8,903 observed fee-for-service (49%) · ~9,372 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 | 93307 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 | POUDRE VALLEY MEDICAL GROUP LLC | COLORADO SPRINGS | NE | PHYSICIAN ASSISTANT | 2390 | 702 | $99,684 | $142 | premium | 100.0% | — |
| 2 | POUDRE VALLEY MEDICAL GROUP LLC | COLORADO SPRINGS | CO | PHYSICIAN ASSISTANT | 2390 | 593 | $84,384 | $142 | premium | 54.8% | — |
| 3 | PHOEBE PHYSICIAN GROUP INC | AMERICUS | GA | NURSE PRACTITIONER | 442 | 454 | $82,174 | $181 | premium | 32.9% | (229) 928-2882 |
| 4 | CITY OF HOPE MEDICAL FOUNDATION | DUARTE | CA | NURSE PRACTITIONER | 942 | 453 | $47,565 | $105 | premium | 20.2% | (626) 256-4673 |
| 5 | PHOEBE PHYSICIAN GROUP INC | AMERICUS | VA | NURSE PRACTITIONER | 442 | 432 | $78,192 | $181 | premium | 86.6% | (229) 928-2882 |
| 6 | MOUNT SINAI MEDICAL CENTER CARDIOLOGY LLC | MIAMI BEACH | FL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 41 | 365 | $70,105 | $192 | premium | 19.2% | (305) 674-2690 |
| 7 | MERCY HEALTH PHYSICIANS LIMA SPECIALTY CARE LLC | LIMA | OH | NURSE PRACTITIONER | 251 | 325 | $23,725 | $73 | premium | 73.9% | (419) 227-3361 |
| 8 | REGIONAL EMPLOYEE ASSISTANCE PROGRAM INC | VICTORIA | TX | NURSE PRACTITIONER | 109 | 320 | $54,123 | $169 | premium | 27.4% | (361) 575-7441 |
| 9 | MISSION HEALTH COMMUNITY MULTISPECIALTY PROVIDERS LLC | ASHEVILLE | NC | PHYSICIAN ASSISTANT | 593 | 262 | $67,826 | $259 | premium | 27.9% | (828) 213-1740 |
| 10 | RAPIDES REGIONAL PHYSICIAN GROUP, SPECIALTY CARE, LLC | ALEXANDRIA | LA | NURSE PRACTITIONER | 43 | 242 | $108,713 | $449 | premium | 85.5% | (318) 443-4576 |
| 11 | CARDIOLOGY SPECIALISTS OF NORTH TEXAS PLLC | DALLAS | TX | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 67 | 232 | $53,179 | $229 | premium | 19.9% | — |
| 12 | PUBLIC HEALTH TRUST OF MIAMI DADE COUNTY FLORIDA | MIAMI | FL | NURSE PRACTITIONER | 450 | 217 | $18,930 | $87 | premium | 11.4% | (305) 585-1111 |
| 13 | MIDWEST HEART AND VASCULAR SPECIALISTS LLC | OVERLAND PARK | MO | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 81 | 184 | $27,186 | $148 | premium | 60.7% | (816) 523-7088 |
| 14 | HEALTHONE HEART CARE LLC | AURORA | CO | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 46 | 169 | $24,950 | $148 | premium | 15.6% | (303) 750-0822 |
| 15 | FIRST COAST CARDIOVASCULAR INSTITUTE, LLC | JACKSONVILLE | FL | NURSE PRACTITIONER | 43 | 146 | $12,891 | $88 | premium | 7.7% | (904) 493-3333 |
| 16 | ENTERPRISE CLINIC LLC | ENTERPRISE | AL | INTERNAL MEDICINE | 3 | 146 | $18,688 | $128 | premium | 59.3% | — |
| 17 | FLORIDA HOSPITAL MEDICAL GROUP INC | MAITLAND | FL | PHYSICIAN ASSISTANT | 1634 | 141 | $18,471 | $131 | premium | 7.4% | (407) 200-2700 |
| 18 | ADVENTIST HEALTH SYSTEM GEORGIA INC | CALHOUN | GA | NURSE PRACTITIONER | 229 | 137 | $17,947 | $131 | premium | 9.9% | — |
| 19 | KNOXVILLE HMA CARDIOLOGY PPM, LLC | KNOXVILLE | TN | NURSE PRACTITIONER | 42 | 135 | $18,630 | $138 | premium | 57.4% | (865) 470-2273 |
