72141 — Mri scan of upper spinal canal without contrast
191,415 observed fee-for-service (50%) · ~194,441 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; 3 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 | 72141 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 3,856 | $3,952,686 | $1,025 | premium | 9.6% | (631) 225-7200 |
| 2 | ADVANCED RADIOLOGY P A | BALTIMORE | MD | DIAGNOSTIC RADIOLOGY | 161 | 3,609 | $3,854,427 | $1,068 | premium | 22.5% | (888) 972-9700 |
| 3 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 3,306 | $5,904,951 | $1,786 | premium | 8.3% | (212) 263-9700 |
| 4 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 2,211 | $3,068,027 | $1,388 | premium | 3.6% | (916) 681-8852 |
| 5 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 2,166 | $904,336 | $418 | premium | 4.9% | (817) 321-0470 |
| 6 | HOUSTON RADIOLOGY ASSOCIATED | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 103 | 1,990 | $1,134,694 | $570 | premium | 4.5% | (281) 206-9020 |
| 7 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 1,653 | $1,660,678 | $1,005 | premium | 9.4% | (617) 724-0287 |
| 8 | SDMI, LLC | LAS VEGAS | NV | DIAGNOSTIC RADIOLOGY | 36 | 1,532 | $1,807,144 | $1,180 | premium | 28.8% | (702) 732-6000 |
| 9 | SMI IMAGING LLC | PHOENIX | AZ | DIAGNOSTIC RADIOLOGY | 364 | 1,413 | $1,752,257 | $1,240 | premium | 10.9% | (480) 753-6161 |
| 10 | CHARLOTTE RADIOLOGY PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 218 | 1,353 | $666,930 | $493 | premium | 7.3% | (704) 362-1945 |
| 11 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 1,335 | $2,490,149 | $1,865 | premium | 2.2% | (415) 600-1020 |
| 12 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 1,323 | $1,076,448 | $814 | premium | 2.1% | (916) 983-7476 |
| 13 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 1,307 | $795,351 | $609 | premium | 6.2% | — |
| 14 | MEDICAL SCANNING CONSULTANTS PA | ST LOUIS PARK | MN | DIAGNOSTIC RADIOLOGY | 81 | 1,301 | $2,460,372 | $1,891 | premium | 11.3% | (952) 541-1840 |
| 15 | MORI BEAN AND BROOKS INC | ORANGE PARK | FL | DIAGNOSTIC RADIOLOGY | 947 | 1,239 | $948,495 | $766 | premium | 2.7% | (904) 399-5550 |
| 16 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 1,189 | $310,388 | $261 | premium | 10.8% | — |
| 17 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 62 | 1,158 | $1,278,172 | $1,104 | premium | 7.2% | (888) 601-0943 |
| 18 | UNIVERSITY OF ARKANSAS FOR MEDICAL SCIENCES | LITTLE ROCK | AR | NURSE PRACTITIONER | 1241 | 1,139 | $441,932 | $388 | premium | 16.9% | (501) 686-8000 |
| 19 | RADIOLOGY LTD LLC | TUCSON | AZ | DIAGNOSTIC RADIOLOGY | 102 | 1,123 | $1,474,518 | $1,313 | premium | 8.7% | (520) 290-4842 |
| 20 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 1,105 | $1,123,487 | $1,017 | premium | 2.5% | (239) 936-2316 |
