74021 — X-ray of abdomen, minimum of 3 views
6,994 observed fee-for-service (50%) · ~7,035 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 | 74021 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | SOUTHERN UROLOGY LLC | OPELOUSAS | LA | UROLOGY | 28 | 1,356 | $183,125 | $135 | premium | 77.8% | (337) 594-4025 |
| 2 | UROLOGY PROFESSIONAL ASSOCIATION | TUPELO | MS | NURSE PRACTITIONER | 15 | 1,225 | $91,875 | $75 | premium | 79.3% | (662) 432-0700 |
| 3 | GRUNDY RADIOLOGISTS INC | MORRIS | IL | DIAGNOSTIC RADIOLOGY | 5 | 241 | $18,075 | $75 | premium | 26.1% | (815) 942-2932 |
| 4 | ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI | NEW YORK | NY | PHYSICIAN ASSISTANT | 2818 | 229 | $33,407 | $146 | premium | 16.2% | (212) 241-4812 |
| 5 | SUSQUEHANNA IMAGING ASSOCIATES, INC. | WILLIAMSPORT | PA | DIAGNOSTIC RADIOLOGY | 8 | 131 | $9,432 | $72 | premium | 15.9% | (570) 326-8171 |
| 6 | SUSQUEHANNA IMAGING ASSOCIATES, INC. | WILLIAMSPORT | NY | DIAGNOSTIC RADIOLOGY | 8 | 126 | $9,072 | $72 | premium | 8.9% | (570) 326-8171 |
| 7 | SPARTANBURG MEDICAL CENTER | SPARTANBURG | SC | NURSE PRACTITIONER | 1070 | 122 | $7,029 | $58 | premium | 49.4% | (864) 587-3000 |
| 8 | RADIOLOGY CONSULTANTS PC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 46 | 93 | $3,813 | $41 | premium | 25.6% | (402) 717-4760 |
| 9 | FAITH REGIONAL PHYSICIAN SERVICES LLC | NORFOLK | NE | NURSE PRACTITIONER | 185 | 81 | $5,994 | $74 | premium | 22.3% | (402) 371-4880 |
| 10 | QUANTUM IMAGING AND THERAPEUTIC ASSOCIATES INC | HARRISBURG | PA | DIAGNOSTIC RADIOLOGY | 90 | 79 | $3,886 | $49 | premium | 9.6% | (717) 932-5200 |
| 11 | TRISTATE IMG (IMAGING MEDICAL GROUP) INC | CINCINNATI | OH | DIAGNOSTIC RADIOLOGY | 44 | 74 | $3,034 | $41 | premium | 12.0% | (513) 865-1331 |
| 12 | GREATER WASHINGTON RADIOLOGISTS, INC. | WASHINGTON | PA | DIAGNOSTIC RADIOLOGY | 8 | 72 | $3,528 | $49 | premium | 8.7% | (724) 745-3796 |
| 13 | MUNSTER RADIOLOGY GROUP PC | MUNSTER | IN | DIAGNOSTIC RADIOLOGY | 26 | 72 | $3,744 | $52 | premium | 71.3% | (219) 836-1600 |
| 14 | WASHINGTON PHYSICIAN SERVICES | WASHINGTON | PA | PHYSICIAN ASSISTANT | 104 | 71 | $3,479 | $49 | premium | 8.6% | — |
| 15 | KENT RADIOLOGY PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 18 | 65 | $2,930 | $45 | premium | 25.6% | (616) 685-5907 |
| 16 | RADIOLOGICAL PHYSICIAN ASSOCIATES INC | BRIDGEPORT | WV | DIAGNOSTIC RADIOLOGY | 28 | 62 | $3,596 | $58 | premium | 70.5% | (681) 342-1000 |
| 17 | TRIAD RADIOLOGY ASSOCIATES PLLC | WINSTON SALEM | NC | DIAGNOSTIC RADIOLOGY | 78 | 56 | $2,240 | $40 | premium | 20.1% | (336) 718-7800 |
| 18 | RADIOLOGY ASSOCIATES OF MURRAY PLLC | BENTON | KY | DIAGNOSTIC RADIOLOGY | 12 | 56 | $2,240 | $40 | premium | 39.7% | (270) 527-4800 |
| 19 | CRAWFORD ANDREWS AND DAVIS PTR | BEAUMONT | TX | DIAGNOSTIC RADIOLOGY | 46 | 54 | $2,916 | $54 | premium | 16.3% | (409) 892-7171 |
