3,105 observed fee-for-service (48%) · ~3,313 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 | 73723 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 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 209 | $333,956 | $1,598 | premium | 23.8% | (631) 225-7200 |
| 2 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 144 | $37,296 | $259 | premium | 52.0% | (616) 363-7272 |
| 3 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 96 | $105,216 | $1,096 | premium | 37.4% | (800) 603-0558 |
| 4 | SDMI, LLC | LAS VEGAS | NV | DIAGNOSTIC RADIOLOGY | 36 | 95 | $148,960 | $1,568 | premium | 57.9% | (702) 732-6000 |
| 5 | H LEE MOFFITT CANCER CTR AND RES INST LIFE TIME CANCER SCRN CTR INC | TAMPA | FL | PHYSICIAN ASSISTANT | 1103 | 93 | $34,823 | $374 | premium | 10.8% | (813) 745-4673 |
| 6 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 76 | $35,688 | $470 | premium | 20.4% | (617) 732-5500 |
| 7 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 73 | $92,768 | $1,271 | premium | 7.5% | (650) 723-4000 |
| 8 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 72 | $25,128 | $349 | premium | 20.2% | — |
| 9 | THE CURATORS OF THE UNIVERSITY OF MISSOURI | COLUMBIA | MO | PHYSICIAN ASSISTANT | 1116 | 71 | $29,465 | $415 | premium | 18.1% | (573) 882-2667 |
| 10 | RHODE ISLAND MEDICAL IMAGING INC | EAST PROVIDENCE | RI | DIAGNOSTIC RADIOLOGY | 109 | 52 | $82,740 | $1,591 | premium | 75.4% | (401) 626-3900 |
| 11 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 46 | $146,188 | $3,178 | premium | 12.3% | (617) 724-0287 |
| 12 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 45 | $79,973 | $1,777 | premium | 5.2% | (239) 936-2316 |
| 13 | NORTH SHORE HEMATOLOGY ONCOLOGY ASSOCIATES PC | SMITHTOWN | NY | NURSE PRACTITIONER | 462 | 45 | $76,500 | $1,700 | premium | 5.1% | (631) 751-3000 |
| 14 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 42 | $21,567 | $514 | premium | 20.2% | (704) 362-1945 |
| 15 | PHYSICIANS REFERRAL SERVICE | HOUSTON | TX | NURSE PRACTITIONER | 2696 | 41 | $82,502 | $2,012 | premium | 6.5% | (713) 592-5433 |
| 16 | RADIOLOGY IMAGING ASSOCIATES | PORT ST LUCIE | FL | DIAGNOSTIC RADIOLOGY | 11 | 39 | $61,698 | $1,582 | premium | 4.5% | (772) 905-3589 |
| 17 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 39 | $21,684 | $556 | premium | 11.0% | — |
| 18 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | NJ | DIAGNOSTIC RADIOLOGY | 62 | 37 | $58,534 | $1,582 | premium | 13.4% | (888) 601-0943 |
| 19 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | NY | PHYSICIAN ASSISTANT | 2942 | 37 | $17,501 | $473 | premium | 4.2% | (617) 732-5500 |
| 20 | MASS GENERAL BRIGHAM COMMUNITY PHYSICIANS INC | MEDFORD | MA | DIAGNOSTIC RADIOLOGY | 424 | 37 | $14,914 | $403 | premium | 9.9% | (781) 395-4909 |
