50323 — Preparation of donor kidney for transplantation
4,711 observed fee-for-service (49%) · ~4,882 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 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 | 50323 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 281 | $325,050 | $1,157 | premium | 87.0% | (800) 603-0558 |
| 2 | CEDARS-SINAI MEDICAL CENTER | WEST HOLLYWOOD | CA | NURSE PRACTITIONER | 802 | 137 | $446,498 | $3,259 | premium | 19.1% | (310) 423-3277 |
| 3 | VANDERBILT UNIVERSITY MEDICAL CENTER | NASHVILLE | TN | NURSE PRACTITIONER | 3394 | 116 | $143,354 | $1,236 | premium | 40.6% | (615) 322-5000 |
| 4 | THE EMORY CLINIC INC | ATLANTA | GA | NURSE PRACTITIONER | 3484 | 115 | $86,854 | $755 | premium | 49.8% | (404) 778-7525 |
| 5 | WASHINGTON UNIVERSITY | SAINT LOUIS | MO | NURSE PRACTITIONER | 3070 | 114 | $155,250 | $1,362 | premium | 58.2% | (314) 747-3000 |
| 6 | HACKENSACK MERIDIAN HEALTH MEDICAL GROUP - SPECIALTY CARE PC | NEPTUNE | NJ | NURSE PRACTITIONER | 1878 | 111 | $130,738 | $1,178 | premium | 49.3% | (732) 362-3663 |
| 7 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 110 | $56,536 | $514 | premium | 15.3% | (415) 600-1020 |
| 8 | CANYON SURGICAL ASSOCIATES, LLC | MURRAY | UT | GENERAL SURGERY | 5 | 94 | $133,085 | $1,416 | premium | 79.0% | (801) 507-9600 |
| 9 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 79 | $73,700 | $933 | premium | 21.9% | — |
| 10 | REGENTS OF THE UNIV OF CA | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 1608 | 74 | $88,800 | $1,200 | premium | 10.3% | (877) 827-7463 |
| 11 | THE MEDICAL COLLEGE OF WISCONSIN INC | MILWAUKEE | WI | DIAGNOSTIC RADIOLOGY | 2137 | 74 | $97,570 | $1,319 | premium | 30.7% | (414) 955-4263 |
| 12 | UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL CENTER AT DALLAS | DALLAS | TX | PHYSICIAN ASSISTANT | 3200 | 73 | $84,495 | $1,157 | premium | 17.8% | (214) 633-5555 |
| 13 | BARNABAS HEALTH MEDICAL GROUP PC | LIVINGSTON | NJ | NURSE PRACTITIONER | 990 | 72 | $187,992 | $2,611 | premium | 32.0% | — |
| 14 | TAMPA GENERAL MEDICAL GROUP INC | TAMPA | FL | PHYSICIAN ASSISTANT | 352 | 72 | $156,945 | $2,180 | premium | 23.8% | (813) 844-7585 |
| 15 | UNIVERSITY OF TOLEDO PHYSICIANS LLC | TOLEDO | OH | PHYSICIAN ASSISTANT | 405 | 69 | $181,845 | $2,635 | premium | 37.3% | (419) 383-5550 |
| 16 | UNIVERSITY OF WISCONSIN MEDICAL FOUNDATION INC | MADISON | WI | PHYSICIAN ASSISTANT | 2523 | 69 | $620,172 | $8,988 | premium | 28.6% | (608) 287-2050 |
| 17 | REGENTS OF THE UNIVERSITY OF MICHIGAN | ANN ARBOR | MI | INTERNAL MEDICINE | 3330 | 69 | $209,938 | $3,043 | premium | 61.1% | (734) 763-5459 |
| 18 | SAINT THOMAS MEDICAL PARTNERS | NASHVILLE | TN | NURSE PRACTITIONER | 591 | 66 | $28,314 | $429 | premium | 23.1% | (615) 269-4545 |
| 19 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | LOS ANGELES | CA | UROLOGY | 48 | 65 | $71,110 | $1,094 | premium | 9.0% | (310) 794-8492 |
