70549 — Mri scan of blood vessels of neck before and after contrast
5,105 observed fee-for-service (52%) · ~4,802 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 | 70549 svcs | Submitted charges | Avg charge | Medicare $ locked column | Share* | Phone |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NEW YORK UNIVERSITY | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 5704 | 289 | $472,331 | $1,634 | premium | 27.3% | (212) 263-9700 |
| 2 | HAMPTON ROADS RADIOLOGY ASSOCIATES PC | VIRGINIA BEACH | VA | DIAGNOSTIC RADIOLOGY | 37 | 280 | $84,280 | $301 | premium | 29.0% | (757) 916-9630 |
| 3 | NEURO INTERVENTIONAL AND DIAGNOSTIC ASSOCIATES, PC | LEES SUMMIT | MO | DIAGNOSTIC RADIOLOGY | 5 | 194 | $70,422 | $363 | premium | 50.7% | (816) 347-5000 |
| 4 | STATE UNIVERSITY OF IOWA | IOWA CITY | IA | PHYSICIAN ASSISTANT | 1902 | 182 | $82,575 | $454 | premium | 69.5% | (319) 678-8201 |
| 5 | ZWANGER AND PESIRI RADIOLOGY GROUP LLP | LINDENHURST | NY | DIAGNOSTIC RADIOLOGY | 91 | 179 | $351,351 | $1,963 | premium | 16.9% | (631) 225-7200 |
| 6 | MAYO CLINIC ARIZONA | PHOENIX | AZ | PHYSICIAN ASSISTANT | 1635 | 172 | $157,999 | $919 | premium | 32.0% | (800) 603-0558 |
| 7 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | IL | NURSE PRACTITIONER | 4339 | 148 | $68,524 | $463 | premium | 19.8% | — |
| 8 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | VA | DIAGNOSTIC RADIOLOGY | 123 | 146 | $40,150 | $275 | premium | 15.1% | (757) 466-6870 |
| 9 | STANFORD HEALTH CARE | STANFORD | CA | DIAGNOSTIC RADIOLOGY | 3039 | 117 | $130,351 | $1,114 | premium | 6.8% | (650) 723-4000 |
| 10 | MEDICAL IMAGING OF LEHIGH VALLEY PC | ALLENTOWN | PA | DIAGNOSTIC RADIOLOGY | 119 | 110 | $42,350 | $385 | premium | 18.1% | (610) 770-1606 |
| 11 | MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC | BOSTON | MA | DIAGNOSTIC RADIOLOGY | 3532 | 85 | $245,886 | $2,893 | premium | 8.9% | (617) 724-0287 |
| 12 | THE EMORY CLINIC INC | ATLANTA | GA | NURSE PRACTITIONER | 3484 | 84 | $30,744 | $366 | premium | 20.0% | (404) 778-7525 |
| 13 | RADIOLOGY ASSOCIATES OF RIDGEWOOD P A | WALDWICK | NJ | DIAGNOSTIC RADIOLOGY | 20 | 84 | $54,805 | $652 | premium | 13.0% | (201) 445-8822 |
| 14 | MASS GENERAL BRIGHAM COMMUNITY PHYSICIANS INC | MEDFORD | MA | DIAGNOSTIC RADIOLOGY | 424 | 80 | $27,997 | $350 | premium | 8.3% | (781) 395-4909 |
| 15 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | FL | NURSE PRACTITIONER | 1587 | 78 | $384,852 | $4,934 | premium | 8.9% | (904) 953-2000 |
| 16 | ENDEAVOR HEALTH MEDICAL GROUP | EVANSTON | IL | NURSE PRACTITIONER | 3380 | 76 | $22,344 | $294 | premium | 10.2% | — |
