38,524 observed fee-for-service (50%) · ~38,622 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 | 93290 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 | HEALTHTEXAS PROVIDER NETWORK | DALLAS | TX | PHYSICIAN ASSISTANT | 2482 | 1,223 | $248,061 | $203 | premium | 29.3% | — |
| 2 | NEVADA HEART AND VASCULAR CENTER RESH LLP | LAS VEGAS | NV | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 42 | 861 | $70,609 | $82 | premium | 72.8% | (702) 240-6482 |
| 3 | MEMORIAL HEALTH CARE SYSTEM INC. | CHATTANOOGA | TN | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 56 | 799 | $89,509 | $112 | premium | 41.1% | (423) 697-2000 |
| 4 | WASHINGTON REGIONAL MEDICAL SYSTEM | FAYETTEVILLE | AR | NURSE PRACTITIONER | 241 | 746 | $59,680 | $80 | premium | 28.2% | (479) 571-4338 |
| 5 | UNIVERSITY OF VIRGINIA PHYSICIANS GROUP | CHARLOTTESVILLE | VA | NURSE PRACTITIONER | 1704 | 743 | $38,636 | $52 | premium | 28.1% | (434) 924-5959 |
| 6 | FLORIDA ELECTROPHYSIOLOGY ASSOCIATES PA | ATLANTIS | FL | CARDIAC ELECTROPHYSIOLOGY | 14 | 677 | $178,835 | $264 | premium | 9.1% | (561) 434-0353 |
| 7 | VIRTUA MEDICAL GROUP, PA | VOORHEES | NJ | PHYSICIAN ASSISTANT | 1662 | 669 | $93,660 | $140 | premium | 18.8% | (856) 247-7260 |
| 8 | NCHMD INC | NAPLES | FL | NEUROLOGY | 515 | 657 | $45,990 | $70 | premium | 8.8% | (239) 436-5100 |
| 9 | COTTON-O'NEIL CLINIC REVOCABLE TRUST | TOPEKA | KS | NURSE PRACTITIONER | 649 | 636 | $88,904 | $140 | premium | 28.2% | (785) 354-9591 |
| 10 | TRIHEALTH H LLC | CINCINNATI | OH | OBSTETRICS/GYNECOLOGY | 853 | 615 | $54,120 | $88 | premium | 26.5% | (513) 246-7000 |
| 11 | BAPTIST HEALTH | LITTLE ROCK | AR | NURSE PRACTITIONER | 106 | 546 | $29,412 | $54 | premium | 20.6% | (501) 227-7596 |
| 12 | COMMUNITY MEDICAL ASSOCIATES INC | LOUISVILLE | KY | NURSE PRACTITIONER | 1377 | 492 | $46,946 | $95 | premium | 42.4% | (502) 937-2209 |
| 13 | KETTERING INDEPENDENT MEDICAL GROUP INC | KETTERING | OH | NURSE PRACTITIONER | 691 | 472 | $22,227 | $47 | premium | 20.3% | (937) 395-8646 |
| 14 | ST. PETER'S HEALTH PARTNERS MEDICAL ASSOCIATES, P.C. | ALBANY | NY | PHYSICIAN ASSISTANT | 480 | 469 | $32,102 | $68 | premium | 8.3% | (518) 525-1852 |
| 15 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 459 | $78,899 | $172 | premium | 8.1% | — |
| 16 | HARTFORD HEALTHCARE MEDICAL GROUP SPECIALISTS PLLC | STORRS | CT | PHYSICIAN ASSISTANT | 1493 | 432 | $92,720 | $215 | premium | 65.7% | (860) 724-2579 |
| 17 | ST DAVIDS HEART AND VASCULAR PLLC | AUSTIN | TX | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 199 | 427 | $48,726 | $114 | premium | 10.2% | (512) 899-2028 |
| 18 | ADVENTIST PHYSICIAN SERVICES INC | ROCKVILLE | MD | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 145 | 417 | $43,798 | $105 | premium | 12.8% | (301) 670-3000 |
| 19 | MCV ASSOCIATED PHYSICIANS | RICHMOND | VA | NURSE PRACTITIONER | 1791 | 406 | $36,686 | $90 | premium | 15.3% | (804) 828-9000 |