| 21 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 36 | $9,720 | $270 | premium | 39.1% | — |
| 22 | RADIOLOGY CONSULTANTS PC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 46 | 35 | $12,250 | $350 | premium | 54.7% | (402) 717-4760 |
| 23 | UC REGENTS | ORANGE | CA | DIAGNOSTIC RADIOLOGY | 99 | 35 | $16,555 | $473 | premium | 3.6% | (714) 456-7004 |
| 24 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 34 | $11,118 | $327 | premium | 16.0% | (757) 466-6870 |
| 25 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 33 | $18,300 | $555 | premium | 3.4% | (916) 983-7476 |
| 26 | BEVERLY RADIOLOGY MEDICAL GROUP III | GARDEN GROVE | CA | DIAGNOSTIC RADIOLOGY | 328 | 33 | $52,206 | $1,582 | premium | 3.4% | — |
| 27 | ASSOCIATION OF UNIVERSITY RADIOLOGISTS, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 35 | 33 | $13,056 | $396 | premium | 18.3% | (865) 305-9661 |
| 28 | STATE UNIVERSITY OF IOWA | IOWA CITY | IA | PHYSICIAN ASSISTANT | 1902 | 31 | $17,660 | $570 | premium | 22.0% | (319) 678-8201 |
| 29 | LAHEY CLINIC INC | BURLINGTON | MA | NURSE PRACTITIONER | 1400 | 31 | $14,359 | $463 | premium | 8.3% | — |
| 30 | CITY OF HOPE MEDICAL FOUNDATION | DUARTE | CA | NURSE PRACTITIONER | 942 | 30 | $7,830 | $261 | premium | 3.1% | (626) 256-4673 |
| 31 | KANSAS UNIVERSITY PHYSICIANS INC | KANSAS CITY | KS | NURSE PRACTITIONER | 1815 | 29 | $7,699 | $265 | premium | 44.6% | (913) 588-1227 |
| 32 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 29 | $126,672 | $4,368 | premium | 3.4% | (904) 953-2000 |
| 33 | PROGRESSIVE PHYSICIAN ASSOC INC | PHILLIPSBURG | PA | DIAGNOSTIC RADIOLOGY | 160 | 29 | $11,832 | $408 | premium | 14.1% | (908) 859-6700 |
| 34 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 28 | $91,770 | $3,278 | premium | 10.7% | (507) 284-2511 |
| 35 | HURON VALLEY RADIOLOGY PC | YPSILANTI | MI | DIAGNOSTIC RADIOLOGY | 77 | 28 | $9,824 | $351 | premium | 10.1% | (734) 712-8350 |
| 36 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 27 | $15,429 | $571 | premium | 2.8% | (858) 455-9100 |
| 37 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 27 | $41,446 | $1,535 | premium | 16.3% | (888) 972-9700 |
| 38 | RADIOLOGY ASSOCIATES LLP | CORPUS CHRISTI | TX | DIAGNOSTIC RADIOLOGY | 15 | 27 | $45,900 | $1,700 | premium | 4.3% | (361) 887-7000 |
| 39 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 26 | $7,020 | $270 | premium | 12.3% | (804) 288-8327 |
| 40 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | PR | DIAGNOSTIC RADIOLOGY | 52 | 26 | $5,651 | $217 | premium | 100.0% | (239) 936-2316 |
| 41 | JOHNS HOPKINS UNIVERSITY | BALTIMORE | MD | NURSE PRACTITIONER | 2900 | 26 | $49,081 | $1,888 | premium | 15.7% | (410) 502-4340 |