| 20 | COASTAL CAROLINA MULTISPECIALTY ASSOCIATES LLC | CHARLESTON | SC | NURSE PRACTITIONER | 49 | 120 | $31,539 | $263 | premium | 42.4% | — |
| 21 | MEDICAL ASSOCIATES CLINIC P C | DUBUQUE | IA | PHYSICIAN ASSISTANT | 223 | 116 | $11,832 | $102 | premium | 36.6% | (563) 584-4100 |
| 22 | LAS CRUCES PHYSICIAN SERVICES LLC | LAS CRUCES | NM | NURSE PRACTITIONER | 100 | 115 | $15,295 | $133 | premium | 100.0% | — |
| 23 | HOOD MEDICAL GROUP | GRANBURY | CO | FAMILY PRACTICE | 54 | 106 | $63,706 | $601 | premium | 9.8% | (817) 578-8904 |
| 24 | CCSG, INC | THOMASVILLE | GA | INTERVENTIONAL CARDIOLOGY | 26 | 96 | $15,253 | $159 | premium | 6.9% | (229) 551-0083 |
| 25 | HUGULEY MEDICAL ASSOCIATES, INC | BURLESON | TX | FAMILY PRACTICE | 45 | 87 | $11,397 | $131 | premium | 7.5% | (817) 806-1143 |
| 26 | ADVENTIST HEALTH SYSTEM-SUNBELT INC | SEBRING | FL | INTERNAL MEDICINE | 107 | 85 | $11,135 | $131 | premium | 4.5% | (863) 314-4466 |
| 27 | ST ELIZABETH MEDICAL CENTER, INC | EDGEWOOD | KY | NURSE PRACTITIONER | 185 | 85 | $26,605 | $313 | premium | 15.3% | (859) 301-2237 |
| 28 | HOOD MEDICAL GROUP | GRANBURY | TX | FAMILY PRACTICE | 54 | 83 | $49,883 | $601 | premium | 7.1% | (817) 578-8904 |
| 29 | CENTENNIAL HEART LLC | NASHVILLE | TN | NURSE PRACTITIONER | 121 | 81 | $11,479 | $142 | premium | 34.5% | (615) 515-1900 |
| 30 | FAIRVIEW HEIGHTS MEDICAL GROUP SC | SHILOH | IL | NURSE PRACTITIONER | 445 | 81 | $17,993 | $222 | premium | 32.9% | (618) 236-8000 |
| 31 | OROVILLE HOSPITAL | OROVILLE | CA | DIAGNOSTIC RADIOLOGY | 93 | 77 | $2,656 | $34 | premium | 3.4% | (530) 533-8500 |
| 32 | HEALTHCARE PARTNERS AFFILIATES MEDICAL GROUP | CARSON | CA | INTERNAL MEDICINE | 771 | 69 | $17,250 | $250 | premium | 3.1% | (310) 830-9706 |
| 33 | HEARTPLACE PLLC | PLANO | TX | INTERVENTIONAL CARDIOLOGY | 93 | 69 | $7,600 | $110 | premium | 5.9% | (972) 985-8838 |
| 34 | ATHAR M. ANSARI M D INC. | EL CENTRO | WI | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 2 | 65 | $11,765 | $181 | premium | 83.3% | (760) 353-3222 |
| 35 | MIDWEST HEART AND VASCULAR SPECIALISTS LLC | OVERLAND PARK | KS | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 81 | 64 | $9,242 | $144 | premium | 13.5% | (816) 523-7088 |
| 36 | PRACTICE ASSOCIATES MEDICAL GROUP | MORRISTOWN | NJ | NURSE PRACTITIONER | 1404 | 61 | $9,089 | $149 | premium | 19.5% | (973) 971-5596 |
| 37 | FLORIDA HOSPITAL PHYSICIAN GROUP INC | TAMPA | FL | DIAGNOSTIC RADIOLOGY | 891 | 61 | $7,991 | $131 | premium | 3.2% | (813) 615-7075 |
| 38 | PHOEBE PHYSICIAN GROUP INC | AMERICUS | PA | NURSE PRACTITIONER | 442 | 59 | $10,679 | $181 | premium | 29.8% | (229) 928-2882 |
| 39 | FLORIDA HOSPITAL HEALTHCARE PARTNERS, INC | DAYTONA BEACH | FL | PHYSICIAN ASSISTANT | 588 | 58 | $7,598 | $131 | premium | 3.1% | (386) 231-6000 |
| 40 | SHOCK TRAUMA ASSOCIATES PA | BALTIMORE | MD | NURSE PRACTITIONER | 256 | 52 | $32,552 | $626 | premium | 21.8% | (410) 328-6704 |