| 21 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 1,087 | $937,191 | $862 | premium | 1.8% | (858) 455-9100 |
| 22 | UMASS MEMORIAL MEDICAL GROUP INC | WORCESTER | MA | PHYSICIAN ASSISTANT | 2483 | 1,033 | $442,218 | $428 | premium | 5.9% | (508) 334-1000 |
| 23 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 1,025 | $335,672 | $327 | premium | 8.7% | (616) 363-7272 |
| 24 | RHODE ISLAND MEDICAL IMAGING INC | EAST PROVIDENCE | RI | DIAGNOSTIC RADIOLOGY | 109 | 984 | $833,941 | $848 | premium | 67.1% | (401) 626-3900 |
| 25 | COMMONWEALTH RADIOLOGY PC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 49 | 963 | $197,415 | $205 | premium | 5.7% | (804) 288-8327 |
| 26 | BEAUMONT MEDICAL GROUP HOSPITAL BASED SERVICES | TROY | MI | DIAGNOSTIC RADIOLOGY | 583 | 951 | $407,084 | $428 | premium | 8.0% | (248) 964-1187 |
| 27 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 927 | $2,191,747 | $2,364 | premium | 8.1% | (507) 284-2511 |
| 28 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 893 | $392,663 | $440 | premium | 2.0% | (254) 724-2663 |
| 29 | NORTHSIDE RADIOLOGY ASSOCIATES LLC | ATLANTA | GA | DIAGNOSTIC RADIOLOGY | 370 | 880 | $834,240 | $948 | premium | 5.0% | (404) 851-6577 |
| 30 | BEVERLY RADIOLOGY MEDICAL GROUP III | GARDEN GROVE | CA | DIAGNOSTIC RADIOLOGY | 328 | 875 | $973,241 | $1,112 | premium | 1.4% | — |
| 31 | REGENTS OF THE UNIVERSITY OF CALIFORNIA | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 2057 | 874 | $851,263 | $974 | premium | 1.4% | (800) 926-8273 |
| 32 | MASS GENERAL BRIGHAM COMMUNITY PHYSICIANS INC | MEDFORD | MA | DIAGNOSTIC RADIOLOGY | 424 | 869 | $288,667 | $332 | premium | 4.9% | (781) 395-4909 |
| 33 | ROPER RADIOLOGISTS PA | CHARLESTON | SC | DIAGNOSTIC RADIOLOGY | 40 | 866 | $614,033 | $709 | premium | 7.8% | (843) 724-2161 |
| 34 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 858 | $194,766 | $227 | premium | 5.0% | (757) 466-6870 |
| 35 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 858 | $226,774 | $264 | premium | 4.1% | — |
| 36 | RADIOLOGY ASSOCIATES OF RICHMOND INC | RICHMOND | VA | DIAGNOSTIC RADIOLOGY | 70 | 840 | $413,057 | $492 | premium | 4.9% | (804) 272-8806 |
| 37 | ARKANSAS HEALTH GROUP | LITTLE ROCK | AR | CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) | 666 | 824 | $234,308 | $284 | premium | 12.2% | (501) 202-2093 |
| 38 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 819 | $313,808 | $383 | premium | 4.6% | (617) 732-5500 |
| 39 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 779 | $698,599 | $897 | premium | 1.3% | (650) 723-4000 |
| 40 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 755 | $987,593 | $1,308 | premium | 5.8% | (800) 603-0558 |
| 41 | IHC HEALTH SERVICES INC | MURRAY | UT | PHYSICIAN ASSISTANT | 3944 | 750 | $311,032 | $415 | premium | 20.1% | (801) 261-8346 |
