19083 — Biopsy of breast and placement of locating device using ultrasound, first growth
41,003 observed fee-for-service (49%) · ~41,868 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 | 19083 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 486 | $955,947 | $1,967 | premium | 24.3% | (888) 972-9700 |
| 2 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 473 | $1,372,302 | $2,901 | premium | 6.2% | (916) 681-8852 |
| 3 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 465 | $4,221,270 | $9,078 | premium | 7.6% | (212) 263-9700 |
| 4 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 412 | $265,274 | $644 | premium | 9.6% | (817) 321-0470 |
| 5 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 368 | $1,090,160 | $2,962 | premium | 13.5% | (704) 362-1945 |
| 6 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 347 | $181,961 | $524 | premium | 22.9% | — |
| 7 | METHODIST RADIOLOGY ASSOCIATES, PLLC | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 15 | 342 | $331,074 | $968 | premium | 8.0% | (281) 737-1900 |
| 8 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 308 | $734,209 | $2,384 | premium | 4.1% | (916) 983-7476 |
| 9 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 307 | $163,017 | $531 | premium | 11.8% | (973) 971-6866 |
| 10 | MORI BEAN AND BROOKS INC | ORANGE PARK | FL | DIAGNOSTIC RADIOLOGY | 947 | 303 | $703,612 | $2,322 | premium | 5.1% | (904) 399-5550 |
| 11 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 244 | 283 | $575,056 | $2,032 | premium | 4.6% | (212) 772-3111 |
| 12 | SOUTHWEST DIAGNOSTIC IMAGING LLC | SCOTTSDALE | AZ | DIAGNOSTIC RADIOLOGY | 124 | 280 | $687,186 | $2,454 | premium | 15.0% | (480) 425-5000 |
| 13 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 266 | $106,747 | $401 | premium | 8.3% | — |
| 14 | RHODE ISLAND MEDICAL IMAGING INC | EAST PROVIDENCE | RI | DIAGNOSTIC RADIOLOGY | 109 | 263 | $342,962 | $1,304 | premium | 49.4% | (401) 626-3900 |
| 15 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 259 | $547,754 | $2,115 | premium | 3.4% | (858) 455-9100 |
| 16 | BEAUMONT MEDICAL GROUP HOSPITAL BASED SERVICES | TROY | MI | DIAGNOSTIC RADIOLOGY | 583 | 256 | $133,588 | $522 | premium | 13.6% | (248) 964-1187 |
| 17 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 252 | $135,072 | $536 | premium | 13.4% | (616) 363-7272 |
| 18 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 251 | $315,172 | $1,256 | premium | 7.9% | — |
| 19 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 249 | $622,500 | $2,500 | premium | 4.1% | (631) 225-7200 |
| 20 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 240 | $117,360 | $489 | premium | 9.1% | (757) 466-6870 |
| 21 | MEDICAL ASSOCIATES OF NORTHWEST ARKANSAS, PA | FAYETTEVILLE | AR | FAMILY PRACTICE | 106 | 236 | $338,349 | $1,434 | premium | 23.8% | (479) 521-0200 |
| 22 | WILMINGTON SURGICAL ASSOCIATES PA | WILMINGTON | NC | GENERAL SURGERY | 9 | 227 | $407,011 | $1,793 | premium | 8.3% | (910) 763-7363 |
| 23 | SINGLETON ASSOCIATES PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 769 | 225 | $680,400 | $3,024 | premium | 5.2% | (855) 504-4544 |
| 24 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 219 | $439,378 | $2,006 | premium | 3.6% | (914) 241-1050 |
| 25 | RADIOLOGY ASSOCIATES OF RICHMOND INC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 70 | 218 | $255,496 | $1,172 | premium | 8.2% | (804) 272-8806 |