| 20 | MCV ASSOCIATED PHYSICIANS | RICHMOND | VA | NURSE PRACTITIONER | 1791 | 61 | $91,073 | $1,493 | premium | 47.7% | (804) 828-9000 |
| 21 | THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS | CHICAGO | IL | NURSE PRACTITIONER | 1170 | 60 | $88,940 | $1,482 | premium | 16.6% | — |
| 22 | THE ASSOCIATION OF UNIVERSITY PHYSICIANS | SEATTLE | WA | PHYSICIAN ASSISTANT | 3612 | 60 | $41,413 | $690 | premium | 24.7% | (206) 364-0500 |
| 23 | WEILL MEDICAL COLLEGE OF CORNELL | NEW YORK | NY | INTERNAL MEDICINE | 2053 | 59 | $371,943 | $6,304 | premium | 18.8% | (212) 746-5454 |
| 24 | METHODIST PHYSICIAN PRACTICES PLLC | SAN ANTONIO | TX | INTERVENTIONAL CARDIOLOGY | 169 | 57 | $38,721 | $679 | premium | 13.9% | (210) 575-8289 |
| 25 | UNIVERSITY OF ALABAMA HEALTH SERVICES FOUNDATION, PC | BIRMINGHAM | AL | NURSE PRACTITIONER | 2788 | 57 | $26,969 | $473 | premium | 100.0% | (205) 934-3460 |
| 26 | PIEDMONT PROVIDERS LLC | ATLANTA | GA | PHYSICIAN ASSISTANT | 509 | 51 | $32,232 | $632 | premium | 22.1% | (404) 367-3210 |
| 27 | LOYOLA UNIVERSITY MEDICAL CENTER | MAYWOOD | IL | NURSE PRACTITIONER | 933 | 51 | $141,427 | $2,773 | premium | 14.1% | (708) 216-8372 |
| 28 | SWEDISH HEALTH SERVICES | SEATTLE | WA | PHYSICIAN ASSISTANT | 1033 | 51 | $28,811 | $565 | premium | 21.0% | — |
| 29 | MEDICAL CITY TRANSPLANT, PLLC | DALLAS | TX | GENERAL SURGERY | 16 | 50 | $43,430 | $869 | premium | 12.2% | (469) 608-4980 |
| 30 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 49 | $58,570 | $1,195 | premium | 57.6% | (507) 284-2511 |
| 31 | UNIVERSITY OF MIAMI | MIAMI | FL | NURSE PRACTITIONER | 2331 | 49 | $68,940 | $1,407 | premium | 16.2% | (305) 689-5437 |
| 32 | UNIVERSITY OF VIRGINIA PHYSICIANS GROUP | CHARLOTTESVILLE | VA | NURSE PRACTITIONER | 1704 | 47 | $23,218 | $494 | premium | 36.7% | (434) 924-5959 |
| 33 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 46 | $149,284 | $3,245 | premium | 15.2% | (904) 953-2000 |
| 34 | BARNABAS HEALTH MEDICAL GROUP PC | LIVINGSTON | NY | NURSE PRACTITIONER | 990 | 45 | $117,495 | $2,611 | premium | 14.4% | — |
| 35 | UNIVERSITY OF MARYLAND SURGICAL ASSOCIATES PA | BALTIMORE | MD | GENERAL SURGERY | 101 | 43 | $74,693 | $1,737 | premium | 22.5% | (410) 328-5191 |
| 36 | HEALTHTEXAS PROVIDER NETWORK | DALLAS | TX | PHYSICIAN ASSISTANT | 2482 | 43 | $45,150 | $1,050 | premium | 10.5% | — |
| 37 | ZUHDI TRANSPLANT PHYSICIANS | OKLAHOMA CITY | OK | NURSE PRACTITIONER | 51 | 42 | $11,298 | $269 | premium | 60.9% | (405) 947-5557 |
| 38 | JOHNS HOPKINS UNIVERSITY | BALTIMORE | MD | NURSE PRACTITIONER | 2900 | 41 | $134,050 | $3,270 | premium | 21.5% | (410) 502-4340 |
| 39 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 41 | $136,325 | $3,325 | premium | 13.1% | (212) 263-9700 |
| 40 | ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND | NEW ORLEANS | LA | INTERNAL MEDICINE | 412 | 41 | $81,085 | $1,978 | premium | 71.9% | — |
