A9575 — Injection, gadoterate meglumine, 0.1 ml
16,877,583 observed fee-for-service (52%) · ~15,873,282 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; 1 state 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 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 | A9575 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 1,469,122 | $290,336 | $0 | premium | 29.2% | (631) 225-7200 |
| 2 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 1,331,107 | $1,333,240 | $1 | premium | 29.5% | (617) 724-0287 |
| 3 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 1,306,366 | $783,820 | $1 | premium | 39.8% | (888) 972-9700 |
| 4 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 1,129,833 | $4,180,146 | $4 | premium | 20.9% | (239) 936-2316 |
| 5 | SDMI, LLC | LAS VEGAS | NV | DIAGNOSTIC RADIOLOGY | 36 | 592,236 | $177,108 | $0 | premium | 65.2% | (702) 732-6000 |
| 6 | RADIOLOGY LTD LLC | TUCSON | AZ | DIAGNOSTIC RADIOLOGY | 102 | 546,537 | $710,672 | $1 | premium | 20.3% | (520) 290-4842 |
| 7 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 62 | 487,715 | $292,629 | $1 | premium | 14.9% | (888) 601-0943 |
| 8 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 470,510 | $254,075 | $1 | premium | 9.2% | (858) 455-9100 |
| 9 | RHODE ISLAND MEDICAL IMAGING INC | EAST PROVIDENCE | RI | DIAGNOSTIC RADIOLOGY | 109 | 337,440 | $421,912 | $1 | premium | 83.6% | (401) 626-3900 |
| 10 | MEDICAL SCANNING CONSULTANTS PA | ST LOUIS PARK | MN | DIAGNOSTIC RADIOLOGY | 81 | 316,924 | $1,077,542 | $3 | premium | 32.9% | (952) 541-1840 |
| 11 | DELAWARE RADIOLOGY ASSOCIATES PA | NEWARK | DE | DIAGNOSTIC RADIOLOGY | 56 | 260,610 | $156,366 | $1 | premium | 56.8% | (302) 737-5990 |
| 12 | INNOVATIVE RADIOLOGY PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 31 | 254,851 | $217,620 | $1 | premium | 4.6% | (713) 797-1919 |
| 13 | BEVERLY RADIOLOGY MEDICAL GROUP III | GARDEN GROVE | CA | DIAGNOSTIC RADIOLOGY | 328 | 254,178 | $214,992 | $1 | premium | 5.0% | — |
| 14 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 246,220 | $139,966 | $1 | premium | 25.6% | (507) 284-2511 |
| 15 | RADIOLOGY IMAGING ASSOCIATES | PORT ST LUCIE | FL | DIAGNOSTIC RADIOLOGY | 11 | 234,940 | $140,964 | $1 | premium | 4.3% | (772) 905-3589 |
| 16 | CENTRAL ARKANSAS RADIATION THERAPY INSTITUTE INC | LITTLE ROCK | AR | HEMATOLOGY/ONCOLOGY | 90 | 227,610 | $1,820,896 | $8 | premium | 37.3% | — |
| 17 | HIGHLANDS ONCOLOGY GROUP PA | FAYETTEVILLE | AR | NURSE PRACTITIONER | 79 | 211,361 | $176,563 | $1 | premium | 34.7% | (479) 361-2585 |
| 18 | SMI IMAGING LLC | PHOENIX | AZ | DIAGNOSTIC RADIOLOGY | 364 | 199,190 | $199,190 | $1 | premium | 7.4% | (480) 753-6161 |
| 19 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 244 | 184,270 | $110,562 | $1 | premium | 3.7% | (212) 772-3111 |