| 17 | BIRMINGHAM PHYSICIANS RADIOLOGY PLLC | BIRMINGHAM | AL | NEUROLOGY | 3 | 72 | $172,800 | $2,400 | premium | 40.7% | (205) 823-3366 |
| 18 | BEVERLY RADIOLOGY MEDICAL GROUP III | GARDEN GROVE | CA | DIAGNOSTIC RADIOLOGY | 328 | 64 | $117,810 | $1,841 | premium | 3.7% | — |
| 19 | NEW YORK UNIVERSITY | NEW YORK | PA | DIAGNOSTIC RADIOLOGY | 5704 | 63 | $109,818 | $1,743 | premium | 10.3% | (212) 263-9700 |
| 20 | RADIOLOGY SUBSPECIALISTS OF NORTHERN ILLINOIS LLC | GENEVA | IL | DIAGNOSTIC RADIOLOGY | 32 | 60 | $35,564 | $593 | premium | 8.0% | (630) 208-4412 |
| 21 | HAMPTON ROADS RADIOLOGY ASSOCIATES PC | VIRGINIA BEACH | GA | DIAGNOSTIC RADIOLOGY | 37 | 59 | $17,759 | $301 | premium | 14.1% | (757) 916-9630 |
| 22 | NAPERVILLE RADIOLOGISTS SC | NAPERVILLE | IL | DIAGNOSTIC RADIOLOGY | 16 | 59 | $60,741 | $1,030 | premium | 7.9% | (630) 484-5493 |
| 23 | NEW YORK UNIVERSITY | NEW YORK | CO | DIAGNOSTIC RADIOLOGY | 5704 | 59 | $98,654 | $1,672 | premium | 46.5% | (212) 263-9700 |
| 24 | KANSAS UNIVERSITY PHYSICIANS INC | KANSAS CITY | KS | NURSE PRACTITIONER | 1815 | 57 | $12,109 | $212 | premium | 46.3% | (913) 588-1227 |
| 25 | NORTHSIDE RADIOLOGY ASSOCIATES LLC | ATLANTA | GA | DIAGNOSTIC RADIOLOGY | 370 | 54 | $56,808 | $1,052 | premium | 12.9% | (404) 851-6577 |
| 26 | COLUMBUS RADIOLOGY CORP | COLUMBUS | NC | DIAGNOSTIC RADIOLOGY | 288 | 53 | $56,600 | $1,068 | premium | 15.4% | (614) 228-7231 |
| 27 | NEW YORK UNIVERSITY | NEW YORK | MA | DIAGNOSTIC RADIOLOGY | 5704 | 51 | $78,483 | $1,539 | premium | 5.3% | (212) 263-9700 |
| 28 | THE CURATORS OF THE UNIVERSITY OF MISSOURI | COLUMBIA | MO | PHYSICIAN ASSISTANT | 1116 | 50 | $18,225 | $364 | premium | 13.1% | (573) 882-2667 |
| 29 | REGENTS OF THE UNIVERSITY OF CALIFORNIA | SAN DIEGO | CA | DIAGNOSTIC RADIOLOGY | 2057 | 50 | $81,432 | $1,629 | premium | 2.9% | (800) 926-8273 |
| 30 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | MD | DIAGNOSTIC RADIOLOGY | 62 | 49 | $91,630 | $1,870 | premium | 13.7% | (888) 601-0943 |
| 31 | RADIOLOGY REGIONAL CENTER P A | FORT MYERS | FL | DIAGNOSTIC RADIOLOGY | 52 | 47 | $111,126 | $2,364 | premium | 5.4% | (239) 936-2316 |
| 32 | SOUTH SHORE RADIOLOGICAL ASSOCIATES INC | SOUTH WEYMOUTH | MA | DIAGNOSTIC RADIOLOGY | 36 | 44 | $13,068 | $297 | premium | 4.6% | (781) 340-8000 |
| 33 | THE EMORY CLINIC INC | ATLANTA | IL | NURSE PRACTITIONER | 3484 | 43 | $15,912 | $370 | premium | 5.7% | (404) 778-7525 |
| 34 | CALIFORNIA MANAGED IMAGING MEDICAL GROUP INC | SANTA BARBARA | CA | DIAGNOSTIC RADIOLOGY | 64 | 41 | $107,696 | $2,627 | premium | 2.4% | (800) 841-4236 |
| 35 | UNIVERSITY HOSPITALS MEDICAL GROUP INC | CLEVELAND | WI | NURSE PRACTITIONER | 2232 | 41 | $12,290 | $300 | premium | 26.3% | — |