| 42 | LAKE MEDICAL IMAGING AND BREAST CENTER AT THE VILLAGES LLC | LEESBURG | FL | DIAGNOSTIC RADIOLOGY | 22 | 729 | $424,278 | $582 | premium | 1.6% | (352) 787-5858 |
| 43 | MEDICAL SCANNING CONSULTANTS PA | ST LOUIS PARK | IN | DIAGNOSTIC RADIOLOGY | 81 | 686 | $1,413,786 | $2,061 | premium | 8.7% | (952) 541-1840 |
| 44 | TRISTATE IMG (IMAGING MEDICAL GROUP) INC | CINCINNATI | OH | DIAGNOSTIC RADIOLOGY | 44 | 674 | $181,812 | $270 | premium | 3.6% | (513) 865-1331 |
| 45 | CALIFORNIA MANAGED IMAGING MEDICAL GROUP INC | SANTA BARBARA | CA | DIAGNOSTIC RADIOLOGY | 64 | 663 | $1,119,365 | $1,688 | premium | 1.1% | (800) 841-4236 |
| 46 | ILLINOIS BONE AND JOINT INSTITUTE, LLC | BANNOCKBURN | IL | ORTHOPEDIC SURGERY | 595 | 657 | $992,260 | $1,510 | premium | 3.1% | — |
| 47 | BASHA DIAGNOSTICS P C | ROYAL OAK | MI | DIAGNOSTIC RADIOLOGY | 25 | 655 | $187,670 | $287 | premium | 5.5% | (248) 288-1600 |
| 48 | SMI IMAGING LLC | PHOENIX | TX | DIAGNOSTIC RADIOLOGY | 364 | 655 | $318,304 | $486 | premium | 1.5% | (480) 753-6161 |
| 49 | CENTRAL ILLINOIS RADIOLOGICAL ASSOCIATES LTD | PEORIA | IL | DIAGNOSTIC RADIOLOGY | 196 | 653 | $338,593 | $519 | premium | 3.1% | (309) 655-2000 |
| 50 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 640 | $1,982,332 | $3,097 | premium | 1.4% | (904) 953-2000 |
| 51 | HAMPTON ROADS RADIOLOGY ASSOCIATES PC | VIRGINIA BEACH | VA | DIAGNOSTIC RADIOLOGY | 37 | 622 | $172,916 | $278 | premium | 3.7% | (757) 916-9630 |
| 52 | LAKELAND RADIOLOGISTS P A | FLOWOOD | MS | DIAGNOSTIC RADIOLOGY | 29 | 622 | $225,786 | $363 | premium | 10.6% | (601) 936-2390 |
| 53 | NEW YORK UNIVERSITY | NEW YORK | PA | DIAGNOSTIC RADIOLOGY | 5704 | 620 | $1,131,573 | $1,825 | premium | 3.4% | (212) 263-9700 |
| 54 | WEST COUNTY RADIOLOGICAL GROUP INC | SAINT LOUIS | MO | DIAGNOSTIC RADIOLOGY | 104 | 618 | $210,253 | $340 | premium | 5.3% | (314) 941-5600 |
| 55 | STONY BROOK RADIOLOGY, UNIVERSITY FACULTY PRACTICE CORPORATION | STONY BROOK | NY | DIAGNOSTIC RADIOLOGY | 59 | 599 | $469,652 | $784 | premium | 1.5% | (631) 638-2121 |
| 56 | COLUMBUS RADIOLOGY CORP | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 288 | 589 | $558,372 | $948 | premium | 3.2% | (614) 228-7231 |
| 57 | SINGLETON ASSOCIATES PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 769 | 588 | $557,424 | $948 | premium | 1.3% | (855) 504-4544 |
| 58 | MECKLENBURG RADIOLOGY ASSOCIATES PA | CHARLOTTE | NC | DIAGNOSTIC RADIOLOGY | 94 | 580 | $205,900 | $355 | premium | 3.1% | (704) 332-1291 |
| 59 | TOLEDO RADIOLOGICAL ASSOCIATES INC | COLDWATER | OH | DIAGNOSTIC RADIOLOGY | 51 | 571 | $124,118 | $217 | premium | 3.1% | (517) 279-5400 |
| 60 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | OH | NURSE PRACTITIONER | 2232 | 562 | $119,144 | $212 | premium | 3.0% | — |
