99223 — Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
6,235,531 observed fee-for-service (49%) · ~6,427,814 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; 6 states 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 | 99223 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | NY | PHYSICIAN ASSISTANT | 6294 | 56,673 | $51,309,993 | $905 | premium | 10.5% | — |
| 2 | ADVOCATE HEALTH AND HOSPITALS CORPORATION | BUFFALO GROVE | IL | NURSE PRACTITIONER | 3045 | 38,565 | $17,705,311 | $459 | premium | 8.2% | (847) 459-1160 |
| 3 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 36,659 | $16,155,354 | $441 | premium | 7.8% | — |
| 4 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 33,447 | $22,982,838 | $687 | premium | 3.1% | (415) 600-1020 |
| 5 | PRACTICE ASSOCIATES MEDICAL GROUP | MORRISTOWN | NJ | NURSE PRACTITIONER | 1404 | 26,121 | $18,464,439 | $707 | premium | 6.1% | (973) 971-5596 |
| 6 | ORLANDO HEALTH MEDICAL GROUP INC | ORLANDO | FL | PHYSICIAN ASSISTANT | 2145 | 26,118 | $14,138,670 | $541 | premium | 2.5% | (407) 896-1100 |
| 7 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 25,075 | $16,637,246 | $663 | premium | 2.3% | (916) 681-8852 |
| 8 | VIRTUA MEDICAL GROUP, PA | VOORHEES | NJ | PHYSICIAN ASSISTANT | 1662 | 24,745 | $11,252,990 | $455 | premium | 5.7% | (856) 247-7260 |
| 9 | WELLSTAR MEDICAL GROUP LLC | MARIETTA | GA | NURSE PRACTITIONER | 3060 | 23,771 | $11,588,473 | $488 | premium | 9.4% | (770) 422-2004 |
| 10 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | LOS ANGELES | CA | INTERNAL MEDICINE | 1424 | 23,348 | $29,937,493 | $1,282 | premium | 2.2% | (310) 825-7922 |
| 11 | HACKENSACK MERIDIAN HEALTH MEDICAL GROUP - SPECIALTY CARE PC | NEPTUNE | NJ | NURSE PRACTITIONER | 1878 | 22,040 | $12,551,197 | $569 | premium | 5.1% | (732) 362-3663 |
| 12 | BAYCARE MEDICAL GROUP, INC. | CLEARWATER | FL | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 1526 | 21,962 | $9,450,609 | $430 | premium | 2.1% | (727) 725-5060 |
| 13 | HEALTHTEXAS PROVIDER NETWORK | DALLAS | TX | PHYSICIAN ASSISTANT | 2482 | 20,496 | $10,631,795 | $519 | premium | 2.7% | — |
| 14 | SENTARA MEDICAL GROUP | NORFOLK | VA | PHYSICIAN ASSISTANT | 1404 | 20,439 | $6,940,297 | $340 | premium | 7.9% | — |
| 15 | PLATINUM HOSPITALISTS LLP | LAS VEGAS | NV | INTERNAL MEDICINE | 192 | 20,053 | $12,511,878 | $624 | premium | 14.7% | (702) 407-7700 |
| 16 | CAROLINAS PHYSICIANS NETWORK INC | CHARLOTTE | NC | PHYSICIAN ASSISTANT | 2360 | 20,007 | $13,595,041 | $680 | premium | 8.5% | (704) 667-1000 |
| 17 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 19,505 | $16,914,758 | $867 | premium | 1.8% | (916) 983-7476 |
| 18 | HOSPITAL MEDICINE SERVICES OF FL, LLC | LAKE CITY | FL | INTERNAL MEDICINE | 523 | 19,266 | $20,831,635 | $1,081 | premium | 1.8% | (850) 719-9000 |
| 19 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 18,771 | $25,817,903 | $1,375 | premium | 3.5% | (212) 263-9700 |
