49,715 observed fee-for-service (49%) · ~51,102 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; 2 states without payer-mix data excluded. 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 | 78306 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 | PHYSICIANS REFERRAL SERVICE | HOUSTON | TX | NURSE PRACTITIONER | 2696 | 2,917 | $1,040,665 | $357 | premium | 27.0% | (713) 592-5433 |
| 2 | CENTRAL ARKANSAS RADIATION THERAPY INSTITUTE INC | LITTLE ROCK | AR | HEMATOLOGY/ONCOLOGY | 90 | 1,184 | $1,317,127 | $1,112 | premium | 46.9% | — |
| 3 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 966 | $161,438 | $167 | premium | 8.9% | (817) 321-0470 |
| 4 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 921 | $191,568 | $208 | premium | 19.6% | (919) 684-8111 |
| 5 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 906 | $673,726 | $744 | premium | 13.1% | (904) 953-2000 |
| 6 | CITY OF HOPE MEDICAL FOUNDATION | DUARTE | CA | NURSE PRACTITIONER | 942 | 773 | $120,878 | $156 | premium | 11.1% | (626) 256-4673 |
| 7 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 769 | $208,258 | $271 | premium | 16.4% | (704) 362-1945 |
| 8 | OSU RADIOLOGY LLC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 174 | 630 | $100,800 | $160 | premium | 15.4% | (614) 293-8315 |
| 9 | THE ASSOCIATION OF UNIVERSITY PHYSICIANS | SEATTLE | WA | PHYSICIAN ASSISTANT | 3612 | 621 | $90,194 | $145 | premium | 23.9% | (206) 364-0500 |
| 10 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 490 | $63,210 | $129 | premium | 12.9% | (757) 466-6870 |
| 11 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 462 | $64,680 | $140 | premium | 12.1% | (804) 288-8327 |
| 12 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 459 | $97,832 | $213 | premium | 9.2% | — |
| 13 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 442 | $76,185 | $172 | premium | 14.4% | (617) 724-0287 |
| 14 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 409 | $69,533 | $170 | premium | 14.7% | (616) 363-7272 |
| 15 | UT PHYSICIANS | HOUSTON | TX | NURSE PRACTITIONER | 1758 | 386 | $112,050 | $290 | premium | 3.6% | (713) 566-5000 |
| 16 | KANSAS UNIVERSITY PHYSICIANS INC | KANSAS CITY | KS | NURSE PRACTITIONER | 1815 | 385 | $38,534 | $100 | premium | 31.1% | (913) 588-1227 |
| 17 | TEMPLE FACULTY PRACTICE PLAN INC | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 1330 | 375 | $56,250 | $150 | premium | 7.3% | — |
| 18 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 372 | $443,808 | $1,193 | premium | 20.6% | (800) 603-0558 |
| 19 | RADIOLOGISTS OF UNIV OF ROCHESTER | ROCHESTER | NY | DIAGNOSTIC RADIOLOGY | 134 | 363 | $63,525 | $175 | premium | 6.0% | — |
| 20 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 361 | $245,997 | $681 | premium | 5.9% | (212) 263-9700 |
| 21 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 346 | $54,393 | $157 | premium | 7.4% | (252) 752-5000 |
| 22 | OU HEALTH PARTNERS INC | OKLAHOMA CITY | OK | PHYSICIAN ASSISTANT | 1160 | 343 | $58,641 | $171 | premium | 26.1% | (405) 271-4311 |
| 23 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 342 | $333,859 | $976 | premium | 4.9% | (916) 681-8852 |
| 24 | HAMPTON ROADS RADIOLOGY ASSOCIATES PC | VIRGINIA BEACH | VA | DIAGNOSTIC RADIOLOGY | 37 | 327 | $48,723 | $149 | premium | 8.6% | (757) 916-9630 |
| 25 | FPA HOSPITAL BASED | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 427 | 317 | $49,003 | $155 | premium | 5.2% | (212) 252-6004 |