| 20 | LAKE MEDICAL IMAGING AND BREAST CENTER AT THE VILLAGES LLC | LEESBURG | FL | DIAGNOSTIC RADIOLOGY | 22 | 183,737 | $36,747 | $0 | premium | 3.4% | (352) 787-5858 |
| 21 | TOLEDO CLINIC INCORPORATED | TOLEDO | OH | NURSE PRACTITIONER | 217 | 178,156 | $178,156 | $1 | premium | 15.8% | (419) 874-3246 |
| 22 | SPRINGFIELD CLINIC, LLP | SPRINGFIELD | IL | NURSE PRACTITIONER | 686 | 173,265 | $110,890 | $1 | premium | 26.6% | (217) 544-6464 |
| 23 | MEDICAL SCANNING CONSULTANTS PA | ST LOUIS PARK | IN | DIAGNOSTIC RADIOLOGY | 81 | 168,069 | $571,435 | $3 | premium | 55.2% | (952) 541-1840 |
| 24 | MILLENNIUM PHYSICIAN GROUP LLC | PORT CHARLOTTE | FL | PHYSICIAN ASSISTANT | 953 | 168,045 | $41,589 | $0 | premium | 3.1% | (941) 255-3535 |
| 25 | REVERE HEALTH PC | PROVO | UT | PHYSICIAN ASSISTANT | 410 | 152,709 | $145,266 | $1 | premium | 57.2% | — |
| 26 | REGIONAL MEDICAL IMAGING PC | FLINT | MI | DIAGNOSTIC RADIOLOGY | 22 | 143,093 | $64,392 | $0 | premium | 36.5% | (810) 732-8870 |
| 27 | WINDSONG RADIOLOGY GROUP P C | WILLIAMSVILLE | NY | DIAGNOSTIC RADIOLOGY | 23 | 141,333 | $706,665 | $5 | premium | 2.8% | (716) 631-2500 |
| 28 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | DC | DIAGNOSTIC RADIOLOGY | 62 | 130,200 | $78,120 | $1 | premium | 26.3% | (888) 601-0943 |
| 29 | EAST RIVER MEDICAL IMAGING PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 10 | 119,464 | $209,062 | $2 | premium | 2.4% | (212) 288-7615 |
| 30 | HOLSTON MEDICAL GROUP PC | BRISTOL | TN | NURSE PRACTITIONER | 244 | 118,640 | $35,592 | $0 | premium | 21.4% | (423) 844-7000 |
| 31 | MEDICAL ASSOCIATES OF NORTHWEST ARKANSAS, PA | FAYETTEVILLE | AR | FAMILY PRACTICE | 106 | 102,640 | $102,550 | $1 | premium | 16.8% | (479) 521-0200 |
| 32 | ADVANCED RADIOLOGY P A | BALTIMORE | OH | DIAGNOSTIC RADIOLOGY | 161 | 99,561 | $59,737 | $1 | premium | 8.8% | (888) 972-9700 |
| 33 | ATRIUS HEALTH INC | BOSTON | MA | NURSE PRACTITIONER | 1196 | 99,154 | $61,475 | $1 | premium | 2.2% | (617) 421-1000 |
| 34 | BLACKWELL PHYSICIANS, LLC | ROCKVILLE | MD | DIAGNOSTIC RADIOLOGY | 67 | 95,080 | $171,144 | $2 | premium | 2.9% | (240) 826-6074 |
| 35 | THE NEW JERSEY IMAGING NETWORK, LLC | CEDAR KNOLLS | NJ | DIAGNOSTIC RADIOLOGY | 71 | 93,640 | $56,184 | $1 | premium | 2.1% | (973) 695-1290 |
| 36 | ADVANCED RADIOLOGY P A | BALTIMORE | DC | DIAGNOSTIC RADIOLOGY | 161 | 89,875 | $53,925 | $1 | premium | 18.2% | (888) 972-9700 |
| 37 | ADIRONDACK RADIOLOGY ASSOCIATES PC | SARATOGA SPRINGS | NY | DIAGNOSTIC RADIOLOGY | 18 | 86,861 | $86,861 | $1 | premium | 1.7% | (518) 587-7773 |
| 38 | UNIVERSITY RADIOLOGY GROUP LLC | EAST BRUNSWICK | NJ | DIAGNOSTIC RADIOLOGY | 244 | 84,760 | $16,952 | $0 | premium | 1.9% | 73239000402022 |
| 39 | SOUTHWEST DIAGNOSTIC IMAGING LLC | SCOTTSDALE | AZ | DIAGNOSTIC RADIOLOGY | 124 | 84,660 | $169,320 | $2 | premium | 3.1% | (480) 425-5000 |
