADIOLOGISTS PC | TRAVERSE CITY | MI | DIAGNOSTIC RADIOLOGY | 32 | 28 | $4,984 | $178 | premium | 19.3% | (231) 935-5000 |
| 46 | PROGRESSIVE PHYSICIAN ASSOC INC | PHILLIPSBURG | PA | DIAGNOSTIC RADIOLOGY | 160 | 28 | $6,216 | $222 | premium | 7.0% | (908) 859-6700 |
| 47 | RADIOLOGY IMAGING ASSOCIATES PC | ENGLEWOOD | CO | DIAGNOSTIC RADIOLOGY | 148 | 27 | $6,615 | $245 | premium | 10.5% | (303) 761-9190 |
| 48 | RADIOLOGY ASSOCIATES OF WYOMING VALLEY INC | WILKES BARRE | PA | DIAGNOSTIC RADIOLOGY | 11 | 27 | $4,941 | $183 | premium | 6.8% | (877) 235-7686 |
| 49 | SANFORD CLINIC | SIOUX FALLS | SD | DIAGNOSTIC RADIOLOGY | 276 | 26 | $5,954 | $229 | premium | 53.1% | (605) 328-8700 |
| 50 | PHYSICIANS OF CAPE COD HOSPITAL | HYANNIS | MA | NURSE PRACTITIONER | 318 | 25 | $3,884 | $155 | premium | 9.3% | (774) 552-6000 |
| 51 | KETTERING NETWORK RADIOLOGISTS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 74 | 25 | $5,925 | $237 | premium | 7.6% | (937) 558-3800 |
| 52 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | FL | NURSE PRACTITIONER | 4339 | 25 | $7,934 | $317 | premium | 2.4% | — |
| 53 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 24 | $4,128 | $172 | premium | 24.0% | (812) 422-3254 |
| 54 | REGIONAL RADIOLOGY, LLC | COVINGTON | LA | DIAGNOSTIC RADIOLOGY | 40 | 24 | $1,652 | $69 | premium | 27.3% | (985) 898-4000 |
| 55 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 23 | $6,963 | $303 | premium | 2.8% | (858) 455-9100 |
| 56 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 244 | 23 | $10,879 | $473 | premium | 5.3% | (212) 772-3111 |
| 57 | MORI BEAN AND BROOKS INC | ORANGE PARK | PA | DIAGNOSTIC RADIOLOGY | 947 | 22 | $16,610 | $755 | premium | 5.5% | (904) 399-5550 |
| 58 | COLUMBUS RADIOLOGY CORP | COLUMBUS | TX | DIAGNOSTIC RADIOLOGY | 288 | 22 | $16,610 | $755 | premium | 4.5% | (614) 228-7231 |
| 59 | METHODIST ASSOCIATES IN HEALTHCARE, INC | PHILADELPHIA | PA | DIAGNOSTIC RADIOLOGY | 398 | 22 | $5,798 | $264 | premium | 5.5% | (215) 955-6161 |
| 60 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | MI | NURSE PRACTITIONER | 4339 | 22 | $6,864 | $312 | premium | 15.2% | — |
| 61 | SONORAN RADIOLOGY LTD | MESA | AZ | DIAGNOSTIC RADIOLOGY | 474 | 22 | $16,610 | $755 | premium | 10.9% | (832) 915-2534 |
| 62 | LAHEY CLINIC INC | BURLINGTON | NY | NURSE PRACTITIONER | 1400 | 22 | $5,758 | $262 | premium | 5.1% | — |
| 63 | RADIOLOGY ASSOCIATES OF ABILENE PA | ABILENE | TX | DIAGNOSTIC RADIOLOGY | 25 | 22 | $4,620 | $210 | premium | 4.5% | (325) 670-2000 |