| 26 | LAKE MEDICAL IMAGING AND BREAST CENTER AT THE VILLAGES LLC | LEESBURG | FL | DIAGNOSTIC RADIOLOGY | 22 | 311 | $248,178 | $798 | premium | 4.5% | (352) 787-5858 |
| 27 | INNOVATIVE RADIOLOGY PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 31 | 308 | $222,046 | $721 | premium | 2.9% | (713) 797-1919 |
| 28 | UNIVERSITY PHYSICIANS INCORPORATED | AURORA | CO | PHYSICIAN ASSISTANT | 3122 | 306 | $51,714 | $169 | premium | 20.1% | (720) 777-1234 |
| 29 | ARKANSAS HEALTH GROUP | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 666 | 305 | $46,058 | $151 | premium | 12.1% | (501) 202-2093 |
| 30 | ROSWELL PARK CANCER INSTITUTE | BUFFALO | NY | NURSE PRACTITIONER | 502 | 300 | $116,598 | $389 | premium | 4.9% | (716) 845-2300 |
| 31 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 296 | $51,666 | $175 | premium | 9.7% | (617) 732-5500 |
| 32 | SDMI, LLC | LAS VEGAS | NV | DIAGNOSTIC RADIOLOGY | 36 | 292 | $230,158 | $788 | premium | 39.8% | (702) 732-6000 |
| 33 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 243 | 289 | $55,488 | $192 | premium | 7.1% | (614) 566-5600 |
| 34 | BEAUMONT MEDICAL GROUP- SPECIALTY SERVICES | ROYAL OAK | MI | PHYSICIAN ASSISTANT | 833 | 285 | $183,523 | $644 | premium | 10.2% | (248) 898-5058 |
| 35 | ROPER RADIOLOGISTS PA | CHARLESTON | SC | DIAGNOSTIC RADIOLOGY | 40 | 278 | $101,192 | $364 | premium | 18.3% | (843) 724-2161 |
| 36 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 274 | $38,360 | $140 | premium | 8.0% | (973) 971-6866 |
| 37 | RUSH UNIVERSITY MEDICAL GROUP | CHICAGO | IL | PHYSICIAN ASSISTANT | 1496 | 268 | $38,480 | $144 | premium | 5.4% | (312) 563-2875 |
| 38 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 262 | $33,012 | $126 | premium | 5.6% | (704) 332-1291 |
| 39 | DRS HARRIS BIRKHILL WANG SONGE AND ASSOC PC | DEARBORN | MI | DIAGNOSTIC RADIOLOGY | 62 | 260 | $30,420 | $117 | premium | 9.3% | (313) 593-7301 |
| 40 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 255 | $60,180 | $236 | premium | 9.0% | (314) 747-3000 |
| 41 | SPECTRUM HEALTHCARE PARTNERS PA | PORTLAND | ME | DIAGNOSTIC RADIOLOGY | 281 | 252 | $32,760 | $130 | premium | 77.5% | (207) 828-2160 |
| 42 | QUANTUM RADIOLOGY PC | MARIETTA | GA | DIAGNOSTIC RADIOLOGY | 104 | 248 | $51,336 | $207 | premium | 12.7% | (770) 732-4000 |
| 43 | PROGRESSIVE PHYSICIAN ASSOC INC | PHILLIPSBURG | PA | DIAGNOSTIC RADIOLOGY | 160 | 248 | $39,432 | $159 | premium | 4.9% | (908) 859-6700 |
| 44 | RADIOLOGY PHYSICIANS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 61 | 244 | $36,844 | $151 | premium | 6.0% | (937) 208-8000 |
| 45 | REGENTS OF THE UNIVERSITY OF MICHIGAN | ANN ARBOR | MI | INTERNAL MEDICINE | 3330 | 240 | $63,600 | $265 | premium | 8.6% | (734) 763-5459 |
| 46 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 240 | $156,022 | $650 | premium | 11.0% | (888) 972-9700 |
| 47 | UMASS MEMORIAL MEDICAL GROUP INC | WORCESTER | MA | PHYSICIAN ASSISTANT | 2483 | 238 | $47,838 | $201 | premium | 7.8% | (508) 334-1000 |
| 48 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 228 | $38,988 | $171 | premium | 12.1% | (812) 422-3254 |
| 49 | PENINSULA RADIOLOGICAL ASSOCIATES LIMITED | NEWPORT NEWS | VA | DIAGNOSTIC RADIOLOGY | 65 | 227 | $29,964 | $132 | premium | 6.0% | (757) 594-3900 |
| 50 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 227 | $99,761 | $439 | premium | 3.7% | (631) 225-7200 |
| 51 | YALE UNIVERSITY | NEW HAVEN | CT | PHYSICIAN ASSISTANT | 2649 | 223 | $40,140 | $180 | premium | 17.3% | (203) 688-4242 |
