3,664,399 observed fee-for-service (50%) · ~3,707,104 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 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 | 99490 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 | NORTH SHORE HEMATOLOGY ONCOLOGY ASSOCIATES PC | SMITHTOWN | NY | NURSE PRACTITIONER | 462 | 50,171 | $7,525,496 | $150 | premium | 9.2% | (631) 751-3000 |
| 2 | INFINITE MEDICAL PC | LAKELAND | NY | NURSE PRACTITIONER | 87 | 46,883 | $9,295,200 | $198 | premium | 8.6% | (212) 734-6621 |
| 3 | CHESAPEAKE UROLOGY ASSOCIATES LLC | BALTIMORE | MD | UROLOGY | 160 | 44,119 | $7,423,117 | $168 | premium | 35.2% | (410) 825-5454 |
| 4 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 42,515 | $4,332,146 | $102 | premium | 26.0% | — |
| 5 | IOWA PHYSICIANS CLINIC MEDICAL FOUNDATION | BETTENDORF | IA | NURSE PRACTITIONER | 1202 | 41,914 | $6,092,678 | $145 | premium | 44.1% | — |
| 6 | PRESCOTT HEALTHCARE SOLUTIONS LLC | PRESCOTT VALLEY | AZ | PHYSICIAN ASSISTANT | 197 | 29,748 | $2,988,970 | $100 | premium | 13.1% | (928) 458-7583 |
| 7 | VIRGINIA CARDIOVASCULAR SPECIALISTS | RICHMOND | VA | INTERVENTIONAL CARDIOLOGY | 56 | 29,449 | $2,503,165 | $85 | premium | 11.9% | (804) 282-2685 |
| 8 | GENESIS HEALTHCARE PARTNERS PC | TORRANCE | CA | GASTROENTEROLOGY | 211 | 25,706 | $7,711,845 | $300 | premium | 3.8% | (310) 534-8400 |
| 9 | KINGS COUNTY HOUSE CALLS NP IN FAMILY HEALTH PLLC | BROOKLYN | NY | NURSE PRACTITIONER | 29 | 21,659 | $2,666,580 | $123 | premium | 4.0% | (646) 535-1545 |
| 10 | NEVADA HEART AND VASCULAR CENTER RESH LLP | LAS VEGAS | NV | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 42 | 20,992 | $2,573,693 | $123 | premium | 29.6% | (702) 240-6482 |
| 11 | FLORIDA KIDNEY PHYSICIANS LLC | TAMPA | FL | NEPHROLOGY | 165 | 20,108 | $2,476,538 | $123 | premium | 3.4% | (813) 910-8708 |
| 12 | IMPERIAL VALLEY FAMILY CARE MEDICAL GROUP A P C | EL CENTRO | CA | FAMILY PRACTICE | 23 | 19,443 | $1,720,711 | $89 | premium | 2.9% | (760) 353-6363 |
| 13 | PHYSICIANS CLINIC INC | OMAHA | NE | PHYSICIAN ASSISTANT | 561 | 17,822 | $2,022,377 | $113 | premium | 27.7% | (402) 354-8163 |
| 14 | HAYS MEDICAL CENTER INC | HAYS | KS | PHYSICIAN ASSISTANT | 182 | 17,644 | $2,117,280 | $120 | premium | 25.3% | (785) 623-5774 |
| 15 | ORTHOLONESTAR PLLC | DALLAS | TX | PHYSICIAN ASSISTANT | 407 | 16,803 | $2,167,587 | $129 | premium | 2.7% | (214) 220-2468 |
| 16 | WEST TEXAS HEART AND VASCULAR PLLC | LUBBOCK | TX | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 4 | 15,616 | $968,192 | $62 | premium | 2.5% | (806) 701-4263 |
| 17 | SOUTHWEST MEDICAL ASSOCIATES, LLC | ALBUQUERQUE | NM | PHYSICIAN ASSISTANT | 328 | 15,402 | $1,386,242 | $90 | premium | 31.5% | (505) 727-7090 |
| 18 | ADVANCED UROLOGY INSTITUTE LLC | INVERNESS | FL | UROLOGY | 147 | 14,932 | $2,313,664 | $155 | premium | 2.5% | (352) 726-9707 |
| 19 | UROLOGIC SPECIALISTS OF OKLAHOMA INC | TULSA | OK | UROLOGY | 44 | 14,683 | $954,395 | $65 | premium | 18.1% | (918) 749-8765 |