| 64 | KETTERING NETWORK RADIOLOGISTS INC | DAYTON | PA | DIAGNOSTIC RADIOLOGY | 74 | 21 | $4,977 | $237 | premium | 5.2% | (937) 558-3800 |
| 65 | THE ASSOCIATION OF UNIVERSITY PHYSICIANS | SEATTLE | WA | PHYSICIAN ASSISTANT | 3612 | 21 | $3,572 | $170 | premium | 28.0% | (206) 364-0500 |
| 66 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 20 | $17,100 | $855 | premium | 4.6% | (914) 241-1050 |
| 67 | LIMA RADIOLOGICAL ASSOCIATES | LIMA | OH | DIAGNOSTIC RADIOLOGY | 47 | 20 | $4,740 | $237 | premium | 6.1% | (419) 226-9023 |
| 68 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 20 | $5,140 | $257 | premium | 4.1% | (254) 724-2663 |
| 69 | ADVOCATE HEALTH AND HOSPITALS CORPORATION | BUFFALO GROVE | IL | NURSE PRACTITIONER | 3045 | 20 | $11,820 | $591 | premium | 4.4% | (847) 459-1160 |
| 70 | TENNESSEE INTERVENTIONAL AND IMAGING ASSOCIATES PLLC | CHATTANOOGA | TN | DIAGNOSTIC RADIOLOGY | 32 | 20 | $3,114 | $156 | premium | 21.3% | (423) 778-7234 |
| 71 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 20 | $3,957 | $198 | premium | 58.8% | (801) 261-8346 |
| 72 | RWJBH OBSERVATION ASSOCIATES LLC | SOMERVILLE | NJ | PHYSICIAN ASSISTANT | 937 | 19 | $9,424 | $496 | premium | 9.6% | (908) 685-2200 |
| 73 | RADIOLOGY IMAGING ASSOCIATES | PORT ST LUCIE | FL | DIAGNOSTIC RADIOLOGY | 11 | 19 | $8,987 | $473 | premium | 1.8% | (772) 905-3589 |
| 74 | CLEVELAND CLINIC HEALTH SERVICES PROFESSIONAL ASSOCIATION, INC | FRISCO | OR | DIAGNOSTIC RADIOLOGY | 60 | 19 | $7,526 | $396 | premium | 24.1% | (630) 235-2454 |
| 75 | DELAWARE RADIOLOGY ASSOCIATES PA | NEWARK | DE | DIAGNOSTIC RADIOLOGY | 56 | 19 | $8,987 | $473 | premium | 25.3% | (302) 737-5990 |
| 76 | MEDICAL SCANNING CONSULTANTS PA | ST LOUIS PARK | MN | DIAGNOSTIC RADIOLOGY | 81 | 18 | $17,814 | $990 | premium | 17.5% | (952) 541-1840 |
| 77 | RADIOLOGY ASSOCIATES OF VENICE AND ENGLEWOOD PA | VENICE | FL | DIAGNOSTIC RADIOLOGY | 8 | 18 | $6,105 | $339 | premium | 1.7% | (941) 486-3483 |
| 78 | WASHINGTON PHYSICIAN SERVICES | WASHINGTON | PA | PHYSICIAN ASSISTANT | 104 | 18 | $3,291 | $183 | premium | 4.5% | — |
| 79 | PHOEBE PHYSICIAN GROUP INC | AMERICUS | GA | NURSE PRACTITIONER | 442 | 17 | $2,159 | $127 | premium | 13.8% | (229) 928-2882 |
| 80 | RADIOLOGY CONSULTANTS PC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 46 | 17 | $3,383 | $199 | premium | 100.0% | (402) 717-4760 |
| 81 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 17 | $26,452 | $1,556 | premium | 1.6% | (904) 953-2000 |
| 82 | UNIVERSITY OF MARYLAND COMMUNITY MEDICAL GROUP INC | GLEN BURNIE | DE | NURSE PRACTITIONER | 458 | 17 | $2,873 | $169 | premium | 22.7% | (410) 761-1222 |