| 26 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 213 | $295,424 | $1,387 | premium | 3.6% | (239) 936-2316 |
| 27 | LAKE MEDICAL IMAGING AND BREAST CENTER AT THE VILLAGES LLC | LEESBURG | FL | DIAGNOSTIC RADIOLOGY | 22 | 208 | $309,088 | $1,486 | premium | 3.5% | (352) 787-5858 |
| 28 | CITY OF HOPE MEDICAL FOUNDATION | DUARTE | CA | NURSE PRACTITIONER | 942 | 205 | $151,433 | $739 | premium | 2.7% | (626) 256-4673 |
| 29 | SAINT LUKES PHYSICIAN GROUP INC | KANSAS CITY | MO | NURSE PRACTITIONER | 1228 | 202 | $330,270 | $1,635 | premium | 11.8% | — |
| 30 | COLUMBUS RADIOLOGY CORP | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 288 | 200 | $604,800 | $3,024 | premium | 8.0% | (614) 228-7231 |
| 31 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 200 | $579,788 | $2,899 | premium | 2.6% | (415) 600-1020 |
| 32 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 197 | $684,641 | $3,475 | premium | 3.3% | (904) 953-2000 |
| 33 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 195 | $159,444 | $818 | premium | 8.8% | (617) 732-5500 |
| 34 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 193 | $94,755 | $491 | premium | 56.4% | (801) 261-8346 |
| 35 | KETTERING NETWORK RADIOLOGISTS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 74 | 192 | $121,038 | $630 | premium | 7.7% | (937) 558-3800 |
| 36 | PROGRESSIVE PHYSICIAN ASSOC INC | PHILLIPSBURG | PA | DIAGNOSTIC RADIOLOGY | 160 | 192 | $156,795 | $817 | premium | 5.7% | (908) 859-6700 |
| 37 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 191 | $265,924 | $1,392 | premium | 5.6% | — |
| 38 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 190 | $234,840 | $1,236 | premium | 14.4% | (812) 422-3254 |
| 39 | SUMMIT MEDICAL GROUP PA | BERKELEY HEIGHTS | NJ | PHYSICIAN ASSISTANT | 1183 | 181 | $711,117 | $3,929 | premium | 7.0% | (908) 273-4300 |
| 40 | ROSE IMAGING SPECIALISTS PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 43 | 178 | $424,487 | $2,385 | premium | 4.1% | (866) 257-6864 |
| 41 | BREAST CARE SPECIALISTS | ATLANTA | GA | GENERAL SURGERY | 12 | 168 | $228,984 | $1,363 | premium | 7.9% | 4042558086208 |
| 42 | SPARTANBURG MEDICAL CENTER | SPARTANBURG | SC | NURSE PRACTITIONER | 1070 | 166 | $356,829 | $2,150 | premium | 10.9% | (864) 587-3000 |
| 43 | MASS GENERAL BRIGHAM COMMUNITY PHYSICIANS INC | MEDFORD | MA | DIAGNOSTIC RADIOLOGY | 424 | 164 | $151,180 | $922 | premium | 7.4% | (781) 395-4909 |
| 44 | OU HEALTH PARTNERS INC | OKLAHOMA CITY | OK | PHYSICIAN ASSISTANT | 1160 | 161 | $341,600 | $2,122 | premium | 12.5% | (405) 271-4311 |
| 45 | RADIOLOGY CONSULTANTS OF TULSA, INC. | TULSA | OK | DIAGNOSTIC RADIOLOGY | 34 | 152 | $70,908 | $466 | premium | 11.8% | (918) 743-8838 |
| 46 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 243 | 151 | $285,239 | $1,889 | premium | 6.0% | (614) 566-5600 |
| 47 | CENTRAL ARKANSAS RADIATION THERAPY INSTITUTE INC | LITTLE ROCK | AR | HEMATOLOGY/ONCOLOGY | 90 | 150 | $186,096 | $1,241 | premium | 15.1% | — |
| 48 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 150 | $408,419 | $2,723 | premium | 8.1% | (800) 603-0558 |
| 49 | SANFORD MEDICAL CENTER FARGO | FARGO | ND | NURSE PRACTITIONER | 1198 | 146 | $50,434 | $345 | premium | 35.5% | (701) 234-2000 |
| 50 | RADIOLOGY LTD LLC | TUCSON | AZ | DIAGNOSTIC RADIOLOGY | 102 | 146 | $578,744 | $3,964 | premium | 7.8% | (520) 290-4842 |
| 51 | PHYSICIANS REFERRAL SERVICE | HOUSTON | TX | NURSE PRACTITIONER | 2696 | 145 | $314,288 | $2,168 | premium | 3.4% | (713) 592-5433 |