| 20 | PULMONARY AND INTERNAL MEDICINE ASSOCIATES INC | STUART | FL | NURSE PRACTITIONER | 5 | 14,242 | $996,940 | $70 | premium | 2.4% | (772) 283-4428 |
| 21 | TYLER INTERNAL MEDICINE ASSOCIATES, P.A | TYLER | TX | NURSE PRACTITIONER | 14 | 14,124 | $1,102,876 | $78 | premium | 2.3% | (903) 533-0644 |
| 22 | CABRILLO CARDIOLOGY MEDICAL GROUP INC | OXNARD | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 9 | 14,006 | $2,100,900 | $150 | premium | 2.1% | (805) 351-8212 |
| 23 | COTTON-O'NEIL CLINIC REVOCABLE TRUST | TOPEKA | KS | NURSE PRACTITIONER | 649 | 13,990 | $1,054,007 | $75 | premium | 20.1% | (785) 354-9591 |
| 24 | UROLOGY CLINICS OF NORTH TEXAS, PLLC | DALLAS | TX | UROLOGY | 72 | 13,555 | $1,664,551 | $123 | premium | 2.2% | (214) 691-9377 |
| 25 | FAMILY PRACTICE CENTER PC | MIDDLEBURG | PA | PHYSICAL THERAPIST IN PRIVATE PRACTICE | 345 | 13,375 | $1,003,125 | $75 | premium | 7.5% | (570) 837-5889 |
| 26 | INFINITE MEDICAL PC | LAKELAND | FL | NURSE PRACTITIONER | 87 | 13,293 | $2,651,798 | $199 | premium | 2.2% | (212) 734-6621 |
| 27 | PHYSICIAN HOUSECALLS LLC | LAKEWOOD | CO | NURSE PRACTITIONER | 119 | 13,138 | $1,653,174 | $126 | premium | 18.3% | (720) 923-1250 |
| 28 | JOSEPH A CAPLAN MD PC | SUN CITY WEST | AZ | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 31 | 12,902 | $1,983,591 | $154 | premium | 5.7% | (623) 876-8816 |
| 29 | SHIFA PSC | CHAVIES | KY | FAMILY PRACTICE | 2 | 12,794 | $20,950 | $2 | premium | 8.9% | — |
| 30 | RENAL ASSOCIATES, P.A. | SAN ANTONIO | TX | NEPHROLOGY | 39 | 12,747 | $1,274,700 | $100 | premium | 2.0% | (210) 403-7978 |
| 31 | SELECT REHABILITATION, LLC | GLENVIEW | VA | FAMILY PRACTICE | 2028 | 12,746 | $1,341,395 | $105 | premium | 5.1% | — |
| 32 | CENTER FOR ADVANCED CARDIAC AND VASCULAR INTERVENTIONS | TARZANA | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 11 | 12,638 | $2,125,025 | $168 | premium | 1.9% | (818) 905-5904 |
| 33 | UROLOGY AUSTIN PLLC | AUSTIN | TX | PHYSICIAN ASSISTANT | 57 | 12,099 | $1,152,701 | $95 | premium | 1.9% | (512) 788-9688 |
| 34 | THE CENTERS FOR ADVANCED UROLOGY LLP | KING OF PRUSSIA | PA | UROLOGY | 145 | 11,637 | $1,494,489 | $128 | premium | 6.5% | (610) 579-3577 |
| 35 | WOODLANDS MEDICAL SPECIALISTS P A | PENSACOLA | FL | PHYSICIAN ASSISTANT | 51 | 11,632 | $1,093,408 | $94 | premium | 2.0% | (850) 696-4000 |
| 36 | WHITE-WILSON MEDICAL CENTER PA | FORT WALTON BEACH | FL | NURSE PRACTITIONER | 45 | 11,210 | $941,640 | $84 | premium | 1.9% | (850) 863-8150 |
| 37 | FIRST UROLOGY PSC | LOUISVILLE | IN | UROLOGY | 55 | 11,150 | $1,338,000 | $120 | premium | 9.4% | (812) 282-3899 |
| 38 | INDIAN RIVER PRIMARY CARE | VERO BCH | FL | INTERNAL MEDICINE | 10 | 10,919 | $1,444,256 | $132 | premium | 1.8% | (772) 794-2222 |
| 39 | THINK AKSARBEN LLC | OMAHA | NE | FAMILY PRACTICE | 73 | 10,818 | $781,211 | $72 | premium | 16.8% | (402) 991-7000 |
