11,452 observed fee-for-service (50%) · ~11,656 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 | 93653 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 | 209 | $2,255,110 | $10,790 | premium | 18.7% | (212) 263-9700 |
| 2 | ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI | NEW YORK | NY | PHYSICIAN ASSISTANT | 2818 | 181 | $657,030 | $3,630 | premium | 16.2% | (212) 241-4812 |
| 3 | FLORIDA ELECTROPHYSIOLOGY ASSOCIATES PA | ATLANTIS | FL | CARDIAC ELECTROPHYSIOLOGY | 14 | 169 | $750,550 | $4,441 | premium | 11.6% | (561) 434-0353 |
| 4 | ST DAVIDS HEART AND VASCULAR PLLC | AUSTIN | TX | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 199 | 152 | $389,578 | $2,563 | premium | 9.5% | (512) 899-2028 |
| 5 | CHRISTUS TRINITY CLINIC | TYLER | TX | NURSE PRACTITIONER | 1495 | 142 | $382,488 | $2,694 | premium | 8.9% | (903) 606-5560 |
| 6 | HEALTHTEXAS PROVIDER NETWORK | DALLAS | TX | PHYSICIAN ASSISTANT | 2482 | 139 | $475,807 | $3,423 | premium | 8.7% | — |
| 7 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 132 | $351,912 | $2,666 | premium | 7.7% | (415) 600-1020 |
| 8 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | LOS ANGELES | CA | INTERNAL MEDICINE | 1424 | 131 | $557,929 | $4,259 | premium | 7.6% | (310) 825-7922 |
| 9 | PIEDMONT CARDIOLOGY OF ATLANTA, LLC | ATLANTA | GA | PHYSICIAN ASSISTANT | 477 | 129 | $384,499 | $2,981 | premium | 21.8% | (404) 605-5000 |
| 10 | PROVIDENCE MEDICAL FOUNDATION | FULLERTON | CA | PHYSICIAN ASSISTANT | 1455 | 123 | $279,825 | $2,275 | premium | 7.1% | (714) 871-3006 |
| 11 | NCHMD INC | NAPLES | FL | NEUROLOGY | 515 | 120 | $226,080 | $1,884 | premium | 8.2% | (239) 436-5100 |
| 12 | POUDRE VALLEY MEDICAL GROUP LLC | COLORADO SPRINGS | CO | PHYSICIAN ASSISTANT | 2390 | 119 | $229,313 | $1,927 | premium | 32.8% | — |
| 13 | LAHEY CLINIC INC | BURLINGTON | MA | NURSE PRACTITIONER | 1400 | 118 | $393,250 | $3,333 | premium | 21.0% | — |
| 14 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 113 | $471,549 | $4,173 | premium | 6.6% | (916) 983-7476 |
| 15 | BAPTIST MEDICAL GROUP LLC | PENSACOLA | FL | PHYSICIAN ASSISTANT | 248 | 111 | $201,465 | $1,815 | premium | 7.6% | — |
| 16 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 105 | $443,940 | $4,228 | premium | 9.4% | — |
| 17 | OHH PHYSICIANS LLC | OKLAHOMA CITY | OK | INTERVENTIONAL CARDIOLOGY | 134 | 102 | $226,032 | $2,216 | premium | 28.3% | (405) 608-3800 |
| 18 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 99 | $283,988 | $2,869 | premium | 14.5% | — |
| 19 | ADVOCATE HEALTH AND HOSPITALS CORPORATION | BUFFALO GROVE | IL | NURSE PRACTITIONER | 3045 | 98 | $316,442 | $3,229 | premium | 14.3% | (847) 459-1160 |
| 20 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 94 | $190,229 | $2,024 | premium | 47.2% | (801) 261-8346 |
| 21 | SAINT THOMAS MEDICAL PARTNERS | NASHVILLE | TN | NURSE PRACTITIONER | 591 | 94 | $148,520 | $1,580 | premium | 25.5% | (615) 269-4545 |
