32557 — Drainage of fluid from chest cavity with insertion of indwelling tube using imaging guidance
4,423 observed fee-for-service (51%) · ~4,273 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 | 32557 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | MEDICAL SPECIALISTS OF MADISON COUNTY PC | ANDERSON | IN | CRITICAL CARE (INTENSIVISTS) | 4 | 118 | $94,400 | $800 | premium | 42.3% | (765) 643-6012 |
| 2 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 109 | $94,572 | $868 | premium | 14.5% | — |
| 3 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 89 | $145,904 | $1,639 | premium | 76.7% | (507) 284-2511 |
| 4 | MORI BEAN AND BROOKS INC | ORANGE PARK | FL | DIAGNOSTIC RADIOLOGY | 947 | 85 | $122,592 | $1,442 | premium | 12.6% | (904) 399-5550 |
| 5 | RADIOLOGY INC | HUNTINGTON | WV | DIAGNOSTIC RADIOLOGY | 28 | 80 | $62,914 | $786 | premium | 70.8% | (304) 526-1140 |
| 6 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 71 | $28,187 | $397 | premium | 25.4% | (812) 422-3254 |
| 7 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 68 | $118,252 | $1,739 | premium | 32.2% | (314) 747-3000 |
| 8 | HARVARD MEDICAL FACULTY PHYS AT BETH ISRAEL DEACONESS MED CTR INC | BOSTON | MA | INTERNAL MEDICINE | 1689 | 68 | $33,741 | $496 | premium | 37.4% | (781) 983-9088 |
| 9 | SONORAN RADIOLOGY LTD | MESA | AZ | DIAGNOSTIC RADIOLOGY | 474 | 68 | $200,376 | $2,947 | premium | 18.3% | (832) 915-2534 |
| 10 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 62 | $242,968 | $3,919 | premium | 9.7% | (916) 983-7476 |
| 11 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 61 | $37,696 | $618 | premium | 19.7% | — |
| 12 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 58 | $57,146 | $985 | premium | 22.9% | (817) 321-0470 |
| 13 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 58 | $27,260 | $470 | premium | 28.6% | (757) 466-6870 |
| 14 | BAYSTATE MEDICAL PRACTICES INC | SPRINGFIELD | MA | PHYSICIAN ASSISTANT | 1326 | 57 | $24,810 | $435 | premium | 31.3% | — |
| 15 | RADIOLOGIC CENTER INC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 20 | 56 | $46,107 | $823 | premium | 44.4% | (402) 390-0606 |
| 16 | RADIOLOGY OF HUNSTVILLE PC | HUNTSVILLE | AL | DIAGNOSTIC RADIOLOGY | 63 | 54 | $35,625 | $660 | premium | 100.0% | 2565390457145 |
| 17 | RADIOLOGY ASSOCIATES OF PENSACOLA PA | PENSACOLA | FL | DIAGNOSTIC RADIOLOGY | 21 | 49 | $24,500 | $500 | premium | 7.3% | (850) 208-6000 |
| 18 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 48 | $20,204 | $421 | premium | 34.0% | — |
| 19 | PENSACOLA LUNG GROUP, M.D.'S, P.A. | PENSACOLA | FL | NURSE PRACTITIONER | 26 | 48 | $21,745 | $453 | premium | 7.1% | (850) 477-9253 |
| 20 | HRMC, LLC | LAKE HAVASU CITY | AZ | NURSE PRACTITIONER | 32 | 48 | $54,096 | $1,127 | premium | 12.9% | (928) 453-3761 |