| 40 | HATTIESBURG CLINIC PA | HATTIESBURG | MS | FAMILY PRACTICE | 530 | 10,541 | $1,190,644 | $113 | premium | 9.4% | (601) 264-6000 |
| 41 | MEDICAL ASSOCIATE OF WALL STREET, P.C | NEW YORK | NY | NURSE PRACTITIONER | 11 | 10,384 | $1,033,831 | $100 | premium | 1.9% | (212) 233-3040 |
| 42 | SOUTHCOAST PHYSICIANS GROUP INC | FALL RIVER | MA | NURSE PRACTITIONER | 868 | 10,356 | $2,018,589 | $195 | premium | 16.7% | (508) 973-5919 |
| 43 | SC HOUSE CALLS INC | WEST COLUMBIA | SC | NURSE PRACTITIONER | 435 | 10,228 | $726,235 | $71 | premium | 6.2% | (800) 491-0909 |
| 44 | ETMC PHYSICIAN GROUP, INC. | TYLER | TX | NURSE PRACTITIONER | 373 | 10,200 | $1,195,675 | $117 | premium | 1.6% | (903) 590-5611 |
| 45 | SOUTHERN UROLOGY LLC | OPELOUSAS | LA | UROLOGY | 28 | 10,177 | $1,831,860 | $180 | premium | 9.5% | (337) 594-4025 |
| 46 | HOUSE CALL MEDICAL SERVICES OF NEW YORK, PLLC | BRONX | NY | NURSE PRACTITIONER | 163 | 10,164 | $957,521 | $94 | premium | 1.9% | (718) 618-0401 |
| 47 | CARDIOVASCULAR ASSOCIATES OF THE DELAWARE VALLEY,P A | HADDON HEIGHTS | NJ | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 94 | 9,971 | $1,196,520 | $120 | premium | 5.1% | (856) 546-3003 |
| 48 | HORIZON INTERNAL MEDICINE PLLC | HIGH POINT | NC | NURSE PRACTITIONER | 15 | 9,719 | $534,545 | $55 | premium | 4.8% | (336) 610-1300 |
| 49 | UROLOGY OF VIRGINIA, PLLC | VIRGINIA BEACH | VA | PHYSICIAN ASSISTANT | 75 | 9,643 | $838,643 | $87 | premium | 3.9% | (757) 452-3599 |
| 50 | OCHSNER CLINIC LLC | NEW ORLEANS | LA | NURSE PRACTITIONER | 2839 | 9,547 | $864,848 | $91 | premium | 8.9% | (504) 842-3000 |
| 51 | YIUM, SHENOUDA AND MILLER PTRSHP | CHATTANOOGA | TN | NEPHROLOGY | 49 | 9,535 | $3,278,705 | $344 | premium | 6.9% | (423) 698-0927 |
| 52 | STOCKTON CARDIOLOGY MEDICAL GROUP COMPLETE HEART CARE INC | STOCKTON | CA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 14 | 9,492 | $958,870 | $101 | premium | 1.4% | — |
| 53 | CARDIOVASCULAR ASSOCIATES INC | KISSIMMEE | FL | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 18 | 9,277 | $1,131,796 | $122 | premium | 1.6% | 4078460626239 |
| 54 | AMARILLO MEDICAL SPECIALISTS,LLP | AMARILLO | TX | NURSE PRACTITIONER | 37 | 9,229 | $599,459 | $65 | premium | 1.5% | (806) 358-8331 |
| 55 | CAROLINA DIGESTIVE HEALTH ASSOCIATES PA | CHARLOTTE | NC | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 49 | 9,216 | $1,441,700 | $156 | premium | 4.5% | (704) 372-7974 |
| 56 | UROLOGY CENTERS OF ALABAMA, PC | HOMEWOOD | AL | UROLOGY | 61 | 9,198 | $919,800 | $100 | premium | 6.0% | (205) 930-0920 |
| 57 | HOLSTON MEDICAL GROUP PC | BRISTOL | TN | NURSE PRACTITIONER | 244 | 8,978 | $691,923 | $77 | premium | 6.5% | (423) 844-7000 |
| 58 | ARKANSAS CENTRAL PRIMARY CARE PLLC | CABOT | AR | FAMILY PRACTICE | 21 | 8,751 | $647,574 | $74 | premium | 13.6% | (501) 843-4555 |
| 59 | CENTRAL COAST FAMILY CARE MEDICAL ASSOCIATES INC | SANTA MARIA | CA | FAMILY PRACTICE | 9 | 8,719 | $1,177,065 | $135 | premium | 1.3% | (805) 938-7444 |