| 36 | OPTUM MEDICAL CARE PC | MOUNT KISCO | NY | INTERNAL MEDICINE | 1040 | 40 | $24,260 | $606 | premium | 3.8% | (914) 241-1050 |
| 37 | MEDICAL IMAGING OF LEHIGH VALLEY PC | ALLENTOWN | NJ | DIAGNOSTIC RADIOLOGY | 119 | 38 | $14,630 | $385 | premium | 5.9% | (610) 770-1606 |
| 38 | UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL | CHAPEL HILL | NC | NURSE PRACTITIONER | 2120 | 37 | $10,804 | $292 | premium | 10.7% | (984) 215-5556 |
| 39 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 36 | $15,237 | $423 | premium | 2.1% | (916) 983-7476 |
| 40 | AMERICAN RADIOLOGY CONSULTANTS PLLC | DALLAS | TX | DIAGNOSTIC RADIOLOGY | 121 | 35 | $11,270 | $322 | premium | 5.0% | (214) 820-3216 |
| 41 | HARVARD MEDICAL FACULTY PHYS AT BETH ISRAEL DEACONESS MED CTR INC | BOSTON | MA | INTERNAL MEDICINE | 1689 | 34 | $9,758 | $287 | premium | 3.5% | (781) 983-9088 |
| 42 | PALM DESERT RADIOLOGY MEDICAL GROUP INC | RANCHO MIRAGE | CA | DIAGNOSTIC RADIOLOGY | 125 | 33 | $42,966 | $1,302 | premium | 1.9% | (760) 773-1251 |
| 43 | RADIOLOGY IMAGING ASSOCIATES | PORT ST LUCIE | FL | DIAGNOSTIC RADIOLOGY | 11 | 32 | $59,840 | $1,870 | premium | 3.6% | (772) 905-3589 |
| 44 | THE EMORY CLINIC INC | ATLANTA | NJ | NURSE PRACTITIONER | 3484 | 31 | $11,412 | $368 | premium | 4.8% | (404) 778-7525 |
| 45 | CLEVELAND CLINIC FLORIDA | WESTON | FL | NURSE PRACTITIONER | 720 | 31 | $21,874 | $706 | premium | 3.5% | (954) 659-5000 |
| 46 | BASHA DIAGNOSTICS P C | ROYAL OAK | MI | DIAGNOSTIC RADIOLOGY | 25 | 31 | $26,112 | $842 | premium | 9.2% | (248) 288-1600 |
| 47 | MCH PROFESSIONAL CARE HOSPITAL BASED | ODESSA | TX | INTERNAL MEDICINE | 82 | 31 | $7,130 | $230 | premium | 4.4% | (432) 640-2401 |
| 48 | NEW YORK UNIVERSITY | NEW YORK | WA | DIAGNOSTIC RADIOLOGY | 5704 | 31 | $55,236 | $1,782 | premium | 13.8% | (212) 263-9700 |
| 49 | MEDICAL DIAGNOSTIC IMAGING LLC | GREENFIELD | IL | DIAGNOSTIC RADIOLOGY | 13 | 31 | $13,330 | $430 | premium | 4.1% | (414) 282-4100 |
| 50 | RIVERSIDE RADIOLOGY AND INTERVENTIONAL ASSOCIATES INC | COLUMBUS | KY | DIAGNOSTIC RADIOLOGY | 243 | 30 | $11,130 | $371 | premium | 71.4% | (614) 566-5600 |
| 51 | PARLEE AND TATEM RADIOLOGIC ASSOCIATES LTD | DOYLESTOWN | PA | DIAGNOSTIC RADIOLOGY | 15 | 30 | $9,240 | $308 | premium | 4.9% | (215) 345-2290 |
| 52 | SCRIPPS HEALTH | LA JOLLA | CA | PHYSICIAN ASSISTANT | 1431 | 28 | $12,967 | $463 | premium | 1.6% | (858) 455-9100 |
| 53 | SCOTT AND WHITE CLINIC | TEMPLE | TX | PHYSICIAN ASSISTANT | 2435 | 28 | $11,032 | $394 | premium | 4.0% | (254) 724-2663 |
| 54 | NORTHWESTERN MEDICAL FACULTY FOUNDATION | CHICAGO | PA | NURSE PRACTITIONER | 4339 | 28 | $12,964 | $463 | premium | 4.6% | — |