| 52 | DIAGNOSTIC X-RAY PHYSICIANS, PSC | LOUISVILLE | KY | DIAGNOSTIC RADIOLOGY | 36 | 145 | $101,268 | $698 | premium | 15.5% | (502) 893-1000 |
| 53 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 144 | $195,264 | $1,356 | premium | 8.4% | (314) 747-3000 |
| 54 | NORTHSIDE RADIOLOGY ASSOCIATES LLC | ATLANTA | GA | DIAGNOSTIC RADIOLOGY | 370 | 142 | $429,408 | $3,024 | premium | 6.7% | (404) 851-6577 |
| 55 | CENTRA MEDICAL GROUP LLC | LYNCHBURG | VA | NURSE PRACTITIONER | 714 | 140 | $41,100 | $294 | premium | 5.3% | (434) 947-3033 |
| 56 | RUSH UNIVERSITY MEDICAL GROUP | CHICAGO | IL | PHYSICIAN ASSISTANT | 1496 | 137 | $256,073 | $1,869 | premium | 4.3% | (312) 563-2875 |
| 57 | CLEVELAND CLINIC FLORIDA | WESTON | FL | NURSE PRACTITIONER | 720 | 136 | $345,676 | $2,542 | premium | 2.3% | (954) 659-5000 |
| 58 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 136 | $340,544 | $2,504 | premium | 13.1% | (507) 284-2511 |
| 59 | GRAND TRAVERSE RADIOLOGISTS PC | TRAVERSE CITY | MI | DIAGNOSTIC RADIOLOGY | 32 | 134 | $64,990 | $485 | premium | 7.1% | (231) 935-5000 |
| 60 | DUPAGE MEDICAL GROUP LTD | GLEN ELLYN | IL | PHYSICIAN ASSISTANT | 1323 | 129 | $200,853 | $1,557 | premium | 4.0% | (630) 469-9200 |
| 61 | TEXAS RADIOLOGY ASSOCIATES LLP | PLANO | TX | DIAGNOSTIC RADIOLOGY | 153 | 128 | $514,944 | $4,023 | premium | 3.0% | (469) 814-2000 |
| 62 | RADIA INC P S | SEATTLE | WA | DIAGNOSTIC RADIOLOGY | 270 | 126 | $66,906 | $531 | premium | 6.8% | (206) 320-3700 |
| 63 | UCLA RADIOLOGY MEDICAL GROUP | LOS ANGELES | CA | DIAGNOSTIC RADIOLOGY | 191 | 126 | $397,054 | $3,151 | premium | 1.7% | (310) 301-6800 |
| 64 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 125 | $117,795 | $942 | premium | 4.6% | (252) 752-5000 |
| 65 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 123 | $162,975 | $1,325 | premium | 4.9% | — |
| 66 | MARTIN MEMORIAL MEDICAL CENTER INC | STUART | FL | PHYSICIAN ASSISTANT | 504 | 121 | $247,808 | $2,048 | premium | 2.0% | (772) 223-5665 |
| 67 | TOLEDO RADIOLOGICAL ASSOCIATES INC | COLDWATER | OH | DIAGNOSTIC RADIOLOGY | 51 | 121 | $57,112 | $472 | premium | 4.8% | (517) 279-5400 |
| 68 | PIEDMONT PROVIDERS LLC | ATLANTA | GA | PHYSICIAN ASSISTANT | 509 | 120 | $243,089 | $2,026 | premium | 5.7% | (404) 367-3210 |
| 69 | ARKANSAS HEALTH GROUP | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 666 | 120 | $74,880 | $624 | premium | 12.1% | (501) 202-2093 |
| 70 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 119 | $115,573 | $971 | premium | 5.4% | (617) 724-0287 |
| 71 | RADIOLOGY AND MEDICAL IMAGERY OF NEWNAN PC | NEWNAN | GA | DIAGNOSTIC RADIOLOGY | 35 | 118 | $70,328 | $596 | premium | 5.6% | (770) 400-1000 |
| 72 | BREAST IMAGING RADIOLOGISTS A MEDICAL GROUP INC | LONG BEACH | CA | DIAGNOSTIC RADIOLOGY | 5 | 118 | $100,300 | $850 | premium | 1.6% | (844) 825-9300 |
| 73 | MORAN ROWEN AND DORSEY INC | ORANGE | CA | DIAGNOSTIC RADIOLOGY | 35 | 115 | $67,576 | $588 | premium | 1.5% | (714) 628-3305 |
| 74 | AMERICAN RADIOLOGY CONSULTANTS PLLC | DALLAS | TX | DIAGNOSTIC RADIOLOGY | 121 | 114 | $78,888 | $692 | premium | 2.7% | (214) 820-3216 |
| 75 | RADIOLOGY CONSULTANTS PC | OKLAHOMA CITY | OK | DIAGNOSTIC RADIOLOGY | 23 | 113 | $67,040 | $593 | premium | 8.7% | (405) 384-5250 |
| 76 | BAPTIST HEALTH MEDICAL GROUP INC | LOUISVILLE | KY | NURSE PRACTITIONER | 2448 | 113 | $38,363 | $339 | premium | 12.1% | (502) 928-1050 |