| 22 | INOVA HEALTH CARE SERVICES | FALLS CHURCH | VA | NURSE PRACTITIONER | 1818 | 93 | $229,245 | $2,465 | premium | 16.7% | — |
| 23 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 90 | $550,190 | $6,113 | premium | 5.2% | (650) 723-4000 |
| 24 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 89 | $402,980 | $4,528 | premium | 13.0% | — |
| 25 | JOSEPH A CAPLAN MD PC | SUN CITY WEST | AZ | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 31 | 86 | $171,698 | $1,996 | premium | 14.9% | (623) 876-8816 |
| 26 | STATE UNIVERSITY OF IOWA | IOWA CITY | IA | PHYSICIAN ASSISTANT | 1902 | 85 | $249,288 | $2,933 | premium | 30.0% | (319) 678-8201 |
| 27 | JOHN MUIR PHYSICIAN NETWORK | WALNUT CREEK | CA | FAMILY PRACTICE | 489 | 81 | $275,886 | $3,406 | premium | 4.7% | (925) 296-9720 |
| 28 | VANDERBILT UNIVERSITY MEDICAL CENTER | NASHVILLE | TN | NURSE PRACTITIONER | 3394 | 77 | $219,455 | $2,850 | premium | 20.9% | (615) 322-5000 |
| 29 | INTEGRATED CARDIOLOGY GROUP LLC | LINCOLN | NE | PHYSICIAN ASSISTANT | 78 | 76 | $136,420 | $1,795 | premium | 67.9% | (402) 483-3333 |
| 30 | CHS PHYSICIAN PARTNERS PC | ROSLYN | NY | PHYSICIAN ASSISTANT | 734 | 73 | $1,468,816 | $20,121 | premium | 6.5% | — |
| 31 | BAPTIST HEALTH MEDICAL GROUP INC | LOUISVILLE | KY | NURSE PRACTITIONER | 2448 | 72 | $114,984 | $1,597 | premium | 40.9% | (502) 928-1050 |
| 32 | TEXAS HEALTH PHYSICIANS GROUP | FORT WORTH | TX | PHYSICIAN ASSISTANT | 1350 | 71 | $181,405 | $2,555 | premium | 4.4% | (817) 281-2977 |
| 33 | SENTARA MEDICAL GROUP | NORFOLK | VA | PHYSICIAN ASSISTANT | 1404 | 69 | $107,041 | $1,551 | premium | 12.4% | — |
| 34 | WEILL MEDICAL COLLEGE OF CORNELL | NEW YORK | NY | INTERNAL MEDICINE | 2053 | 68 | $259,420 | $3,815 | premium | 6.1% | (212) 746-5454 |
| 35 | NORTHSIDE CARDIOVASCULAR PROFESSIONAL SERVICES, LLC | ATLANTA | GA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 144 | 67 | $168,572 | $2,516 | premium | 11.3% | (404) 851-8000 |
| 36 | SPECIALTY ASSOCIATES OF WEST HOUSTON PLLC | HOUSTON | TX | PHYSICIAN ASSISTANT | 125 | 65 | $165,697 | $2,549 | premium | 4.1% | (281) 461-6830 |
| 37 | MOUNTAINSTAR CARDIOLOGY ST MARKS LLC | OGDEN | UT | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 41 | 65 | $164,103 | $2,525 | premium | 32.7% | (801) 479-2111 |
| 38 | GENERAL PHYSICIAN PC | BUFFALO | NY | PHYSICIAN ASSISTANT | 462 | 63 | $88,200 | $1,400 | premium | 5.6% | (716) 884-3000 |
| 39 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 62 | $203,980 | $3,290 | premium | 13.9% | (919) 684-8111 |
| 40 | HEART HOSPITAL OF SOUTH DAKOTA LLC | SIOUX FALLS | SD | NURSE PRACTITIONER | 67 | 61 | $45,088 | $739 | premium | 48.0% | (605) 977-7000 |
| 41 | YAVAPAI REGIONAL MEDICAL CENTER PHYSICIAN CARE LLC | PRESCOTT | AZ | NURSE PRACTITIONER | 120 | 61 | $99,791 | $1,636 | premium | 10.6% | (928) 771-3704 |
