J1453 — Injection, fosaprepitant, 1 mg
10,257,054 observed fee-for-service (49%) · ~10,512,757 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; 1 state 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 | J1453 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | TEXAS ONCOLOGY PA | DALLAS | TX | PHYSICIAN ASSISTANT | 995 | 2,195,101 | $10,976,250 | $5 | premium | 79.2% | — |
| 2 | VIRGINIA ONCOLOGY ASSOCIATES | NORFOLK | VA | PHYSICIAN ASSISTANT | 123 | 334,050 | $2,004,300 | $6 | premium | 68.6% | — |
| 3 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | LOS ANGELES | CA | INTERNAL MEDICINE | 1424 | 311,550 | $3,184,650 | $10 | premium | 30.5% | (310) 825-7922 |
| 4 | ROCKY MOUNTAIN CANCER CENTERS LLP | COLORADO SPRINGS | CO | NURSE PRACTITIONER | 129 | 307,350 | $1,844,100 | $6 | premium | 93.5% | (719) 577-2555 |
| 5 | ALLISON CURTIS KINGSLEY MEOZ MICHAEL AND SANCHEZ PC | LAS VEGAS | NV | NURSE PRACTITIONER | 71 | 296,250 | $1,777,500 | $6 | premium | 89.9% | (702) 952-2140 |
| 6 | ONCOLOGY HEMATOLOGY CONSULTANTS, PA | FORT WORTH | TX | HEMATOLOGY/ONCOLOGY | 69 | 248,100 | $1,240,500 | $5 | premium | 9.0% | (817) 759-7000 |
| 7 | ALLIANCE CANCER SPECIALISTS P.C. | LANGHORNE | PA | HEMATOLOGY/ONCOLOGY | 44 | 230,400 | $1,382,400 | $6 | premium | 51.6% | (215) 750-5050 |
| 8 | ILLINOIS CANCER SPECIALISTS | ARLINGTON HEIGHTS | IL | HEMATOLOGY/ONCOLOGY | 29 | 220,650 | $1,323,900 | $6 | premium | 28.2% | (847) 259-4482 |
| 9 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 220,350 | $629,850 | $3 | premium | 28.1% | — |
| 10 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 218,100 | $219,822 | $1 | premium | 84.4% | (507) 284-2511 |
| 11 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 201,450 | $198,159 | $1 | premium | 30.3% | (904) 953-2000 |
| 12 | ONCOLOGY HEMATOLOGY WEST PC | OMAHA | NE | PHYSICIAN ASSISTANT | 55 | 193,801 | $951,044 | $5 | premium | 62.4% | (402) 393-3110 |
| 13 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 190,800 | $135,945 | $1 | premium | 31.8% | (800) 603-0558 |
| 14 | NEW YORK ONCOLOGY HEMATOLOGY PC | ALBANY | NY | NURSE PRACTITIONER | 83 | 149,700 | $898,200 | $6 | premium | 64.0% | (518) 262-6696 |
| 15 | TENNESSEE ONCOLOGY PLLC | NASHVILLE | TN | HEMATOLOGY/ONCOLOGY | 360 | 143,250 | $143,700 | $1 | premium | 84.7% | (615) 385-3751 |
| 16 | HEALTH FIRST MEDICAL GROUP, LLC | MELBOURNE | FL | NURSE PRACTITIONER | 669 | 133,350 | $666,750 | $5 | premium | 20.0% | (321) 434-8878 |