| 20 | USC CARE MEDICAL GROUP INC | LOS ANGELES | CA | DIAGNOSTIC RADIOLOGY | 1374 | 398 | $42,400 | $107 | premium | 5.1% | (800) 872-2273 |
| 21 | HUDSON VALLEY CARDIOVASCULAR PRACTICE PC | POUGHKEEPSIE | NY | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 72 | 397 | $74,577 | $188 | premium | 7.0% | (845) 473-1188 |
| 22 | HEALTH FIRST MEDICAL GROUP, LLC | MELBOURNE | FL | NURSE PRACTITIONER | 669 | 379 | $40,110 | $106 | premium | 5.1% | (321) 434-8878 |
| 23 | BAYHEALTH MEDICAL CENTER, INC | DOVER | DE | NURSE PRACTITIONER | 394 | 371 | $29,231 | $79 | premium | 69.6% | (302) 744-4700 |
| 24 | CENTRIC HEALTH | BAKERSFIELD | CA | INTERNAL MEDICINE | 63 | 370 | $28,860 | $78 | premium | 4.7% | — |
| 25 | BAPTIST MEDICAL GROUP LLC | PENSACOLA | FL | PHYSICIAN ASSISTANT | 248 | 368 | $29,960 | $81 | premium | 4.9% | — |
| 26 | ST LOUIS HEART AND VASCULAR PC | SAINT LOUIS | MO | INTERVENTIONAL CARDIOLOGY | 23 | 358 | $23,810 | $67 | premium | 29.0% | (314) 741-0911 |
| 27 | INTEGRATED CARDIOLOGY GROUP LLC | LINCOLN | NE | PHYSICIAN ASSISTANT | 78 | 338 | $40,094 | $119 | premium | 76.3% | (402) 483-3333 |
| 28 | OHI WEST MEDICAL GROUP II LLC | ZEPHYRHILLS | FL | NURSE PRACTITIONER | 417 | 337 | $45,186 | $134 | premium | 4.5% | (813) 751-3375 |
| 29 | ADVENTIST HEALTH PARTNERS INC | HINSDALE | IL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 46 | 324 | $51,516 | $159 | premium | 31.6% | (630) 789-3422 |
| 30 | UNIVERSITY OF MARYLAND PHYSICIANS PA | BALTIMORE | MD | NURSE PRACTITIONER | 396 | 319 | $12,760 | $40 | premium | 9.8% | (410) 328-7877 |
| 31 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 304 | $41,508 | $137 | premium | 3.9% | (415) 600-1020 |
| 32 | EISENHOWER MEDICAL CENTER | RANCHO MIRAGE | CA | NURSE PRACTITIONER | 457 | 291 | $10,211 | $35 | premium | 3.7% | (760) 340-3911 |
| 33 | GENERAL PHYSICIAN PC | BUFFALO | NY | PHYSICIAN ASSISTANT | 462 | 282 | $18,330 | $65 | premium | 5.0% | (716) 884-3000 |
| 34 | PREMIER HEALTH SPECIALISTS INC | DAYTON | OH | PHYSICIAN ASSISTANT | 574 | 282 | $20,807 | $74 | premium | 12.1% | — |
| 35 | MEDSTAR MEDICAL GROUP - SOUTHERN MARYLAND LLC | HOLLYWOOD | MD | INTERNAL MEDICINE | 236 | 279 | $23,157 | $83 | premium | 8.5% | — |
| 36 | CARDIAC ARRHYTHMIA SPECIALIST PC | CLIFTON | NJ | CARDIAC ELECTROPHYSIOLOGY | 2 | 278 | $29,190 | $105 | premium | 7.8% | (973) 340-9400 |
| 37 | MERITAS HEALTH CORPORATION | NORTH KANSAS CITY | MO | NEUROLOGY | 498 | 277 | $34,340 | $124 | premium | 22.4% | (816) 472-5157 |
| 38 | UNIVERSITY MEDICAL SERVICE ASSOCIATION INC | TAMPA | FL | NURSE PRACTITIONER | 814 | 275 | $45,650 | $166 | premium | 3.7% | — |
| 39 | MACON ELECTROPHYSIOLOGY ASSOCIATES | MACON | GA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 7 | 273 | $40,950 | $150 | premium | 18.4% | (478) 755-1560 |
| 40 | BARNABAS HEALTH MEDICAL GROUP PC | LIVINGSTON | NJ | NURSE PRACTITIONER | 990 | 263 | $93,891 | $357 | premium | 7.4% | — |