| 42 | ALLINA HEALTH SYSTEM | MINNEAPOLIS | MN | PHYSICIAN ASSISTANT | 3855 | 59 | $186,204 | $3,156 | premium | 35.8% | (612) 863-4000 |
| 43 | PHOEBE PHYSICIAN GROUP INC | AMERICUS | OK | NURSE PRACTITIONER | 442 | 58 | $83,288 | $1,436 | premium | 16.1% | (229) 928-2882 |
| 44 | PROVIDENCE HEALTH AND SERVICES WASHINGTON | OLYMPIA | WA | FAMILY PRACTICE | 477 | 57 | $145,485 | $2,552 | premium | 13.1% | (360) 493-4083 |
| 45 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 56 | $167,894 | $2,998 | premium | 3.2% | (858) 455-9100 |
| 46 | ADVENTIST HEALTH PHYSICIANS NETWORK | HANFORD | CA | NURSE PRACTITIONER | 651 | 56 | $142,618 | $2,547 | premium | 3.2% | (559) 583-4695 |
| 47 | CLINICAL HEALTH CARE ASSOCIATES OF NEW JERSEY PC | CHERRY HILL | PA | DIAGNOSTIC RADIOLOGY | 825 | 55 | $150,150 | $2,730 | premium | 11.7% | (856) 433-2535 |
| 48 | UNIVERSITY OF PENN - MEDICAL GROUP | PHILADELPHIA | PA | PHYSICIAN ASSISTANT | 3505 | 52 | $141,960 | $2,730 | premium | 11.1% | (215) 662-2777 |
| 49 | CARDIOVASCULAR SPECIALISTS OF NEW ENGLAND, LLC | LONDONDERRY | NH | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 14 | 52 | $342,166 | $6,580 | premium | 42.6% | (603) 323-0883 |
| 50 | MERCY CLINIC HEART AND VASCULAR LLC | SAINT LOUIS | MO | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 112 | 51 | $172,633 | $3,385 | premium | 16.8% | (314) 842-0602 |
| 51 | SAINT LUKES PHYSICIAN GROUP INC | KANSAS CITY | MO | NURSE PRACTITIONER | 1228 | 51 | $110,925 | $2,175 | premium | 16.8% | — |
| 52 | FLORIDA HOSPITAL PHYSICIAN GROUP INC | TAMPA | FL | DIAGNOSTIC RADIOLOGY | 891 | 51 | $132,274 | $2,594 | premium | 3.5% | (813) 615-7075 |
| 53 | FRANCISCAN MEDICAL GROUP | TACOMA | WA | PHYSICIAN ASSISTANT | 1407 | 51 | $121,495 | $2,382 | premium | 11.7% | (253) 428-2200 |
| 54 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 50 | $153,048 | $3,061 | premium | 2.9% | (916) 681-8852 |
| 55 | LUTHERAN MEDICAL GROUP LLC | FORT WAYNE | IN | NURSE PRACTITIONER | 241 | 47 | $101,473 | $2,159 | premium | 12.3% | (260) 434-6339 |
| 56 | VHS OUTPATIENT CLINICS INC | PHOENIX | AZ | PHYSICIAN ASSISTANT | 180 | 47 | $111,813 | $2,379 | premium | 8.2% | (602) 274-6506 |
| 57 | WHITE PLAINS PHYSICIAN SERVICES PC | WHITE PLAINS | NY | PHYSICIAN ASSISTANT | 383 | 46 | $174,397 | $3,791 | premium | 4.1% | (914) 681-0600 |
| 58 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 45 | $83,887 | $1,864 | premium | 11.4% | — |
| 59 | CARDIOLOGY ASSOCIATES OF MOBILE INC | MOBILE | AL | PHYSICIAN ASSISTANT | 52 | 44 | $92,400 | $2,100 | premium | 24.0% | (251) 460-0078 |
| 60 | HEALTH FIRST MEDICAL GROUP, LLC | MELBOURNE | FL | NURSE PRACTITIONER | 669 | 43 | $75,250 | $1,750 | premium | 2.9% | (321) 434-8878 |
| 61 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 43 | $522,536 | $12,152 | premium | 7.5% | (800) 603-0558 |