| 55 | RADIOLOGY CONSULTANTS OF IOWA PLC | CEDAR RAPIDS | IA | DIAGNOSTIC RADIOLOGY | 72 | 28 | $7,560 | $270 | premium | 10.7% | (319) 364-0121 |
| 56 | CENTRAL ILLINOIS RADIOLOGICAL ASSOCIATES LTD | PEORIA | IL | DIAGNOSTIC RADIOLOGY | 196 | 27 | $18,171 | $673 | premium | 3.6% | (309) 655-2000 |
| 57 | MEDICAL SCANNING CONSULTANTS PA | ST LOUIS PARK | MN | DIAGNOSTIC RADIOLOGY | 81 | 27 | $34,321 | $1,271 | premium | 1.7% | (952) 541-1840 |
| 58 | TEXAS NEUROLOGY PA | DALLAS | TX | NEUROLOGY | 13 | 27 | $52,110 | $1,930 | premium | 3.8% | (214) 827-3610 |
| 59 | LENOX HILL RADIOLOGY AND MEDICAL IMAGING ASSOCIATES PC | NEW YORK | AZ | DIAGNOSTIC RADIOLOGY | 244 | 27 | $8,682 | $322 | premium | 5.0% | (212) 772-3111 |
| 60 | LAKE MEDICAL IMAGING AND BREAST CENTER AT THE VILLAGES LLC | LEESBURG | FL | DIAGNOSTIC RADIOLOGY | 22 | 27 | $28,350 | $1,050 | premium | 3.1% | (352) 787-5858 |
| 61 | HENNEPIN HEALTHCARE SYSTEM INC | MINNEAPOLIS | MN | PHYSICIAN ASSISTANT | 895 | 25 | $15,200 | $608 | premium | 1.6% | (612) 873-6963 |
| 62 | DENT NEUROLOGIC GROUP LLP | AMHERST | NY | PHYSICIAN ASSISTANT | 116 | 25 | $26,750 | $1,070 | premium | 2.4% | (716) 250-2000 |
| 63 | JUPITER MEDICAL CENTER PHYSICIANS GROUP INC | JUPITER | CT | PHYSICIAN ASSISTANT | 147 | 24 | $15,912 | $663 | premium | 25.3% | (561) 747-2234 |
| 64 | ADVANCED RADIOLOGY SERVICES PC | GRAND RAPIDS | MI | DIAGNOSTIC RADIOLOGY | 249 | 24 | $7,128 | $297 | premium | 7.1% | (616) 363-7272 |
| 65 | SUTTER VALLEY MEDICAL FOUNDATION | SACRAMENTO | CA | DIAGNOSTIC RADIOLOGY | 2420 | 23 | $26,133 | $1,136 | premium | 1.3% | (916) 681-8852 |
| 66 | RADIOLOGY CONSULTANTS PC | OMAHA | NE | DIAGNOSTIC RADIOLOGY | 46 | 22 | $6,468 | $294 | premium | 33.8% | (402) 717-4760 |
| 67 | BOWLING GREEN-WARREN COUNTY COMMUNITY HOSPITAL CORPORATION | BOWLING GREEN | IN | NURSE PRACTITIONER | 79 | 22 | $6,248 | $284 | premium | 28.6% | (270) 843-5103 |
| 68 | PIMA NEUROLOGY INC | TUCSON | AZ | NURSE PRACTITIONER | 3 | 21 | $4,032 | $192 | premium | 3.9% | (520) 638-5553 |
| 69 | RADIOLOGY ASSOCIATES LLP | CORPUS CHRISTI | TX | DIAGNOSTIC RADIOLOGY | 15 | 21 | $40,665 | $1,936 | premium | 3.0% | (361) 887-7000 |
| 70 | RWJBH OBSERVATION ASSOCIATES LLC | SOMERVILLE | NJ | PHYSICIAN ASSISTANT | 937 | 20 | $13,542 | $677 | premium | 3.1% | (908) 685-2200 |
| 71 | DIAGNOSTIC MEDICAL IMAGING PA | COLUMBIA | MD | DIAGNOSTIC RADIOLOGY | 11 | 19 | $3,458 | $182 | premium | 5.3% | (480) 207-4091 |
| 72 | ST PAUL PLACE SPECIALISTS, INC. | BALTIMORE | MD | PHYSICIAN ASSISTANT | 337 | 19 | $5,377 | $283 | premium | 5.3% | (410) 663-8100 |
| 73 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | NJ | DIAGNOSTIC RADIOLOGY | 123 | 19 | $5,225 | $275 | premium | 2.9% | (757) 466-6870 |