| 17 | MICHIGAN HEALTHCARE PROFESSIONALS PC | FARMINGTON HILLS | MI | INTERNAL MEDICINE | 518 | 129,300 | $158,004 | $1 | premium | 54.6% | (248) 477-0552 |
| 18 | IRONWOOD PHYSICIANS PC | MESA | AZ | HEMATOLOGY/ONCOLOGY | 114 | 128,400 | $385,200 | $3 | premium | 21.4% | (480) 981-1326 |
| 19 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 110,550 | $319,490 | $3 | premium | 10.8% | (415) 600-1020 |
| 20 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 109,500 | $625,500 | $6 | premium | 72.3% | (314) 747-3000 |
| 21 | BRYN MAWR MEDICAL SPECIALISTS ASSOCIATION | BRYN MAWR | PA | NURSE PRACTITIONER | 134 | 96,300 | $481,500 | $5 | premium | 21.6% | (610) 527-3800 |
| 22 | SOUTHERN CANCER CENTER PC | MOBILE | AL | MEDICAL ONCOLOGY | 25 | 93,750 | $562,500 | $6 | premium | 52.8% | (251) 625-6896 |
| 23 | DUPAGE MEDICAL GROUP LTD | GLEN ELLYN | IL | PHYSICIAN ASSISTANT | 1323 | 93,600 | $280,800 | $3 | premium | 11.9% | (630) 469-9200 |
| 24 | DESERT HEMATOLOGY-ONCOLOGY MEDICAL GROUP INC | RANCHO MIRAGE | CA | HEMATOLOGY/ONCOLOGY | 10 | 93,300 | $80,238 | $1 | premium | 9.1% | (760) 568-3613 |
| 25 | NORTHWEST MEDICAL SPECIALTIES PLLC | TACOMA | WA | HEMATOLOGY/ONCOLOGY | 39 | 92,850 | $23,025 | $0 | premium | 58.1% | (253) 428-8700 |
| 26 | HIGHLANDS ONCOLOGY GROUP PA | FAYETTEVILLE | AR | NURSE PRACTITIONER | 79 | 92,400 | $462,000 | $5 | premium | 49.6% | (479) 361-2585 |
| 27 | COLUMBUS ONCOLOGY ASSOCIATES INC | COLUMBUS | OH | HEMATOLOGY/ONCOLOGY | 24 | 90,300 | $145,650 | $2 | premium | 24.7% | (614) 442-3130 |
| 28 | REGIONAL CANCER CARE ASSOCIATES LLC | HACKENSACK | NJ | HEMATOLOGY/ONCOLOGY | 153 | 86,850 | $538,200 | $6 | premium | 43.3% | (201) 996-2210 |
| 29 | DAYTON PHYSICIANS LLC | CENTERVILLE | OH | NURSE PRACTITIONER | 40 | 83,700 | $62,775 | $1 | premium | 22.9% | (937) 293-1622 |
| 30 | CANCER SPECIALISTS LLC | JACKSONVILLE | FL | HEMATOLOGY/ONCOLOGY | 46 | 76,050 | $244,650 | $3 | premium | 11.4% | (904) 516-3737 |
| 31 | TORRANCE HEALTH ASSOCIATION INC | TORRANCE | CA | FAMILY PRACTICE | 298 | 68,270 | $94,806 | $1 | premium | 6.7% | (310) 257-7260 |
| 32 | SPRINGFIELD CLINIC, LLP | SPRINGFIELD | IL | NURSE PRACTITIONER | 686 | 67,665 | $270,660 | $4 | premium | 8.6% | (217) 544-6464 |
| 33 | TMC MEDICAL NETWORK | TUCSON | AZ | NURSE PRACTITIONER | 273 | 67,500 | $405,000 | $6 | premium | 11.3% | (520) 324-4230 |