| 60 | LAGRANGE INTERNAL MEDICINE, PC | LAGRANGE | GA | INTERNAL MEDICINE | 8 | 8,459 | $603,787 | $71 | premium | 3.2% | (706) 882-9341 |
| 61 | HOUSTON METRO UROLOGY | HOUSTON | TX | UROLOGY | 31 | 8,383 | $536,728 | $64 | premium | 1.3% | (713) 634-4441 |
| 62 | UROPARTNERS LLC | WESTCHESTER | IL | UROLOGY | 130 | 8,210 | $1,055,231 | $129 | premium | 4.5% | (708) 486-0076 |
| 63 | CONRAD PEARSON CLINIC PC | SOUTHAVEN | TN | UROLOGY | 21 | 8,122 | $1,218,300 | $150 | premium | 5.9% | (662) 349-1964 |
| 64 | FAMILY CHOICE ACO INC | WESTMINSTER | CA | FAMILY PRACTICE | 62 | 8,078 | $859,528 | $106 | premium | 1.2% | (714) 898-0765 |
| 65 | MEDCORPS ASTHMA AND PULMONARY SPECIALISTS LLC | LINWOOD | NJ | NURSE PRACTITIONER | 18 | 7,971 | $623,332 | $78 | premium | 4.1% | (609) 788-8593 |
| 66 | HOUSECALLS MEDICINE NY PC | NEW YORK | NY | NURSE PRACTITIONER | 22 | 7,752 | $1,653,036 | $213 | premium | 1.4% | (718) 360-9370 |
| 67 | ADVANCED MEDICAL CARE PLLC | FOREST HILLS | NY | NEUROLOGY | 8 | 7,729 | $564,032 | $73 | premium | 1.4% | (718) 261-8881 |
| 68 | TAMPA GENERAL MEDICAL GROUP INC | TAMPA | FL | PHYSICIAN ASSISTANT | 352 | 7,597 | $789,295 | $104 | premium | 1.3% | (813) 844-7585 |
| 69 | HEALTH SERVICE SYSTEMS, INC | NEW LENOX | IL | FAMILY PRACTICE | 60 | 7,556 | $835,285 | $111 | premium | 4.2% | (815) 727-4292 |
| 70 | TENNESSEE UROLOGY ASSOCIATES, PLLC | KNOXVILLE | TN | UROLOGY | 27 | 7,549 | $1,126,368 | $149 | premium | 5.5% | (865) 691-3061 |
| 71 | BAYLOR ST. LUKE'S MEDICAL GROUP | THE WOODLANDS | TX | PHYSICIAN ASSISTANT | 177 | 7,471 | $814,339 | $109 | premium | 1.2% | (281) 444-3278 |
| 72 | Y J LEE MD CORP | LOS ANGELES | CA | INTERNAL MEDICINE | 2 | 7,457 | $1,267,690 | $170 | premium | 1.1% | (213) 383-9388 |
| 73 | MEMORIAL HOSPITAL AT GULFPORT | GULFPORT | MS | NURSE PRACTITIONER | 462 | 7,414 | $815,540 | $110 | premium | 6.6% | — |
| 74 | IMC-DIAGNOSTIC AND MEDICAL CLINIC LLC | MOBILE | AL | INTERNAL MEDICINE | 167 | 7,379 | $479,765 | $65 | premium | 4.8% | — |
| 75 | PREMIER GASTROENTEROLOGY ASSOCIATES PLLC | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 28 | 7,271 | $712,558 | $98 | premium | 11.3% | (501) 747-2828 |
| 76 | BERKELEY FAMILY PRACTICE LLC | MONCKS CORNER | SC | FAMILY PRACTICE | 5 | 7,270 | $508,900 | $70 | premium | 4.4% | 84376188002262 |
| 77 | SOUTHWEST KIDNEY INSTITUTE PLC | PHOENIX | AZ | NEPHROLOGY | 97 | 7,214 | $886,344 | $123 | premium | 3.2% | (623) 247-9235 |
| 78 | MDWATCH MEDICAL CORP | DETROIT | CA | NURSE PRACTITIONER | 8 | 7,138 | $699,650 | $98 | premium | 1.1% | (888) 202-9960 |
| 79 | UROLOGY ASSOCIATES OF MOBILE, P.A. | MOBILE | AL | UROLOGY | 60 | 7,066 | $686,430 | $97 | premium | 4.6% | (251) 433-1895 |
| 80 | D.H. MEDICAL, LLC | ORMOND BEACH | FL | NURSE PRACTITIONER | 21 | 6,934 | $558,286 | $81 | premium | 1.2% | (888) 808-0488 |