| 21 | ARKANSAS HEALTH GROUP | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 666 | 46 | $105,156 | $2,286 | premium | 23.2% | (501) 202-2093 |
| 22 | WEILL MEDICAL COLLEGE OF CORNELL | NEW YORK | NY | INTERNAL MEDICINE | 2053 | 46 | $104,660 | $2,275 | premium | 6.1% | (212) 746-5454 |
| 23 | X-RAY ASSOCIATES OF LOUISVILLE PSC | LOUISVILLE | KY | DIAGNOSTIC RADIOLOGY | 55 | 45 | $47,302 | $1,051 | premium | 30.4% | (502) 897-8121 |
| 24 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 44 | $176,373 | $4,008 | premium | 6.9% | (650) 723-4000 |
| 25 | DIAGNOSTIC IMAGING ASSOCIATES, P.C. | DES MOINES | IA | DIAGNOSTIC RADIOLOGY | 21 | 43 | $25,671 | $597 | premium | 35.2% | (515) 643-2667 |
| 26 | WESTCHESTER MEDICAL CENTER ADVANCED PHYSICIAN SERVICES PC | VALHALLA | NY | DIAGNOSTIC RADIOLOGY | 875 | 43 | $25,603 | $595 | premium | 5.7% | — |
| 27 | SANFORD CLINIC | SIOUX FALLS | SD | DIAGNOSTIC RADIOLOGY | 276 | 43 | $95,030 | $2,210 | premium | 30.9% | (605) 328-8700 |
| 28 | UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL | CHAPEL HILL | MD | NURSE PRACTITIONER | 2120 | 42 | $31,558 | $751 | premium | 17.1% | (984) 215-5556 |
| 29 | MISSION HEALTH COMMUNITY MULTISPECIALTY PROVIDERS LLC | ASHEVILLE | NC | PHYSICIAN ASSISTANT | 593 | 41 | $22,427 | $547 | premium | 24.3% | (828) 213-1740 |
| 30 | TEMPLE FACULTY PRACTICE PLAN INC | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 1330 | 40 | $24,080 | $602 | premium | 7.0% | — |
| 31 | SANFORD MEDICAL CENTER FARGO | FARGO | ND | NURSE PRACTITIONER | 1198 | 38 | $78,394 | $2,063 | premium | 32.5% | (701) 234-2000 |
| 32 | JOHNS HOPKINS UNIVERSITY | BALTIMORE | DC | INTERNAL MEDICINE | 720 | 38 | $154,047 | $4,054 | premium | 56.7% | (410) 550-0100 |
| 33 | AVERA MCKENNAN | SIOUX FALLS | SD | NURSE PRACTITIONER | 964 | 38 | $5,199 | $137 | premium | 27.3% | (605) 322-5180 |
| 34 | REGIONAL HEALTH SERVICES INC | ERIE | PA | PHYSICIAN ASSISTANT | 588 | 37 | $38,000 | $1,027 | premium | 6.5% | — |
| 35 | MEDICAL IMAGING OF LEHIGH VALLEY PC | ALLENTOWN | PA | DIAGNOSTIC RADIOLOGY | 119 | 37 | $25,650 | $693 | premium | 6.5% | (610) 770-1606 |
| 36 | LAKELAND RADIOLOGISTS P A | FLOWOOD | MS | DIAGNOSTIC RADIOLOGY | 29 | 35 | $87,850 | $2,510 | premium | 24.5% | (601) 936-2390 |
| 37 | CENTRAL KENTUCKY RADIOLOGY PLLC | LEXINGTON | KY | DIAGNOSTIC RADIOLOGY | 56 | 34 | $12,920 | $380 | premium | 23.0% | (859) 313-1000 |
| 38 | ST JUDE RADIOLOGY MEDICAL GROUP INC | FULLERTON | CA | DIAGNOSTIC RADIOLOGY | 61 | 34 | $22,575 | $664 | premium | 5.3% | 71499230001805 |
| 39 | MISSOURI BAPTIST PHYSICIAN SERVICES LLC | SAINT LOUIS | MO | HEMATOLOGY/ONCOLOGY | 25 | 33 | $46,515 | $1,410 | premium | 15.6% | (314) 996-5544 |
| 40 | INDEPENDENT LUNG ASSOCIATES, PA | MELBOURNE | FL | NURSE PRACTITIONER | 18 | 32 | $9,600 | $300 | premium | 4.7% | 3217277992114 |