| 40 | EPIC IMAGING PC | CLACKAMAS | OR | DIAGNOSTIC RADIOLOGY | 6 | 84,223 | $286,358 | $3 | premium | 53.2% | (877) 540-1614 |
| 41 | IMAGE GUIDED PAIN MANAGEMENT, P.C. | ROANOKE | VA | DIAGNOSTIC RADIOLOGY | 4 | 82,541 | $280,639 | $3 | premium | 7.2% | (540) 581-0882 |
| 42 | MEDICAL SCANNING CONSULTANTS PA | ST LOUIS PARK | WA | DIAGNOSTIC RADIOLOGY | 81 | 78,580 | $267,172 | $3 | premium | 10.0% | (952) 541-1840 |
| 43 | SHARP REES-STEALY MEDICAL GROUP INC | SAN DIEGO | CA | PHYSICIAN ASSISTANT | 872 | 77,840 | $155,738 | $2 | premium | 1.5% | (858) 499-2600 |
| 44 | MEDICAL SCANNING CONSULTANTS PA | ST LOUIS PARK | FL | DIAGNOSTIC RADIOLOGY | 81 | 76,931 | $261,565 | $3 | premium | 1.4% | (952) 541-1840 |
| 45 | WASHINGTON RADIOLOGY ASSOC PLLC | WASHINGTON | DC | DIAGNOSTIC RADIOLOGY | 38 | 70,999 | $283,996 | $4 | premium | 14.4% | (202) 223-9722 |
| 46 | TEXAS NEUROLOGY PA | DALLAS | TX | NEUROLOGY | 13 | 68,820 | $44,733 | $1 | premium | 1.3% | (214) 827-3610 |
| 47 | ADVANCED RADIOLOGY P A | BALTIMORE | NY | DIAGNOSTIC RADIOLOGY | 161 | 67,681 | $40,609 | $1 | premium | 1.3% | (888) 972-9700 |
| 48 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | WA | DIAGNOSTIC RADIOLOGY | 62 | 67,568 | $40,541 | $1 | premium | 8.6% | (888) 601-0943 |
| 49 | VALLEY RADIOLOGY MEDICAL ASSOCIATES INC | SAN JOSE | CA | DIAGNOSTIC RADIOLOGY | 25 | 65,100 | $39,060 | $1 | premium | 1.3% | (408) 358-6881 |
| 50 | ADVANCED RADIOLOGY P A | BALTIMORE | AZ | DIAGNOSTIC RADIOLOGY | 161 | 60,685 | $36,411 | $1 | premium | 2.3% | (888) 972-9700 |
| 51 | ARIZONA DIAGNOSTIC RADIOLOGY GROUP LLC | GILBERT | AZ | DIAGNOSTIC RADIOLOGY | 60 | 60,604 | $38,123 | $1 | premium | 2.3% | (480) 354-9200 |
| 52 | CLEVELAND CLINIC FLORIDA | WESTON | FL | NURSE PRACTITIONER | 720 | 59,189 | $99,388 | $2 | premium | 1.1% | (954) 659-5000 |
| 53 | DIAGNOSTIC IMAGING CENTERS PA | KANSAS CITY | MO | DIAGNOSTIC RADIOLOGY | 28 | 55,179 | $107,040 | $2 | premium | 11.8% | (816) 444-9989 |
| 54 | BORG AND IDE IMAGING PC | ROCHESTER | NY | DIAGNOSTIC RADIOLOGY | 14 | 54,274 | $32,564 | $1 | premium | 1.1% | (585) 241-6600 |
| 55 | KERN RADIOLOGY MEDICAL GROUP INC | BAKERSFIELD | CA | DIAGNOSTIC RADIOLOGY | 87 | 54,090 | $32,672 | $1 | premium | 1.1% | (661) 616-1458 |
| 56 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 53,800 | $19,989 | $0 | premium | 2.0% | (800) 603-0558 |
| 57 | SOUTH FLORIDA MEDICAL IMAGING PA | FORT LAUDERDALE | FL | DIAGNOSTIC RADIOLOGY | 44 | 52,700 | $207,808 | $4 | premium | 1.0% | (954) 267-6650 |
| 58 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 50,986 | $61,066 | $1 | premium | 1.0% | (914) 241-1050 |
| 59 | PRINCETON RADIOLOGY ASSOCIATES PA | PRINCETON | NJ | DIAGNOSTIC RADIOLOGY | 54 | 50,234 | $11,051 | $0 | premium | 1.1% | 73282155631242 |
| 60 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 47,750 | $28,650 | $1 | premium | 7.3% | — |