| 41 | UNIVERSITY MEDICAL ASSOCIATES OF THE MEDICAL UNIVERSITY OF SOUTH CAROL | CHARLESTON | SC | PHYSICIAN ASSISTANT | 1692 | 40 | $150,117 | $3,753 | premium | 40.4% | (843) 792-1414 |
| 42 | UNMC PHYSICIANS | OMAHA | NE | PHYSICIAN ASSISTANT | 1514 | 39 | $168,000 | $4,308 | premium | 100.0% | (402) 559-4000 |
| 43 | UT METHODIST PHYSICIANS LLC | MEMPHIS | TN | NURSE PRACTITIONER | 125 | 38 | $18,574 | $489 | premium | 13.3% | — |
| 44 | UNIVERSITY SURGEONS OF ORANGE A MEDICAL GROUP | ORANGE | CA | GENERAL SURGERY | 120 | 36 | $21,939 | $609 | premium | 5.0% | (714) 634-5549 |
| 45 | KANSAS UNIVERSITY PHYSICIANS INC | KANSAS CITY | CA | NURSE PRACTITIONER | 1815 | 35 | $20,146 | $576 | premium | 4.9% | (913) 588-1227 |
| 46 | UMASS MEMORIAL MEDICAL GROUP INC | WORCESTER | MA | PHYSICIAN ASSISTANT | 2483 | 34 | $186,912 | $5,497 | premium | 39.5% | (508) 334-1000 |
| 47 | HACKENSACK MERIDIAN HEALTH MEDICAL GROUP - SPECIALTY CARE PC | NEPTUNE | NC | NURSE PRACTITIONER | 1878 | 33 | $21,222 | $643 | premium | 28.2% | (732) 362-3663 |
| 48 | KANSAS UNIVERSITY PHYSICIANS INC | KANSAS CITY | MO | NURSE PRACTITIONER | 1815 | 33 | $18,986 | $575 | premium | 16.8% | (913) 588-1227 |
| 49 | OSU SURGERY, LLC | COLUMBUS | OH | PHYSICIAN ASSISTANT | 204 | 33 | $123,585 | $3,745 | premium | 17.8% | (614) 293-2101 |
| 50 | VIRGINIA MASON MEDICAL CENTER | SEATTLE | WA | PHYSICIAN ASSISTANT | 879 | 32 | $7,823 | $244 | premium | 13.2% | (206) 223-6600 |
| 51 | RUSH UNIVERSITY MEDICAL GROUP | CHICAGO | IL | PHYSICIAN ASSISTANT | 1496 | 31 | $31,000 | $1,000 | premium | 8.6% | (312) 563-2875 |
| 52 | TEXAS HEALTH PHYSICIANS GROUP | FORT WORTH | TX | PHYSICIAN ASSISTANT | 1350 | 31 | $34,813 | $1,123 | premium | 7.6% | (817) 281-2977 |
| 53 | UNIVERSITY SURGICAL ASSOCIATES LLP | SYRACUSE | NY | GENERAL SURGERY | 50 | 30 | $22,693 | $756 | premium | 9.6% | — |
| 54 | REGENTS OF THE UNIVERSITY OF CALIFORNIA | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 2057 | 30 | $93,712 | $3,124 | premium | 4.2% | (800) 926-8273 |
| 55 | MEDHEALTH | DALLAS | TX | PHYSICIAN ASSISTANT | 430 | 29 | $41,557 | $1,433 | premium | 7.1% | (214) 599-8624 |
| 56 | VIRTUA MEDICAL GROUP, PA | VOORHEES | NJ | PHYSICIAN ASSISTANT | 1662 | 29 | $34,452 | $1,188 | premium | 12.9% | (856) 247-7260 |
| 57 | PROVIDENCE HEALTH AND SERVICES WASHINGTON | SPOKANE | WA | PHYSICIAN ASSISTANT | 771 | 29 | $22,389 | $772 | premium | 11.9% | — |
| 58 | CLEVELAND CLINIC FLORIDA | WESTON | IL | NURSE PRACTITIONER | 720 | 26 | $33,630 | $1,293 | premium | 7.2% | (954) 659-5000 |
| 59 | UNIVERSITY OF CINCINNATI PHYSICIANS COMPANY LLC | CINCINNATI | OH | NURSE PRACTITIONER | 1504 | 26 | $103,246 | $3,971 | premium | 14.1% | (513) 584-1000 |
| 60 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 25 | $27,900 | $1,116 | premium | 3.5% | (650) 723-4000 |
| 61 | EINSTEIN PRACTICE PLAN INC | PHILADELPHIA | PA | DIAGNOSTIC RADIOLOGY | 740 | 25 | $211,875 | $8,475 | premium | 12.7% | (215) 456-8242 |
