77066 — Diagnostic mammography of both breasts
256,103 observed fee-for-service (49%) · ~264,428 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 | 77066 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 4,304 | $2,376,894 | $552 | premium | 13.3% | (212) 263-9700 |
| 2 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 4,082 | $1,427,064 | $350 | premium | 24.0% | (888) 972-9700 |
| 3 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 3,397 | $2,591,726 | $763 | premium | 16.6% | (704) 362-1945 |
| 4 | BREAST CARE SPECIALISTS | ATLANTA | GA | GENERAL SURGERY | 12 | 2,959 | $1,080,035 | $365 | premium | 19.1% | 4042558086208 |
| 5 | MORI BEAN AND BROOKS INC | ORANGE PARK | FL | DIAGNOSTIC RADIOLOGY | 947 | 2,931 | $989,215 | $338 | premium | 5.4% | (904) 399-5550 |
| 6 | METHODIST RADIOLOGY ASSOCIATES, PLLC | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 15 | 2,579 | $773,850 | $300 | premium | 8.0% | (281) 737-1900 |
| 7 | PHYSICIANS REFERRAL SERVICE | HOUSTON | TX | NURSE PRACTITIONER | 2696 | 2,525 | $1,156,751 | $458 | premium | 7.8% | (713) 592-5433 |
| 8 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 2,522 | $2,256,486 | $895 | premium | 4.2% | (916) 681-8852 |
| 9 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 2,508 | $1,178,981 | $470 | premium | 4.1% | (858) 455-9100 |
| 10 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 2,296 | $436,659 | $190 | premium | 7.1% | (817) 321-0470 |
| 11 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 62 | 2,235 | $748,626 | $335 | premium | 13.1% | (888) 601-0943 |
| 12 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 2,138 | $604,752 | $283 | premium | 8.6% | — |
| 13 | LEBOVIC SCHWIMER AND GOLDBERG MEDICAL GROUP | BEVERLY HILLS | CA | DIAGNOSTIC RADIOLOGY | 3 | 2,050 | $744,475 | $363 | premium | 3.4% | (310) 394-2761 |
| 14 | H LEE MOFFITT CANCER CTR AND RES INST LIFE TIME CANCER SCRN CTR INC | TAMPA | FL | PHYSICIAN ASSISTANT | 1103 | 1,870 | $323,585 | $173 | premium | 3.4% | (813) 745-4673 |
| 15 | ARKANSAS HEALTH GROUP | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 666 | 1,831 | $220,978 | $121 | premium | 23.2% | (501) 202-2093 |
| 16 | THE WEST CLINIC P.C. | GERMANTOWN | TN | NURSE PRACTITIONER | 113 | 1,783 | $888,730 | $498 | premium | 11.9% | (901) 683-0055 |
| 17 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 1,707 | $284,925 | $167 | premium | 6.8% | — |
| 18 | UNIVERSITY OF MIAMI | MIAMI | FL | NURSE PRACTITIONER | 2331 | 1,667 | $316,867 | $190 | premium | 3.1% | (305) 689-5437 |
| 19 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 1,603 | $233,323 | $146 | premium | 20.5% | — |
| 20 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 1,492 | $1,172,728 | $786 | premium | 11.0% | (800) 603-0558 |
| 21 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 1,486 | $312,894 | $211 | premium | 14.7% | (314) 747-3000 |
| 22 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 1,464 | $1,016,664 | $694 | premium | 2.4% | (916) 983-7476 |
| 23 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 1,447 | $443,453 | $306 | premium | 2.7% | (239) 936-2316 |
| 24 | RADIOLOGY ASSOCIATES OF RICHMOND INC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 70 | 1,399 | $235,975 | $169 | premium | 7.0% | (804) 272-8806 |
| 25 | RHODE ISLAND MEDICAL IMAGING INC | EAST PROVIDENCE | RI | DIAGNOSTIC RADIOLOGY | 109 | 1,379 | $485,840 | $352 | premium | 49.6% | (401) 626-3900 |