| 20 | MAIN LINE HEALTHCARE | BRYN MAWR | PA | NURSE PRACTITIONER | 1157 | 18,670 | $8,207,483 | $440 | premium | 4.4% | — |
| 21 | ALLINA HEALTH SYSTEM | MINNEAPOLIS | MN | PHYSICIAN ASSISTANT | 3855 | 17,926 | $13,975,424 | $780 | premium | 19.6% | (612) 863-4000 |
| 22 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 17,811 | $10,631,440 | $597 | premium | 3.8% | — |
| 23 | SMH PHYSICIAN SERVICES INC | SARASOTA | FL | PHYSICIAN ASSISTANT | 766 | 17,746 | $7,341,737 | $414 | premium | 1.7% | — |
| 24 | MILLENNIUM PHYSICIAN GROUP LLC | PORT CHARLOTTE | FL | PHYSICIAN ASSISTANT | 953 | 17,668 | $6,358,634 | $360 | premium | 1.7% | (941) 255-3535 |
| 25 | LEE HEALTH SYSTEM INC | FORT MYERS | FL | NURSE PRACTITIONER | 1370 | 17,524 | $12,711,182 | $725 | premium | 1.7% | (239) 343-9888 |
| 26 | INOVA HEALTH CARE SERVICES | FALLS CHURCH | VA | NURSE PRACTITIONER | 1818 | 17,485 | $9,419,294 | $539 | premium | 6.7% | — |
| 27 | ST LUKES PHYSICIAN GROUP INC | BETHLEHEM | PA | PHYSICIAN ASSISTANT | 2164 | 17,257 | $7,046,094 | $408 | premium | 4.0% | (484) 526-2400 |
| 28 | LEHIGH VALLEY PHYSICIAN GROUP | ALLENTOWN | PA | PHYSICIAN ASSISTANT | 2389 | 17,157 | $6,799,921 | $396 | premium | 4.0% | — |
| 29 | BANNER HOSPITAL BASED PHYSICIANS ARIZONA LLC | MESA | AZ | INTERNAL MEDICINE | 644 | 17,105 | $8,953,699 | $523 | premium | 7.2% | (480) 412-3000 |
| 30 | AURORA MEDICAL GROUP, INC. | MILWAUKEE | WI | DIAGNOSTIC RADIOLOGY | 3696 | 17,044 | $15,350,195 | $901 | premium | 16.3% | (414) 421-8400 |
| 31 | MEDSTAR MEDICAL GROUP II LLC | WASHINGTON | MD | PHYSICIAN ASSISTANT | 3707 | 16,538 | $8,096,599 | $490 | premium | 7.5% | (202) 429-2401 |
| 32 | DUPAGE MEDICAL GROUP LTD | GLEN ELLYN | IL | PHYSICIAN ASSISTANT | 1323 | 16,414 | $7,120,969 | $434 | premium | 3.5% | (630) 469-9200 |
| 33 | NOVANT HEALTH MEDICAL GROUP, LLC | WINSTON SALEM | NC | PHYSICIAN ASSISTANT | 2389 | 16,043 | $9,044,751 | $564 | premium | 6.8% | (704) 384-8200 |
| 34 | MEMORIAL HERMANN MEDICAL GROUP | HOUSTON | TX | HOSPITALIST | 747 | 15,739 | $6,301,338 | $400 | premium | 2.1% | (713) 242-2222 |
| 35 | ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI | NEW YORK | NY | PHYSICIAN ASSISTANT | 2818 | 15,453 | $12,360,702 | $800 | premium | 2.9% | (212) 241-4812 |
| 36 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 15,247 | $11,825,741 | $776 | premium | 1.4% | (650) 723-4000 |
| 37 | TEXAS HEALTH PHYSICIANS GROUP | FORT WORTH | TX | PHYSICIAN ASSISTANT | 1350 | 15,178 | $10,160,129 | $669 | premium | 2.0% | (817) 281-2977 |
| 38 | RWJBH EMERGENCY MEDICINE ASSOCIATES, LLC | ELIZABETH | NJ | EMERGENCY MEDICINE | 780 | 14,607 | $15,620,360 | $1,069 | premium | 3.4% | (908) 994-5422 |
| 39 | PROVIDENCE MEDICAL FOUNDATION | FULLERTON | CA | PHYSICIAN ASSISTANT | 1455 | 14,583 | $7,590,949 | $521 | premium | 1.3% | (714) 871-3006 |
