76642 — Limited ultrasound scan of 1 breast
300,706 observed fee-for-service (50%) · ~300,398 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 | 76642 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 5,035 | $990,103 | $197 | premium | 24.9% | (888) 972-9700 |
| 2 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 4,288 | $1,788,555 | $417 | premium | 6.6% | (916) 681-8852 |
| 3 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 3,717 | $1,307,853 | $352 | premium | 10.6% | (212) 263-9700 |
| 4 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 2,871 | $675,460 | $235 | premium | 8.8% | — |
| 5 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 2,833 | $421,806 | $149 | premium | 9.7% | (817) 321-0470 |
| 6 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 2,686 | $263,016 | $98 | premium | 26.1% | — |
| 7 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 2,597 | $796,548 | $307 | premium | 11.3% | (704) 362-1945 |
| 8 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 62 | 2,303 | $425,229 | $185 | premium | 11.4% | (888) 601-0943 |
| 9 | RHODE ISLAND MEDICAL IMAGING INC | EAST PROVIDENCE | RI | DIAGNOSTIC RADIOLOGY | 109 | 1,944 | $715,740 | $368 | premium | 50.0% | (401) 626-3900 |
| 10 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 1,897 | $431,808 | $228 | premium | 8.9% | (757) 466-6870 |
| 11 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 1,880 | $229,567 | $122 | premium | 11.6% | (616) 363-7272 |
| 12 | UCLA RADIOLOGY MEDICAL GROUP | LOS ANGELES | CA | DIAGNOSTIC RADIOLOGY | 191 | 1,709 | $742,830 | $435 | premium | 2.6% | (310) 301-6800 |
| 13 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 1,650 | $211,645 | $128 | premium | 5.1% | — |
| 14 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 1,649 | $402,345 | $244 | premium | 4.1% | (239) 936-2316 |
| 15 | BEAUMONT MEDICAL GROUP HOSPITAL BASED SERVICES | TROY | MI | DIAGNOSTIC RADIOLOGY | 583 | 1,638 | $308,939 | $189 | premium | 10.1% | (248) 964-1187 |
| 16 | BEVERLY RADIOLOGY MEDICAL GROUP III | GARDEN GROVE | CA | DIAGNOSTIC RADIOLOGY | 328 | 1,595 | $354,321 | $222 | premium | 2.4% | — |
| 17 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 1,582 | $564,438 | $357 | premium | 2.4% | (916) 983-7476 |
| 18 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 1,566 | $261,990 | $167 | premium | 10.2% | (314) 747-3000 |
| 19 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 1,507 | $142,468 | $95 | premium | 7.2% | — |
| 20 | RADIOLOGY LTD LLC | TUCSON | AZ | DIAGNOSTIC RADIOLOGY | 102 | 1,488 | $709,545 | $477 | premium | 11.2% | (520) 290-4842 |
| 21 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 1,472 | $114,825 | $78 | premium | 4.8% | — |
| 22 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 1,444 | $203,691 | $141 | premium | 12.7% | (812) 422-3254 |
| 23 | NORTHSIDE RADIOLOGY ASSOCIATES LLC | ATLANTA | GA | DIAGNOSTIC RADIOLOGY | 370 | 1,439 | $614,453 | $427 | premium | 7.8% | (404) 851-6577 |
| 24 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 1,409 | $186,330 | $132 | premium | 5.6% | (973) 971-6866 |
| 25 | RUSH UNIVERSITY MEDICAL GROUP | CHICAGO | IL | PHYSICIAN ASSISTANT | 1496 | 1,408 | $177,260 | $126 | premium | 4.3% | (312) 563-2875 |
| 26 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 1,391 | $635,849 | $457 | premium | 2.1% | (415) 600-1020 |
| 27 | PROGRESSIVE PHYSICIAN ASSOC INC | PHILLIPSBURG | PA | DIAGNOSTIC RADIOLOGY | 160 | 1,382 | $186,630 | $135 | premium | 4.5% | (908) 859-6700 |