| 20 | SUSQUEHANNA IMAGING ASSOCIATES, INC. | WILLIAMSPORT | MD | DIAGNOSTIC RADIOLOGY | 8 | 52 | $3,744 | $72 | premium | 7.8% | (570) 326-8171 |
| 21 | UNIVERSITY OF MARYLAND COMMUNITY MEDICAL GROUP INC | GLEN BURNIE | MN | NURSE PRACTITIONER | 458 | 52 | $7,119 | $137 | premium | 31.5% | (410) 761-1222 |
| 22 | MIDDLE TENNESSEE UROLOGY SPECIALISTS PLLC | MURFREESBORO | TN | UROLOGY | 6 | 49 | $3,528 | $72 | premium | 43.4% | (615) 893-1600 |
| 23 | JEFFERSON CITY MEDICAL GROUP PC | JEFFERSON CITY | MO | NURSE PRACTITIONER | 115 | 49 | $1,372 | $28 | premium | 26.3% | (573) 556-5771 |
| 24 | UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL | CHAPEL HILL | VA | NURSE PRACTITIONER | 2120 | 49 | $2,156 | $44 | premium | 12.5% | (984) 215-5556 |
| 25 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 48 | $2,208 | $46 | premium | 5.0% | (973) 971-6866 |
| 26 | STARKVILLE RADIOLOGY PLLC | STARKVILLE | MS | DIAGNOSTIC RADIOLOGY | 2 | 48 | $2,304 | $48 | premium | 3.1% | (662) 323-4320 |
| 27 | RADIOLOGY ASSOCIATES OF NORTHERN KENTUCKY PLLC | EDGEWOOD | KY | DIAGNOSTIC RADIOLOGY | 56 | 46 | $1,380 | $30 | premium | 32.6% | (859) 301-2160 |
| 28 | UCLA RADIOLOGY MEDICAL GROUP | LOS ANGELES | CA | DIAGNOSTIC RADIOLOGY | 191 | 45 | $8,993 | $200 | premium | 5.9% | (310) 301-6800 |
| 29 | BAYVIEW PHYSICIAN SERVICES PC | CHESAPEAKE | VA | PHYSICIAN ASSISTANT | 322 | 45 | $4,050 | $90 | premium | 11.5% | (757) 410-4488 |
| 30 | COASTAL IMAGING LLC | MANAHAWKIN | NJ | DIAGNOSTIC RADIOLOGY | 63 | 44 | $1,760 | $40 | premium | 4.6% | (609) 597-6011 |
| 31 | CLEVELAND CLINIC HEALTH SERVICES PROFESSIONAL ASSOCIATION, INC | FRISCO | TX | DIAGNOSTIC RADIOLOGY | 60 | 43 | $4,945 | $115 | premium | 13.0% | (630) 235-2454 |
| 32 | UNIVERSITY OF ALABAMA HEALTH SERVICES FOUNDATION, PC | BIRMINGHAM | AL | NURSE PRACTITIONER | 2788 | 43 | $2,743 | $64 | premium | 23.6% | (205) 934-3460 |
| 33 | UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL | CHAPEL HILL | AR | NURSE PRACTITIONER | 2120 | 43 | $1,892 | $44 | premium | 24.7% | (984) 215-5556 |
| 34 | STEUBEN RADIOLOGY ASSOCIATES INC | STEUBENVILLE | PA | DIAGNOSTIC RADIOLOGY | 58 | 42 | $1,722 | $41 | premium | 5.1% | (740) 264-8287 |
| 35 | RADIOLOGY ASSOCIATES LLC | BATON ROUGE | LA | DIAGNOSTIC RADIOLOGY | 79 | 40 | $1,960 | $49 | premium | 2.3% | (225) 757-0552 |
| 36 | DIAGNOSTIC IMAGING ASSOCIATES, P.C. | DES MOINES | IA | DIAGNOSTIC RADIOLOGY | 21 | 40 | $2,080 | $52 | premium | 64.5% | (515) 643-2667 |
| 37 | UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL | CHAPEL HILL | NC | NURSE PRACTITIONER | 2120 | 39 | $1,716 | $44 | premium | 14.0% | (984) 215-5556 |
| 38 | MILLENNIUM PHYSICIAN GROUP LLC | PORT CHARLOTTE | FL | PHYSICIAN ASSISTANT | 953 | 38 | $3,281 | $86 | premium | 6.4% | (941) 255-3535 |