| 62 | UNIVERSITY OF UTAH ADULT SERVICES | SALT LAKE CITY | UT | PHYSICIAN ASSISTANT | 1783 | 25 | $46,962 | $1,878 | premium | 21.0% | (801) 581-2121 |
| 63 | USC CARE MEDICAL GROUP INC | LOS ANGELES | CA | DIAGNOSTIC RADIOLOGY | 1374 | 25 | $16,750 | $670 | premium | 3.5% | (800) 872-2273 |
| 64 | MCV ASSOCIATED PHYSICIANS | RICHMOND | PA | NURSE PRACTITIONER | 1791 | 24 | $35,832 | $1,493 | premium | 12.2% | (804) 828-9000 |
| 65 | LEHIGH VALLEY PHYSICIAN GROUP | ALLENTOWN | PA | PHYSICIAN ASSISTANT | 2389 | 24 | $178,800 | $7,450 | premium | 12.2% | — |
| 66 | RMC TRANSPLANT PHYSICIANS LLC | SPRINGFIELD | MO | GENERAL SURGERY | 5 | 22 | $19,633 | $892 | premium | 11.2% | (816) 822-8257 |
| 67 | UNM MEDICAL GROUP INC | ALBUQUERQUE | NM | FAMILY PRACTICE | 1089 | 21 | $38,465 | $1,832 | premium | 100.0% | (505) 272-2111 |
| 68 | ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI | NEW YORK | NY | PHYSICIAN ASSISTANT | 2818 | 21 | $31,500 | $1,500 | premium | 6.7% | (212) 241-4812 |
| 69 | VIDANT MEDICAL GROUP LLC | KENANSVILLE | NC | PHYSICIAN ASSISTANT | 956 | 21 | $12,957 | $617 | premium | 17.9% | (910) 296-0941 |
| 70 | YALE UNIVERSITY | NEW HAVEN | CA | PHYSICIAN ASSISTANT | 2649 | 20 | $23,000 | $1,150 | premium | 2.8% | (203) 688-4242 |
| 71 | SENTARA MEDICAL GROUP | NORFOLK | VA | PHYSICIAN ASSISTANT | 1404 | 20 | $6,300 | $315 | premium | 15.6% | — |
| 72 | FLORIDA CLINICAL PRACTICE ASSOCIATION INC | GAINESVILLE | FL | NURSE PRACTITIONER | 1912 | 20 | $63,100 | $3,155 | premium | 6.6% | (352) 265-8990 |
| 73 | WELLSTAR MEDICAL GROUP LLC | MARIETTA | GA | NURSE PRACTITIONER | 3060 | 19 | $19,000 | $1,000 | premium | 8.2% | (770) 422-2004 |
| 74 | UNIVERSITY MEDICAL ASSOCIATES OF THE MEDICAL UNIVERSITY OF SOUTH CAROL | CHARLESTON | MD | PHYSICIAN ASSISTANT | 1692 | 19 | $71,850 | $3,782 | premium | 9.9% | (843) 792-1414 |
| 75 | UNIVERSITY OF UTAH ADULT SERVICES | SALT LAKE CITY | DC | PHYSICIAN ASSISTANT | 1783 | 19 | $35,691 | $1,878 | premium | 29.2% | (801) 581-2121 |
| 76 | LEGACY GOOD SAMARITAN HOSPITAL AND MEDICAL CENTER | PORTLAND | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 194 | 19 | $66,947 | $3,524 | premium | 2.6% | (503) 413-7022 |
| 77 | HACKENSACK MERIDIAN HEALTH MEDICAL GROUP - SPECIALTY CARE PC | NEPTUNE | MD | NURSE PRACTITIONER | 1878 | 18 | $31,086 | $1,727 | premium | 9.4% | (732) 362-3663 |
| 78 | STONY BROOK UROLOGY UNIVERSITY FACULTY PRACTICE CORPORATION | EAST SETAUKET | NY | UROLOGY | 37 | 18 | $94,680 | $5,260 | premium | 5.8% | (631) 444-6270 |
| 79 | ST VINCENT PHYSICIAN SERVICES HOSPITAL AND HEALTH CARE CENTER | INDIANAPOLIS | IN | INTERNAL MEDICINE | 285 | 17 | $30,685 | $1,805 | premium | 13.7% | (317) 338-7760 |
| 80 | UNIVERSITY PROFESSIONAL SERVICES | PORTLAND | OR | PHYSICIAN ASSISTANT | 1717 | 17 | $11,666 | $686 | premium | 100.0% | (503) 494-8311 |