| 42 | SPARTANBURG MEDICAL CENTER | SPARTANBURG | SC | NURSE PRACTITIONER | 1070 | 26 | $9,000 | $346 | premium | 28.3% | (864) 587-3000 |
| 43 | THE ASSOCIATION OF UNIVERSITY PHYSICIANS | SEATTLE | WA | PHYSICIAN ASSISTANT | 3612 | 26 | $8,253 | $317 | premium | 16.7% | (206) 364-0500 |
| 44 | PARTNERS IMAGING CENTER OF SARASOTA LLC | SARASOTA | FL | DIAGNOSTIC RADIOLOGY | 13 | 26 | $30,297 | $1,165 | premium | 3.0% | (941) 951-2100 |
| 45 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | MI | DIAGNOSTIC RADIOLOGY | 244 | 24 | $8,558 | $357 | premium | 8.7% | (212) 772-3111 |
| 46 | COVENANT MEDICAL CENTER INC | SAGINAW | MI | PHYSICIAN ASSISTANT | 493 | 23 | $6,487 | $282 | premium | 8.3% | (989) 583-4220 |
| 47 | RADIOLOGY OF MSMC, LLC | MIAMI | GA | DIAGNOSTIC RADIOLOGY | 23 | 22 | $12,892 | $586 | premium | 24.2% | (305) 674-3905 |
| 48 | RUSH UNIVERSITY MEDICAL GROUP | CHICAGO | IL | PHYSICIAN ASSISTANT | 1496 | 22 | $7,546 | $343 | premium | 6.2% | (312) 563-2875 |
| 49 | LESTER E COX MEDICAL CENTERS | SPRINGFIELD | MO | PHYSICIAN ASSISTANT | 251 | 21 | $7,484 | $356 | premium | 5.4% | (417) 875-3000 |
| 50 | RADIOLOGY LTD LLC | TUCSON | AZ | DIAGNOSTIC RADIOLOGY | 102 | 21 | $57,927 | $2,758 | premium | 8.2% | (520) 290-4842 |
| 51 | OU HEALTH PARTNERS INC | OKLAHOMA CITY | OK | PHYSICIAN ASSISTANT | 1160 | 21 | $8,260 | $393 | premium | 39.6% | (405) 271-4311 |
| 52 | TOLEDO RADIOLOGICAL ASSOCIATES INC | COLDWATER | OH | DIAGNOSTIC RADIOLOGY | 51 | 21 | $6,615 | $315 | premium | 7.1% | (517) 279-5400 |
| 53 | PALM DESERT RADIOLOGY MEDICAL GROUP INC | RANCHO MIRAGE | CA | DIAGNOSTIC RADIOLOGY | 125 | 21 | $21,273 | $1,013 | premium | 2.2% | (760) 773-1251 |
| 54 | LAKE MEDICAL IMAGING AND BREAST CENTER AT THE VILLAGES LLC | LEESBURG | FL | DIAGNOSTIC RADIOLOGY | 22 | 21 | $24,801 | $1,181 | premium | 2.4% | (352) 787-5858 |
| 55 | ADVANCED BERKSHIRE MEDICAL IMAGING PC | PITTSFIELD | NY | DIAGNOSTIC RADIOLOGY | 11 | 20 | $7,200 | $360 | premium | 2.3% | (413) 447-2451 |
| 56 | VISTA RADIOLOGY, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 68 | 20 | $9,640 | $482 | premium | 11.1% | (865) 546-9484 |
| 57 | HARVARD MEDICAL FACULTY PHYS AT BETH ISRAEL DEACONESS MED CTR INC | BOSTON | MA | INTERNAL MEDICINE | 1689 | 20 | $6,860 | $343 | premium | 5.4% | (781) 983-9088 |
| 58 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 19 | $25,299 | $1,332 | premium | 2.2% | (914) 241-1050 |
| 59 | ENLOE MEDICAL CENTER | CHICO | MN | DIAGNOSTIC RADIOLOGY | 362 | 19 | $4,313 | $227 | premium | 7.3% | (530) 332-4470 |
| 60 | DIAGNOSTIC IMAGING CENTERS PA | KANSAS CITY | MO | DIAGNOSTIC RADIOLOGY | 28 | 18 | $30,532 | $1,696 | premium | 4.6% | (816) 444-9989 |