| 41 | LAHEY CLINIC INC | BURLINGTON | MA | NURSE PRACTITIONER | 1400 | 32 | $21,648 | $676 | premium | 17.6% | — |
| 42 | RADIOLOGY ASSOCIATES OF MACON PC | MACON | GA | DIAGNOSTIC RADIOLOGY | 65 | 31 | $55,441 | $1,788 | premium | 22.0% | (478) 633-1235 |
| 43 | FLORIDA RADIOLOGY CONSULTANTS P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 67 | 30 | $14,310 | $477 | premium | 4.4% | (239) 938-3571 |
| 44 | MIDDLETOWN MEDICAL PC | MIDDLETOWN | NY | NURSE PRACTITIONER | 172 | 30 | $9,000 | $300 | premium | 4.0% | (845) 342-4774 |
| 45 | MOUNT SINAI VASCULAR INSTITUTE, LLC | MIAMI | FL | VASCULAR SURGERY | 13 | 29 | $17,922 | $618 | premium | 4.3% | (305) 674-2906 |
| 46 | EAST VALLEY RADIOLOGY ASSOCIATES PLLC | CHANDLER | AZ | DIAGNOSTIC RADIOLOGY | 31 | 29 | $26,622 | $918 | premium | 7.8% | (480) 728-3000 |
| 47 | CHRISTIANA CARE HEALTH SERVICES INC | NEWARK | DE | PHYSICIAN ASSISTANT | 1537 | 28 | $15,034 | $537 | premium | 100.0% | — |
| 48 | RADIOLOGY PHYSICIANS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 61 | 28 | $20,280 | $724 | premium | 16.3% | (937) 208-8000 |
| 49 | STATE UNIVERSITY OF IOWA | IOWA CITY | IA | PHYSICIAN ASSISTANT | 1902 | 27 | $84,194 | $3,118 | premium | 22.1% | (319) 678-8201 |
| 50 | EAST POST ROAD MEDICAL SERVICES PC | WHITE PLAINS | NY | PHYSICIAN ASSISTANT | 406 | 27 | $16,191 | $600 | premium | 3.6% | (914) 681-0600 |
| 51 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 27 | $91,595 | $3,392 | premium | 4.0% | (904) 953-2000 |
| 52 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 27 | $14,819 | $549 | premium | 7.0% | (973) 971-6866 |
| 53 | EMPIRE STATE RADIOLOGY P C | PORT JERVIS | NY | DIAGNOSTIC RADIOLOGY | 280 | 27 | $78,408 | $2,904 | premium | 3.6% | (718) 223-4685 |
| 54 | SONORAN RADIOLOGY LTD | MESA | MO | DIAGNOSTIC RADIOLOGY | 474 | 27 | $78,408 | $2,904 | premium | 12.8% | (832) 915-2534 |
| 55 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 27 | $14,420 | $534 | premium | 11.0% | (888) 972-9700 |
| 56 | UNIVERSITY OF PITTSBURGH PHYSICIANS | PITTSBURGH | MI | DIAGNOSTIC RADIOLOGY | 4291 | 26 | $19,768 | $760 | premium | 33.8% | — |
| 57 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 26 | $120,177 | $4,622 | premium | 15.4% | (919) 684-8111 |
| 58 | RADIOLOGY ASSOCIATES OF CLEARWATER | CLEARWATER | NY | DIAGNOSTIC RADIOLOGY | 53 | 26 | $22,484 | $865 | premium | 3.5% | (727) 441-3711 |
| 59 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 26 | $26,390 | $1,015 | premium | 8.4% | — |
| 60 | STATE OF MISSISSIPPI - UNIVERSITY OF MISSISSIPPI MEDICAL CENTER | JACKSON | MS | NURSE PRACTITIONER | 951 | 26 | $9,646 | $371 | premium | 18.2% | (601) 815-4775 |
| 61 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 25 | $102,550 | $4,102 | premium | 3.9% | (916) 681-8852 |
| 62 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 103 | 25 | $29,447 | $1,178 | premium | 9.9% | (281) 206-9020 |