| 77 | FLORIDA HOSPITAL PHYSICIAN GROUP INC | TAMPA | FL | DIAGNOSTIC RADIOLOGY | 891 | 112 | $110,184 | $984 | premium | 1.9% | (813) 615-7075 |
| 78 | HENRY FORD HEALTH SYSTEM | DETROIT | MI | PHYSICIAN ASSISTANT | 2536 | 111 | $57,720 | $520 | premium | 5.9% | (313) 916-2600 |
| 79 | COOPERATIVE HEALTHCARE SERVICES INC | BRUNSWICK | GA | NURSE PRACTITIONER | 228 | 110 | $57,055 | $519 | premium | 5.2% | (912) 466-5400 |
| 80 | RADIOLOGY PHYSICIANS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 61 | 110 | $77,110 | $701 | premium | 4.4% | (937) 208-8000 |
| 81 | PHYSICIANS FOR BREAST HEALTH LLC | SPRINGFIELD | MO | DIAGNOSTIC RADIOLOGY | 6 | 110 | $131,942 | $1,199 | premium | 6.4% | (417) 269-6170 |
| 82 | NORTH SHORE HEMATOLOGY ONCOLOGY ASSOCIATES PC | SMITHTOWN | NY | NURSE PRACTITIONER | 462 | 109 | $313,109 | $2,873 | premium | 1.8% | (631) 751-3000 |
| 83 | LAHEY CLINIC INC | BURLINGTON | MA | NURSE PRACTITIONER | 1400 | 107 | $72,312 | $676 | premium | 4.8% | — |
| 84 | SPECTRUM HEALTHCARE PARTNERS PA | PORTLAND | ME | DIAGNOSTIC RADIOLOGY | 281 | 105 | $64,366 | $613 | premium | 37.9% | (207) 828-2160 |
| 85 | FPA HOSPITAL BASED | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 427 | 105 | $379,470 | $3,614 | premium | 1.7% | (212) 252-6004 |
| 86 | SUMMIT RADIOLOGY SERVICES P C | STOCKBRIDGE | GA | DIAGNOSTIC RADIOLOGY | 67 | 105 | $57,855 | $551 | premium | 5.0% | (678) 604-1000 |
| 87 | ELIZABETH WENDE BREAST CARE LLC | ROCHESTER | NY | DIAGNOSTIC RADIOLOGY | 7 | 104 | $125,105 | $1,203 | premium | 1.7% | (585) 442-2190 |
| 88 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 103 | $43,775 | $425 | premium | 3.9% | (804) 288-8327 |
| 89 | UNIVERSITY OF PITTSBURGH PHYSICIANS | PITTSBURGH | PA | DIAGNOSTIC RADIOLOGY | 4291 | 103 | $73,027 | $709 | premium | 3.0% | — |
| 90 | TEMPLE FACULTY PRACTICE PLAN INC | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 1330 | 103 | $59,740 | $580 | premium | 3.0% | — |
| 91 | NORTHWEST RADIOLOGY ASSOCIATES SC | ARLINGTON HEIGHTS | IL | DIAGNOSTIC RADIOLOGY | 21 | 101 | $62,014 | $614 | premium | 3.2% | (847) 618-1000 |
| 92 | RADIOLOGY OF HUNSTVILLE PC | HUNTSVILLE | AL | DIAGNOSTIC RADIOLOGY | 63 | 100 | $62,000 | $620 | premium | 14.0% | 2565390457145 |
| 93 | CALIFORNIA MANAGED IMAGING MEDICAL GROUP INC | SANTA BARBARA | CA | DIAGNOSTIC RADIOLOGY | 64 | 99 | $396,584 | $4,006 | premium | 1.3% | (800) 841-4236 |
| 94 | DRS HARRIS BIRKHILL WANG SONGE AND ASSOC PC | DEARBORN | MI | DIAGNOSTIC RADIOLOGY | 62 | 99 | $42,471 | $429 | premium | 5.3% | (313) 593-7301 |
| 95 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 96 | $144,960 | $1,510 | premium | 3.5% | (704) 332-1291 |
| 96 | PENINSULA RADIOLOGICAL ASSOCIATES LIMITED | NEWPORT NEWS | VA | DIAGNOSTIC RADIOLOGY | 65 | 96 | $48,864 | $509 | premium | 3.6% | (757) 594-3900 |
| 97 | COMPLETE WOMEN'S IMAGING, PC | GARDEN CITY | NY | DIAGNOSTIC RADIOLOGY | 3 | 96 | $196,040 | $2,042 | premium | 1.6% | (516) 222-4294 |
| 98 | CAPE RADIOLOGY GROUP PC | CAPE GIRARDEAU | MO | DIAGNOSTIC RADIOLOGY | 53 | 95 | $48,260 | $508 | premium | 5.6% | (573) 334-6071 |
| 99 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 95 | $288,538 | $3,037 | premium | 1.3% | (650) 723-4000 |
| 100 | MASS GENERAL BRIGHAM COMMUNITY PHYSICIANS INC | MEDFORD | ME | DIAGNOSTIC RADIOLOGY | 424 | 95 | $48,695 | $513 | premium | 34.3% | (781) 395-4909 |
Showing the top 100 of 623 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 →