| 81 | TEXARKANA GASTROENTEROLOGY CONSULTANTS, PA | TEXARKANA | TX | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 18 | 6,910 | $840,256 | $122 | premium | 1.1% | 90379280302080 |
| 82 | DIGESTIVE CARE OF EVANSVILLE PC | NEWBURGH | IN | NURSE PRACTITIONER | 27 | 6,859 | $1,676,463 | $244 | premium | 5.8% | (812) 477-6103 |
| 83 | VALLEY MEDICAL GROUP PC | GREENFIELD | MA | PHYSICIAN ASSISTANT | 108 | 6,716 | $503,700 | $75 | premium | 10.8% | (413) 774-6301 |
| 84 | UROLOGY OF ST LOUIS INC | SAINT LOUIS | MO | UROLOGY | 112 | 6,700 | $850,900 | $127 | premium | 5.2% | (314) 567-6071 |
| 85 | GASTROENTEROLOGY ASSOCIATES OF NEW JERSEY LLC | TOMS RIVER | NJ | GASTROENTEROLOGY | 82 | 6,611 | $1,000,950 | $151 | premium | 3.4% | (732) 281-1590 |
| 86 | RNA OF ROCKFORD, PLLC | ROCKFORD | IL | NEPHROLOGY | 18 | 6,589 | $797,002 | $121 | premium | 3.6% | (815) 227-8300 |
| 87 | THE PHYSICIANS GROUP, LLC | OKLAHOMA CITY | OK | NURSE PRACTITIONER | 103 | 6,577 | $717,270 | $109 | premium | 8.1% | (405) 692-9300 |
| 88 | BIRMINGHAM GASTROENTEROLOGY ASSOCIATES PC | BIRMINGHAM | AL | PHYSICIAN ASSISTANT | 52 | 6,537 | $326,850 | $50 | premium | 4.2% | (205) 271-8000 |
| 89 | PENINSULA NEPHROLOGY ASSOCIATES PA | SALISBURY | MD | NEPHROLOGY | 6 | 6,500 | $740,750 | $114 | premium | 5.2% | 4105464427128 |
| 90 | GUT PC | DOTHAN | AL | GASTROENTEROLOGY | 52 | 6,444 | $483,300 | $75 | premium | 4.2% | (334) 836-1212 |
| 91 | INFINITE MEDICAL PC | LAKELAND | RI | NURSE PRACTITIONER | 87 | 6,372 | $1,274,400 | $200 | premium | 59.8% | (212) 734-6621 |
| 92 | PULMONARY ASSOCIATES OF RICHMOND INC | MIDLOTHIAN | VA | PULMONARY DISEASE | 49 | 6,346 | $710,752 | $112 | premium | 2.6% | (804) 639-9910 |
| 93 | FAMILY MEDICAL CLINIC OF NORTH MS INC | SOUTHAVEN | MS | NURSE PRACTITIONER | 13 | 6,335 | $633,500 | $100 | premium | 5.6% | (662) 890-5555 |
| 94 | CARIENT HEART AND VASCULAR, LLC | MANASSAS | VA | CARDIOVASCULAR DISEASE (CARDIOLOGY) | 26 | 6,283 | $785,191 | $125 | premium | 2.5% | 57158117712611 |
| 95 | ENNOBLE HC NJ PC | HACKENSACK | NJ | NURSE PRACTITIONER | 114 | 6,254 | $1,333,461 | $213 | premium | 3.2% | (973) 241-1356 |
| 96 | TOLEDO CLINIC INCORPORATED | TOLEDO | OH | NURSE PRACTITIONER | 217 | 6,240 | $775,992 | $124 | premium | 6.7% | (419) 874-3246 |
| 97 | PRIMARY CARE PARTNERS LLC | MORRISTOWN | NJ | INTERNAL MEDICINE | 74 | 6,231 | $883,794 | $142 | premium | 3.2% | (973) 971-5000 |
| 98 | OCOTILLO INTERNAL MEDICINE ASSOCIATES | CHANDLER | AZ | PHYSICIAN ASSISTANT | 8 | 6,227 | $311,301 | $50 | premium | 2.7% | (480) 895-5870 |
| 99 | GASTROENTEROLOGY ASSOCIATES | KINGSPORT | TN | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 27 | 6,205 | $489,450 | $79 | premium | 4.5% | (423) 246-6777 |
| 100 | VISAVIS HEALTH CARE MEDICAL GROUP OF NJ LLC | TRENTON | DE | NURSE PRACTITIONER | 16 | 6,198 | $663,116 | $107 | premium | 10.9% | (718) 534-0689 |
Showing the top 100 of 3,483 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 →