| 41 | CHRISTUS TRINITY CLINIC | TYLER | TX | NURSE PRACTITIONER | 1495 | 261 | $32,886 | $126 | premium | 6.3% | (903) 606-5560 |
| 42 | SPECTRUM HEALTH PRIMARY CARE PARTNERS | GRAND RAPIDS | MI | PHYSICIAN ASSISTANT | 2255 | 260 | $13,844 | $53 | premium | 19.4% | (616) 885-5000 |
| 43 | UNIVERSITY PRIMARY CARE PRACTICES INC | CONNEAUT | OH | FAMILY PRACTICE | 1067 | 256 | $17,772 | $69 | premium | 11.0% | — |
| 44 | ST VINCENT INFIRMARY MEDICAL CENTER | LITTLE ROCK | AR | NURSE PRACTITIONER | 47 | 250 | $10,350 | $41 | premium | 9.4% | (501) 255-6000 |
| 45 | BEAUMONT MEDICAL GROUP- SPECIALTY SERVICES | ROYAL OAK | MI | PHYSICIAN ASSISTANT | 833 | 245 | $28,168 | $115 | premium | 18.3% | (248) 898-5058 |
| 46 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 244 | $54,529 | $223 | premium | 3.1% | (858) 455-9100 |
| 47 | PIONEER VALLEY CARDIOLOGY ASSOCIATES, INC | SPRINGFIELD | MA | NURSE PRACTITIONER | 24 | 243 | $17,007 | $70 | premium | 14.4% | (413) 748-7095 |
| 48 | HAMILTON CARDIOLOGY ASSOCIATES PA | HAMILTON | NJ | INTERVENTIONAL CARDIOLOGY | 20 | 236 | $16,520 | $70 | premium | 6.6% | (609) 584-1212 |
| 49 | THE HEART GROUP OF LANCASTER GENERAL HEALTH | LANCASTER | PA | NURSE PRACTITIONER | 61 | 229 | $14,399 | $63 | premium | 13.0% | (717) 544-8300 |
| 50 | ST. JOSEPH'S CARDIOLOGY GROUP LLC | SAVANNAH | GA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 17 | 221 | $19,817 | $90 | premium | 14.9% | (912) 927-3434 |
| 51 | UNION ASSOCIATED PHYSICIANS CLINIC, LLC | TERRE HAUTE | IN | NURSE PRACTITIONER | 229 | 220 | $13,360 | $61 | premium | 26.3% | (812) 232-0564 |
| 52 | ORLANDO HEALTH MEDICAL GROUP INC | ORLANDO | FL | PHYSICIAN ASSISTANT | 2145 | 218 | $15,696 | $72 | premium | 2.9% | (407) 896-1100 |
| 53 | BARNABAS HEALTH MEDICAL GROUP, PC | NEWARK | NJ | PSYCHIATRY | 254 | 211 | $50,218 | $238 | premium | 5.9% | (973) 926-7814 |
| 54 | REGIONAL CARDIAC ARRHYTHMIA INC | WHEELING | WV | CARDIAC ELECTROPHYSIOLOGY | 10 | 206 | $12,772 | $62 | premium | 52.8% | (304) 243-3358 |
| 55 | UNIVERSITY OF MIAMI | MIAMI | FL | NURSE PRACTITIONER | 2331 | 205 | $17,398 | $85 | premium | 2.8% | (305) 689-5437 |
| 56 | TEXAS HEALTH PHYSICIANS GROUP | FORT WORTH | TX | PHYSICIAN ASSISTANT | 1350 | 199 | $11,415 | $57 | premium | 4.8% | (817) 281-2977 |
| 57 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 199 | $120,793 | $607 | premium | 3.5% | (212) 263-9700 |
| 58 | NAPLES HEART RHYTHM SPECIALISTS PA | NAPLES | FL | PHYSICIAN ASSISTANT | 21 | 198 | $22,968 | $116 | premium | 2.7% | (239) 263-0849 |
| 59 | MASS GENERAL BRIGHAM MEDICAL GROUP NORTHERN MASSACHUSETTS INC | SALEM | MA | NURSE PRACTITIONER | 803 | 192 | $17,288 | $90 | premium | 11.3% | (978) 741-4133 |
| 60 | MUSC COMMUNITY PHYSICIANS | ORANGEBURG | SC | NURSE PRACTITIONER | 1307 | 191 | $19,878 | $104 | premium | 34.2% | (803) 395-3400 |
| 61 | BEACON MEDICAL GROUP INC | SOUTH BEND | IN | NURSE PRACTITIONER | 575 | 190 | $30,400 | $160 | premium | 22.7% | (574) 647-7275 |