| 40 | CEDARS-SINAI MEDICAL CARE FOUNDATION | LOS ANGELES | CA | PHYSICIAN ASSISTANT | 1699 | 14,308 | $8,998,317 | $629 | premium | 1.3% | (310) 423-0674 |
| 41 | CENTRAL DUPAGE PHYSICIAN GROUP | WHEATON | IL | PHYSICIAN ASSISTANT | 1097 | 14,261 | $5,396,042 | $378 | premium | 3.0% | (630) 933-4800 |
| 42 | KANSAS UNIVERSITY PHYSICIANS INC | KANSAS CITY | KS | NURSE PRACTITIONER | 1815 | 14,063 | $5,997,146 | $426 | premium | 15.0% | (913) 588-1227 |
| 43 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 13,930 | $5,735,566 | $412 | premium | 1.8% | (254) 724-2663 |
| 44 | HEALTH FIRST MEDICAL GROUP, LLC | MELBOURNE | FL | NURSE PRACTITIONER | 669 | 13,505 | $5,460,579 | $404 | premium | 1.3% | (321) 434-8878 |
| 45 | OHIOHEALTH CORPORATION | COLUMBUS | OH | PHYSICIAN ASSISTANT | 2282 | 13,441 | $4,815,578 | $358 | premium | 4.0% | — |
| 46 | CLEVELAND CLINIC | CLEVELAND | OH | PHYSICIAN ASSISTANT | 6828 | 13,091 | $14,609,994 | $1,116 | premium | 3.9% | — |
| 47 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 12,827 | $10,283,774 | $802 | premium | 5.1% | (617) 724-0287 |
| 48 | WARREN CLINIC INC | TULSA | OK | NURSE PRACTITIONER | 772 | 12,769 | $5,752,385 | $450 | premium | 10.9% | (918) 502-4720 |
| 49 | BAYSTATE MEDICAL PRACTICES INC | SPRINGFIELD | MA | PHYSICIAN ASSISTANT | 1326 | 12,582 | $6,031,565 | $479 | premium | 5.0% | — |
| 50 | THE EMORY CLINIC INC | ATLANTA | GA | NURSE PRACTITIONER | 3484 | 12,454 | $8,025,455 | $644 | premium | 4.9% | (404) 778-7525 |
| 51 | GALEN INPATIENT PHYSICIANS PC | PENSACOLA | CA | HOSPITALIST | 1012 | 12,422 | $13,197,492 | $1,062 | premium | 1.1% | (850) 416-7000 |
| 52 | FRANCISCAN PHYSICIAN NETWORK | INDIANAPOLIS | IN | PHYSICIAN ASSISTANT | 1151 | 12,363 | $4,643,272 | $376 | premium | 6.0% | — |
| 53 | SAINT LUKES PHYSICIAN GROUP INC | KANSAS CITY | MO | NURSE PRACTITIONER | 1228 | 12,268 | $6,232,856 | $508 | premium | 7.4% | — |
| 54 | COMMUNITY MEDICAL ASSOCIATES INC | LOUISVILLE | KY | NURSE PRACTITIONER | 1377 | 11,991 | $7,766,367 | $648 | premium | 9.3% | (502) 937-2209 |
| 55 | METRO INFECTIOUS DISEASE CONSULTANTS LLC | BURR RIDGE | IL | INFECTIOUS DISEASE | 396 | 11,730 | $5,619,178 | $479 | premium | 2.5% | (888) 220-6432 |
| 56 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 11,633 | $4,647,919 | $400 | premium | 2.7% | — |
| 57 | BAPTIST PRIMARY CARE INC | JACKSONVILLE | FL | FAMILY PRACTICE | 446 | 11,554 | $5,454,377 | $472 | premium | 1.1% | — |
| 58 | PIEDMONT HOSPITALIST PHYSICIANS LLC | ATLANTA | GA | INTERNAL MEDICINE | 489 | 11,483 | $7,830,905 | $682 | premium | 4.6% | (404) 605-5000 |
| 59 | ARKANSAS HEALTH GROUP | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 666 | 11,367 | $3,397,168 | $299 | premium | 11.1% | (501) 202-2093 |
| 60 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 11,080 | $4,577,573 | $413 | premium | 7.7% | — |