| 41 | FLORIDA CARDIAC CONSULTANTS INC | SARASOTA | FL | PHYSICIAN ASSISTANT | 13 | 51 | $36,822 | $722 | premium | 2.7% | — |
| 42 | FREEMAN-OAK HILL HEALTH SYSTEM | JOPLIN | MO | NURSE PRACTITIONER | 382 | 51 | $23,152 | $454 | premium | 16.8% | (417) 347-8200 |
| 43 | COLLIER HMA PHYSICIAN MANAGEMENT LLC | NAPLES | FL | NURSE PRACTITIONER | 95 | 50 | $7,800 | $156 | premium | 2.6% | — |
| 44 | CABRILLO CARDIOLOGY MEDICAL GROUP INC | OXNARD | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 9 | 49 | $23,520 | $480 | premium | 2.2% | (805) 351-8212 |
| 45 | BEAVER MEDICAL GROUP P C | REDLANDS | CA | FAMILY PRACTICE | 247 | 48 | $4,897 | $102 | premium | 2.1% | (909) 294-3682 |
| 46 | UNIVERSITY OF VERMONT MEDICAL CENTER INC | BURLINGTON | VT | PHYSICIAN ASSISTANT | 1194 | 47 | $9,171 | $195 | premium | 38.2% | (802) 847-0000 |
| 47 | WIREGRASS CLINIC LLC | DOTHAN | AL | NURSE PRACTITIONER | 67 | 46 | $5,888 | $128 | premium | 18.7% | — |
| 48 | PROVIDENCE HEALTH AND SERVICES - WASHINGTON | WALLA WALLA | WA | NEUROLOGY | 269 | 44 | $5,808 | $132 | premium | 22.7% | (509) 897-3333 |
| 49 | PROVIDENCE MEDICAL FOUNDATION | FULLERTON | CA | PHYSICIAN ASSISTANT | 1455 | 43 | $5,934 | $138 | premium | 1.9% | (714) 871-3006 |
| 50 | JAMES RIVER CARDIOLOGY, LLC | COLONIAL HEIGHTS | VA | PHYSICIAN ASSISTANT | 49 | 40 | $18,090 | $452 | premium | 8.0% | (804) 520-1764 |
| 51 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 38 | $9,159 | $241 | premium | 6.5% | — |
| 52 | COLUMBUS COMMUNITY HOSPITAL | COLUMBUS | TX | FAMILY PRACTICE | 12 | 38 | $5,472 | $144 | premium | 3.3% | (979) 732-2371 |
| 53 | MIDWEST HEART AND VASCULAR SPECIALISTS LLC | OVERLAND PARK | IL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 81 | 37 | $5,387 | $146 | premium | 15.0% | (816) 523-7088 |
| 54 | PHOENIX HEART PLLC | GLENDALE | AZ | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 16 | 37 | $5,254 | $142 | premium | 52.9% | — |
| 55 | CARDIOLOGY ASSOCIATES OF OCEAN COUNTY | BRICK | NJ | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 5 | 34 | $5,286 | $155 | premium | 10.9% | (732) 458-7575 |
| 56 | ST DAVIDS HEART AND VASCULAR PLLC | AUSTIN | AL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 199 | 32 | $4,608 | $144 | premium | 13.0% | (512) 899-2028 |
| 57 | THE CURATORS OF THE UNIVERSITY OF MISSOURI | COLUMBIA | MO | PHYSICIAN ASSISTANT | 1116 | 32 | $5,664 | $177 | premium | 10.6% | (573) 882-2667 |
| 58 | BHS PHYSICIANS NETWORK, INC | SAN ANTONIO | TX | PHYSICIAN ASSISTANT | 696 | 30 | $4,413 | $147 | premium | 2.6% | (210) 614-7414 |
| 59 | BELL CLINIC, P.A. | HELENA | AR | FAMILY PRACTICE | 2 | 30 | $3,150 | $105 | premium | 26.1% | (870) 338-8163 |
| 60 | WEST VALLEY MEDICAL GROUP SPECIALTY SERVICES LLC | CALDWELL | ID | GENERAL SURGERY | 6 | 30 | $4,170 | $139 | premium | 69.8% | (208) 459-4641 |
| 61 | CARDIOLOGY OF THE FLORIDA KEYS LLC | KEY WEST | PA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 4 | 30 | $14,310 | $477 | premium | 15.2% | (305) 294-8334 |