| 34 | LEXINGTON HEALTH INC | WEST COLUMBIA | SC | NURSE PRACTITIONER | 909 | 66,750 | $359,115 | $5 | premium | 31.3% | (803) 744-4900 |
| 35 | SIERRA HEMATOLOGY AND ONCOLOGY MEDICAL CENTERS | CARMICHAEL | CA | HEMATOLOGY/ONCOLOGY | 16 | 57,750 | $155,925 | $3 | premium | 5.6% | (916) 962-1544 |
| 36 | ONCOLOGY HEMATOLOGY CARE INC | CINCINNATI | OH | NURSE PRACTITIONER | 66 | 57,600 | $345,600 | $6 | premium | 15.8% | (513) 751-2273 |
| 37 | MCFARLAND CLINIC PC | AMES | IA | PHYSICIAN ASSISTANT | 352 | 57,150 | $114,300 | $2 | premium | 37.3% | (515) 239-4400 |
| 38 | COASTAL CANCER CENTER LLC | MYRTLE BEACH | SC | RADIATION ONCOLOGY | 22 | 54,450 | $326,700 | $6 | premium | 25.5% | (843) 449-9415 |
| 39 | PRINCETON MEDICAL GROUP,P.A. | PRINCETON | NJ | INTERNAL MEDICINE | 36 | 52,950 | $211,800 | $4 | premium | 26.4% | (609) 924-9300 |
| 40 | AMERICAN ONCOLOGY PARTNERS PA | FORT WAYNE | GA | HEMATOLOGY/ONCOLOGY | 333 | 52,650 | $160,350 | $3 | premium | 49.6% | (260) 484-8830 |
| 41 | SANSUM CLINIC | SANTA BARBARA | CA | INTERNAL MEDICINE | 322 | 51,900 | $29,064 | $1 | premium | 5.1% | (805) 681-7500 |
| 42 | ANDERSON ONCOLOGY-HEMATOLOGY CLINIC PA | ANDERSON | SC | HEMATOLOGY/ONCOLOGY | 4 | 51,750 | $477,642 | $9 | premium | 24.3% | (864) 512-1658 |
| 43 | OREGON ONCOLOGY SPECIALISTS LLP | SALEM | OR | PHYSICIAN ASSISTANT | 41 | 47,550 | $153,041 | $3 | premium | 30.5% | (503) 485-0350 |
| 44 | HATTIESBURG CLINIC PA | HATTIESBURG | MS | FAMILY PRACTICE | 530 | 47,250 | $141,750 | $3 | premium | 59.0% | (601) 264-6000 |
| 45 | CONNECTICUT ONCOLOGY GROUP, P.C. | MIDDLETOWN | CT | HEMATOLOGY/ONCOLOGY | 6 | 46,952 | $70,875 | $2 | premium | 81.3% | (860) 358-2220 |
| 46 | AMERICAN ONCOLOGY PARTNERS PA | FORT WAYNE | IN | HEMATOLOGY/ONCOLOGY | 333 | 46,050 | $85,650 | $2 | premium | 72.2% | (260) 484-8830 |
| 47 | NOVACURE CONSULTANTS PC | ALEXANDRIA | VA | HEMATOLOGY/ONCOLOGY | 2 | 45,300 | $68,325 | $2 | premium | 9.3% | (703) 780-2216 |
| 48 | FAIRBANKS CANCER CARE PHYSICIANS PC | FAIRBANKS | AK | PHYSICIAN ASSISTANT | 5 | 43,350 | $260,100 | $6 | premium | 40.6% | (907) 452-4268 |
| 49 | DEAN HEALTH SYSTEMS INC | MADISON | WI | PHYSICIAN ASSISTANT | 1200 | 40,200 | $160,800 | $4 | premium | 39.3% | (608) 260-2900 |
| 50 | SAN JUAN ONCOLOGY ASSOCIATES PC | FARMINGTON | NM | HEMATOLOGY/ONCOLOGY | 3 | 39,450 | $41,585 | $1 | premium | 63.1% | (505) 564-6850 |