| 39 | RADIOLOGISTS PA | FORT SMITH | AR | DIAGNOSTIC RADIOLOGY | 19 | 38 | $1,748 | $46 | premium | 21.8% | (479) 474-1616 |
| 40 | ENGLEWOOD RADIOLOGIC GROUP P A | ENGLEWOOD | NJ | DIAGNOSTIC RADIOLOGY | 125 | 38 | $1,824 | $48 | premium | 3.9% | (201) 894-3480 |
| 41 | PREMIER MEDICAL GROUP OF THE HUDSON VALLEY PC | POUGHKEEPSIE | NY | NURSE PRACTITIONER | 131 | 38 | $4,332 | $114 | premium | 2.7% | — |
| 42 | JACKSON CLINIC PA | JACKSON | TN | NURSE PRACTITIONER | 183 | 38 | $2,599 | $68 | premium | 33.6% | (731) 422-0213 |
| 43 | COLONIAL FAMILY PRACTICE LLC | SUMTER | SC | DIAGNOSTIC RADIOLOGY | 57 | 37 | $4,329 | $117 | premium | 15.0% | (803) 773-5227 |
| 44 | UNMC PHYSICIANS | OMAHA | NE | PHYSICIAN ASSISTANT | 1514 | 37 | $1,295 | $35 | premium | 10.2% | (402) 559-4000 |
| 45 | KERN RADIOLOGY MEDICAL GROUP INC | BAKERSFIELD | CA | DIAGNOSTIC RADIOLOGY | 87 | 35 | $1,470 | $42 | premium | 4.6% | (661) 616-1458 |
| 46 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 34 | $952 | $28 | premium | 4.1% | — |
| 47 | MORI BEAN AND BROOKS INC | ORANGE PARK | FL | DIAGNOSTIC RADIOLOGY | 947 | 33 | $5,503 | $167 | premium | 5.6% | (904) 399-5550 |
| 48 | TIDEWATER PHYSICIANS MULTISPECIALTY GROUP, PC | NEWPORT NEWS | VA | FAMILY PRACTICE | 274 | 32 | $3,136 | $98 | premium | 8.2% | (757) 595-9880 |
| 49 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 32 | $4,736 | $148 | premium | 2.3% | (212) 263-9700 |
| 50 | SOUTHERN NEW ENGLAND RADIOLOGY INC | FALL RIVER | MA | DIAGNOSTIC RADIOLOGY | 22 | 31 | $1,116 | $36 | premium | 22.1% | (508) 679-7136 |
| 51 | MINERAL KING RADIOLOGICAL MEDICAL GROUP INC | VISALIA | CA | DIAGNOSTIC RADIOLOGY | 17 | 31 | $1,085 | $35 | premium | 4.1% | (559) 734-5674 |
| 52 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 30 | $1,290 | $43 | premium | 10.8% | (252) 752-5000 |
| 53 | FLORIDA CLINICAL PRACTICE ASSOCIATION INC | GAINESVILLE | FL | NURSE PRACTITIONER | 1912 | 29 | $2,106 | $73 | premium | 4.9% | (352) 265-8990 |
| 54 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 28 | $1,512 | $54 | premium | 8.5% | (817) 321-0470 |
| 55 | NORTHWEST RADIOLOGY ASSOCIATES SC | ARLINGTON HEIGHTS | IL | DIAGNOSTIC RADIOLOGY | 21 | 27 | $1,377 | $51 | premium | 2.9% | (847) 618-1000 |
| 56 | GREATER WASHINGTON RADIOLOGISTS, INC. | WASHINGTON | NJ | DIAGNOSTIC RADIOLOGY | 8 | 27 | $1,323 | $49 | premium | 2.8% | (724) 745-3796 |
| 57 | H LEE MOFFITT CANCER CTR AND RES INST LIFE TIME CANCER SCRN CTR INC | TAMPA | FL | PHYSICIAN ASSISTANT | 1103 | 27 | $1,313 | $49 | premium | 4.5% | (813) 745-4673 |
| 58 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 26 | $2,626 | $101 | premium | 9.3% | (704) 362-1945 |
| 59 | SUMMIT RADIOLOGY P C | FORT WAYNE | WA | DIAGNOSTIC RADIOLOGY | 104 | 26 | $1,430 | $55 | premium | 22.2% | (260) 432-1568 |
