10,840 observed fee-for-service (49%) · ~11,273 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 | 70547 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 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 726 | $1,093,422 | $1,506 | premium | 11.0% | (212) 263-9700 |
| 2 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 640 | $189,440 | $296 | premium | 61.0% | (704) 362-1945 |
| 3 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 605 | $666,554 | $1,102 | premium | 9.1% | (631) 225-7200 |
| 4 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 103 | 419 | $178,802 | $427 | premium | 17.7% | (281) 206-9020 |
| 5 | MORI BEAN AND BROOKS INC | ORANGE PARK | FL | DIAGNOSTIC RADIOLOGY | 947 | 397 | $174,283 | $439 | premium | 17.1% | (904) 399-5550 |
| 6 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 345 | $308,230 | $893 | premium | 10.8% | (650) 723-4000 |
| 7 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 344 | $78,088 | $227 | premium | 30.2% | — |
| 8 | STONY BROOK RADIOLOGY, UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | DIAGNOSTIC RADIOLOGY | 59 | 313 | $229,783 | $734 | premium | 4.7% | (631) 638-2121 |
| 9 | MEDICAL SERVICES OF KIPS BAY PC | GREAT NECK | NY | DIAGNOSTIC RADIOLOGY | 14 | 222 | $690,420 | $3,110 | premium | 3.4% | (516) 487-4464 |
| 10 | NORTH METROPOLITAN RADIOLOGY ASSOCIATES LLP | LAWRENCEVILLE | GA | DIAGNOSTIC RADIOLOGY | 44 | 208 | $64,109 | $308 | premium | 22.8% | (678) 312-0900 |
| 11 | NORTH COUNTRY NEUROLOGY PC | WATERTOWN | NY | NEUROLOGY | 5 | 184 | $423,200 | $2,300 | premium | 2.8% | (315) 782-9003 |
| 12 | MONTEFIORE MEDICAL CENTER | BRONX | NY | PHYSICAL THERAPIST IN PRIVATE PRACTICE | 2796 | 184 | $132,465 | $720 | premium | 2.8% | (866) 633-8255 |
| 13 | SILICON VALLEY MEDICAL IMAGING INC A MEDICAL CORPORATION | FREMONT | CA | NUCLEAR MEDICINE | 3 | 175 | $233,800 | $1,336 | premium | 5.5% | (510) 792-9700 |
| 14 | NEW YORK UNIVERSITY | NEW YORK | CO | DIAGNOSTIC RADIOLOGY | 5704 | 166 | $295,760 | $1,782 | premium | 72.5% | (212) 263-9700 |
| 15 | SDMI, LLC | LAS VEGAS | NV | DIAGNOSTIC RADIOLOGY | 36 | 164 | $196,782 | $1,200 | premium | 33.5% | (702) 732-6000 |
| 16 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 147 | $22,785 | $155 | premium | 18.9% | (804) 288-8327 |
| 17 | RADIOLOGY ASSOCIATES OF RICHMOND INC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 70 | 128 | $22,706 | $177 | premium | 16.5% | (804) 272-8806 |
| 18 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | MD | NURSE PRACTITIONER | 2232 | 127 | $28,829 | $227 | premium | 9.0% | — |
| 19 | LAKELAND RADIOLOGISTS P A | FLOWOOD | MS | DIAGNOSTIC RADIOLOGY | 29 | 127 | $41,910 | $330 | premium | 52.9% | (601) 936-2390 |
| 20 | NEW YORK UNIVERSITY | NEW YORK | PA | DIAGNOSTIC RADIOLOGY | 5704 | 120 | $238,785 | $1,990 | premium | 11.5% | (212) 263-9700 |