| 51 | GREATER BALTIMORE MEDICAL CENTER INC | BALTIMORE | MD | HOSPITALIST | 348 | 39,300 | $24,512 | $1 | premium | 9.2% | — |
| 52 | MARYLAND ONCOLOGY HEMATOLOGY PA | LAUREL | MD | HEMATOLOGY/ONCOLOGY | 99 | 37,200 | $223,200 | $6 | premium | 8.7% | (301) 982-9800 |
| 53 | MARY BIRD PERKINS CANCER CENTER | BATON ROUGE | LA | HEMATOLOGY/ONCOLOGY | 82 | 36,901 | $184,505 | $5 | premium | 66.3% | (225) 767-0847 |
| 54 | OCALA ONCOLOGY CENTER PL | OCALA | FL | NURSE PRACTITIONER | 23 | 36,600 | $219,600 | $6 | premium | 5.5% | (352) 732-4032 |
| 55 | CRYSTAL RUN HEALTHCARE PHYSICIANS LLP | MIDDLETOWN | NY | NURSE PRACTITIONER | 372 | 36,600 | $128,100 | $4 | premium | 15.7% | (845) 703-6999 |
| 56 | CANCER CARE ASSOCIATES OF YORK, INC. | YORK | PA | HEMATOLOGY/ONCOLOGY | 15 | 36,450 | $36,450 | $1 | premium | 8.2% | (717) 741-9229 |
| 57 | STEELHEAD SPECIALTY GROUP PC | ROSEBURG | OR | HEMATOLOGY/ONCOLOGY | 4 | 36,001 | $107,703 | $3 | premium | 23.1% | (541) 229-4070 |
| 58 | MICHAEL P SHERMAN MD PHD A MEDICAL CORPORATION | WALNUT CREEK | CA | HEMATOLOGY/ONCOLOGY | 13 | 36,000 | $180,000 | $5 | premium | 3.5% | (925) 939-9610 |
| 59 | CENTRAL ARKANSAS RADIATION THERAPY INSTITUTE INC | LITTLE ROCK | AR | HEMATOLOGY/ONCOLOGY | 90 | 36,000 | $216,000 | $6 | premium | 19.3% | — |
| 60 | CEDARS-SINAI MEDICAL CARE FOUNDATION | LOS ANGELES | CA | PHYSICIAN ASSISTANT | 1699 | 35,400 | $35,400 | $1 | premium | 3.5% | (310) 423-0674 |
| 61 | NEBRASKA HEMATOLOGY-ONCOLOGY PC | LINCOLN | NE | PHYSICIAN ASSISTANT | 19 | 34,200 | $29,783 | $1 | premium | 11.0% | (402) 484-4900 |
| 62 | SOUTHWEST CANCER CARE LLC | SIERRA VISTA | AZ | NURSE PRACTITIONER | 6 | 32,850 | $16,425 | $0 | premium | 5.5% | (520) 220-5020 |
| 63 | CANCER CARE CENTERS OF BREVARD INC | MELBOURNE | FL | NURSE PRACTITIONER | 17 | 31,950 | $191,700 | $6 | premium | 4.8% | (321) 434-9000 |
| 64 | WOODLANDS MEDICAL SPECIALISTS P A | PENSACOLA | FL | PHYSICIAN ASSISTANT | 51 | 31,650 | $189,900 | $6 | premium | 4.8% | (850) 696-4000 |
| 65 | SOUTH TEXAS ONCOLOGY AND HEMATOLOGY, PLLC | SAN ANTONIO | TX | HEMATOLOGY/ONCOLOGY | 39 | 31,350 | $21,945 | $1 | premium | 1.1% | (210) 593-5700 |
| 66 | UNIVERSITY OF TEXAS HEALTH SCIENCE CENTER AT SAN ANTONIO | SAN ANTONIO | TX | PHYSICIAN ASSISTANT | 1326 | 30,900 | $14,083 | $0 | premium | 1.1% | (210) 450-7044 |