| 62 | OHIOHEALTH CORPORATION | COLUMBUS | OH | PHYSICIAN ASSISTANT | 2282 | 43 | $52,632 | $1,224 | premium | 11.1% | — |
| 63 | REGENTS OF THE UNIVERSITY OF CALIFORNIA | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 2057 | 43 | $132,351 | $3,078 | premium | 2.5% | (800) 926-8273 |
| 64 | LEHIGH VALLEY PHYSICIAN GROUP | ALLENTOWN | PA | PHYSICIAN ASSISTANT | 2389 | 43 | $83,750 | $1,948 | premium | 9.2% | — |
| 65 | RMH MEDICAL GROUP LLC | ROCKINGHAM | VA | PHYSICIAN ASSISTANT | 263 | 42 | $65,167 | $1,552 | premium | 7.5% | (540) 689-1110 |
| 66 | DRS BAKER AND GILMOUR MD PA | JACKSONVILLE | FL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 5 | 42 | $59,578 | $1,419 | premium | 2.9% | (904) 733-4444 |
| 67 | PIEDMONT ATHENS SPECIALTY CARE LLC | ATHENS | GA | PHYSICIAN ASSISTANT | 115 | 41 | $112,412 | $2,742 | premium | 6.9% | (706) 475-7000 |
| 68 | HOLY CROSS HOSPITAL INC | FT LAUDERDALE | FL | PHYSICIAN ASSISTANT | 303 | 41 | $131,947 | $3,218 | premium | 2.8% | (954) 772-2136 |
| 69 | COVENANT MEDICAL GROUP | LUBBOCK | TX | NURSE PRACTITIONER | 227 | 40 | $121,760 | $3,044 | premium | 2.5% | (806) 725-5844 |
| 70 | HONORHEALTH AMBULATORY | SCOTTSDALE | AZ | PHYSICIAN ASSISTANT | 601 | 40 | $93,903 | $2,348 | premium | 6.9% | — |
| 71 | RUSH UNIVERSITY MEDICAL GROUP | CHICAGO | IL | PHYSICIAN ASSISTANT | 1496 | 40 | $103,072 | $2,577 | premium | 5.9% | (312) 563-2875 |
| 72 | BON SECOURS MEDICAL GROUP GREENVILLE SPECIALTY CARE LLC | GREENVILLE | SC | NURSE PRACTITIONER | 288 | 40 | $70,520 | $1,763 | premium | 10.1% | (864) 255-1901 |
| 73 | THE HEART GROUP OF LANCASTER GENERAL HEALTH | LANCASTER | PA | NURSE PRACTITIONER | 61 | 40 | $67,320 | $1,683 | premium | 8.5% | (717) 544-8300 |
| 74 | HENDRICK PROVIDER NETWORK | ABILENE | TX | PHYSICIAN ASSISTANT | 249 | 39 | $91,182 | $2,338 | premium | 2.4% | (325) 672-4372 |
| 75 | HATTIESBURG CLINIC PA | HATTIESBURG | MS | FAMILY PRACTICE | 530 | 39 | $151,464 | $3,884 | premium | 27.9% | (601) 264-6000 |
| 76 | HEARTPLACE PLLC | PLANO | TX | INTERVENTIONAL CARDIOLOGY | 93 | 39 | $79,170 | $2,030 | premium | 2.4% | (972) 985-8838 |
| 77 | STONY BROOK INTERNISTS UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | HOSPITALIST | 414 | 38 | $119,510 | $3,145 | premium | 3.4% | (631) 444-1560 |
| 78 | THE EMORY CLINIC INC | ATLANTA | GA | NURSE PRACTITIONER | 3484 | 38 | $147,096 | $3,871 | premium | 6.4% | (404) 778-7525 |
| 79 | MONUMENT HEALTH RAPID CITY HOSPITAL INC | RAPID CITY | NY | PHYSICIAN ASSISTANT | 559 | 37 | $90,650 | $2,450 | premium | 3.3% | (605) 755-7200 |
| 80 | MCV ASSOCIATED PHYSICIANS | RICHMOND | VA | NURSE PRACTITIONER | 1791 | 37 | $129,648 | $3,504 | premium | 6.6% | (804) 828-9000 |
| 81 | UNIVERSITY PHYSICIANS INCORPORATED | AURORA | CO | PHYSICIAN ASSISTANT | 3122 | 37 | $438,450 | $11,850 | premium | 10.2% | (720) 777-1234 |