| 52 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 103 | 214 | $74,802 | $350 | premium | 2.0% | (281) 206-9020 |
| 53 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 212 | $45,538 | $215 | premium | 3.1% | (858) 455-9100 |
| 54 | BAY IMAGING CONSULTANTS MEDICAL GROUP INC | WALNUT CREEK | OH | DIAGNOSTIC RADIOLOGY | 134 | 210 | $138,600 | $660 | premium | 5.1% | (925) 947-5320 |
| 55 | RADIOLOGY ASSOCIATES OF ABILENE PA | ABILENE | TX | DIAGNOSTIC RADIOLOGY | 25 | 210 | $31,500 | $150 | premium | 1.9% | (325) 670-2000 |
| 56 | UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL CENTER AT DALLAS | DALLAS | TX | PHYSICIAN ASSISTANT | 3200 | 206 | $29,252 | $142 | premium | 1.9% | (214) 633-5555 |
| 57 | COOPER UNIVERSITY RADIOLOGY PC | CAMDEN | NJ | DIAGNOSTIC RADIOLOGY | 68 | 203 | $27,202 | $134 | premium | 5.9% | — |
| 58 | RHODE ISLAND MEDICAL IMAGING INC | EAST PROVIDENCE | RI | DIAGNOSTIC RADIOLOGY | 109 | 195 | $33,150 | $170 | premium | 68.2% | (401) 626-3900 |
| 59 | UNIVERSITY OF VIRGINIA PHYSICIANS GROUP | CHARLOTTESVILLE | VA | NURSE PRACTITIONER | 1704 | 192 | $23,640 | $123 | premium | 5.0% | (434) 924-5959 |
| 60 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 190 | $248,900 | $1,310 | premium | 2.7% | (650) 723-4000 |
| 61 | TOLEDO RADIOLOGICAL ASSOCIATES INC | COLDWATER | OH | DIAGNOSTIC RADIOLOGY | 51 | 190 | $23,538 | $124 | premium | 4.6% | (517) 279-5400 |
| 62 | CLEVELAND CLINIC HEALTH SERVICES PROFESSIONAL ASSOCIATION, INC | FRISCO | OR | DIAGNOSTIC RADIOLOGY | 60 | 188 | $66,579 | $354 | premium | 13.0% | (630) 235-2454 |
| 63 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 183 | $23,058 | $126 | premium | 12.1% | — |
| 64 | RADIOLOGY AND MEDICAL IMAGERY OF NEWNAN PC | NEWNAN | GA | DIAGNOSTIC RADIOLOGY | 35 | 181 | $76,704 | $424 | premium | 9.3% | (770) 400-1000 |
| 65 | WEST COUNTY RADIOLOGICAL GROUP INC | SAINT LOUIS | MO | DIAGNOSTIC RADIOLOGY | 104 | 180 | $33,480 | $186 | premium | 6.3% | (314) 941-5600 |
| 66 | DIAGNOSTIC X-RAY PHYSICIANS, PSC | LOUISVILLE | KY | DIAGNOSTIC RADIOLOGY | 36 | 179 | $30,788 | $172 | premium | 11.3% | (502) 893-1000 |
| 67 | VISTA RADIOLOGY, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 68 | 176 | $34,496 | $196 | premium | 7.9% | (865) 546-9484 |
| 68 | STATE UNIVERSITY OF IOWA | IOWA CITY | IA | PHYSICIAN ASSISTANT | 1902 | 171 | $45,685 | $267 | premium | 18.8% | (319) 678-8201 |
| 69 | HURON VALLEY RADIOLOGY PC | YPSILANTI | MI | DIAGNOSTIC RADIOLOGY | 77 | 168 | $22,960 | $137 | premium | 6.0% | (734) 712-8350 |
| 70 | LESTER E COX MEDICAL CENTERS | SPRINGFIELD | MO | PHYSICIAN ASSISTANT | 251 | 167 | $23,848 | $143 | premium | 5.9% | (417) 875-3000 |
| 71 | RADIOLOGY CONSULTANTS PC | OMAHA | MD | DIAGNOSTIC RADIOLOGY | 46 | 165 | $22,935 | $139 | premium | 7.5% | (402) 717-4760 |
| 72 | LOYOLA UNIVERSITY MEDICAL CENTER | MAYWOOD | IL | NURSE PRACTITIONER | 933 | 165 | $30,855 | $187 | premium | 3.3% | (708) 216-8372 |
| 73 | CITY OF HOPE MEDICAL GROUP OF GEORGIA LLC | NEWNAN | GA | NURSE PRACTITIONER | 134 | 164 | $32,472 | $198 | premium | 8.4% | (770) 400-6080 |
| 74 | UNIVERSITY OF CHICAGO | CHICAGO | IL | NURSE PRACTITIONER | 1662 | 163 | $52,231 | $320 | premium | 3.3% | (888) 824-0200 |
| 75 | TOLEDO CLINIC INCORPORATED | TOLEDO | OH | NURSE PRACTITIONER | 217 | 163 | $79,707 | $489 | premium | 4.0% | (419) 874-3246 |