| 21 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 118 | $32,024 | $271 | premium | 8.3% | (888) 972-9700 |
| 22 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 113 | $31,753 | $281 | premium | 10.8% | (704) 332-1291 |
| 23 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | AZ | DIAGNOSTIC RADIOLOGY | 244 | 111 | $26,472 | $238 | premium | 9.6% | (212) 772-3111 |
| 24 | NEW YORK UNIVERSITY | NEW YORK | WA | DIAGNOSTIC RADIOLOGY | 5704 | 111 | $210,026 | $1,892 | premium | 46.4% | (212) 263-9700 |
| 25 | PACIFIC RADIOLOGY GROUP INC | KAILUA | HI | DIAGNOSTIC RADIOLOGY | 29 | 110 | $20,900 | $190 | premium | 33.4% | (808) 263-5500 |
| 26 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 100 | $23,900 | $239 | premium | 4.2% | (817) 321-0470 |
| 27 | KERN RADIOLOGY MEDICAL GROUP INC | BAKERSFIELD | CA | DIAGNOSTIC RADIOLOGY | 87 | 100 | $57,076 | $571 | premium | 3.1% | (661) 616-1458 |
| 28 | NEURO IR OF EAST TEXAS | TYLER | TX | DIAGNOSTIC RADIOLOGY | 3 | 93 | $26,877 | $289 | premium | 3.9% | (903) 705-0072 |
| 29 | RADIOLOGY OF HUNSTVILLE PC | HUNTSVILLE | AL | DIAGNOSTIC RADIOLOGY | 63 | 88 | $18,216 | $207 | premium | 18.1% | 2565390457145 |
| 30 | FPA HOSPITAL BASED | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 427 | 82 | $22,386 | $273 | premium | 1.2% | (212) 252-6004 |
| 31 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 77 | $23,936 | $311 | premium | 2.4% | (916) 983-7476 |
| 32 | NEW YORK UNIVERSITY | NEW YORK | MN | DIAGNOSTIC RADIOLOGY | 5704 | 76 | $32,832 | $432 | premium | 16.2% | (212) 263-9700 |
| 33 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | DC | DIAGNOSTIC RADIOLOGY | 62 | 75 | $90,675 | $1,209 | premium | 18.4% | (888) 601-0943 |
| 34 | NORTHSIDE RADIOLOGY ASSOCIATES LLC | ATLANTA | GA | DIAGNOSTIC RADIOLOGY | 370 | 75 | $69,300 | $924 | premium | 8.2% | (404) 851-6577 |
| 35 | GREENSBORO RADIOLOGY, PA | GREENSBORO | NC | DIAGNOSTIC RADIOLOGY | 221 | 72 | $66,528 | $924 | premium | 6.9% | (336) 274-6682 |
| 36 | RWJBH OBSERVATION ASSOCIATES LLC | SOMERVILLE | NJ | PHYSICIAN ASSISTANT | 937 | 67 | $24,120 | $360 | premium | 5.7% | (908) 685-2200 |
| 37 | EAST RIVER MEDICAL IMAGING PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 10 | 65 | $123,500 | $1,900 | premium | 1.0% | (212) 288-7615 |
| 38 | REGENTS OF THE UNIV OF CA | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 1608 | 65 | $22,230 | $342 | premium | 2.0% | (877) 827-7463 |
| 39 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 62 | 61 | $73,749 | $1,209 | premium | 4.3% | (888) 601-0943 |
| 40 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | MI | NURSE PRACTITIONER | 2232 | 61 | $13,847 | $227 | premium | 32.3% | — |