| 62 | OSF MULTI-SPECIALTY GROUP | PEORIA | IL | NURSE PRACTITIONER | 2091 | 184 | $56,470 | $307 | premium | 18.0% | (309) 683-5050 |
| 63 | CENTENNIAL HEART LLC | NASHVILLE | TN | NURSE PRACTITIONER | 121 | 183 | $18,838 | $103 | premium | 9.4% | (615) 515-1900 |
| 64 | CENTER FOR ADVANCED CARDIAC AND VASCULAR INTERVENTIONS | TARZANA | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 11 | 183 | $20,050 | $110 | premium | 2.3% | (818) 905-5904 |
| 65 | KOOTENAI HEALTH INC | COEUR D ALENE | ID | PHYSICIAN ASSISTANT | 383 | 183 | $12,357 | $68 | premium | 77.2% | — |
| 66 | UNIVERSITY OF LOUISVILLE PHYSICIANS INC | LOUISVILLE | KY | NURSE PRACTITIONER | 1442 | 180 | $12,005 | $67 | premium | 15.5% | (502) 629-2398 |
| 67 | STONY BROOK INTERNISTS UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | HOSPITALIST | 414 | 179 | $28,855 | $161 | premium | 3.2% | (631) 444-1560 |
| 68 | HEART SPECIALISTS OF SARASOTA PL | SARASOTA | FL | PHYSICIAN ASSISTANT | 24 | 177 | $18,231 | $103 | premium | 2.4% | (941) 917-1000 |
| 69 | PROMEDICA NORTHWEST OHIO CARDIOLOGY CONSULTANTS LLC | TOLEDO | OH | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 79 | 168 | $17,304 | $103 | premium | 7.2% | (419) 842-3000 |
| 70 | HEARTLAND REGIONAL MEDICAL CENTER | SAINT JOSEPH | MO | NURSE PRACTITIONER | 387 | 165 | $6,039 | $37 | premium | 13.3% | (816) 271-6870 |
| 71 | CARING CARDIOLOGY MEDICAL GROUP | LAGUNA HILLS | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 3 | 164 | $17,548 | $107 | premium | 2.1% | (949) 837-6600 |
| 72 | PROVIDENCE MEDICAL FOUNDATION | FULLERTON | CA | PHYSICIAN ASSISTANT | 1455 | 163 | $28,067 | $172 | premium | 2.1% | (714) 871-3006 |
| 73 | ANIL RASTOGI MD INC | HEMET | CA | CARDIAC ELECTROPHYSIOLOGY | 3 | 162 | $16,200 | $100 | premium | 2.1% | (951) 652-5555 |
| 74 | MIDWEST HEART AND VASCULAR SPECIALISTS LLC | OVERLAND PARK | KS | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 81 | 161 | $19,736 | $123 | premium | 7.1% | (816) 523-7088 |
| 75 | CARDIOLOGY CONSULTANTS OF PHILADELPHIA PC | PHILADELPHIA | PA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 143 | 161 | $16,032 | $100 | premium | 9.1% | (215) 463-5333 |
| 76 | MOWERY CLINIC LLC | SALINA | KS | OBSTETRICS/GYNECOLOGY | 22 | 159 | $17,430 | $110 | premium | 7.0% | — |
| 77 | ST. JOHN PHYSICIANS, INC. | TULSA | OK | NURSE PRACTITIONER | 263 | 159 | $9,852 | $62 | premium | 51.0% | — |
| 78 | NORTH TEXAS ARRHYTHMIA ASSOCIATES PA | DENTON | TX | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 3 | 155 | $18,977 | $122 | premium | 3.7% | (940) 565-0800 |
| 79 | UNIVERSITY OF MARYLAND COMMUNITY MEDICAL GROUP INC | GLEN BURNIE | MD | NURSE PRACTITIONER | 458 | 153 | $25,551 | $167 | premium | 4.7% | (410) 761-1222 |
| 80 | ARIA HEALTH PHYSICIAN SERVICES | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 489 | 152 | $12,920 | $85 | premium | 8.6% | (215) 890-3030 |