| 62 | ATRIUS HEALTH INC | BOSTON | MA | NURSE PRACTITIONER | 1196 | 30 | $5,820 | $194 | premium | 8.6% | (617) 421-1000 |
| 63 | GENERAL PHYSICIAN PC | BUFFALO | IL | PHYSICIAN ASSISTANT | 462 | 28 | $2,240 | $80 | premium | 11.4% | (716) 884-3000 |
| 64 | MASSAC MEMORIAL HOSPITAL | METROPOLIS | IL | NURSE PRACTITIONER | 17 | 28 | $6,720 | $240 | premium | 11.4% | (618) 524-8381 |
| 65 | MISSION HEALTH COMMUNITY MULTISPECIALTY PROVIDERS LLC | ASHEVILLE | MI | PHYSICIAN ASSISTANT | 593 | 26 | $5,486 | $211 | premium | 8.2% | (828) 213-1740 |
| 66 | HOUSTON COUNTY HEALTHCARE AUTHORITY | DOTHAN | AL | INTERNAL MEDICINE | 258 | 22 | $2,551 | $116 | premium | 8.9% | (334) 793-8087 |
| 67 | ATRIUS HEALTH INC | BOSTON | RI | NURSE PRACTITIONER | 1196 | 22 | $4,268 | $194 | premium | 100.0% | (617) 421-1000 |
| 68 | CARDIOLOGY AND ELECTROPHYSIOLOGY CLINIC FORT WORTH PC | FORT WORTH | TX | NURSE PRACTITIONER | 4 | 21 | $6,300 | $300 | premium | 1.8% | (817) 368-6480 |
| 69 | KINGMAN HEALTHCARE INC | KINGMAN | OH | DIAGNOSTIC RADIOLOGY | 178 | 20 | $7,730 | $386 | premium | 4.5% | (928) 263-4722 |
| 70 | PROSCAN RADIOLOGY, LLC | CINCINNATI | KY | DIAGNOSTIC RADIOLOGY | 60 | 19 | $5,947 | $313 | premium | 3.4% | (513) 351-3000 |
| 71 | PACIFIC CARDIOVASCULAR ASSOCIATES MEDICAL GROUP, INC. | LAGUNA HILLS | NC | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 22 | 19 | $4,666 | $246 | premium | 2.0% | (714) 445-0220 |
| 72 | BAPTIST CARDIOLOGY, INC. | JACKSONVILLE | FL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 99 | 19 | $2,489 | $131 | premium | 1.0% | (904) 399-1171 |
| 73 | KINGMAN HEALTHCARE INC | KINGMAN | AZ | DIAGNOSTIC RADIOLOGY | 178 | 18 | $6,957 | $386 | premium | 25.7% | (928) 263-4722 |
| 74 | MERCY HEALTH PHYSICIANS CINCINNATI SPECIALTY CARE LLC | CINCINNATI | OH | NURSE PRACTITIONER | 347 | 18 | $6,982 | $388 | premium | 4.1% | (513) 751-4222 |
| 75 | ORLANDO HEALTH MEDICAL GROUP INC | ORLANDO | FL | PHYSICIAN ASSISTANT | 2145 | 17 | $7,667 | $451 | premium | 0.9% | (407) 896-1100 |
| 76 | CARDIOLOGY OF THE FLORIDA KEYS LLC | KEY WEST | FL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 4 | 17 | $8,109 | $477 | premium | 0.9% | (305) 294-8334 |
| 77 | GENESYS PRACTICE PARTNERS INC | GRAND BLANC | MI | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 36 | 17 | $1,241 | $73 | premium | 5.3% | (810) 606-7550 |
| 78 | WESTERN MISSOURI MEDICAL CENTER | WARRENSBURG | MO | NURSE PRACTITIONER | 72 | 16 | $2,378 | $149 | premium | 5.3% | (660) 747-2500 |
| 79 | OKALOOSA CARDIOLOGY PA | CRESTVIEW | IL | NURSE PRACTITIONER | 11 | 16 | $1,424 | $89 | premium | 6.5% | (850) 682-7212 |
| 80 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 16 | $5,008 | $313 | premium | 100.0% | (801) 261-8346 |
| 81 | MISSION HEALTH COMMUNITY MULTISPECIALTY PROVIDERS LLC | ASHEVILLE | OH | PHYSICIAN ASSISTANT | 593 | 15 | $3,165 | $211 | premium | 3.4% | (828) 213-1740 |