| 41 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | MA | NURSE PRACTITIONER | 2232 | 60 | $13,620 | $227 | premium | 10.1% | — |
| 42 | FLORIDA HOSPITAL MEDICAL GROUP INC | ORLANDO | FL | DIAGNOSTIC RADIOLOGY | 321 | 60 | $10,380 | $173 | premium | 2.6% | (407) 303-5600 |
| 43 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | IN | DIAGNOSTIC RADIOLOGY | 103 | 58 | $24,716 | $426 | premium | 47.9% | (281) 206-9020 |
| 44 | MORI BEAN AND BROOKS INC | ORANGE PARK | DE | DIAGNOSTIC RADIOLOGY | 947 | 57 | $25,023 | $439 | premium | 10.7% | (904) 399-5550 |
| 45 | PROFESSIONAL SERVICES OF HOLY CROSS | SILVER SPRING | MD | PHYSICIAN ASSISTANT | 156 | 56 | $7,004 | $125 | premium | 3.9% | (301) 754-7000 |
| 46 | MEMPHIS RADIOLOGICAL PC | MEMPHIS | TN | DIAGNOSTIC RADIOLOGY | 51 | 56 | $23,408 | $418 | premium | 9.3% | (901) 561-6000 |
| 47 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | PA | NURSE PRACTITIONER | 2232 | 55 | $12,485 | $227 | premium | 5.3% | — |
| 48 | CAPITAL HEALTH MULTISPECIALTY GROUP | PENNINGTON | NJ | INTERNAL MEDICINE | 338 | 55 | $241,560 | $4,392 | premium | 4.6% | (609) 303-4000 |
| 49 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 48 | $34,881 | $727 | premium | 1.5% | (916) 681-8852 |
| 50 | NORTH GEORGIA RADIOLOGY | DALTON | GA | DIAGNOSTIC RADIOLOGY | 36 | 48 | $15,264 | $318 | premium | 5.3% | (706) 278-7224 |
| 51 | LONG ISLAND NEUROLOGY CONSULTANTS | LYNBROOK | NY | NEUROLOGY | 8 | 44 | $12,425 | $282 | premium | 0.7% | 5168873516108 |
| 52 | STRAUB CLINIC AND HOSPITAL | HONOLULU | HI | NURSE PRACTITIONER | 431 | 43 | $6,192 | $144 | premium | 13.1% | (808) 522-4000 |
| 53 | RADIOLOGY ASSOCIATES OF RICHMOND INC | RICHMOND | UT | DIAGNOSTIC RADIOLOGY | 70 | 42 | $7,450 | $177 | premium | 25.6% | (804) 272-8806 |
| 54 | SMI IMAGING LLC | PHOENIX | AZ | DIAGNOSTIC RADIOLOGY | 364 | 42 | $68,712 | $1,636 | premium | 3.6% | (480) 753-6161 |
| 55 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 42 | $23,662 | $563 | premium | 25.6% | (801) 261-8346 |
| 56 | PALM DESERT RADIOLOGY MEDICAL GROUP INC | RANCHO MIRAGE | CA | DIAGNOSTIC RADIOLOGY | 125 | 42 | $17,864 | $425 | premium | 1.3% | (760) 773-1251 |
| 57 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | FL | DIAGNOSTIC RADIOLOGY | 218 | 41 | $12,136 | $296 | premium | 1.8% | (704) 362-1945 |
| 58 | SIMONMED IMAGING FLORIDA LLC | ORLANDO | FL | DIAGNOSTIC RADIOLOGY | 273 | 40 | $56,834 | $1,421 | premium | 1.7% | (407) 608-6800 |
| 59 | BLACKWELL PHYSICIANS, LLC | ROCKVILLE | NC | DIAGNOSTIC RADIOLOGY | 67 | 40 | $23,586 | $590 | premium | 3.8% | (240) 826-6074 |
| 60 | FIVE TOWNS NEUROLOGY, PC | WOODMERE | NY | DIAGNOSTIC RADIOLOGY | 3 | 39 | $28,505 | $731 | premium | 0.6% | (516) 239-1800 |
| 61 | ANCILLARY SERVICES OF PRACTICE ASSOCIATES PA | MORRISTOWN | NJ | DIAGNOSTIC RADIOLOGY | 97 | 37 | $7,630 | $206 | premium | 3.1% | (973) 971-6866 |