| 28 | MEDICAL ASSOCIATES OF NORTHWEST ARKANSAS, PA | FAYETTEVILLE | AR | FAMILY PRACTICE | 106 | 1,374 | $234,952 | $171 | premium | 19.0% | (479) 521-0200 |
| 29 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 1,339 | $560,380 | $419 | premium | 10.9% | (507) 284-2511 |
| 30 | SPECTRUM HEALTHCARE PARTNERS PA | PORTLAND | ME | DIAGNOSTIC RADIOLOGY | 281 | 1,312 | $151,620 | $116 | premium | 45.1% | (207) 828-2160 |
| 31 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 1,310 | $131,662 | $101 | premium | 46.7% | (801) 261-8346 |
| 32 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 1,268 | $189,471 | $149 | premium | 5.5% | (617) 732-5500 |
| 33 | KETTERING NETWORK RADIOLOGISTS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 74 | 1,258 | $163,306 | $130 | premium | 6.0% | (937) 558-3800 |
| 34 | SMI IMAGING LLC | PHOENIX | AZ | DIAGNOSTIC RADIOLOGY | 364 | 1,256 | $456,105 | $363 | premium | 9.5% | (480) 753-6161 |
| 35 | RADIOLOGY ASSOCIATES OF RICHMOND INC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 70 | 1,251 | $177,608 | $142 | premium | 5.9% | (804) 272-8806 |
| 36 | COLUMBUS RADIOLOGY CORP | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 288 | 1,189 | $183,159 | $154 | premium | 5.7% | (614) 228-7231 |
| 37 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 243 | 1,156 | $169,290 | $146 | premium | 5.5% | (614) 566-5600 |
| 38 | SOUTHWEST DIAGNOSTIC IMAGING LLC | SCOTTSDALE | AZ | DIAGNOSTIC RADIOLOGY | 124 | 1,156 | $494,718 | $428 | premium | 8.7% | (480) 425-5000 |
| 39 | LAKE MEDICAL IMAGING AND BREAST CENTER AT THE VILLAGES LLC | LEESBURG | FL | DIAGNOSTIC RADIOLOGY | 22 | 1,155 | $324,072 | $281 | premium | 2.9% | (352) 787-5858 |
| 40 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 1,153 | $239,197 | $207 | premium | 1.8% | (650) 723-4000 |
| 41 | BAPTIST HEALTH MEDICAL GROUP INC | LOUISVILLE | KY | NURSE PRACTITIONER | 2448 | 1,152 | $85,127 | $74 | premium | 15.0% | (502) 928-1050 |
| 42 | CENTRAL ILLINOIS RADIOLOGICAL ASSOCIATES LTD | PEORIA | IL | DIAGNOSTIC RADIOLOGY | 196 | 1,151 | $239,019 | $208 | premium | 3.5% | (309) 655-2000 |
| 43 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 1,148 | $547,425 | $477 | premium | 8.7% | (800) 603-0558 |
| 44 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 1,146 | $360,410 | $314 | premium | 3.3% | (914) 241-1050 |
| 45 | WEST COUNTY RADIOLOGICAL GROUP INC | SAINT LOUIS | MO | DIAGNOSTIC RADIOLOGY | 104 | 1,141 | $138,297 | $121 | premium | 7.5% | (314) 941-5600 |
| 46 | MEMPHIS RADIOLOGICAL PC | MEMPHIS | TN | DIAGNOSTIC RADIOLOGY | 51 | 1,135 | $176,465 | $155 | premium | 7.0% | (901) 561-6000 |
| 47 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 1,096 | $201,319 | $184 | premium | 3.7% | (254) 724-2663 |
| 48 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 244 | 1,093 | $215,907 | $198 | premium | 3.1% | (212) 772-3111 |
| 49 | MASS GENERAL BRIGHAM COMMUNITY PHYSICIANS INC | MEDFORD | MA | DIAGNOSTIC RADIOLOGY | 424 | 1,091 | $158,340 | $145 | premium | 4.7% | (781) 395-4909 |
| 50 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 1,063 | $200,882 | $189 | premium | 4.6% | (617) 724-0287 |
| 51 | THE PHILIP ISRAEL BREAST CENTER PC | MARIETTA | GA | GENERAL SURGERY | 4 | 1,061 | $393,750 | $371 | premium | 5.7% | (770) 428-4486 |
| 52 | MORI BEAN AND BROOKS INC | ORANGE PARK | FL | DIAGNOSTIC RADIOLOGY | 947 | 1,055 | $418,338 | $397 | premium | 2.6% | (904) 399-5550 |