| 26 | LAKE MEDICAL IMAGING AND BREAST CENTER AT THE VILLAGES LLC | LEESBURG | FL | DIAGNOSTIC RADIOLOGY | 22 | 1,374 | $634,788 | $462 | premium | 2.5% | (352) 787-5858 |
| 27 | BEVERLY RADIOLOGY MEDICAL GROUP III | GARDEN GROVE | CA | DIAGNOSTIC RADIOLOGY | 328 | 1,331 | $473,577 | $356 | premium | 2.2% | — |
| 28 | SOUTHWEST DIAGNOSTIC IMAGING LLC | SCOTTSDALE | AZ | DIAGNOSTIC RADIOLOGY | 124 | 1,321 | $970,931 | $735 | premium | 9.8% | (480) 425-5000 |
| 29 | NORTHSIDE RADIOLOGY ASSOCIATES LLC | ATLANTA | GA | DIAGNOSTIC RADIOLOGY | 370 | 1,319 | $494,625 | $375 | premium | 8.5% | (404) 851-6577 |
| 30 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 1,259 | $192,627 | $153 | premium | 6.3% | (757) 466-6870 |
| 31 | SINGLETON ASSOCIATES PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 769 | 1,235 | $463,125 | $375 | premium | 3.8% | (855) 504-4544 |
| 32 | BEAUMONT MEDICAL GROUP HOSPITAL BASED SERVICES | TROY | MI | DIAGNOSTIC RADIOLOGY | 583 | 1,226 | $415,225 | $339 | premium | 12.1% | (248) 964-1187 |
| 33 | WEST COUNTY RADIOLOGICAL GROUP INC | SAINT LOUIS | MO | DIAGNOSTIC RADIOLOGY | 104 | 1,217 | $213,022 | $175 | premium | 12.1% | (314) 941-5600 |
| 34 | MEMPHIS RADIOLOGICAL PC | MEMPHIS | TN | DIAGNOSTIC RADIOLOGY | 51 | 1,198 | $240,428 | $201 | premium | 8.0% | (901) 561-6000 |
| 35 | RADIOLOGY ASSOCIATES LLC | BATON ROUGE | LA | DIAGNOSTIC RADIOLOGY | 79 | 1,187 | $213,660 | $180 | premium | 19.7% | (225) 757-0552 |
| 36 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 1,163 | $424,495 | $365 | premium | 1.9% | (650) 723-4000 |
| 37 | RADIOLOGY LTD LLC | TUCSON | AZ | DIAGNOSTIC RADIOLOGY | 102 | 1,153 | $1,027,195 | $891 | premium | 8.5% | (520) 290-4842 |
| 38 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 1,142 | $194,140 | $170 | premium | 5.6% | (704) 332-1291 |
| 39 | CITY OF HOPE MEDICAL FOUNDATION | DUARTE | CA | NURSE PRACTITIONER | 942 | 1,137 | $199,664 | $176 | premium | 1.9% | (626) 256-4673 |
| 40 | CENTRAL ARKANSAS RADIATION THERAPY INSTITUTE INC | LITTLE ROCK | AR | HEMATOLOGY/ONCOLOGY | 90 | 1,101 | $484,028 | $440 | premium | 13.9% | — |
| 41 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 1,088 | $128,384 | $118 | premium | 5.3% | (919) 684-8111 |
| 42 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 1,065 | $171,020 | $161 | premium | 10.5% | (616) 363-7272 |
| 43 | RUSH UNIVERSITY MEDICAL GROUP | CHICAGO | IL | PHYSICIAN ASSISTANT | 1496 | 1,063 | $171,455 | $161 | premium | 4.3% | (312) 563-2875 |
| 44 | CENTRA MEDICAL GROUP LLC | LYNCHBURG | VA | NURSE PRACTITIONER | 714 | 1,043 | $98,867 | $95 | premium | 5.2% | (434) 947-3033 |
| 45 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 1,041 | $772,924 | $742 | premium | 14.6% | (507) 284-2511 |
| 46 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 1,039 | $115,493 | $111 | premium | 7.7% | — |
| 47 | SMI IMAGING LLC | PHOENIX | AZ | DIAGNOSTIC RADIOLOGY | 364 | 1,012 | $694,216 | $686 | premium | 7.5% | (480) 753-6161 |
| 48 | OU HEALTH PARTNERS INC | OKLAHOMA CITY | OK | PHYSICIAN ASSISTANT | 1160 | 1,003 | $239,886 | $239 | premium | 17.0% | (405) 271-4311 |
| 49 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 244 | 987 | $346,684 | $351 | premium | 3.0% | (212) 772-3111 |
| 50 | CLEVELAND CLINIC FLORIDA | WESTON | FL | NURSE PRACTITIONER | 720 | 971 | $317,469 | $327 | premium | 1.8% | (954) 659-5000 |
| 51 | WOMEN CENTER FOR RADIOLOGY | ORLANDO | FL | DIAGNOSTIC RADIOLOGY | 5 | 958 | $316,140 | $330 | premium | 1.8% | (407) 841-0822 |
