8,038,632 observed fee-for-service (49%) · ~8,233,249 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 | J1306 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 | LIVWELL HEALTH LLC | SCOTTSDALE | AZ | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 7 | 507,488 | $10,651,822 | $21 | premium | 74.0% | (602) 688-2248 |
| 2 | INFUSION4HEALTH | THOUSAND OAKS | CA | NURSE PRACTITIONER | 26 | 373,746 | $9,958,825 | $27 | premium | 20.8% | (805) 719-3700 |
| 3 | PALMETTO INFUSION SERVICES LLC | CHARLOTTE | SC | NURSE PRACTITIONER | 59 | 332,280 | $23,730,918 | $71 | premium | 70.9% | (704) 200-9482 |
| 4 | PIEDMONT CARDIOLOGY OF ATLANTA, LLC | ATLANTA | GA | PHYSICIAN ASSISTANT | 477 | 285,988 | $3,999,856 | $14 | premium | 47.7% | (404) 605-5000 |
| 5 | IVX HEALTH OF FLORIDA PA | JACKSONVILLE | FL | NURSE PRACTITIONER | 40 | 277,752 | $10,015,737 | $36 | premium | 19.7% | (904) 339-7332 |
| 6 | METRO INFECTIOUS DISEASE CONSULTANTS LLC | BURR RIDGE | IL | INFECTIOUS DISEASE | 396 | 229,475 | $4,940,869 | $22 | premium | 90.1% | (888) 220-6432 |
| 7 | INFUSION EXPRESS OF TENNESSEE PC | BRENTWOOD | TN | NURSE PRACTITIONER | 42 | 225,496 | $8,131,386 | $36 | premium | 43.7% | (615) 510-6002 |
| 8 | PURE HEALTHCARE OF COLORADO LLC | DENVER | CO | ANESTHESIOLOGY | 2 | 151,656 | $4,104,297 | $27 | premium | 54.1% | (970) 822-7700 |
| 9 | TWELVESTONE INFUSION CENTERS LLC | CANTON | TN | NURSE PRACTITIONER | 58 | 137,740 | $4,062,756 | $29 | premium | 26.7% | (844) 893-0012 |
| 10 | THAILA RAMANUJAM M D INC | SANTA CRUZ | CA | RHEUMATOLOGY | 4 | 126,664 | $2,755,323 | $22 | premium | 7.1% | (831) 462-8960 |
| 11 | FLEXCARE INFUSION OKC, LLC | OKLAHOMA CITY | OK | NURSE PRACTITIONER | 6 | 123,540 | $3,004,658 | $24 | premium | 59.3% | (405) 509-6599 |
| 12 | TRABECULAR MEDICAL GROUP, LLC | VOORHEES | NJ | RHEUMATOLOGY | 19 | 116,724 | $1,750,860 | $15 | premium | 35.7% | (856) 424-5005 |
| 13 | SPECIALTY INFUSION LLC | BATON ROUGE | LA | NURSE PRACTITIONER | 29 | 106,784 | $3,060,105 | $29 | premium | 42.6% | (888) 339-0906 |
| 14 | MISSION MEDICAL CARE PC | ROCKVILLE CENTRE | NY | NURSE PRACTITIONER | 51 | 103,281 | $3,792,675 | $37 | premium | 20.9% | (212) 803-3339 |
| 15 | INFUSION EXPRESS OF PENNSYLVANIA PLLC | BENSALEM | PA | NURSE PRACTITIONER | 14 | 100,536 | $3,625,328 | $36 | premium | 21.2% | (484) 318-2268 |
| 16 | MALCOLM S POND MD INC AND CHIAYU CHEN MD PTR CARDIOLOGY ASSOCIATES | RIVERSIDE | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 2 | 95,708 | $2,679,824 | $28 | premium | 5.3% | (951) 686-3600 |
| 17 | ATTIGO INFUSION INC | DENTON | TX | NURSE PRACTITIONER | 21 | 95,708 | $3,784,907 | $40 | premium | 7.0% | (972) 661-2273 |
| 18 | CEDARS-SINAI MEDICAL CARE FOUNDATION | LOS ANGELES | CA | PHYSICIAN ASSISTANT | 1699 | 95,708 | $3,254,072 | $34 | premium | 5.3% | (310) 423-0674 |
| 19 | INFUSEABLE HEALTHCARE, LLC | SCOTTSDALE | WI | GASTROENTEROLOGY | 2 | 86,904 | $2,114,224 | $24 | premium | 74.1% | (480) 927-3800 |