| 82 | OKALOOSA CARDIOLOGY PA | CRESTVIEW | OH | NURSE PRACTITIONER | 11 | 15 | $1,334 | $89 | premium | 3.4% | (850) 682-7212 |
| 83 | EAST GEORGIA HMA PHYSICIAN MANAGEMENT LLC | STATESBORO | GA | NURSE PRACTITIONER | 41 | 15 | $1,860 | $124 | premium | 1.1% | (912) 764-9684 |
| 84 | LAKESIDE HEART AND VASCULAR CENTER PLLC | LAKE HAVASU CITY | AZ | NURSE PRACTITIONER | 27 | 15 | $1,320 | $88 | premium | 21.4% | (928) 453-2727 |
| 85 | CARIENT HEART AND VASCULAR, LLC | MANASSAS | VA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 26 | 15 | $5,775 | $385 | premium | 3.0% | 57158117712611 |
| 86 | HEART AND RHYTHM ASSOCIATES, PLLC | PANAMA CITY | FL | CARDIAC ELECTROPHYSIOLOGY | 2 | 14 | $3,794 | $271 | premium | 0.7% | (850) 763-8776 |
| 87 | HENRY FORD HEALTH ROCHESTER HOSPITAL | ROCHESTER | MI | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 99 | 14 | $5,530 | $395 | premium | 4.4% | (248) 652-5000 |
| 88 | TRINITY HEALTH MID-ATLANTIC MEDICAL GROUP | LANGHORNE | PA | NURSE PRACTITIONER | 383 | 14 | $1,680 | $120 | premium | 7.1% | — |
| 89 | PALMETTO EKG AND ECHO READERS PA | HIALEAH | FL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 7 | 14 | $1,918 | $137 | premium | 0.7% | (305) 665-4614 |
| 90 | SUPERCLINIC PROFESSIONALS MEDICAL CORP A CALIFORNIA CORPORATION | NORTH HOLLYWOOD | CA | INTERNAL MEDICINE | 9 | 14 | $4,200 | $300 | premium | 0.6% | (818) 762-8702 |
| 91 | FIRST COAST CARDIOVASCULAR INSTITUTE, LLC | JACKSONVILLE | GA | NURSE PRACTITIONER | 43 | 14 | $1,394 | $100 | premium | 1.0% | (904) 493-3333 |
| 92 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | LOS ANGELES | FL | INTERNAL MEDICINE | 1424 | 14 | $2,184 | $156 | premium | 0.7% | (310) 825-7922 |
| 93 | ST DAVIDS HEART AND VASCULAR PLLC | AUSTIN | TX | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 199 | 13 | $1,892 | $146 | premium | 1.1% | (512) 899-2028 |
| 94 | LAKESIDE HEART AND VASCULAR CENTER PLLC | LAKE HAVASU CITY | ID | NURSE PRACTITIONER | 27 | 13 | $1,144 | $88 | premium | 30.2% | (928) 453-2727 |
| 95 | MADISON COUNTY HOSPITAL HEALTH SYSTEMS INC | MADISON | FL | NURSE PRACTITIONER | 11 | 13 | $7,766 | $597 | premium | 0.7% | (850) 253-1923 |
| 96 | FROEDTERT MANITOWOC MEDICAL GROUP, LLC | SHEBOYGAN | WI | NURSE PRACTITIONER | 165 | 13 | $9,433 | $726 | premium | 16.7% | (920) 320-2436 |
| 97 | HEART OF THE VILLAGES PLC | LADY LAKE | FL | NURSE PRACTITIONER | 16 | 13 | $1,491 | $115 | premium | 0.7% | (352) 674-2080 |
| 98 | WK PIERREMONT CARDIOLOGY | SHREVEPORT | LA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 25 | 13 | $1,677 | $129 | premium | 4.6% | (318) 212-3858 |
| 99 | SENTARA MEDICAL GROUP | NORFOLK | VA | PHYSICIAN ASSISTANT | 1404 | 12 | $3,168 | $264 | premium | 2.4% | — |
| 100 | MCLEOD REGIONAL MEDICAL CENTER OF THE PEE DEE INC | FLORENCE | SC | NURSE PRACTITIONER | 409 | 12 | $2,588 | $216 | premium | 4.2% | (843) 777-2000 |
Showing the top 100 of 90 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 →