| 52 | UCLA RADIOLOGY MEDICAL GROUP | LOS ANGELES | CA | DIAGNOSTIC RADIOLOGY | 191 | 950 | $608,921 | $641 | premium | 1.6% | (310) 301-6800 |
| 53 | PROGRESSIVE PHYSICIAN ASSOC INC | PHILLIPSBURG | PA | DIAGNOSTIC RADIOLOGY | 160 | 938 | $185,010 | $197 | premium | 3.8% | (908) 859-6700 |
| 54 | SPECTRUM HEALTHCARE PARTNERS PA | PORTLAND | ME | DIAGNOSTIC RADIOLOGY | 281 | 937 | $145,235 | $155 | premium | 51.0% | (207) 828-2160 |
| 55 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 937 | $773,466 | $825 | premium | 1.5% | (415) 600-1020 |
| 56 | MORAN ROWEN AND DORSEY INC | ORANGE | CA | DIAGNOSTIC RADIOLOGY | 35 | 921 | $197,098 | $214 | premium | 1.5% | (714) 628-3305 |
| 57 | WASHINGTON RADIOLOGY ASSOC PLLC | WASHINGTON | DC | DIAGNOSTIC RADIOLOGY | 38 | 919 | $458,658 | $499 | premium | 15.0% | (202) 223-9722 |
| 58 | BAPTIST HEALTH MEDICAL GROUP INC | LOUISVILLE | KY | NURSE PRACTITIONER | 2448 | 906 | $85,164 | $94 | premium | 16.6% | (502) 928-1050 |
| 59 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 894 | $177,418 | $198 | premium | 5.9% | (617) 732-5500 |
| 60 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 877 | $83,400 | $95 | premium | 3.5% | — |
| 61 | RADIOLOGY OF MSMC, LLC | MIAMI | FL | DIAGNOSTIC RADIOLOGY | 23 | 855 | $220,590 | $258 | premium | 1.6% | (305) 674-3905 |
| 62 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 849 | $106,125 | $125 | premium | 4.3% | (804) 288-8327 |
| 63 | QUANTUM RADIOLOGY PC | MARIETTA | GA | DIAGNOSTIC RADIOLOGY | 104 | 819 | $215,985 | $264 | premium | 5.3% | (770) 732-4000 |
| 64 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 793 | $118,157 | $149 | premium | 8.2% | (812) 422-3254 |
| 65 | MEDICAL ASSOCIATES OF NORTHWEST ARKANSAS, PA | FAYETTEVILLE | AR | FAMILY PRACTICE | 106 | 789 | $351,500 | $446 | premium | 10.0% | (479) 521-0200 |
| 66 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 243 | 768 | $127,554 | $166 | premium | 5.7% | (614) 566-5600 |
| 67 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 755 | $125,872 | $167 | premium | 4.8% | (973) 971-6866 |
| 68 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 751 | $443,996 | $591 | premium | 2.3% | (914) 241-1050 |
| 69 | RADIOLOGY AND MEDICAL IMAGERY OF NEWNAN PC | NEWNAN | GA | DIAGNOSTIC RADIOLOGY | 35 | 751 | $120,911 | $161 | premium | 4.8% | (770) 400-1000 |
| 70 | ROSE IMAGING SPECIALISTS PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 43 | 744 | $482,856 | $649 | premium | 2.3% | (866) 257-6864 |
| 71 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 743 | $188,966 | $254 | premium | 3.6% | (252) 752-5000 |
| 72 | REGENTS OF THE UNIVERSITY OF CALIFORNIA | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 2057 | 740 | $207,591 | $281 | premium | 1.2% | (800) 926-8273 |
| 73 | AMERICAN RADIOLOGY CONSULTANTS PLLC | DALLAS | TX | DIAGNOSTIC RADIOLOGY | 121 | 739 | $147,061 | $199 | premium | 2.3% | (214) 820-3216 |
| 74 | FPA HOSPITAL BASED | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 427 | 728 | $156,150 | $214 | premium | 2.2% | (212) 252-6004 |
| 75 | CALIFORNIA MANAGED IMAGING MEDICAL GROUP INC | SANTA BARBARA | CA | DIAGNOSTIC RADIOLOGY | 64 | 727 | $409,294 | $563 | premium | 1.2% | (800) 841-4236 |
| 76 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 718 | $203,175 | $283 | premium | 4.8% | (617) 724-0287 |