| 20 | SAGE INFUSION, LLC | TAMPA | FL | NURSE PRACTITIONER | 43 | 81,000 | $1,056,456 | $13 | premium | 5.7% | (813) 775-9997 |
| 21 | PALMETTO INFUSION SERVICES LLC | CHARLOTTE | GA | NURSE PRACTITIONER | 59 | 79,804 | $5,680,243 | $71 | premium | 13.3% | (704) 200-9482 |
| 22 | HEART SPECIALISTS OF SARASOTA PL | SARASOTA | FL | PHYSICIAN ASSISTANT | 24 | 78,100 | $1,319,890 | $17 | premium | 5.5% | (941) 917-1000 |
| 23 | GEORGIA HEART INSTITUTE LLC | GAINESVILLE | GA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 128 | 75,828 | $1,440,732 | $19 | premium | 12.7% | (770) 534-2020 |
| 24 | HEALTHTEXAS PROVIDER NETWORK | DALLAS | TX | PHYSICIAN ASSISTANT | 2482 | 75,544 | $2,649,514 | $35 | premium | 5.5% | — |
| 25 | PALMETTO INFUSION SERVICES LLC | CHARLOTTE | NC | NURSE PRACTITIONER | 59 | 69,580 | $4,937,498 | $71 | premium | 23.9% | (704) 200-9482 |
| 26 | SCOTT PARRY MD PC | HENDERSON | NV | NURSE PRACTITIONER | 5 | 69,296 | $1,696,554 | $24 | premium | 33.8% | (888) 777-1945 |
| 27 | MEDICINE AND RHEUMATOLOGY ASSOCIATES | LEWES | DE | INTERNAL MEDICINE | 3 | 64,468 | $2,095,920 | $33 | premium | 43.2% | (302) 645-6644 |
| 28 | INTERNAL MEDICINE ASSOCIATES OF OXFORD | OXFORD | MS | NURSE PRACTITIONER | 8 | 61,912 | $928,680 | $15 | premium | 22.4% | (662) 234-0332 |
| 29 | IVX HEALTH OF TEXAS PA | SAN ANTONIO | TX | NURSE PRACTITIONER | 19 | 61,348 | $2,450,090 | $40 | premium | 4.5% | (726) 230-8110 |
| 30 | AMARILLO UROLOGY ASSOCIATES LLP | AMARILLO | TX | UROLOGY | 15 | 57,396 | $1,141,680 | $20 | premium | 4.2% | (806) 355-9447 |
| 31 | CAPITAL HEALTH MEDICAL GROUP | PENNINGTON | NJ | NURSE PRACTITIONER | 439 | 55,096 | $2,361,655 | $43 | premium | 16.9% | (609) 537-6000 |
| 32 | TIDALHEALTH SPECIALTY CARE LLC | SALISBURY | MD | NURSE PRACTITIONER | 329 | 53,960 | $1,309,501 | $24 | premium | 13.2% | — |
| 33 | JOHN MUIR PHYSICIAN NETWORK | WALNUT CREEK | CA | FAMILY PRACTICE | 489 | 51,404 | $938,123 | $18 | premium | 2.9% | (925) 296-9720 |
| 34 | ACCURX INFUSION CENTER LLC | MONTGOMERY | AL | NURSE PRACTITIONER | 7 | 47,428 | $3,385,599 | $71 | premium | 22.3% | (888) 410-0317 |
| 35 | BROOKWELL HEALTH LLC | KINGSPORT | TN | NURSE PRACTITIONER | 15 | 47,144 | $1,654,994 | $35 | premium | 9.1% | (866) 589-0003 |
| 36 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 47,144 | $1,320,032 | $28 | premium | 9.6% | (212) 263-9700 |
| 37 | PALMETTO INFUSION SERVICES LLC | CHARLOTTE | FL | NURSE PRACTITIONER | 59 | 46,860 | $3,348,065 | $71 | premium | 3.3% | (704) 200-9482 |
| 38 | GREATER AUSTIN ALLERGY, ASTHMA AND IMMUNOLOGY PA | AUSTIN | TX | ALLERGY/IMMUNOLOGY | 10 | 45,724 | $1,569,705 | $34 | premium | 3.3% | (512) 732-2774 |
| 39 | HATTIESBURG CLINIC PA | HATTIESBURG | MS | FAMILY PRACTICE | 530 | 45,440 | $1,499,520 | $33 | premium | 16.4% | (601) 264-6000 |
| 40 | SRIDHAR CHATRATHI MD PC | GREENBELT | MD | PHYSICIAN ASSISTANT | 4 | 44,304 | $664,032 | $15 | premium | 10.9% | (301) 220-2220 |