| 67 | CHRIST HOSPITAL MEDICAL SPECIALISTS II, LLC | CINCINNATI | OH | HEMATOLOGY/ONCOLOGY | 32 | 30,600 | $30,600 | $1 | premium | 8.4% | (513) 321-4333 |
| 68 | SACRED HEART HEALTH SYSTEM INC | PENSACOLA | FL | NURSE PRACTITIONER | 371 | 30,300 | $181,800 | $6 | premium | 4.6% | (850) 416-2400 |
| 69 | MEDSTAR MEDICAL GROUP - SOUTHERN MARYLAND LLC | HOLLYWOOD | MD | INTERNAL MEDICINE | 236 | 30,000 | $30,000 | $1 | premium | 7.0% | — |
| 70 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 29,850 | $79,657 | $3 | premium | 2.9% | (650) 723-4000 |
| 71 | NORTHWEST CANCER SPECIALISTS PC | PORTLAND | OR | PHYSICIAN ASSISTANT | 68 | 29,700 | $178,200 | $6 | premium | 19.1% | (503) 280-1223 |
| 72 | CLEVELAND CLINIC | CLEVELAND | OH | PHYSICIAN ASSISTANT | 6828 | 28,500 | $219,081 | $8 | premium | 7.8% | — |
| 73 | ONCOLOGY OF NORTHSHORE CLINIC PLLC | ROLLING MEADOWS | IL | HEMATOLOGY/ONCOLOGY | 5 | 28,350 | $21,262 | $1 | premium | 3.6% | (847) 871-1800 |
| 74 | OKLAHOMA CANCER AND BLOOD SPECIALISTS LLC | CLINTON | OK | NURSE PRACTITIONER | 11 | 28,350 | $56,700 | $2 | premium | 34.8% | (405) 752-0871 |
| 75 | SOUTHEASTERN MEDICAL ONCOLOGY CENTER | GOLDSBORO | NC | HEMATOLOGY/ONCOLOGY | 11 | 27,750 | $95,182 | $3 | premium | 31.5% | (919) 580-0000 |
| 76 | BIRMINGHAM HEMATOLOGY ONCOLOGY ASSOC LLC | BIRMINGHAM | AL | MEDICAL ONCOLOGY | 31 | 27,450 | $137,250 | $5 | premium | 15.5% | (205) 592-5077 |
| 77 | COVENANT ONCOLOGY AND HEMATOLOGY LLC | FRANKFORT | KY | HEMATOLOGY/ONCOLOGY | 2 | 26,400 | $160,776 | $6 | premium | 51.5% | (502) 699-2285 |
| 78 | UNIVERSITY OF MARYLAND COMMUNITY MEDICAL GROUP INC | GLEN BURNIE | MD | NURSE PRACTITIONER | 458 | 24,750 | $24,750 | $1 | premium | 5.8% | (410) 761-1222 |
| 79 | POTOMAC ONCOLOGY AND HEMATOLOGY, LLC | ROCKVILLE | MD | NURSE PRACTITIONER | 3 | 24,750 | $100,732 | $4 | premium | 5.8% | (240) 618-0275 |
| 80 | PHYSICIANS CLINIC OF IOWA PC | CEDAR RAPIDS | IA | NURSE PRACTITIONER | 132 | 24,750 | $63,112 | $3 | premium | 16.1% | (319) 247-3010 |
| 81 | KATMAI ONCOLOGY GROUP LLC | ANCHORAGE | AK | HEMATOLOGY/ONCOLOGY | 11 | 24,150 | $160,253 | $7 | premium | 22.6% | (907) 562-0321 |
| 82 | FREDERICK HEALTH MEDICAL GROUP LLC | FREDERICK | MD | PHYSICIAN ASSISTANT | 202 | 23,700 | $5,606 | $0 | premium | 5.5% | (240) 215-6310 |
| 83 | INTERCOASTAL MEDICAL GROUP INC | SARASOTA | FL | DIAGNOSTIC RADIOLOGY | 187 | 22,800 | $22,800 | $1 | premium | 3.4% | (941) 366-1888 |