| 60 | BUTLER IMAGING AND INTERVENTIONAL ASSOCIATES LLC | BUTLER | PA | DIAGNOSTIC RADIOLOGY | 44 | 25 | $1,050 | $42 | premium | 3.0% | — |
| 61 | SPARTANBURG MEDICAL CENTER | SPARTANBURG | NC | NURSE PRACTITIONER | 1070 | 25 | $1,339 | $54 | premium | 9.0% | (864) 587-3000 |
| 62 | SOUTH SHORE RADIOLOGICAL ASSOCIATES INC | SOUTH WEYMOUTH | CA | DIAGNOSTIC RADIOLOGY | 36 | 24 | $1,080 | $45 | premium | 3.1% | (781) 340-8000 |
| 63 | LEXINGTON HEALTH INC | WEST COLUMBIA | SC | NURSE PRACTITIONER | 909 | 24 | $13,611 | $567 | premium | 9.7% | (803) 744-4900 |
| 64 | MEMORIALCARE MEDICAL FOUNDATION | LONG BEACH | CA | FAMILY PRACTICE | 549 | 23 | $506 | $22 | premium | 3.0% | (562) 346-2222 |
| 65 | LOURDES IMAGING ASSOCIATES PA | CAMDEN | PA | DIAGNOSTIC RADIOLOGY | 15 | 23 | $1,025 | $45 | premium | 2.8% | (856) 616-8100 |
| 66 | ADVANCED MIDWEST RADIOLOGY S C | NEW LENOX | AZ | DIAGNOSTIC RADIOLOGY | 25 | 23 | $1,380 | $60 | premium | 21.9% | (815) 717-8478 |
| 67 | BORG AND IDE IMAGING PC | ROCHESTER | NY | DIAGNOSTIC RADIOLOGY | 14 | 22 | $2,618 | $119 | premium | 1.6% | (585) 241-6600 |
| 68 | MORI BEAN AND BROOKS INC | ORANGE PARK | NC | DIAGNOSTIC RADIOLOGY | 947 | 22 | $5,104 | $232 | premium | 7.9% | (904) 399-5550 |
| 69 | WEST WICHITA FAMILY PHYSICIANS, P.A. | WICHITA | KS | FAMILY PRACTICE | 37 | 22 | $2,165 | $98 | premium | 26.5% | — |
| 70 | EMPIRE STATE RADIOLOGY P C | PORT JERVIS | NY | DIAGNOSTIC RADIOLOGY | 280 | 22 | $5,104 | $232 | premium | 1.6% | (718) 223-4685 |
| 71 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 22 | $990 | $45 | premium | 2.4% | — |
| 72 | ST AGNES HEALTHCARE INC | BALTIMORE | MI | PHYSICIAN ASSISTANT | 277 | 21 | $819 | $39 | premium | 8.3% | (667) 234-6000 |
| 73 | FLORIDA RADIOLOGY ASSOCIATES LLC | SARASOTA | MI | DIAGNOSTIC RADIOLOGY | 63 | 21 | $1,522 | $72 | premium | 8.3% | (469) 757-1042 |
| 74 | MIDDLE TENNESSEE UROLOGY SPECIALISTS PLLC | MURFREESBORO | SC | UROLOGY | 6 | 20 | $1,440 | $72 | premium | 8.1% | (615) 893-1600 |
| 75 | SOUTHERN NEW ENGLAND RADIOLOGY INC | FALL RIVER | RI | DIAGNOSTIC RADIOLOGY | 22 | 19 | $684 | $36 | premium | 100.0% | (508) 679-7136 |
| 76 | TEXAS TECH UNIVERSITY HEALTH SCIENCES CENTER EL PASO | EL PASO | TX | NURSE PRACTITIONER | 306 | 19 | $665 | $35 | premium | 5.7% | (915) 215-5200 |
| 77 | MILLENNIUM MEDICAL IMAGING PC | SARATOGA SPRINGS | NJ | DIAGNOSTIC RADIOLOGY | 33 | 19 | $912 | $48 | premium | 2.0% | (518) 583-8461 |
| 78 | REGIONAL MEDICAL IMAGING PC | FLINT | MI | DIAGNOSTIC RADIOLOGY | 22 | 19 | $1,085 | $57 | premium | 7.5% | (810) 732-8870 |
| 79 | UPMC CHAUTAUQUA AT WCA | JAMESTOWN | MN | DIAGNOSTIC RADIOLOGY | 25 | 19 | $456 | $24 | premium | 11.5% | (716) 487-0141 |
| 80 | SUBURBAN RADIOLOGISTS, S.C. | HINSDALE | IL | DIAGNOSTIC RADIOLOGY | 22 | 19 | $1,615 | $85 | premium | 2.1% | (630) 856-9000 |