| 41 | OMAR OSMAN PRACTICE, LLC | SAN DIEGO | NC | NURSE PRACTITIONER | 38 | 43,168 | $1,047,601 | $24 | premium | 14.8% | (858) 259-2222 |
| 42 | INNOVATIVE INFUSIONS LLC | AUSTIN | TN | NURSE PRACTITIONER | 106 | 42,032 | $1,789,314 | $43 | premium | 8.1% | (512) 261-4800 |
| 43 | EDMUND J. MACLAUGHLIN, MD, LLC | EASTON | MD | RHEUMATOLOGY | 6 | 42,032 | $672,512 | $16 | premium | 10.3% | (410) 819-6545 |
| 44 | INNOVATIVE INFUSIONS LLC | AUSTIN | FL | NURSE PRACTITIONER | 106 | 41,748 | $1,782,043 | $43 | premium | 3.0% | (512) 261-4800 |
| 45 | THE HEART GROUP OF LANCASTER GENERAL HEALTH | LANCASTER | PA | NURSE PRACTITIONER | 61 | 41,464 | $1,020,128 | $25 | premium | 8.8% | (717) 544-8300 |
| 46 | INFUSION CENTER OF PENNSYLVANIA LLC | ROYERSFORD | PA | NURSE PRACTITIONER | 8 | 40,896 | $1,175,572 | $29 | premium | 8.6% | (610) 495-6800 |
| 47 | KELSEY-SEYBOLD MEDICAL GROUP, PLLC | HOUSTON | TX | FAMILY PRACTICE | 923 | 40,612 | $1,745,773 | $43 | premium | 3.0% | (713) 442-0000 |
| 48 | UT PHYSICIANS | HOUSTON | TX | NURSE PRACTITIONER | 1758 | 39,760 | $1,364,961 | $34 | premium | 2.9% | (713) 566-5000 |
| 49 | MULTIGROUP PHYSICIAN PRACTICE OF TEXAS | DALLAS | TX | NURSE PRACTITIONER | 13 | 39,760 | $1,141,002 | $29 | premium | 2.9% | (972) 598-0000 |
| 50 | METRO INFECTIOUS DISEASE CONSULTANTS LLC | BURR RIDGE | MI | INFECTIOUS DISEASE | 396 | 39,192 | $842,293 | $21 | premium | 49.1% | (888) 220-6432 |
| 51 | ID CONSULTANTS, INC | BEACHWOOD | OH | PHYSICIAN ASSISTANT | 6 | 38,340 | $1,099,816 | $29 | premium | 21.0% | (216) 360-0456 |
| 52 | CLINICAL CARE ASSOCIATES OF THE UNIVERSITY OF PENNSYLVANIA HEALTH. | WEST CHESTER | PA | NURSE PRACTITIONER | 616 | 38,056 | $1,094,052 | $29 | premium | 8.0% | (610) 431-5000 |
| 53 | APEX CARDIOLOGY OF SILICON VALLEY A MEDICAL PARTNERSHIP | SAN JOSE | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 3 | 37,772 | $491,036 | $13 | premium | 2.1% | (408) 369-7500 |
| 54 | HEALTHONE HEART CARE LLC | AURORA | CO | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 46 | 36,874 | $1,126,720 | $31 | premium | 13.2% | (303) 750-0822 |
| 55 | TWELVESTONE INFUSION CENTERS LLC | CANTON | VA | NURSE PRACTITIONER | 58 | 36,352 | $1,085,638 | $30 | premium | 12.1% | (844) 893-0012 |
| 56 | LAWRENCE PHYSICIANS LLC | LAWRENCE | KS | PHYSICIAN ASSISTANT | 219 | 36,352 | $1,276,879 | $35 | premium | 31.8% | — |
| 57 | STRAND PHYSICIAN SPECIALISTS PA | MYRTLE BEACH | SC | PHYSICIAN ASSISTANT | 55 | 36,352 | $1,001,313 | $28 | premium | 7.8% | (843) 497-5929 |
| 58 | METRO INFECTIOUS DISEASE CONSULTANTS LLC | BURR RIDGE | TX | INFECTIOUS DISEASE | 396 | 36,068 | $775,571 | $22 | premium | 2.6% | (888) 220-6432 |
| 59 | METRO INFECTIOUS DISEASE CONSULTANTS LLC | BURR RIDGE | FL | INFECTIOUS DISEASE | 396 | 36,068 | $776,386 | $22 | premium | 2.6% | (888) 220-6432 |
| 60 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 35,784 | $1,324,008 | $37 | premium | 7.2% | — |