| 61 | ADVANCED RADIOLOGY P A | BALTIMORE | DC | DIAGNOSTIC RADIOLOGY | 161 | 18 | $28,476 | $1,582 | premium | 29.5% | (888) 972-9700 |
| 62 | RADIOLOGY CONSULTANTS PC | OMAHA | TX | DIAGNOSTIC RADIOLOGY | 46 | 17 | $5,950 | $350 | premium | 2.7% | (402) 717-4760 |
| 63 | SELF MEDICAL GROUP | GREENWOOD | SC | NURSE PRACTITIONER | 400 | 17 | $3,604 | $212 | premium | 18.5% | — |
| 64 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 16 | $45,154 | $2,822 | premium | 1.6% | (916) 681-8852 |
| 65 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 103 | 16 | $11,740 | $734 | premium | 2.5% | (281) 206-9020 |
| 66 | DARTMOUTH-HITCHCOCK CLINIC | LEBANON | NH | PHYSICIAN ASSISTANT | 1441 | 16 | $25,998 | $1,625 | premium | 29.6% | (603) 650-5000 |
| 67 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 16 | $5,488 | $343 | premium | 1.8% | (212) 263-9700 |
| 68 | COLUMBUS RADIOLOGY CORP | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 288 | 15 | $22,665 | $1,511 | premium | 5.1% | (614) 228-7231 |
| 69 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 15 | $5,325 | $355 | premium | 5.1% | — |
| 70 | MEDICAL ASSOCIATES OF NORTHWEST ARKANSAS, PA | FAYETTEVILLE | AR | FAMILY PRACTICE | 106 | 15 | $4,367 | $291 | premium | 17.0% | (479) 521-0200 |
| 71 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 15 | $7,908 | $527 | premium | 1.7% | — |
| 72 | SILICON VALLEY MEDICAL IMAGING INC A MEDICAL CORPORATION | FREMONT | CA | NUCLEAR MEDICINE | 3 | 15 | $18,600 | $1,240 | premium | 1.5% | (510) 792-9700 |
| 73 | RADIOLOGY ASSOCIATES OF ABILENE PA | ABILENE | TX | DIAGNOSTIC RADIOLOGY | 25 | 15 | $5,520 | $368 | premium | 2.4% | (325) 670-2000 |
| 74 | SAINT AGNES MEDICAL FOUNDATION | FRESNO | OH | INTERNAL MEDICINE | 155 | 14 | $4,676 | $334 | premium | 4.7% | (559) 450-5777 |
| 75 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 14 | $4,984 | $356 | premium | 21.5% | (812) 422-3254 |
| 76 | STOCKDALE RADIOLOGY PHYSICIANS SERVICES INC | BAKERSFIELD | CA | DIAGNOSTIC RADIOLOGY | 3 | 14 | $14,591 | $1,042 | premium | 1.4% | (661) 631-8000 |
| 77 | INNOVATIVE RADIOLOGY PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 31 | 14 | $27,239 | $1,946 | premium | 2.2% | (713) 797-1919 |
| 78 | PROGRESSIVE PHYSICIAN ASSOC INC | PHILLIPSBURG | NJ | DIAGNOSTIC RADIOLOGY | 160 | 14 | $5,712 | $408 | premium | 5.1% | (908) 859-6700 |
| 79 | MERCY CLINIC SPRINGFIELD COMMUNITIES | SPRINGFIELD | MO | PHYSICIAN ASSISTANT | 1128 | 13 | $5,148 | $396 | premium | 3.3% | — |
| 80 | DIAGNOSTIC IMAGING ASSOCIATES, P.C. | DES MOINES | IA | DIAGNOSTIC RADIOLOGY | 21 | 13 | $5,798 | $446 | premium | 9.2% | (515) 643-2667 |
| 81 | RADIOLOGY CONSULTANTS OF IOWA PLC | CEDAR RAPIDS | OH | DIAGNOSTIC RADIOLOGY | 72 | 13 | $19,643 | $1,511 | premium | 4.4% | (319) 364-0121 |