| 61 | NEUROLOGY CLINIC, PC | CORDOVA | TN | NEUROLOGY | 10 | 47,200 | $94,200 | $2 | premium | 8.5% | 9017471111131 |
| 62 | MAYO CLINIC | ROCHESTER | AL | NURSE PRACTITIONER | 4896 | 46,600 | $25,920 | $1 | premium | 11.4% | (507) 284-2511 |
| 63 | ADVANCED RADIOLOGY P A | BALTIMORE | PA | DIAGNOSTIC RADIOLOGY | 161 | 46,000 | $27,600 | $1 | premium | 3.3% | (888) 972-9700 |
| 64 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 45,735 | $5,946 | $0 | premium | 7.2% | (252) 752-5000 |
| 65 | ADVANCED RADIOLOGY P A | BALTIMORE | ID | DIAGNOSTIC RADIOLOGY | 161 | 44,180 | $26,508 | $1 | premium | 27.1% | (888) 972-9700 |
| 66 | MARYLAND IMAGING NETWORK PC | PRINCE FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 75 | 42,920 | $25,752 | $1 | premium | 1.3% | (410) 535-4111 |
| 67 | CANCER CENTER OF KANSAS PA | WICHITA | KS | HEMATOLOGY/ONCOLOGY | 27 | 40,577 | $40,577 | $1 | premium | 9.8% | (316) 262-4467 |
| 68 | NORTHERN ARIZONA RADIOLOGY P C | FLAGSTAFF | AZ | DIAGNOSTIC RADIOLOGY | 11 | 40,400 | $40,400 | $1 | premium | 1.5% | (928) 779-3366 |
| 69 | GRAVES GILBERT CLINIC PLLC | BOWLING GREEN | KY | NURSE PRACTITIONER | 221 | 39,555 | $237,330 | $6 | premium | 40.6% | (270) 781-4043 |
| 70 | MARYLAND IMAGING NETWORK PC | PRINCE FREDERICK | PA | DIAGNOSTIC RADIOLOGY | 75 | 38,924 | $23,354 | $1 | premium | 2.8% | (410) 535-4111 |
| 71 | PARTNERS IMAGING CENTER OF SARASOTA LLC | SARASOTA | FL | DIAGNOSTIC RADIOLOGY | 13 | 38,585 | $60,022 | $2 | premium | 0.7% | (941) 951-2100 |
| 72 | FLORIDA RADIOLOGY ASSOCIATES LLC | SARASOTA | FL | DIAGNOSTIC RADIOLOGY | 63 | 37,880 | $134,980 | $4 | premium | 0.7% | (469) 757-1042 |
| 73 | DELAWARE RADIOLOGY ASSOCIATES PA | NEWARK | PA | DIAGNOSTIC RADIOLOGY | 56 | 36,365 | $21,819 | $1 | premium | 2.6% | (302) 737-5990 |
| 74 | RADIOLOGY CONSULTANTS OF WASHINGTON INC PS | ISSAQUAH | WA | DIAGNOSTIC RADIOLOGY | 10 | 35,902 | $122,067 | $3 | premium | 4.6% | (425) 600-1054 |
| 75 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | KS | DIAGNOSTIC RADIOLOGY | 62 | 34,920 | $20,952 | $1 | premium | 8.4% | (888) 601-0943 |
| 76 | TOWER HEALTH MEDICAL GROUP | WEST READING | PA | INTERNAL MEDICINE | 590 | 34,630 | $4,156 | $0 | premium | 2.5% | (484) 628-5455 |
| 77 | VALLEY RADIOLOGY MEDICAL ASSOCIATES INC | SAN JOSE | NY | DIAGNOSTIC RADIOLOGY | 25 | 34,110 | $20,756 | $1 | premium | 0.7% | (408) 358-6881 |
| 78 | H LEE MOFFITT CANCER CTR AND RES INST LIFE TIME CANCER SCRN CTR INC | TAMPA | FL | PHYSICIAN ASSISTANT | 1103 | 32,514 | $32,514 | $1 | premium | 0.6% | (813) 745-4673 |
| 79 | INDIAN RIVER MRI INC | VERO BEACH | FL | DIAGNOSTIC RADIOLOGY | 6 | 32,304 | $32,304 | $1 | premium | 0.6% | (772) 562-3030 |
| 80 | SMI IMAGING LLC | PHOENIX | WA | DIAGNOSTIC RADIOLOGY | 364 | 31,893 | $31,893 | $1 | premium | 4.1% | (480) 753-6161 |