| 53 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 1,020 | $494,868 | $485 | premium | 2.6% | (904) 953-2000 |
| 54 | DUPAGE MEDICAL GROUP LTD | GLEN ELLYN | IL | PHYSICIAN ASSISTANT | 1323 | 1,014 | $264,480 | $261 | premium | 3.1% | (630) 469-9200 |
| 55 | SAINT LUKES PHYSICIAN GROUP INC | KANSAS CITY | MO | NURSE PRACTITIONER | 1228 | 1,014 | $90,888 | $90 | premium | 6.6% | — |
| 56 | CALIFORNIA MANAGED IMAGING MEDICAL GROUP INC | SANTA BARBARA | CA | DIAGNOSTIC RADIOLOGY | 64 | 979 | $451,652 | $461 | premium | 1.5% | (800) 841-4236 |
| 57 | RADIOLOGY AND MEDICAL IMAGERY OF NEWNAN PC | NEWNAN | GA | DIAGNOSTIC RADIOLOGY | 35 | 958 | $206,222 | $215 | premium | 5.2% | (770) 400-1000 |
| 58 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 929 | $136,563 | $147 | premium | 4.0% | (919) 684-8111 |
| 59 | PHYSICIANS OF CAPE COD HOSPITAL | HYANNIS | MA | NURSE PRACTITIONER | 318 | 920 | $93,808 | $102 | premium | 4.0% | (774) 552-6000 |
| 60 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 920 | $83,020 | $90 | premium | 4.0% | (704) 332-1291 |
| 61 | RADIOLOGY SUBSPECIALISTS OF NORTHERN ILLINOIS LLC | GENEVA | IL | DIAGNOSTIC RADIOLOGY | 32 | 898 | $175,822 | $196 | premium | 2.8% | (630) 208-4412 |
| 62 | DIAGNOSTIC X-RAY PHYSICIANS, PSC | LOUISVILLE | KY | DIAGNOSTIC RADIOLOGY | 36 | 869 | $127,200 | $146 | premium | 11.3% | (502) 893-1000 |
| 63 | LAHEY CLINIC INC | BURLINGTON | MA | NURSE PRACTITIONER | 1400 | 865 | $136,878 | $158 | premium | 3.8% | — |
| 64 | TEXAS ONCOLOGY PA | DALLAS | TX | PHYSICIAN ASSISTANT | 995 | 862 | $324,115 | $376 | premium | 2.9% | — |
| 65 | ROSE IMAGING SPECIALISTS PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 43 | 852 | $210,560 | $247 | premium | 2.9% | (866) 257-6864 |
| 66 | OU HEALTH PARTNERS INC | OKLAHOMA CITY | OK | PHYSICIAN ASSISTANT | 1160 | 848 | $150,716 | $178 | premium | 10.4% | (405) 271-4311 |
| 67 | RADIOLOGY CONSULTANTS OF IOWA PLC | CEDAR RAPIDS | IA | DIAGNOSTIC RADIOLOGY | 72 | 844 | $113,832 | $135 | premium | 12.0% | (319) 364-0121 |
| 68 | MORAN ROWEN AND DORSEY INC | ORANGE | CA | DIAGNOSTIC RADIOLOGY | 35 | 841 | $131,633 | $157 | premium | 1.3% | (714) 628-3305 |
| 69 | HURON VALLEY RADIOLOGY PC | YPSILANTI | MI | DIAGNOSTIC RADIOLOGY | 77 | 834 | $101,906 | $122 | premium | 5.2% | (734) 712-8350 |
| 70 | SPARTANBURG MEDICAL CENTER | SPARTANBURG | SC | NURSE PRACTITIONER | 1070 | 827 | $108,104 | $131 | premium | 8.0% | (864) 587-3000 |
| 71 | THE PHILIP ISRAEL BREAST CENTER PC | MARIETTA | TN | GENERAL SURGERY | 4 | 824 | $291,060 | $353 | premium | 5.1% | (770) 428-4486 |
| 72 | UNIVERSITY OF MIAMI | MIAMI | FL | NURSE PRACTITIONER | 2331 | 821 | $265,632 | $324 | premium | 2.1% | (305) 689-5437 |
| 73 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 821 | $119,241 | $145 | premium | 3.6% | (252) 752-5000 |
| 74 | METHODIST RADIOLOGY ASSOCIATES, PLLC | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 15 | 819 | $162,650 | $199 | premium | 2.8% | (281) 737-1900 |
| 75 | UNIVERSITY OF PITTSBURGH PHYSICIANS | PITTSBURGH | PA | DIAGNOSTIC RADIOLOGY | 4291 | 817 | $174,414 | $213 | premium | 2.7% | — |
| 76 | PROFESSIONAL RADIOLOGY INC | CINCINNATI | OH | DIAGNOSTIC RADIOLOGY | 44 | 810 | $74,741 | $92 | premium | 3.9% | (513) 624-4500 |
| 77 | SANFORD MEDICAL CENTER FARGO | FARGO | ND | NURSE PRACTITIONER | 1198 | 804 | $91,566 | $114 | premium | 30.3% | (701) 234-2000 |