| 83 | UNIVERSITY OF ALABAMA HEALTH SERVICES FOUNDATION, PC | BIRMINGHAM | AL | NURSE PRACTITIONER | 2788 | 17 | $5,270 | $310 | premium | 37.8% | (205) 934-3460 |
| 84 | MEDSTAR MEDICAL GROUP II LLC | WASHINGTON | MD | PHYSICIAN ASSISTANT | 3707 | 17 | $2,759 | $162 | premium | 6.3% | (202) 429-2401 |
| 85 | OLYMPIC MEDICAL IMAGING CONSULTANTS, PLLC | SILVERDALE | WA | DIAGNOSTIC RADIOLOGY | 17 | 16 | $2,272 | $142 | premium | 21.3% | (360) 337-6500 |
| 86 | RADIOLOGY OF MSMC, LLC | MIAMI | FL | DIAGNOSTIC RADIOLOGY | 23 | 16 | $5,120 | $320 | premium | 1.5% | (305) 674-3905 |
| 87 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 16 | $2,880 | $180 | premium | 5.9% | (704) 332-1291 |
| 88 | DARTMOUTH-HITCHCOCK CLINIC | LEBANON | NH | PHYSICIAN ASSISTANT | 1441 | 16 | $14,464 | $904 | premium | 100.0% | (603) 650-5000 |
| 89 | INNOVATIVE RADIOLOGY PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 31 | 16 | $8,072 | $504 | premium | 3.3% | (713) 797-1919 |
| 90 | DIAGNOSTIC IMAGING ALLIANCE OF LOUISVILLE PSC | LOUISVILLE | CO | DIAGNOSTIC RADIOLOGY | 28 | 16 | $2,880 | $180 | premium | 6.2% | (502) 896-2120 |
| 91 | PHYSICIANS REFERRAL SERVICE | HOUSTON | TX | NURSE PRACTITIONER | 2696 | 15 | $6,411 | $427 | premium | 3.1% | (713) 592-5433 |
| 92 | MONTEFIORE MEDICAL CENTER | BRONX | NY | PHYSICAL THERAPIST IN PRIVATE PRACTICE | 2796 | 15 | $7,350 | $490 | premium | 3.4% | (866) 633-8255 |
| 93 | ST JUDE RADIOLOGY MEDICAL GROUP INC | FULLERTON | CA | DIAGNOSTIC RADIOLOGY | 61 | 14 | $3,472 | $248 | premium | 1.7% | 71499230001805 |
| 94 | COOPER UNIVERSITY RADIOLOGY PC | CAMDEN | NJ | DIAGNOSTIC RADIOLOGY | 68 | 14 | $2,618 | $187 | premium | 7.1% | — |
| 95 | ALLEN MEMORIAL HOSPITAL CORPORATION | WATERLOO | IA | NURSE PRACTITIONER | 140 | 14 | $1,837 | $131 | premium | 15.1% | (319) 233-2701 |
| 96 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | CT | PHYSICIAN ASSISTANT | 6294 | 14 | $4,142 | $296 | premium | 38.9% | — |
| 97 | RADIOLOGY INC | HUNTINGTON | WV | DIAGNOSTIC RADIOLOGY | 28 | 14 | $3,556 | $254 | premium | 51.9% | (304) 526-1140 |
| 98 | RADIOLOGY INC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 57 | 14 | $3,472 | $248 | premium | 4.3% | (614) 234-5100 |
| 99 | WEST COUNTY RADIOLOGICAL GROUP INC | SAINT LOUIS | MO | DIAGNOSTIC RADIOLOGY | 104 | 13 | $2,457 | $189 | premium | 8.7% | (314) 941-5600 |
| 100 | ENGLEWOOD RADIOLOGIC GROUP P A | ENGLEWOOD | NY | DIAGNOSTIC RADIOLOGY | 125 | 13 | $2,496 | $192 | premium | 3.0% | (201) 894-3480 |
Showing the top 100 of 113 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 →