| 61 | UMASS MEMORIAL MEDICAL GROUP INC | WORCESTER | MA | PHYSICIAN ASSISTANT | 2483 | 10,539 | $7,107,707 | $674 | premium | 4.2% | (508) 334-1000 |
| 62 | AFFILIATED HOSPITALISTS PLC | PHOENIX | AZ | INTERNAL MEDICINE | 84 | 10,512 | $3,170,788 | $302 | premium | 4.4% | (602) 445-0751 |
| 63 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 10,415 | $8,330,551 | $800 | premium | 4.1% | (617) 732-5500 |
| 64 | STONY BROOK INTERNISTS UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | HOSPITALIST | 414 | 10,397 | $5,505,070 | $529 | premium | 1.9% | (631) 444-1560 |
| 65 | ID CARE LLC | HILLSBOROUGH | NJ | INFECTIOUS DISEASE | 121 | 10,304 | $3,709,165 | $360 | premium | 2.4% | (908) 281-0221 |
| 66 | USACS INTEGRATED ACUTE CARE SERVICES OF TEXAS, PLLC | KERRVILLE | TX | INTERNAL MEDICINE | 407 | 10,145 | $12,291,422 | $1,212 | premium | 1.3% | (830) 258-7747 |
| 67 | IHA HEALTH SERVICES CORPORATION | YPSILANTI | MI | PHYSICIAN ASSISTANT | 1144 | 10,106 | $4,279,644 | $423 | premium | 3.5% | — |
| 68 | BAYVIEW PHYSICIAN SERVICES PC | CHESAPEAKE | VA | PHYSICIAN ASSISTANT | 322 | 10,056 | $3,642,189 | $362 | premium | 3.9% | (757) 410-4488 |
| 69 | CHS PHYSICIAN PARTNERS PC | ROSLYN | NY | PHYSICIAN ASSISTANT | 734 | 9,925 | $5,974,108 | $602 | premium | 1.8% | — |
| 70 | TRIHEALTH H LLC | CINCINNATI | OH | OBSTETRICS/GYNECOLOGY | 853 | 9,885 | $4,589,979 | $464 | premium | 3.0% | (513) 246-7000 |
| 71 | FLORIDA HOSPITAL MEDICINE SERVICES, LLC | FORT LAUDERDALE | FL | INTERNAL MEDICINE | 272 | 9,711 | $7,046,676 | $726 | premium | 0.9% | (954) 355-4400 |
| 72 | WAKEMED SPECIALISTS GROUP LLC | RALEIGH | NC | PHYSICIAN ASSISTANT | 860 | 9,599 | $4,501,199 | $469 | premium | 4.1% | (919) 350-7270 |
| 73 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 9,583 | $6,386,414 | $666 | premium | 4.0% | (800) 603-0558 |
| 74 | SOUTH SOUND INPATIENT PHYSICIANS PLLC | PUYALLUP | WA | INTERNAL MEDICINE | 434 | 9,558 | $13,014,163 | $1,362 | premium | 7.9% | (253) 697-4000 |
| 75 | FLORIDA HOSPITAL PHYSICIAN GROUP INC | TAMPA | FL | DIAGNOSTIC RADIOLOGY | 891 | 9,490 | $4,750,080 | $501 | premium | 0.9% | (813) 615-7075 |
| 76 | GEISINGER CLINIC | DANVILLE | PA | PHYSICIAN ASSISTANT | 3426 | 9,411 | $4,596,489 | $488 | premium | 2.2% | (570) 271-6144 |
| 77 | FRANCISCAN MEDICAL GROUP | TACOMA | WA | PHYSICIAN ASSISTANT | 1407 | 9,371 | $5,027,584 | $537 | premium | 7.7% | (253) 428-2200 |
| 78 | OSF MULTI-SPECIALTY GROUP | PEORIA | IL | NURSE PRACTITIONER | 2091 | 9,349 | $4,578,846 | $490 | premium | 2.0% | (309) 683-5050 |
| 79 | PHYSICIANS REFERRAL SERVICE | HOUSTON | TX | NURSE PRACTITIONER | 2696 | 9,297 | $6,101,531 | $656 | premium | 1.2% | (713) 592-5433 |
| 80 | BEAUMONT MEDICAL GROUP- SPECIALTY SERVICES | ROYAL OAK | MI | PHYSICIAN ASSISTANT | 833 | 9,279 | $3,959,376 | $427 | premium | 3.3% | (248) 898-5058 |
| 81 | NORTH TEXAS PHYSICIAN SERVICES, PLLC | TYLER | TX | INTERNAL MEDICINE | 235 | 9,249 | $9,925,854 | $1,073 | premium | 1.2% | (903) 593-8441 |