| 61 | EVANSVILLE RADIOLOGY PC | EVANSVILLE | IN | DIAGNOSTIC RADIOLOGY | 29 | 561 | $297,891 | $531 | premium | 7.1% | (812) 422-3254 |
| 62 | EASTERN RADIOLOGISTS INC | GREENVILLE | NC | DIAGNOSTIC RADIOLOGY | 93 | 553 | $281,054 | $508 | premium | 3.0% | (252) 752-5000 |
| 63 | UC REGENTS | ORANGE | CA | DIAGNOSTIC RADIOLOGY | 99 | 551 | $545,362 | $990 | premium | 0.9% | (714) 456-7004 |
| 64 | TRIAD RADIOLOGY ASSOCIATES PLLC | WINSTON SALEM | NC | DIAGNOSTIC RADIOLOGY | 78 | 543 | $130,320 | $240 | premium | 2.9% | (336) 718-7800 |
| 65 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 531 | $520,508 | $980 | premium | 1.3% | (914) 241-1050 |
| 66 | PENINSULA RADIOLOGICAL ASSOCIATES LIMITED | NEWPORT NEWS | VA | DIAGNOSTIC RADIOLOGY | 65 | 531 | $168,327 | $317 | premium | 3.1% | (757) 594-3900 |
| 67 | NEW YORK UNIVERSITY | NEW YORK | WA | DIAGNOSTIC RADIOLOGY | 5704 | 530 | $987,509 | $1,863 | premium | 5.6% | (212) 263-9700 |
| 68 | DUKE HEALTH INTEGRATED PRACTICE INC | DURHAM | NC | PHYSICIAN ASSISTANT | 3051 | 527 | $231,294 | $439 | premium | 2.8% | (919) 684-8111 |
| 69 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 243 | 524 | $184,955 | $353 | premium | 2.8% | (614) 566-5600 |
| 70 | PROGRESSIVE PHYSICIAN ASSOC INC | PHILLIPSBURG | PA | DIAGNOSTIC RADIOLOGY | 160 | 518 | $176,810 | $341 | premium | 2.9% | (908) 859-6700 |
| 71 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | DC | DIAGNOSTIC RADIOLOGY | 62 | 516 | $579,749 | $1,124 | premium | 16.0% | (888) 601-0943 |
| 72 | DRS HARRIS BIRKHILL WANG SONGE AND ASSOC PC | DEARBORN | MI | DIAGNOSTIC RADIOLOGY | 62 | 504 | $171,444 | $340 | premium | 4.3% | (313) 593-7301 |
| 73 | NEW YORK UNIVERSITY | NEW YORK | CO | DIAGNOSTIC RADIOLOGY | 5704 | 501 | $925,092 | $1,846 | premium | 4.1% | (212) 263-9700 |
| 74 | RADIOLOGY ASSOCIATES OF ABILENE PA | ABILENE | TX | DIAGNOSTIC RADIOLOGY | 25 | 499 | $139,254 | $279 | premium | 1.1% | (325) 670-2000 |
| 75 | IHS RADIOLOGY MEDICAL GROUP INC | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 68 | 494 | $963,430 | $1,950 | premium | 0.8% | (619) 295-9729 |
| 76 | UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL CENTER AT DALLAS | DALLAS | TX | PHYSICIAN ASSISTANT | 3200 | 493 | $163,098 | $331 | premium | 1.1% | (214) 633-5555 |
| 77 | WINCHESTER RADIOLOGISTS PC | WINCHESTER | VA | DIAGNOSTIC RADIOLOGY | 79 | 487 | $184,086 | $378 | premium | 2.9% | (540) 686-1600 |
| 78 | VISTA RADIOLOGY, PC | KNOXVILLE | TN | DIAGNOSTIC RADIOLOGY | 68 | 486 | $173,621 | $357 | premium | 3.5% | (865) 546-9484 |
| 79 | SPECTRUM HEALTHCARE PARTNERS PA | PORTLAND | ME | DIAGNOSTIC RADIOLOGY | 281 | 473 | $157,596 | $333 | premium | 25.0% | (207) 828-2160 |
| 80 | WELLSPAN MEDICAL GROUP | YORK | PA | PHYSICIAN ASSISTANT | 2312 | 464 | $88,308 | $190 | premium | 2.6% | — |
| 81 | CLEVELAND CLINIC FLORIDA | WESTON | FL | NURSE PRACTITIONER | 720 | 463 | $447,348 | $966 | premium | 1.0% | (954) 659-5000 |