| 62 | SOUTHWEST NEURO-IMAGING LTD | PHOENIX | AZ | DIAGNOSTIC RADIOLOGY | 8 | 36 | $9,360 | $260 | premium | 3.1% | (602) 954-6228 |
| 63 | MERCY DIAGNOSTIC IMAGING PC | WILMINGTON | DE | DIAGNOSTIC RADIOLOGY | 74 | 36 | $7,099 | $197 | premium | 6.8% | (610) 237-4814 |
| 64 | SMI IMAGING LLC | PHOENIX | WA | DIAGNOSTIC RADIOLOGY | 364 | 35 | $60,755 | $1,736 | premium | 14.6% | (480) 753-6161 |
| 65 | THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS | CHICAGO | IL | NURSE PRACTITIONER | 1170 | 34 | $10,956 | $322 | premium | 8.5% | — |
| 66 | SINAI HOSPITAL OF BALTIMORE, INC | BALTIMORE | MD | PHYSICIAN ASSISTANT | 386 | 34 | $9,690 | $285 | premium | 2.4% | — |
| 67 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | KY | DIAGNOSTIC RADIOLOGY | 243 | 32 | $8,160 | $255 | premium | 64.0% | (614) 566-5600 |
| 68 | EAST VALLEY RADIOLOGY ASSOCIATES PLLC | CHANDLER | TX | DIAGNOSTIC RADIOLOGY | 31 | 32 | $14,336 | $448 | premium | 1.4% | (480) 728-3000 |
| 69 | MERCY DIAGNOSTIC IMAGING PC | WILMINGTON | MD | DIAGNOSTIC RADIOLOGY | 74 | 32 | $5,928 | $185 | premium | 2.3% | (610) 237-4814 |
| 70 | TOWER HEALTH MEDICAL GROUP | WEST READING | PA | INTERNAL MEDICINE | 590 | 31 | $5,673 | $183 | premium | 3.0% | (484) 628-5455 |
| 71 | CHRISTIANA CARE HEALTH SERVICES INC | NEWARK | DE | PHYSICIAN ASSISTANT | 1537 | 30 | $7,694 | $256 | premium | 5.6% | — |
| 72 | VALLEY RADIOLOGY MEDICAL ASSOCIATES INC | SAN JOSE | CA | DIAGNOSTIC RADIOLOGY | 25 | 30 | $36,270 | $1,209 | premium | 0.9% | (408) 358-6881 |
| 73 | SINGLETON ASSOCIATES PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 769 | 30 | $27,720 | $924 | premium | 1.3% | (855) 504-4544 |
| 74 | CAPITAL HEALTH MULTISPECIALTY GROUP | PENNINGTON | CT | INTERNAL MEDICINE | 338 | 30 | $131,760 | $4,392 | premium | 19.6% | (609) 303-4000 |
| 75 | ALABAMA MEDICAL GROUP PC | MOBILE | AL | PHYSICIAN ASSISTANT | 40 | 29 | $18,908 | $652 | premium | 6.0% | (251) 414-5900 |
| 76 | SOUTH TEXAS RADIOLOGY GROUP PA | SAN ANTONIO | TX | DIAGNOSTIC RADIOLOGY | 80 | 29 | $6,786 | $234 | premium | 1.2% | (210) 736-8400 |
| 77 | DIAGNOSTIC IMAGING CONSULTANTS INC | RINGGOLD | TN | DIAGNOSTIC RADIOLOGY | 15 | 28 | $4,676 | $167 | premium | 4.6% | (866) 730-5619 |
| 78 | DIAGNOSTIC IMAGING ASSOCIATES PA | VICTORIA | TX | DIAGNOSTIC RADIOLOGY | 4 | 28 | $5,656 | $202 | premium | 1.2% | (361) 573-6100 |
| 79 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | MD | DIAGNOSTIC RADIOLOGY | 103 | 27 | $11,484 | $425 | premium | 1.9% | (281) 206-9020 |
| 80 | AMERICAN RADIOLOGY CONSULTANTS PLLC | DALLAS | TX | DIAGNOSTIC RADIOLOGY | 121 | 27 | $5,778 | $214 | premium | 1.1% | (214) 820-3216 |