| 81 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | MI | NURSE PRACTITIONER | 4339 | 31,024 | $18,614 | $1 | premium | 7.9% | — |
| 82 | PHYSICIANS CLINIC OF IOWA PC | CEDAR RAPIDS | IA | NURSE PRACTITIONER | 132 | 30,350 | $30,350 | $1 | premium | 11.1% | (319) 247-3010 |
| 83 | INNOVATIVE RADIOLOGY PA | HOUSTON | NY | DIAGNOSTIC RADIOLOGY | 31 | 30,276 | $24,561 | $1 | premium | 0.6% | (713) 797-1919 |
| 84 | SIERRA NEUROSURGERY GROUP | RENO | NV | NURSE PRACTITIONER | 24 | 29,740 | $32,119 | $1 | premium | 3.3% | (775) 323-2080 |
| 85 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | NC | DIAGNOSTIC RADIOLOGY | 62 | 29,705 | $17,823 | $1 | premium | 4.7% | (888) 601-0943 |
| 86 | QUANTUM IMAGING AND THERAPEUTIC ASSOCIATES INC | HARRISBURG | NJ | DIAGNOSTIC RADIOLOGY | 90 | 29,241 | $21,634 | $1 | premium | 0.6% | (717) 932-5200 |
| 87 | SIMONMED IMAGING FLORIDA LLC | ORLANDO | FL | DIAGNOSTIC RADIOLOGY | 273 | 28,506 | $33,456 | $1 | premium | 0.5% | (407) 608-6800 |
| 88 | SCRIPPS HEALTH | LA JOLLA | GA | PHYSICIAN ASSISTANT | 1431 | 27,490 | $14,845 | $1 | premium | 2.6% | (858) 455-9100 |
| 89 | MEDICAL TECHNOLOGY TRANSFER CORPORATION | MELBOURNE | FL | DIAGNOSTIC RADIOLOGY | 7 | 27,450 | $20,010 | $1 | premium | 0.5% | (321) 726-3855 |
| 90 | TRIAD RADIOLOGY ASSOCIATES PLLC | WINSTON SALEM | TN | DIAGNOSTIC RADIOLOGY | 78 | 27,390 | $11,641 | $0 | premium | 4.9% | (336) 718-7800 |
| 91 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | PA | DIAGNOSTIC RADIOLOGY | 91 | 27,040 | $5,362 | $0 | premium | 1.9% | (631) 225-7200 |
| 92 | INNOVIS HEALTH LLC | FARGO | ND | NURSE PRACTITIONER | 565 | 27,020 | $11,648 | $0 | premium | 62.7% | (701) 364-6600 |
| 93 | RAVI PATEL M D INC | BAKERSFIELD | CA | HEMATOLOGY/ONCOLOGY | 20 | 27,000 | $27,000 | $1 | premium | 0.5% | (661) 322-2206 |
| 94 | ELITE IMAGING LLC | PLANTATION | FL | DIAGNOSTIC RADIOLOGY | 124 | 26,926 | $33,119 | $1 | premium | 0.5% | (954) 449-7023 |
| 95 | ADVANCED RADIOLOGY P A | BALTIMORE | NC | DIAGNOSTIC RADIOLOGY | 161 | 26,893 | $16,136 | $1 | premium | 4.2% | (888) 972-9700 |
| 96 | SUMMIT MEDICAL GROUP PA | BERKELEY HEIGHTS | NJ | PHYSICIAN ASSISTANT | 1183 | 25,577 | $25,577 | $1 | premium | 0.6% | (908) 273-4300 |
| 97 | VALLEY RADIOLOGY CONSULTANTS MEDICAL GROUP INC | ESCONDIDO | CA | DIAGNOSTIC RADIOLOGY | 10 | 25,122 | $47,732 | $2 | premium | 0.5% | (760) 520-8500 |
| 98 | INTELLIRAD IMAGING LLC | MIAMI | CA | DIAGNOSTIC RADIOLOGY | 61 | 23,710 | $12,803 | $1 | premium | 0.5% | (305) 854-4400 |
| 99 | ADVANCED RADIOLOGY P A | BALTIMORE | DE | DIAGNOSTIC RADIOLOGY | 161 | 23,706 | $14,224 | $1 | premium | 5.2% | (888) 972-9700 |
| 100 | SCRIPPS HEALTH | LA JOLLA | OK | PHYSICIAN ASSISTANT | 1431 | 23,480 | $12,679 | $1 | premium | 8.6% | (858) 455-9100 |
Showing the top 100 of 231 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 →