| 77 | CENTRAL ILLINOIS RADIOLOGICAL ASSOCIATES LTD | PEORIA | IL | DIAGNOSTIC RADIOLOGY | 196 | 714 | $211,250 | $296 | premium | 2.9% | (309) 655-2000 |
| 78 | UNIVERSITY OF PITTSBURGH PHYSICIANS | PITTSBURGH | PA | DIAGNOSTIC RADIOLOGY | 4291 | 714 | $153,652 | $215 | premium | 2.9% | — |
| 79 | MASS GENERAL BRIGHAM COMMUNITY PHYSICIANS INC | MEDFORD | MA | DIAGNOSTIC RADIOLOGY | 424 | 709 | $143,924 | $203 | premium | 4.7% | (781) 395-4909 |
| 80 | KETTERING NETWORK RADIOLOGISTS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 74 | 705 | $128,693 | $183 | premium | 5.2% | (937) 558-3800 |
| 81 | SAINT LUKES PHYSICIAN GROUP INC | KANSAS CITY | MO | NURSE PRACTITIONER | 1228 | 705 | $84,600 | $120 | premium | 7.0% | — |
| 82 | LOYOLA UNIVERSITY MEDICAL CENTER | MAYWOOD | IL | NURSE PRACTITIONER | 933 | 698 | $151,556 | $217 | premium | 2.8% | (708) 216-8372 |
| 83 | PHYSICIANS OF CAPE COD HOSPITAL | HYANNIS | MA | NURSE PRACTITIONER | 318 | 696 | $105,488 | $152 | premium | 4.6% | (774) 552-6000 |
| 84 | STEPHEN W BROWN AND RADIOLOGY ASSOCIATES OF AUGUSTA LLP | AUGUSTA | GA | DIAGNOSTIC RADIOLOGY | 19 | 693 | $125,950 | $182 | premium | 4.5% | (706) 774-5035 |
| 85 | HURON VALLEY RADIOLOGY PC | YPSILANTI | MI | DIAGNOSTIC RADIOLOGY | 77 | 690 | $111,392 | $161 | premium | 6.8% | (734) 712-8350 |
| 86 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 683 | $72,529 | $106 | premium | 2.1% | (254) 724-2663 |
| 87 | UNIVERSITY OF PENN - MEDICAL GROUP | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 3505 | 681 | $100,023 | $147 | premium | 2.7% | (215) 662-2777 |
| 88 | MEDICAL FACULTY ASSOCIATES, INC | WASHINGTON | DC | PHYSICIAN ASSISTANT | 685 | 678 | $224,418 | $331 | premium | 11.1% | (202) 715-4000 |
| 89 | COLUMBUS RADIOLOGY CORP | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 288 | 673 | $117,775 | $175 | premium | 5.0% | (614) 228-7231 |
| 90 | FLORIDA HOSPITAL PHYSICIAN GROUP INC | TAMPA | FL | DIAGNOSTIC RADIOLOGY | 891 | 657 | $229,050 | $349 | premium | 1.2% | (813) 615-7075 |
| 91 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 634 | $70,593 | $111 | premium | 44.6% | (801) 261-8346 |
| 92 | DUPAGE MEDICAL GROUP LTD | GLEN ELLYN | IL | PHYSICIAN ASSISTANT | 1323 | 612 | $273,564 | $447 | premium | 2.5% | (630) 469-9200 |
| 93 | WINDSONG RADIOLOGY GROUP P C | WILLIAMSVILLE | NY | DIAGNOSTIC RADIOLOGY | 23 | 609 | $521,899 | $857 | premium | 1.9% | (716) 631-2500 |
| 94 | UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL CENTER AT DALLAS | DALLAS | TX | PHYSICIAN ASSISTANT | 3200 | 608 | $417,088 | $686 | premium | 1.9% | (214) 633-5555 |
| 95 | HUMBOLDT RADIOLOGY MEDICAL GROUP,INC | EUREKA | CA | DIAGNOSTIC RADIOLOGY | 13 | 589 | $40,641 | $69 | premium | 1.0% | (707) 445-5431 |
| 96 | LAKELAND RADIOLOGISTS P A | FLOWOOD | MS | DIAGNOSTIC RADIOLOGY | 29 | 584 | $73,441 | $126 | premium | 15.6% | (601) 936-2390 |
| 97 | SDMI, LLC | LAS VEGAS | NV | DIAGNOSTIC RADIOLOGY | 36 | 582 | $279,842 | $481 | premium | 17.2% | (702) 732-6000 |
| 98 | RADIOLOGY SUBSPECIALISTS OF NORTHERN ILLINOIS LLC | GENEVA | IL | DIAGNOSTIC RADIOLOGY | 32 | 581 | $139,776 | $241 | premium | 2.3% | (630) 208-4412 |
| 99 | TEXAS RADIOLOGY ASSOCIATES LLP | PLANO | TX | DIAGNOSTIC RADIOLOGY | 153 | 577 | $383,128 | $664 | premium | 1.8% | (469) 814-2000 |
| 100 | RADIOLOGISTS PA | FORT SMITH | AR | DIAGNOSTIC RADIOLOGY | 19 | 572 | $92,253 | $161 | premium | 7.2% | (479) 474-1616 |
Showing the top 100 of 897 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 →