| 82 | REGIONAL MEDICAL IMAGING PC | FLINT | MI | DIAGNOSTIC RADIOLOGY | 22 | 462 | $230,653 | $499 | premium | 3.9% | (810) 732-8870 |
| 83 | RADIOLOGY CONSULTANTS PC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 46 | 459 | $108,324 | $236 | premium | 13.2% | (402) 717-4760 |
| 84 | STATE UNIVERSITY OF IOWA | IOWA CITY | IA | PHYSICIAN ASSISTANT | 1902 | 449 | $213,334 | $475 | premium | 11.4% | (319) 678-8201 |
| 85 | SOUTHERN DELAWARE IMAGING ASSOC | LEWES | DE | DIAGNOSTIC RADIOLOGY | 40 | 442 | $101,660 | $230 | premium | 13.5% | (302) 645-3636 |
| 86 | EAST RIVER MEDICAL IMAGING PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 10 | 437 | $830,300 | $1,900 | premium | 1.1% | (212) 288-7615 |
| 87 | RADIOLOGY PHYSICIANS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 61 | 426 | $145,336 | $341 | premium | 2.3% | (937) 208-8000 |
| 88 | KETTERING NETWORK RADIOLOGISTS INC | DAYTON | OH | DIAGNOSTIC RADIOLOGY | 74 | 425 | $134,375 | $316 | premium | 2.3% | (937) 558-3800 |
| 89 | NORTHWEST RADIOLOGY ASSOCIATES SC | ARLINGTON HEIGHTS | IL | DIAGNOSTIC RADIOLOGY | 21 | 422 | $102,124 | $242 | premium | 2.0% | (847) 618-1000 |
| 90 | FREEMAN-OAK HILL HEALTH SYSTEM | JOPLIN | MO | NURSE PRACTITIONER | 382 | 421 | $136,020 | $323 | premium | 3.6% | (417) 347-8200 |
| 91 | ORTHOARKANSAS PA | LITTLE ROCK | AR | PHYSICAL THERAPIST IN PRIVATE PRACTICE | 145 | 414 | $220,680 | $533 | premium | 6.1% | (501) 500-3500 |
| 92 | THE ASSOCIATION OF UNIVERSITY PHYSICIANS | SEATTLE | WA | PHYSICIAN ASSISTANT | 3612 | 411 | $89,347 | $217 | premium | 4.3% | (206) 364-0500 |
| 93 | FPA HOSPITAL BASED | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 427 | 410 | $580,968 | $1,417 | premium | 1.0% | (212) 252-6004 |
| 94 | REVERE HEALTH PC | PROVO | UT | PHYSICIAN ASSISTANT | 410 | 407 | $376,584 | $925 | premium | 10.9% | — |
| 95 | BIRMINGHAM PHYSICIANS RADIOLOGY PLLC | BIRMINGHAM | AL | NEUROLOGY | 3 | 399 | $865,193 | $2,168 | premium | 4.0% | (205) 823-3366 |
| 96 | DELAWARE RADIOLOGY ASSOCIATES PA | NEWARK | DE | DIAGNOSTIC RADIOLOGY | 56 | 399 | $401,997 | $1,008 | premium | 12.2% | (302) 737-5990 |
| 97 | SOUTHERN NEW HAMPSHIRE RADIOLOGY CONSULTANTS PC | BEDFORD | NH | DIAGNOSTIC RADIOLOGY | 42 | 398 | $115,420 | $290 | premium | 14.2% | (603) 627-1661 |
| 98 | SPRINGFIELD CLINIC, LLP | SPRINGFIELD | IL | NURSE PRACTITIONER | 686 | 394 | $635,065 | $1,612 | premium | 1.9% | (217) 544-6464 |
| 99 | NEURO IR OF EAST TEXAS | TYLER | TX | DIAGNOSTIC RADIOLOGY | 3 | 392 | $152,096 | $388 | premium | 0.9% | (903) 705-0072 |
| 100 | INNOVATIVE RADIOLOGY PA | HOUSTON | TX | DIAGNOSTIC RADIOLOGY | 31 | 385 | $486,731 | $1,264 | premium | 0.9% | (713) 797-1919 |
Showing the top 100 of 1,093 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 →