| 61 | LANGFORD ALLERGY LLC | MACON | GA | NURSE PRACTITIONER | 6 | 33,512 | $1,150,467 | $34 | premium | 5.6% | (478) 607-2514 |
| 62 | COMMUNITY MEDICAL ASSOCIATES INC | LOUISVILLE | KY | NURSE PRACTITIONER | 1377 | 33,228 | $1,452,092 | $44 | premium | 33.1% | (502) 937-2209 |
| 63 | INFUCARE MEDICAL GROUP OF CALIFORNIA INC | PALM DESERT | CA | INFECTIOUS DISEASE | 3 | 33,228 | $887,981 | $27 | premium | 1.9% | (844) 243-7833 |
| 64 | FLORIDA PAIN RELIEF GROUP PLLC | TAMPA | FL | NURSE PRACTITIONER | 82 | 31,808 | $904,861 | $28 | premium | 2.3% | (813) 739-7493 |
| 65 | DIPTI ITCHHAPORIA MEDICAL CORPORATION | NEWPORT BEACH | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 4 | 31,240 | $468,600 | $15 | premium | 1.7% | (949) 548-6634 |
| 66 | OSO SPECIALTY INFUSION INC | IRVINE | CA | ALLERGY/IMMUNOLOGY | 10 | 30,388 | $1,088,951 | $36 | premium | 1.7% | (949) 660-7126 |
| 67 | PRIMARY HEALTH GROUP INC | RICHMOND | VA | FAMILY PRACTICE | 17 | 30,105 | $927,288 | $31 | premium | 10.1% | (804) 560-0490 |
| 68 | FLORIDA CANCER SPECIALISTS AND RESEARCH INSTITUTE, LLC | FORT MYERS | FL | HEMATOLOGY/ONCOLOGY | 437 | 30,104 | $1,475,096 | $49 | premium | 2.1% | (239) 561-9622 |
| 69 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 29,820 | $1,863,688 | $62 | premium | 16.4% | — |
| 70 | ARIZONA ARTHRITIS AND RHEUMATOLOGY ASSOCIATES P C | PHOENIX | AZ | RHEUMATOLOGY | 41 | 28,685 | $662,324 | $23 | premium | 4.2% | (480) 443-8400 |
| 71 | TWELVESTONE INFUSION CENTERS LLC | CANTON | KY | NURSE PRACTITIONER | 58 | 28,684 | $839,544 | $29 | premium | 28.5% | (844) 893-0012 |
| 72 | HORIZON INFUSIONS, LLC | CRESTVIEW HILLS | OH | NURSE PRACTITIONER | 7 | 28,400 | $689,355 | $24 | premium | 15.6% | (513) 619-9223 |
| 73 | INFUSION EXPRESS OF PENNSYLVANIA PLLC | BENSALEM | MA | NURSE PRACTITIONER | 14 | 28,116 | $1,013,863 | $36 | premium | 37.2% | (484) 318-2268 |
| 74 | INFECTIOUS DISEASE ASSOCIATES OF CENTRAL VIRGINIA LLC | LYNCHBURG | VA | INFECTIOUS DISEASE | 6 | 27,548 | $392,780 | $14 | premium | 9.2% | (434) 947-3900 |
| 75 | OPTION CARE INFUSION SUITES LLC | MURRAY | ID | NURSE PRACTITIONER | 8 | 26,980 | $798,177 | $30 | premium | 27.8% | (801) 577-7055 |
| 76 | METRO INFECTIOUS DISEASE CONSULTANTS LLC | BURR RIDGE | IA | INFECTIOUS DISEASE | 396 | 26,980 | $583,974 | $22 | premium | 37.4% | (888) 220-6432 |
| 77 | CAPITAL CARDIOLOGY ASSOCIATES PLLC | ALBANY | NY | NURSE PRACTITIONER | 68 | 26,980 | $336,540 | $12 | premium | 5.5% | (518) 292-6000 |
| 78 | PRIVIA MEDICAL GROUP ARIZONA, LLC | GOODYEAR | AZ | NURSE PRACTITIONER | 88 | 26,980 | $657,503 | $24 | premium | 3.9% | (623) 512-4390 |
| 79 | CARDIOVASCULAR CARE INC | LOS ALAMITOS | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 6 | 26,056 | $325,700 | $12 | premium | 1.5% | (562) 594-1772 |
| 80 | BARNABAS HEALTH MEDICAL GROUP PC | LIVINGSTON | NJ | NURSE PRACTITIONER | 990 | 25,844 | $1,865,953 | $72 | premium | 7.9% | — |