| 82 | RADIOLOGY CONSULTANTS OF IOWA PLC | CEDAR RAPIDS | IA | DIAGNOSTIC RADIOLOGY | 72 | 13 | $4,476 | $344 | premium | 9.2% | (319) 364-0121 |
| 83 | MEMPHIS RADIOLOGICAL PC | MEMPHIS | TN | DIAGNOSTIC RADIOLOGY | 51 | 13 | $6,110 | $470 | premium | 7.2% | (901) 561-6000 |
| 84 | NEW YORK UNIVERSITY | NEW YORK | TN | DIAGNOSTIC RADIOLOGY | 5704 | 13 | $34,005 | $2,616 | premium | 7.2% | (212) 263-9700 |
| 85 | RADIOLOGY ASSOCIATES OF RIDGEWOOD P A | WALDWICK | NJ | DIAGNOSTIC RADIOLOGY | 20 | 13 | $9,474 | $729 | premium | 4.7% | (201) 445-8822 |
| 86 | SHANNON CLINIC | SAN ANGELO | TX | NURSE PRACTITIONER | 515 | 13 | $3,757 | $289 | premium | 2.0% | (325) 747-1511 |
| 87 | DIAGNOSTIC IMAGING ASSOCIATES LTD | CHESTERFIELD | MO | DIAGNOSTIC RADIOLOGY | 20 | 12 | $2,976 | $248 | premium | 3.1% | (314) 434-1500 |
| 88 | X-RAY ASSOCIATES OF LOUISVILLE PSC | LOUISVILLE | KY | DIAGNOSTIC RADIOLOGY | 55 | 12 | $5,245 | $437 | premium | 16.9% | (502) 897-8121 |
| 89 | YALE UNIVERSITY | NEW HAVEN | CT | PHYSICIAN ASSISTANT | 2649 | 12 | $8,940 | $745 | premium | 14.5% | (203) 688-4242 |
| 90 | MEDICAL SCANNING CONSULTANTS PA | ST LOUIS PARK | FL | DIAGNOSTIC RADIOLOGY | 81 | 12 | $35,992 | $2,999 | premium | 1.4% | (952) 541-1840 |
| 91 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | WA | DIAGNOSTIC RADIOLOGY | 243 | 12 | $3,978 | $332 | premium | 7.7% | (614) 566-5600 |
| 92 | WEST COUNTY RADIOLOGICAL GROUP INC | SAINT LOUIS | MO | DIAGNOSTIC RADIOLOGY | 104 | 12 | $4,206 | $350 | premium | 3.1% | (314) 941-5600 |
| 93 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | MD | DIAGNOSTIC RADIOLOGY | 103 | 12 | $8,760 | $730 | premium | 7.2% | (281) 206-9020 |
| 94 | KETTERING NETWORK RADIOLOGISTS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 74 | 12 | $4,728 | $394 | premium | 4.1% | (937) 558-3800 |
| 95 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 12 | $3,828 | $319 | premium | 5.8% | (704) 332-1291 |
| 96 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NY | DIAGNOSTIC RADIOLOGY | 97 | 12 | $4,248 | $354 | premium | 1.4% | (973) 971-6866 |
| 97 | BRYAN RADIOLOGY ASSOCIATES | BRYAN | TX | DIAGNOSTIC RADIOLOGY | 11 | 12 | $5,796 | $483 | premium | 1.9% | (979) 776-5931 |
| 98 | NORTHLAND RADIOLOGY INC | N KANSAS CITY | MO | DIAGNOSTIC RADIOLOGY | 15 | 12 | $3,564 | $297 | premium | 3.1% | (913) 642-4900 |
| 99 | RADIOLOGY IMAGING ASSOCIATES OF OAK RIDGE PC | OAK RIDGE | TN | DIAGNOSTIC RADIOLOGY | 18 | 12 | $4,680 | $390 | premium | 6.7% | 86673056192240 |
| 100 | UNIVERSITY OF ARKANSAS FOR MEDICAL SCIENCES | LITTLE ROCK | AR | NURSE PRACTITIONER | 1241 | 12 | $3,324 | $277 | premium | 13.6% | (501) 686-8000 |
Showing the top 100 of 102 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 →