| 76 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 160 | $29,440 | $184 | premium | 1.5% | (254) 724-2663 |
| 77 | SPRINGFIELD CLINIC, LLP | SPRINGFIELD | IL | NURSE PRACTITIONER | 686 | 160 | $137,108 | $857 | premium | 3.2% | (217) 544-6464 |
| 78 | THE MILTON S HERSHEY MEDICAL CENTER PHYSICIANS GROUP | HERSHEY | PA | PHYSICIAN ASSISTANT | 1599 | 158 | $22,983 | $145 | premium | 3.1% | (717) 531-5638 |
| 79 | REGENTS OF THE UNIVERSITY OF CALIFORNIA | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 2057 | 158 | $55,295 | $350 | premium | 2.3% | (800) 926-8273 |
| 80 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | CT | PHYSICIAN ASSISTANT | 6294 | 158 | $33,396 | $211 | premium | 12.2% | — |
| 81 | FLORIDA CLINICAL PRACTICE ASSOCIATION INC | GAINESVILLE | FL | NURSE PRACTITIONER | 1912 | 158 | $36,096 | $228 | premium | 2.3% | (352) 265-8990 |
| 82 | CENTRAL ILLINOIS RADIOLOGICAL ASSOCIATES LTD | PEORIA | IL | DIAGNOSTIC RADIOLOGY | 196 | 155 | $37,200 | $240 | premium | 3.1% | (309) 655-2000 |
| 83 | DARTMOUTH-HITCHCOCK CLINIC | LEBANON | NH | PHYSICIAN ASSISTANT | 1441 | 155 | $111,973 | $722 | premium | 36.2% | (603) 650-5000 |
| 84 | SONORAN RADIOLOGY LTD | MESA | AZ | DIAGNOSTIC RADIOLOGY | 474 | 154 | $101,640 | $660 | premium | 8.5% | (832) 915-2534 |
| 85 | UNIVERSITY PROFESSIONAL SERVICES | PORTLAND | OR | PHYSICIAN ASSISTANT | 1717 | 150 | $16,785 | $112 | premium | 10.3% | (503) 494-8311 |
| 86 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 150 | $28,500 | $190 | premium | 3.7% | — |
| 87 | RADIOLOGY ASSOCIATES LLP | CORPUS CHRISTI | TX | DIAGNOSTIC RADIOLOGY | 15 | 150 | $90,600 | $604 | premium | 1.4% | (361) 887-7000 |
| 88 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 146 | $80,841 | $554 | premium | 2.1% | (239) 936-2316 |
| 89 | MEDSTAR MEDICAL GROUP II LLC | WASHINGTON | DC | PHYSICIAN ASSISTANT | 3707 | 146 | $20,006 | $137 | premium | 24.4% | (202) 429-2401 |
| 90 | KETTERING NETWORK RADIOLOGISTS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 74 | 145 | $24,795 | $171 | premium | 3.5% | (937) 558-3800 |
| 91 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | MI | NURSE PRACTITIONER | 4339 | 145 | $31,555 | $218 | premium | 5.2% | — |
| 92 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 142 | $14,626 | $103 | premium | 2.8% | — |
| 93 | SOUTH SHORE RADIOLOGICAL ASSOCIATES INC | SOUTH WEYMOUTH | MA | DIAGNOSTIC RADIOLOGY | 36 | 141 | $19,599 | $139 | premium | 4.6% | (781) 340-8000 |
| 94 | PETERSON MEDICAL ASSOCIATES | KERRVILLE | TX | DIAGNOSTIC RADIOLOGY | 188 | 141 | $106,878 | $758 | premium | 1.3% | (830) 258-7090 |
| 95 | COLUMBUS RADIOLOGY CORP | COLUMBUS | PA | DIAGNOSTIC RADIOLOGY | 288 | 138 | $91,080 | $660 | premium | 2.7% | (614) 228-7231 |
| 96 | LAKELAND RADIOLOGISTS P A | FLOWOOD | MS | DIAGNOSTIC RADIOLOGY | 29 | 137 | $28,907 | $211 | premium | 10.2% | (601) 936-2390 |
| 97 | ASSOCIATION OF UNIVERSITY RADIOLOGISTS, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 35 | 136 | $20,400 | $150 | premium | 6.1% | (865) 305-9661 |
| 98 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | IA | NURSE PRACTITIONER | 2232 | 133 | $25,270 | $190 | premium | 14.6% | — |
| 99 | UNIVERSITY OF MIAMI | MIAMI | FL | NURSE PRACTITIONER | 2331 | 133 | $21,280 | $160 | premium | 1.9% | (305) 689-5437 |
| 100 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 62 | 132 | $84,964 | $644 | premium | 6.0% | (888) 601-0943 |
Showing the top 100 of 491 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 →