| 81 | ALERACARE MEDICAL GROUP OF CALIFORNIA | GLENDALE | NY | NURSE PRACTITIONER | 9 | 24,992 | $719,244 | $29 | premium | 5.1% | (888) 209-8874 |
| 82 | MISSION HEALTH COMMUNITY MULTISPECIALTY PROVIDERS LLC | ASHEVILLE | NC | PHYSICIAN ASSISTANT | 593 | 24,708 | $691,824 | $28 | premium | 8.5% | (828) 213-1740 |
| 83 | RHEUMATOLOGY CONSULTANTS OF DE PA | LEWES | DE | PHYSICIAN ASSISTANT | 3 | 24,708 | $787,379 | $32 | premium | 16.6% | (302) 644-2633 |
| 84 | INTRAMED PLUS INFUSION AND MEDICAL CENTER, LLC | NORTH CHARLESTON | SC | NURSE PRACTITIONER | 4 | 24,708 | $600,802 | $24 | premium | 5.3% | (843) 763-2080 |
| 85 | ATLANTICARE REGIONAL MEDICAL CENTER | ATLANTIC CITY | NJ | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 228 | 24,140 | $671,333 | $28 | premium | 7.4% | (609) 345-4000 |
| 86 | TWELVESTONE INFUSION CENTERS LLC | CANTON | AR | NURSE PRACTITIONER | 58 | 23,856 | $712,340 | $30 | premium | 36.9% | (844) 893-0012 |
| 87 | WELLSTAR MEDICAL GROUP LLC | MARIETTA | GA | NURSE PRACTITIONER | 3060 | 23,572 | $592,810 | $25 | premium | 3.9% | (770) 422-2004 |
| 88 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 23,572 | $329,156 | $14 | premium | 5.0% | — |
| 89 | ASSOCIATED GASTROENTEROLOGY MEDICAL GROUP | ANAHEIM | CA | GASTROENTEROLOGY | 6 | 23,288 | $457,322 | $20 | premium | 1.3% | (714) 778-1300 |
| 90 | METRO INFECTIOUS DISEASE CONSULTANTS LLC | BURR RIDGE | MO | INFECTIOUS DISEASE | 396 | 23,004 | $494,957 | $22 | premium | 21.3% | (888) 220-6432 |
| 91 | NEW YORK UNIVERSITY | NEW YORK | FL | DIAGNOSTIC RADIOLOGY | 5704 | 23,004 | $644,112 | $28 | premium | 1.6% | (212) 263-9700 |
| 92 | EAST MOUNTAIN HEALTH PHYSICIANS INC | MARTINSBURG | VA | NURSE PRACTITIONER | 94 | 22,721 | $340,815 | $15 | premium | 7.6% | (304) 350-3200 |
| 93 | INFUSION EXPRESS OF CALIFORNIA INC | SUNNYVALE | CA | NURSE PRACTITIONER | 23 | 22,720 | $819,283 | $36 | premium | 1.3% | (408) 228-3700 |
| 94 | METRO INFECTIOUS DISEASE CONSULTANTS LLC | BURR RIDGE | MD | INFECTIOUS DISEASE | 396 | 22,437 | $488,645 | $22 | premium | 5.5% | (888) 220-6432 |
| 95 | MEDSTAR URGENT CARE LLC | WALDORF | MD | PHYSICIAN ASSISTANT | 294 | 21,584 | $463,824 | $21 | premium | 5.3% | (301) 932-5960 |
| 96 | INFUSION SOLUTIONS OF DELAWARE | DOVER | DE | INTERNAL MEDICINE | 6 | 21,584 | $302,176 | $14 | premium | 14.5% | (302) 674-4627 |
| 97 | ALABAMA INFUSION SERVICES LLC | VESTAVIA | FL | NURSE PRACTITIONER | 5 | 21,016 | $511,174 | $24 | premium | 1.5% | (205) 379-0174 |
| 98 | HIGH DESERT HEART AND VASCULAR | MERIDIAN | ID | NURSE PRACTITIONER | 10 | 21,016 | $777,592 | $37 | premium | 21.6% | (208) 781-6039 |
| 99 | HEALTH FIRST MEDICAL GROUP, LLC | MELBOURNE | FL | NURSE PRACTITIONER | 669 | 20,732 | $512,052 | $25 | premium | 1.5% | (321) 434-8878 |
| 100 | ALERACARE MEDICAL GROUP OF CALIFORNIA | GLENDALE | CA | NURSE PRACTITIONER | 9 | 20,164 | $579,081 | $29 | premium | 1.1% | (888) 209-8874 |
Showing the top 100 of 202 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 →