| 78 | THE WEST CLINIC P.C. | GERMANTOWN | TN | NURSE PRACTITIONER | 113 | 800 | $214,938 | $269 | premium | 4.9% | (901) 683-0055 |
| 79 | UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL CENTER AT DALLAS | DALLAS | TX | PHYSICIAN ASSISTANT | 3200 | 784 | $101,901 | $130 | premium | 2.7% | (214) 633-5555 |
| 80 | HENRY FORD HEALTH SYSTEM | DETROIT | MI | PHYSICIAN ASSISTANT | 2536 | 780 | $108,000 | $138 | premium | 4.8% | (313) 916-2600 |
| 81 | BREAST IMAGING RADIOLOGISTS A MEDICAL GROUP INC | LONG BEACH | CA | DIAGNOSTIC RADIOLOGY | 5 | 776 | $129,656 | $167 | premium | 1.2% | (844) 825-9300 |
| 82 | SUMMIT MEDICAL GROUP PA | BERKELEY HEIGHTS | NJ | PHYSICIAN ASSISTANT | 1183 | 768 | $260,329 | $339 | premium | 3.1% | (908) 273-4300 |
| 83 | TOLEDO RADIOLOGICAL ASSOCIATES INC | COLDWATER | OH | DIAGNOSTIC RADIOLOGY | 51 | 758 | $81,064 | $107 | premium | 3.6% | (517) 279-5400 |
| 84 | RADIOLOGY ASSOCIATES LLC | BATON ROUGE | LA | DIAGNOSTIC RADIOLOGY | 79 | 757 | $123,057 | $163 | premium | 11.1% | (225) 757-0552 |
| 85 | TEMPLE FACULTY PRACTICE PLAN INC | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 1330 | 756 | $90,337 | $119 | premium | 2.5% | — |
| 86 | GRAND TRAVERSE RADIOLOGISTS PC | TRAVERSE CITY | MI | DIAGNOSTIC RADIOLOGY | 32 | 753 | $83,018 | $110 | premium | 4.6% | (231) 935-5000 |
| 87 | NORTHWEST RADIOLOGY ASSOCIATES SC | ARLINGTON HEIGHTS | IL | DIAGNOSTIC RADIOLOGY | 21 | 745 | $90,852 | $122 | premium | 2.3% | (847) 618-1000 |
| 88 | RADIOLOGIC CENTER INC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 20 | 744 | $93,035 | $125 | premium | 14.9% | (402) 390-0606 |
| 89 | AMERICAN RADIOLOGY CONSULTANTS PLLC | DALLAS | TX | DIAGNOSTIC RADIOLOGY | 121 | 741 | $98,010 | $132 | premium | 2.5% | (214) 820-3216 |
| 90 | STEPHEN W BROWN AND RADIOLOGY ASSOCIATES OF AUGUSTA LLP | AUGUSTA | GA | DIAGNOSTIC RADIOLOGY | 19 | 737 | $149,868 | $203 | premium | 4.0% | (706) 774-5035 |
| 91 | VISTA RADIOLOGY, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 68 | 729 | $112,358 | $154 | premium | 4.5% | (865) 546-9484 |
| 92 | RWJBH OBSERVATION ASSOCIATES LLC | SOMERVILLE | NJ | PHYSICIAN ASSISTANT | 937 | 727 | $189,549 | $261 | premium | 2.9% | (908) 685-2200 |
| 93 | DRS HARRIS BIRKHILL WANG SONGE AND ASSOC PC | DEARBORN | MI | DIAGNOSTIC RADIOLOGY | 62 | 708 | $60,830 | $86 | premium | 4.4% | (313) 593-7301 |
| 94 | QUANTUM IMAGING AND THERAPEUTIC ASSOCIATES INC | HARRISBURG | PA | DIAGNOSTIC RADIOLOGY | 90 | 696 | $91,583 | $132 | premium | 2.3% | (717) 932-5200 |
| 95 | LAKELAND RADIOLOGISTS P A | FLOWOOD | MS | DIAGNOSTIC RADIOLOGY | 29 | 695 | $62,054 | $89 | premium | 13.0% | (601) 936-2390 |
| 96 | SINGLETON ASSOCIATES PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 769 | 692 | $335,419 | $485 | premium | 2.4% | (855) 504-4544 |
| 97 | TRISTATE IMG (IMAGING MEDICAL GROUP) INC | CINCINNATI | OH | DIAGNOSTIC RADIOLOGY | 44 | 689 | $77,832 | $113 | premium | 3.3% | (513) 865-1331 |
| 98 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 681 | $61,795 | $91 | premium | 3.2% | (804) 288-8327 |
| 99 | UMASS MEMORIAL MEDICAL GROUP INC | WORCESTER | MA | PHYSICIAN ASSISTANT | 2483 | 681 | $114,924 | $169 | premium | 3.0% | (508) 334-1000 |
| 100 | CAPE RADIOLOGY GROUP PC | CAPE GIRARDEAU | MO | DIAGNOSTIC RADIOLOGY | 53 | 664 | $70,482 | $106 | premium | 4.3% | (573) 334-6071 |
Showing the top 100 of 985 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 →