| 63 | EMPIRE STATE RADIOLOGY P C | PORT JERVIS | FL | DIAGNOSTIC RADIOLOGY | 280 | 25 | $87,120 | $3,485 | premium | 3.7% | (718) 223-4685 |
| 64 | FLORIDA CANCER SPECIALISTS AND RESEARCH INSTITUTE, LLC | FORT MYERS | FL | HEMATOLOGY/ONCOLOGY | 437 | 25 | $11,600 | $464 | premium | 3.7% | (239) 561-9622 |
| 65 | RADIOLOGISTS PA | FORT SMITH | AR | DIAGNOSTIC RADIOLOGY | 19 | 24 | $15,600 | $650 | premium | 12.1% | (479) 474-1616 |
| 66 | THE CHARLOTTE-MECKLENBURG HOSPITAL AUTHORITY | CONCORD | NC | PHYSICIAN ASSISTANT | 600 | 24 | $45,816 | $1,909 | premium | 14.2% | (704) 403-3000 |
| 67 | AVERA MCKENNAN | SIOUX FALLS | WA | NURSE PRACTITIONER | 964 | 24 | $4,402 | $183 | premium | 20.3% | (605) 322-5180 |
| 68 | HEALTH FIRST MEDICAL GROUP, LLC | MELBOURNE | FL | NURSE PRACTITIONER | 669 | 23 | $74,520 | $3,240 | premium | 3.4% | (321) 434-8878 |
| 69 | UNIVERSITY RADIOLOGY GROUP LLC | EAST BRUNSWICK | NJ | DIAGNOSTIC RADIOLOGY | 244 | 23 | $17,160 | $746 | premium | 5.9% | 73239000402022 |
| 70 | TOLEDO RADIOLOGICAL ASSOCIATES INC | COLDWATER | OH | DIAGNOSTIC RADIOLOGY | 51 | 23 | $10,534 | $458 | premium | 13.4% | (517) 279-5400 |
| 71 | CALIFORNIA MANAGED IMAGING MEDICAL GROUP INC | SANTA BARBARA | CA | DIAGNOSTIC RADIOLOGY | 64 | 22 | $60,988 | $2,772 | premium | 3.4% | (800) 841-4236 |
| 72 | COMMUNITY HOSPITAL OF THE MONTEREY PENINSULA | MONTEREY | CA | EMERGENCY MEDICINE | 141 | 22 | $22,838 | $1,038 | premium | 3.4% | (831) 624-5311 |
| 73 | EAST POST ROAD MEDICAL SERVICES PC | WHITE PLAINS | PA | PHYSICIAN ASSISTANT | 406 | 21 | $12,204 | $581 | premium | 3.7% | (914) 681-0600 |
| 74 | BAPTIST MEMORIAL MEDICAL GROUP, INC. | MEMPHIS | MS | NURSE PRACTITIONER | 549 | 21 | $28,854 | $1,374 | premium | 14.7% | (901) 226-3882 |
| 75 | FLORIDA HOSPITAL PHYSICIAN GROUP INC | TAMPA | FL | DIAGNOSTIC RADIOLOGY | 891 | 21 | $18,900 | $900 | premium | 3.1% | (813) 615-7075 |
| 76 | JAMAICA HOSPITAL | JAMAICA | NY | DIAGNOSTIC RADIOLOGY | 250 | 21 | $9,853 | $469 | premium | 2.8% | (718) 206-6000 |
| 77 | LIMA MEMORIAL PROFESSIONAL CORPORATION | LIMA | OH | PHYSICIAN ASSISTANT | 169 | 21 | $8,517 | $406 | premium | 12.2% | (419) 998-4575 |
| 78 | NORTHWEST IOWA HOSPITAL CORPORATION | SIOUX CITY | SD | NURSE PRACTITIONER | 117 | 21 | $38,131 | $1,816 | premium | 15.1% | (712) 279-3500 |
| 79 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 20 | $57,577 | $2,879 | premium | 3.1% | (858) 455-9100 |
| 80 | DIAGNOSTIC IMAGING ASSOCIATES, P.C. | DES MOINES | TX | DIAGNOSTIC RADIOLOGY | 21 | 20 | $11,940 | $597 | premium | 7.9% | (515) 643-2667 |
| 81 | SJHMC PHYSICIAN SERVICES | PHOENIX | AZ | NURSE PRACTITIONER | 690 | 20 | $10,344 | $517 | premium | 5.4% | (602) 406-6017 |