| 81 | PREMIER CARDIOLOGY INC | NEWPORT BEACH | CA | PHYSICIAN ASSISTANT | 7 | 151 | $15,100 | $100 | premium | 1.9% | (949) 478-7373 |
| 82 | UNITED MEDICAL ASSOCIATES PC | JOHNSON CITY | NY | NURSE PRACTITIONER | 238 | 149 | $18,920 | $127 | premium | 2.6% | (607) 763-6580 |
| 83 | CHALLAPALLI CARDIOLOGY PC | RENO | NV | PHYSICIAN ASSISTANT | 9 | 144 | $25,096 | $174 | premium | 12.2% | (775) 384-1134 |
| 84 | SHANNON CLINIC | SAN ANGELO | TX | NURSE PRACTITIONER | 515 | 144 | $23,472 | $163 | premium | 3.5% | (325) 747-1511 |
| 85 | NEVADA CARDIOLOGY PROFESSIONAL ASSN | LAS VEGAS | NV | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 11 | 143 | $5,863 | $41 | premium | 12.1% | (702) 233-1000 |
| 86 | ADVANCED CARDIOVASCULAR CONSULTANTS LLC | WEST PALM BEACH | FL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 11 | 143 | $8,425 | $59 | premium | 1.9% | 5618826060227 |
| 87 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | LOS ANGELES | CA | INTERNAL MEDICINE | 1424 | 142 | $20,643 | $145 | premium | 1.8% | (310) 825-7922 |
| 88 | SHAWNEE MISSION MEDICAL CENTER INC | MERRIAM | KS | NURSE PRACTITIONER | 262 | 139 | $15,285 | $110 | premium | 6.2% | (913) 676-2000 |
| 89 | INTEGRIS CARDIOVASCULAR PHYSICIANS LLC | OKLAHOMA CITY | OK | PHYSICIAN ASSISTANT | 114 | 139 | $17,575 | $126 | premium | 44.6% | (405) 951-4345 |
| 90 | TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK | NEW YORK | NY | NURSE PRACTITIONER | 2273 | 138 | $43,980 | $319 | premium | 2.4% | (212) 305-8559 |
| 91 | JACKSON CLINIC PA | JACKSON | TN | NURSE PRACTITIONER | 183 | 138 | $10,350 | $75 | premium | 7.1% | (731) 422-0213 |
| 92 | ECONFINA CARDIOLOGY GROUP PA | PANAMA CITY | FL | NURSE PRACTITIONER | 17 | 132 | $10,560 | $80 | premium | 1.8% | (850) 769-0329 |
| 93 | ALLINA HEALTH SYSTEM | MINNEAPOLIS | MN | PHYSICIAN ASSISTANT | 3855 | 131 | $26,580 | $203 | premium | 65.2% | (612) 863-4000 |
| 94 | JOHN MUIR PHYSICIAN NETWORK | WALNUT CREEK | CA | FAMILY PRACTICE | 489 | 130 | $16,332 | $126 | premium | 1.7% | (925) 296-9720 |
| 95 | THE AROOSTOOK MEDICAL CENTER | PRESQUE ISLE | FL | NURSE PRACTITIONER | 112 | 130 | $8,840 | $68 | premium | 1.7% | — |
| 96 | BAYCARE MEDICAL GROUP, INC. | CLEARWATER | FL | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 1526 | 129 | $15,441 | $120 | premium | 1.7% | (727) 725-5060 |
| 97 | CMC DEPARTMENT OF MEDICINE GROUP PA | CAMDEN | NJ | NURSE PRACTITIONER | 474 | 129 | $12,835 | $99 | premium | 3.6% | — |
| 98 | LUMINIS HEALTH MEDICAL GROUP, LLC | ANNAPOLIS | MD | PHYSICIAN ASSISTANT | 544 | 127 | $7,620 | $60 | premium | 3.9% | (443) 481-1000 |
| 99 | ATHAR M. ANSARI M D INC. | EL CENTRO | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 2 | 126 | $8,190 | $65 | premium | 1.6% | (760) 353-3222 |
| 100 | WAKEMED SPECIALISTS GROUP LLC | RALEIGH | NC | PHYSICIAN ASSISTANT | 860 | 125 | $15,250 | $122 | premium | 7.3% | (919) 350-7270 |
Showing the top 100 of 283 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 →