| 84 | REVERE HEALTH PC | PROVO | UT | PHYSICIAN ASSISTANT | 410 | 22,500 | $67,500 | $3 | premium | 100.0% | — |
| 85 | OKLAHOMA CANCER SPECIALISTS AND RESEARCH INSTITUTE, LLC | TULSA | OK | NURSE PRACTITIONER | 47 | 22,350 | $111,750 | $5 | premium | 27.4% | (918) 505-3200 |
| 86 | JOHNS HOPKINS UNIVERSITY | BALTIMORE | MD | NURSE PRACTITIONER | 2900 | 22,200 | $148,074 | $7 | premium | 5.2% | (410) 502-4340 |
| 87 | CHITRA VENKATRAMAN MD PA | GREENBELT | MD | HEMATOLOGY/ONCOLOGY | 3 | 21,000 | $20,850 | $1 | premium | 4.9% | (301) 345-1800 |
| 88 | CANCER CENTER OF SOUTH FLORIDA PLLC | PALM BEACH GARDENS | FL | PHYSICIAN ASSISTANT | 41 | 20,850 | $9,567 | $0 | premium | 3.1% | (561) 253-3980 |
| 89 | ONCOLOGY SPECIALTIES, P.C. | HUNTSVILLE | AL | NURSE PRACTITIONER | 93 | 20,850 | $125,100 | $6 | premium | 11.7% | (256) 705-4224 |
| 90 | EPIC CARE | PLEASANT HILL | CA | HEMATOLOGY/ONCOLOGY | 54 | 20,550 | $91,500 | $4 | premium | 2.0% | (925) 687-2570 |
| 91 | NORTHWEST MEDICAL SPECIALTIES PLLC | TACOMA | NV | HEMATOLOGY/ONCOLOGY | 39 | 19,800 | $4,950 | $0 | premium | 6.0% | (253) 428-8700 |
| 92 | ONCOLOGY SAN ANTONIO | SAN ANTONIO | TX | HEMATOLOGY/ONCOLOGY | 5 | 19,800 | $19,800 | $1 | premium | 0.7% | (210) 490-2707 |
| 93 | SHEBOYGAN PHYSICIANS GROUP S.C. | SHEBOYGAN | WI | NURSE PRACTITIONER | 15 | 19,200 | $146,304 | $8 | premium | 18.8% | (920) 452-6000 |
| 94 | ONCOLOGY CONSULTANTS, P.A. | HOUSTON | TX | MEDICAL ONCOLOGY | 34 | 19,050 | $46,539 | $2 | premium | 0.7% | (281) 481-6688 |
| 95 | PARK NICOLLET CLINIC | ST LOUIS PARK | MN | PHYSICIAN ASSISTANT | 1754 | 19,050 | $76,200 | $4 | premium | 7.4% | (952) 993-3123 |
| 96 | AVERA MCKENNAN | SIOUX FALLS | SD | NURSE PRACTITIONER | 964 | 19,050 | $27,740 | $1 | premium | 70.9% | (605) 322-5180 |
| 97 | HEMATOLOGY AND ONCOLOGY ASSOCIATES OF NORTHERN CALIFORNIA | FOLSOM | CA | HEMATOLOGY/ONCOLOGY | 2 | 18,900 | $116,325 | $6 | premium | 1.8% | (916) 250-0377 |
| 98 | ALASKA ONCOLOGY AND HEMATOLOGY LLC | ANCHORAGE | AK | PHYSICIAN ASSISTANT | 6 | 18,900 | $50,085 | $3 | premium | 17.7% | (907) 279-3155 |
| 99 | HIGHLAND CLINIC, A PROF MED CORP | SHREVEPORT | LA | PHYSICIAN ASSISTANT | 58 | 18,750 | $56,250 | $3 | premium | 33.7% | — |
| 100 | VIRGINIA ONCOLOGY ASSOCIATES | NORFOLK | NC | PHYSICIAN ASSISTANT | 123 | 18,750 | $112,500 | $6 | premium | 21.3% | — |
Showing the top 100 of 176 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 →