| 82 | ANMED HEALTH | ANDERSON | SC | FAMILY PRACTICE | 343 | 37 | $81,104 | $2,192 | premium | 9.4% | — |
| 83 | ENLOE MEDICAL CENTER | CHICO | PA | DIAGNOSTIC RADIOLOGY | 362 | 36 | $62,820 | $1,745 | premium | 7.7% | (530) 332-4470 |
| 84 | MISSION HEALTH COMMUNITY MULTISPECIALTY PROVIDERS LLC | ASHEVILLE | NC | PHYSICIAN ASSISTANT | 593 | 36 | $89,100 | $2,475 | premium | 8.1% | (828) 213-1740 |
| 85 | SINNATHAMBY CARDIOLOGY SERVICES, INC. | DAYTON | OH | CARDIAC ELECTROPHYSIOLOGY | 7 | 36 | $110,592 | $3,072 | premium | 9.3% | (937) 424-3589 |
| 86 | ST. JOSEPH'S CARDIOLOGY GROUP LLC | SAVANNAH | GA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 17 | 36 | $91,513 | $2,542 | premium | 6.1% | (912) 927-3434 |
| 87 | MEDICAL FOUNDATION OF CENTRAL MISSISSIPPI INC | JACKSON | GA | NURSE PRACTITIONER | 266 | 36 | $55,512 | $1,542 | premium | 6.1% | (601) 292-4261 |
| 88 | SINAI HOSPITAL OF BALTIMORE, INC | BALTIMORE | MD | PHYSICIAN ASSISTANT | 386 | 36 | $108,288 | $3,008 | premium | 8.3% | — |
| 89 | REGENTS UNIV OF CALIFORNIA UCSF | SAN FRANCISCO | CA | PHYSICIAN ASSISTANT | 277 | 35 | $144,550 | $4,130 | premium | 2.0% | (415) 476-1000 |
| 90 | UNIVERSITY HEALTH SYSTEM, INC. | KNOXVILLE | TN | NURSE PRACTITIONER | 561 | 35 | $66,850 | $1,910 | premium | 9.5% | (865) 305-6333 |
| 91 | HEART RHYTHM ASSOCIATES, P.A. | SHENANDOAH | TX | CARDIAC ELECTROPHYSIOLOGY | 7 | 35 | $85,995 | $2,457 | premium | 2.2% | (281) 825-1866 |
| 92 | LESTER E COX MEDICAL CENTERS | SPRINGFIELD | MO | NURSE PRACTITIONER | 333 | 35 | $112,201 | $3,206 | premium | 11.5% | (417) 269-6000 |
| 93 | TRI-CITY CARDIOLOGY CONSULTANTS PC | MESA | AZ | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 41 | 34 | $57,766 | $1,699 | premium | 5.9% | (480) 835-6100 |
| 94 | COASTAL CAROLINA MULTISPECIALTY ASSOCIATES LLC | CHARLESTON | SC | NURSE PRACTITIONER | 49 | 33 | $76,473 | $2,317 | premium | 8.4% | — |
| 95 | ST VINCENT INFIRMARY MEDICAL CENTER | LITTLE ROCK | AR | NURSE PRACTITIONER | 47 | 33 | $42,405 | $1,285 | premium | 16.7% | (501) 255-6000 |
| 96 | HEART SPECIALISTS OF SARASOTA PL | SARASOTA | FL | PHYSICIAN ASSISTANT | 24 | 33 | $64,482 | $1,954 | premium | 2.3% | (941) 917-1000 |
| 97 | PROVIDENCE HEALTH AND SERVICES WASHINGTON | SPOKANE | WA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 56 | 32 | $83,533 | $2,610 | premium | 7.3% | (509) 455-8820 |
| 98 | MCLEOD REGIONAL MEDICAL CENTER OF THE PEE DEE INC | FLORENCE | SC | NURSE PRACTITIONER | 409 | 32 | $114,378 | $3,574 | premium | 8.1% | (843) 777-2000 |
| 99 | TIDALHEALTH SPECIALTY CARE LLC | SALISBURY | MD | NURSE PRACTITIONER | 329 | 32 | $51,881 | $1,621 | premium | 7.4% | — |
| 100 | ST BERNARDS PHYSICIAN CLINICS INC | JONESBORO | AR | NURSE PRACTITIONER | 206 | 32 | $43,819 | $1,369 | premium | 16.2% | (870) 972-8181 |
Showing the top 100 of 355 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 →