| 81 | ADVANCED MIDWEST RADIOLOGY S C | NEW LENOX | IL | DIAGNOSTIC RADIOLOGY | 25 | 18 | $1,080 | $60 | premium | 2.0% | (815) 717-8478 |
| 82 | ADVANCED MEDICAL IMAGING LLC | ROCK SPRINGS | WY | DIAGNOSTIC RADIOLOGY | 3 | 17 | $3,143 | $185 | premium | 41.5% | (786) 621-3900 |
| 83 | WINCHESTER RADIOLOGISTS PC | WINCHESTER | VA | DIAGNOSTIC RADIOLOGY | 79 | 17 | $1,071 | $63 | premium | 4.3% | (540) 686-1600 |
| 84 | HUMBOLDT RADIOLOGY MEDICAL GROUP,INC | EUREKA | CA | DIAGNOSTIC RADIOLOGY | 13 | 17 | $612 | $36 | premium | 2.2% | (707) 445-5431 |
| 85 | TOLEDO RADIOLOGICAL ASSOCIATES INC | COLDWATER | OH | DIAGNOSTIC RADIOLOGY | 51 | 17 | $714 | $42 | premium | 2.8% | (517) 279-5400 |
| 86 | UNIVERSITY OF CINCINNATI PHYSICIANS COMPANY LLC | CINCINNATI | OH | NURSE PRACTITIONER | 1504 | 17 | $646 | $38 | premium | 2.8% | (513) 584-1000 |
| 87 | SUMMIT RADIOLOGY P C | FORT WAYNE | PA | DIAGNOSTIC RADIOLOGY | 104 | 17 | $935 | $55 | premium | 2.1% | (260) 432-1568 |
| 88 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | OK | DIAGNOSTIC RADIOLOGY | 29 | 16 | $608 | $38 | premium | 11.9% | (812) 422-3254 |
| 89 | THE ASSOCIATION OF UNIVERSITY PHYSICIANS | SEATTLE | WA | PHYSICIAN ASSISTANT | 3612 | 16 | $643 | $40 | premium | 13.7% | (206) 364-0500 |
| 90 | STEPHEN W BROWN AND RADIOLOGY ASSOCIATES OF AUGUSTA LLP | AUGUSTA | GA | DIAGNOSTIC RADIOLOGY | 19 | 16 | $1,072 | $67 | premium | 15.2% | (706) 774-5035 |
| 91 | PREMIER MEDICAL CLINIC | TALLAHASSEE | FL | INTERNAL MEDICINE | 2 | 15 | $3,150 | $210 | premium | 2.5% | (850) 584-3278 |
| 92 | RADIOLOGY CONSULTANTS PC | OMAHA | FL | DIAGNOSTIC RADIOLOGY | 46 | 15 | $609 | $41 | premium | 2.5% | (402) 717-4760 |
| 93 | PROGRESSIVE URGENT CARE PC | ANNANDALE | VA | FAMILY PRACTICE | 2 | 15 | $1,500 | $100 | premium | 3.8% | (703) 333-5001 |
| 94 | HERITAGE VALLEY RADIOLOGY, INC. | BEAVER | PA | DIAGNOSTIC RADIOLOGY | 25 | 15 | $570 | $38 | premium | 1.8% | (724) 728-7000 |
| 95 | MILLENNIUM MEDICAL IMAGING PC | SARATOGA SPRINGS | FL | DIAGNOSTIC RADIOLOGY | 33 | 15 | $720 | $48 | premium | 2.5% | (518) 583-8461 |
| 96 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NY | DIAGNOSTIC RADIOLOGY | 97 | 15 | $690 | $46 | premium | 1.1% | (973) 971-6866 |
| 97 | REGIONAL HEALTH SERVICES INC | ERIE | PA | PHYSICIAN ASSISTANT | 588 | 15 | $450 | $30 | premium | 1.8% | — |
| 98 | WOODLANDS MEDICAL SPECIALISTS P A | PENSACOLA | FL | PHYSICIAN ASSISTANT | 51 | 15 | $1,845 | $123 | premium | 2.5% | (850) 696-4000 |
| 99 | AHS OKLAHOMA PHYSICIAN GROUP LLC | TULSA | OK | FAMILY PRACTICE | 308 | 14 | $1,106 | $79 | premium | 10.4% | — |
| 100 | COASTAL IMAGING LLC | MANAHAWKIN | PA | DIAGNOSTIC RADIOLOGY | 63 | 14 | $560 | $40 | premium | 1.7% | (609) 597-6011 |
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 →