| 81 | STATE OF MISSISSIPPI - UNIVERSITY OF MISSISSIPPI MEDICAL CENTER | JACKSON | MI | NURSE PRACTITIONER | 951 | 17 | $79,050 | $4,650 | premium | 15.0% | (601) 815-4775 |
| 82 | AVERA MCKENNAN | SIOUX FALLS | SD | NURSE PRACTITIONER | 964 | 17 | $1,731 | $102 | premium | 100.0% | (605) 322-5180 |
| 83 | JEFFERSON UNIVERSITY PHYSICIANS | PHILADELPHIA | PA | DIAGNOSTIC RADIOLOGY | 1570 | 16 | $135,600 | $8,475 | premium | 8.1% | — |
| 84 | KENTUCKY MEDICAL SERVICES FOUNDATION, INC | LEXINGTON | KY | DIAGNOSTIC RADIOLOGY | 989 | 16 | $9,872 | $617 | premium | 100.0% | (859) 257-1412 |
| 85 | WAKE FOREST UNIVERSITY HEALTH SCIENCES | WINSTON SALEM | AZ | PHYSICIAN ASSISTANT | 2609 | 16 | $3,068 | $192 | premium | 5.0% | (336) 713-9800 |
| 86 | THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS | CHICAGO | MD | NURSE PRACTITIONER | 1170 | 16 | $23,944 | $1,496 | premium | 8.4% | — |
| 87 | ERIE COUNTY MEDICAL CENTER CORPORATION | BUFFALO | NY | PHYSICIAN ASSISTANT | 324 | 16 | $15,325 | $958 | premium | 5.1% | (716) 898-3000 |
| 88 | HEALTHTEXAS PROVIDER NETWORK | DALLAS | WI | PHYSICIAN ASSISTANT | 2482 | 16 | $16,800 | $1,050 | premium | 6.6% | — |
| 89 | CHILDREN'S SURGICAL ASSOCIATES, CORPORATION | COLUMBUS | OH | GENERAL SURGERY | 38 | 16 | $6,565 | $410 | premium | 8.6% | (614) 722-2000 |
| 90 | VIDANT MEDICAL GROUP LLC | KENANSVILLE | NY | PHYSICIAN ASSISTANT | 956 | 16 | $9,872 | $617 | premium | 5.1% | (910) 296-0941 |
| 91 | CHRISTIANA CARE HEALTH SERVICES INC | NEWARK | MI | PHYSICIAN ASSISTANT | 1537 | 15 | $26,449 | $1,763 | premium | 13.3% | — |
| 92 | UNIVERSITY OF ARKANSAS FOR MEDICAL SCIENCES | LITTLE ROCK | OH | NURSE PRACTITIONER | 1241 | 15 | $30,369 | $2,025 | premium | 8.1% | (501) 686-8000 |
| 93 | THE IOWA CLINIC PC | WEST DES MOINES | IA | PHYSICIAN ASSISTANT | 302 | 15 | $26,499 | $1,767 | premium | 21.1% | (515) 343-1000 |
| 94 | NORTH SHORE-LIJ MEDICAL PC | MANHASSET | MD | PHYSICIAN ASSISTANT | 6294 | 15 | $12,690 | $846 | premium | 7.9% | — |
| 95 | LEHIGH VALLEY PHYSICIAN GROUP | ALLENTOWN | TX | PHYSICIAN ASSISTANT | 2389 | 15 | $25,947 | $1,730 | premium | 3.7% | — |
| 96 | UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL | CHAPEL HILL | NC | NURSE PRACTITIONER | 2120 | 15 | $14,540 | $969 | premium | 12.8% | (984) 215-5556 |
| 97 | TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK | NEW YORK | NY | NURSE PRACTITIONER | 2273 | 14 | $88,480 | $6,320 | premium | 4.5% | (212) 305-8559 |
| 98 | SANFORD MEDICAL CENTER FARGO | FARGO | ND | NURSE PRACTITIONER | 1198 | 14 | $63,294 | $4,521 | premium | 51.9% | (701) 234-2000 |
| 99 | BAYLOR COLLEGE OF MEDICINE | HOUSTON | TX | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 1222 | 14 | $9,800 | $700 | premium | 3.4% | — |
| 100 | WAKE FOREST UNIVERSITY HEALTH SCIENCES | WINSTON SALEM | NC | PHYSICIAN ASSISTANT | 2609 | 14 | $7,280 | $520 | premium | 12.0% | (336) 713-9800 |
Showing the top 100 of 114 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 →