| 82 | QUESTCARE HOSPITALISTS PLLC | PLANO | TX | INTERNAL MEDICINE | 281 | 9,209 | $9,297,978 | $1,010 | premium | 1.2% | (954) 939-5000 |
| 83 | PACIFIC HOSPITALIST ASSOCIATES A MEDICAL CORPORATION | NEWPORT BEACH | CA | HOSPITALIST | 91 | 9,207 | $3,533,054 | $384 | premium | 0.9% | (877) 742-4624 |
| 84 | EISENHOWER MEDICAL CENTER | RANCHO MIRAGE | CA | NURSE PRACTITIONER | 457 | 9,196 | $4,796,973 | $522 | premium | 0.8% | (760) 340-3911 |
| 85 | SUMMIT MEDICAL GROUP INC | EDGEWOOD | KY | NURSE PRACTITIONER | 806 | 9,086 | $3,859,892 | $425 | premium | 7.0% | (859) 578-5880 |
| 86 | POUDRE VALLEY MEDICAL GROUP LLC | COLORADO SPRINGS | CO | PHYSICIAN ASSISTANT | 2390 | 9,050 | $3,778,784 | $418 | premium | 9.3% | — |
| 87 | COTTON-O'NEIL CLINIC REVOCABLE TRUST | TOPEKA | KS | NURSE PRACTITIONER | 649 | 9,013 | $3,317,021 | $368 | premium | 9.6% | (785) 354-9591 |
| 88 | FLORIDA HOSPITAL MEDICAL GROUP INC | MAITLAND | FL | PHYSICIAN ASSISTANT | 1634 | 9,011 | $4,895,965 | $543 | premium | 0.9% | (407) 200-2700 |
| 89 | HOSPITALIST MEDICINE PHYSICIANS OF TEXAS PLLC | WICHITA | TX | INTERNAL MEDICINE | 714 | 8,994 | $11,923,284 | $1,326 | premium | 1.2% | (316) 291-4396 |
| 90 | AKDHC LLC | PHOENIX | AZ | NEPHROLOGY | 129 | 8,809 | $3,420,772 | $388 | premium | 3.7% | (602) 200-8288 |
| 91 | FLORIDA CANCER SPECIALISTS AND RESEARCH INSTITUTE, LLC | FORT MYERS | FL | HEMATOLOGY/ONCOLOGY | 437 | 8,765 | $4,909,412 | $560 | premium | 0.8% | (239) 561-9622 |
| 92 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 8,731 | $3,519,705 | $403 | premium | 28.9% | (801) 261-8346 |
| 93 | COMMUNITY CARE SERVICES LLC | RENO | NV | NURSE PRACTITIONER | 601 | 8,606 | $4,603,688 | $535 | premium | 6.3% | — |
| 94 | UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL CENTER AT DALLAS | DALLAS | TX | PHYSICIAN ASSISTANT | 3200 | 8,448 | $5,699,514 | $675 | premium | 1.1% | (214) 633-5555 |
| 95 | MEDSTAR MEDICAL GROUP II LLC | WASHINGTON | DC | PHYSICIAN ASSISTANT | 3707 | 8,424 | $4,095,632 | $486 | premium | 22.7% | (202) 429-2401 |
| 96 | JOHN MUIR PHYSICIAN NETWORK | WALNUT CREEK | CA | FAMILY PRACTICE | 489 | 8,371 | $5,067,774 | $605 | premium | 0.8% | (925) 296-9720 |
| 97 | MONTEFIORE MEDICAL CENTER | BRONX | NY | PHYSICAL THERAPIST IN PRIVATE PRACTICE | 2796 | 8,293 | $9,819,699 | $1,184 | premium | 1.5% | (866) 633-8255 |
| 98 | BEST PRACTICES INPATIENT CARE, LTD. | BARRINGTON | IL | INTERNAL MEDICINE | 81 | 8,157 | $3,536,121 | $434 | premium | 1.7% | (847) 381-9600 |
| 99 | REGENTS OF THE UNIVERSITY OF CALIFORNIA | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 2057 | 8,123 | $6,163,477 | $759 | premium | 0.8% | (800) 926-8273 |
| 100 | UNIVERSITY OF PITTSBURGH PHYSICIANS | PITTSBURGH | PA | DIAGNOSTIC RADIOLOGY | 4291 | 8,119 | $4,103,635 | $505 | premium | 1.9% | — |
Showing the top 100 of 9,494 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 →