| 82 | STONY BROOK INTERNISTS UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | HOSPITALIST | 414 | 19 | $43,700 | $2,300 | premium | 2.5% | (631) 444-1560 |
| 83 | UNIVERSITY OF VERMONT MEDICAL CENTER INC | BURLINGTON | VT | PHYSICIAN ASSISTANT | 1194 | 19 | $57,196 | $3,010 | premium | 40.4% | (802) 847-0000 |
| 84 | INTEGRIS AMBULATORY CARE CORPORATION | OKLAHOMA CITY | OK | PHYSICIAN ASSISTANT | 698 | 18 | $5,706 | $317 | premium | 8.7% | (405) 751-5555 |
| 85 | NEWPORT HARBOR RADIOLOGY ASSOCIATES MEDICAL GROUP INC | IRVINE | NJ | DIAGNOSTIC RADIOLOGY | 66 | 18 | $9,666 | $537 | premium | 4.7% | (949) 557-0720 |
| 86 | CAROLINA RADIOLOGY ASSOCIATES LLC | MYRTLE BEACH | SC | DIAGNOSTIC RADIOLOGY | 63 | 18 | $7,884 | $438 | premium | 12.8% | (843) 692-1916 |
| 87 | RADIOLOGY ASSOCIATES OF SOUTHWEST LOUISIANA | ALEXANDRIA | LA | DIAGNOSTIC RADIOLOGY | 94 | 18 | $52,272 | $2,904 | premium | 19.4% | (318) 473-3000 |
| 88 | CONCORD RADIOLOGY PLLC | WICHITA | OK | DIAGNOSTIC RADIOLOGY | 183 | 17 | $7,429 | $437 | premium | 8.2% | (855) 687-7237 |
| 89 | RADIOLOGY ASSOCIATES OF NORTHERN KENTUCKY PLLC | EDGEWOOD | KY | DIAGNOSTIC RADIOLOGY | 56 | 17 | $9,146 | $538 | premium | 11.5% | (859) 301-2160 |
| 90 | CHRISTUS TRINITY CLINIC | TYLER | TX | NURSE PRACTITIONER | 1495 | 17 | $18,700 | $1,100 | premium | 6.7% | (903) 606-5560 |
| 91 | MEDSTAR MEDICAL GROUP II LLC | WASHINGTON | NE | PHYSICIAN ASSISTANT | 3707 | 17 | $6,580 | $387 | premium | 13.5% | (202) 429-2401 |
| 92 | DIAGNOSTIC IMAGING SERVICES LLC | HAGERSTOWN | MD | DIAGNOSTIC RADIOLOGY | 17 | 16 | $4,250 | $266 | premium | 6.5% | (301) 714-4200 |
| 93 | MERCY HOSPITAL OKLAHOMA CITY, INC | OKLAHOMA CITY | OK | INTERVENTIONAL CARDIOLOGY | 42 | 16 | $5,104 | $319 | premium | 7.7% | — |
| 94 | TOWER HEALTH MEDICAL GROUP | WEST READING | PA | INTERNAL MEDICINE | 590 | 16 | $17,792 | $1,112 | premium | 2.8% | (484) 628-5455 |
| 95 | INLET PULMONARY CRITICAL CARE AND SLEEP MEDICINE, PA | MURRELLS INLET | SC | NURSE PRACTITIONER | 6 | 16 | $5,440 | $340 | premium | 11.3% | 84365248001230 |
| 96 | DIAGNOSTIC RADIOLOGY ASSOCIATES LLC | WATERBURY | CT | DIAGNOSTIC RADIOLOGY | 23 | 16 | $9,612 | $601 | premium | 100.0% | 2035969793254 |
| 97 | METHODIST ASSOCIATES IN HEALTHCARE, INC | PHILADELPHIA | DC | DIAGNOSTIC RADIOLOGY | 398 | 16 | $31,090 | $1,943 | premium | 23.9% | (215) 955-6161 |
| 98 | VALLEY INTENSIVISTS, PULMONOLOGISTS AND SLEEP SPECIALISTS, P.L.L.C. | MCALLEN | TX | PULMONARY DISEASE | 5 | 16 | $12,800 | $800 | premium | 6.3% | (956) 688-6300 |
| 99 | FPA HOSPITAL BASED | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 427 | 16 | $34,000 | $2,125 | premium | 2.1% | (212) 252-6004 |
| 100 | PARLEE AND TATEM RADIOLOGIC ASSOCIATES LTD | DOYLESTOWN | PA | DIAGNOSTIC RADIOLOGY | 15 | 16 | $7,360 | $460 | premium | 2.8% | (215) 345-2290 |
Showing the top 100 of 156 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 →