| 81 | ALLEGANY IMAGING PC | CUMBERLAND | MD | DIAGNOSTIC RADIOLOGY | 10 | 27 | $6,318 | $234 | premium | 1.9% | (240) 964-1036 |
| 82 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | OH | DIAGNOSTIC RADIOLOGY | 218 | 27 | $7,992 | $296 | premium | 2.4% | (704) 362-1945 |
| 83 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | NJ | DIAGNOSTIC RADIOLOGY | 244 | 27 | $31,609 | $1,171 | premium | 2.3% | (212) 772-3111 |
| 84 | RIVER CITY IMAGING ASSOCIATES PA | SAN ANTONIO | TX | DIAGNOSTIC RADIOLOGY | 22 | 27 | $7,263 | $269 | premium | 1.1% | (210) 704-2011 |
| 85 | RADIOLOGY SPECIALISTS LTD MARASSO-MILLER | LAS VEGAS | NV | DIAGNOSTIC RADIOLOGY | 121 | 27 | $24,948 | $924 | premium | 5.5% | (866) 722-1655 |
| 86 | FLORIDA HOSPITAL MEDICAL GROUP INC | ORLANDO | TX | DIAGNOSTIC RADIOLOGY | 321 | 27 | $4,671 | $173 | premium | 1.1% | (407) 303-5600 |
| 87 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 26 | $14,680 | $565 | premium | 2.2% | (800) 603-0558 |
| 88 | DELAWARE RADIOLOGY ASSOCIATES PA | NEWARK | DE | DIAGNOSTIC RADIOLOGY | 56 | 26 | $28,809 | $1,108 | premium | 4.9% | (302) 737-5990 |
| 89 | VALLEY RADIOLOGY MEDICAL ASSOCIATES INC | SAN JOSE | NY | DIAGNOSTIC RADIOLOGY | 25 | 25 | $30,225 | $1,209 | premium | 0.4% | (408) 358-6881 |
| 90 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | AL | DIAGNOSTIC RADIOLOGY | 103 | 25 | $10,673 | $427 | premium | 5.2% | (281) 206-9020 |
| 91 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 25 | $4,494 | $180 | premium | 2.4% | — |
| 92 | BAYHEALTH RADIOLOGISTS LLC | DOVER | DE | DIAGNOSTIC RADIOLOGY | 93 | 25 | $4,594 | $184 | premium | 4.7% | (610) 892-8889 |
| 93 | EAST VALLEY RADIOLOGY ASSOCIATES PLLC | CHANDLER | IN | DIAGNOSTIC RADIOLOGY | 31 | 24 | $10,752 | $448 | premium | 19.8% | (480) 728-3000 |
| 94 | ADVANCED RADIOLOGY P A | BALTIMORE | DC | DIAGNOSTIC RADIOLOGY | 161 | 24 | $4,200 | $175 | premium | 5.9% | (888) 972-9700 |
| 95 | QUANTUM RADIOLOGY PC | MARIETTA | GA | DIAGNOSTIC RADIOLOGY | 104 | 23 | $6,578 | $286 | premium | 2.5% | (770) 732-4000 |
| 96 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 23 | $13,559 | $590 | premium | 12.2% | (616) 363-7272 |
| 97 | EAST VALLEY RADIOLOGY ASSOCIATES PLLC | CHANDLER | OH | DIAGNOSTIC RADIOLOGY | 31 | 23 | $10,304 | $448 | premium | 2.0% | (480) 728-3000 |
| 98 | CENTRAL ILLINOIS RADIOLOGICAL ASSOCIATES LTD | PEORIA | IL | DIAGNOSTIC RADIOLOGY | 196 | 22 | $11,660 | $530 | premium | 5.5% | (309) 655-2000 |
| 99 | DRS HARRIS BIRKHILL WANG SONGE AND ASSOC PC | DEARBORN | MI | DIAGNOSTIC RADIOLOGY | 62 | 22 | $11,433 | $520 | premium | 11.6% | (313) 593-7301 |
| 100 | REGENTS OF THE UNIV OF CA | SACRAMENTO | OR | DIAGNOSTIC RADIOLOGY | 1608 | 22 | $7,524 | $342 | premium | 21.6% | (877) 827-7463 |
Showing the top 100 of 127 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 →