| 74 | WINCHESTER RADIOLOGISTS PC | WINCHESTER | VA | DIAGNOSTIC RADIOLOGY | 79 | 18 | $7,614 | $423 | premium | 1.9% | (540) 686-1600 |
| 75 | SIMONMED IMAGING FLORIDA LLC | ORLANDO | FL | DIAGNOSTIC RADIOLOGY | 273 | 18 | $40,500 | $2,250 | premium | 2.1% | (407) 608-6800 |
| 76 | SOUTH SHORE RADIOLOGICAL ASSOCIATES INC | SOUTH WEYMOUTH | CT | DIAGNOSTIC RADIOLOGY | 36 | 18 | $5,346 | $297 | premium | 18.9% | (781) 340-8000 |
| 77 | ADVANCED GENERAL RADIOLOGY LLC | NEWTON | KS | DIAGNOSTIC RADIOLOGY | 2 | 18 | $5,040 | $280 | premium | 14.6% | (316) 283-2700 |
| 78 | MEDICAL CENTER RADIOLOGISTS INC | NORFOLK | MD | DIAGNOSTIC RADIOLOGY | 123 | 17 | $4,675 | $275 | premium | 4.7% | (757) 466-6870 |
| 79 | AHS OKLAHOMA HEART LLC | TULSA | OK | PHYSICIAN ASSISTANT | 136 | 17 | $3,485 | $205 | premium | 60.7% | (918) 592-0999 |
| 80 | JOHNS HOPKINS UNIVERSITY | WASHINGTON | MA | MEDICAL ONCOLOGY | 196 | 17 | $18,700 | $1,100 | premium | 1.8% | (202) 537-4000 |
| 81 | MAYO CLINIC | ROCHESTER | MN | NURSE PRACTITIONER | 4896 | 16 | $70,333 | $4,396 | premium | 1.0% | (507) 284-2511 |
| 82 | DUPAGE MEDICAL GROUP LTD | GLEN ELLYN | IL | PHYSICIAN ASSISTANT | 1323 | 16 | $42,960 | $2,685 | premium | 2.1% | (630) 469-9200 |
| 83 | JOHNS HOPKINS UNIVERSITY | WASHINGTON | MD | MEDICAL ONCOLOGY | 196 | 16 | $17,600 | $1,100 | premium | 4.5% | (202) 537-4000 |
| 84 | REAGAN MEDICAL CENTER LLC | LAWRENCEVILLE | GA | PHYSICIAN ASSISTANT | 17 | 15 | $40,610 | $2,707 | premium | 3.6% | (678) 344-8700 |
| 85 | UNMC PHYSICIANS | OMAHA | NE | PHYSICIAN ASSISTANT | 1514 | 15 | $4,143 | $276 | premium | 23.1% | (402) 559-4000 |
| 86 | MAYO CLINIC JACKSONVILLE | JACKSONVILLE | NY | NURSE PRACTITIONER | 1587 | 15 | $74,010 | $4,934 | premium | 1.4% | (904) 953-2000 |
| 87 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC | BOSTON | MA | PHYSICIAN ASSISTANT | 2942 | 15 | $5,443 | $363 | premium | 1.6% | (617) 732-5500 |
| 88 | KANSAS UNIVERSITY PHYSICIANS INC | KANSAS CITY | UT | NURSE PRACTITIONER | 1815 | 14 | $2,928 | $209 | premium | 35.0% | (913) 588-1227 |
| 89 | RADIOLOGY ASSOCIATES OF NORTH TEXAS PA | FORT WORTH | TX | DIAGNOSTIC RADIOLOGY | 340 | 14 | $4,984 | $356 | premium | 2.0% | (817) 321-0470 |
| 90 | SANTA BARBARA RADIOLOGY MEDICAL GROUP, INC. | SANTA BARBARA | CA | DIAGNOSTIC RADIOLOGY | 10 | 14 | $4,960 | $354 | premium | 0.8% | (805) 569-7279 |
| 91 | HARVARD MEDICAL FACULTY PHYS AT BETH ISRAEL DEACONESS MED CTR INC | BOSTON | LA | INTERNAL MEDICINE | 1689 | 14 | $4,018 | $287 | premium | 100.0% | (781) 983-9088 |
| 92 | ARIZONA DIAGNOSTIC RADIOLOGY GROUP LLC | GILBERT | AZ | DIAGNOSTIC RADIOLOGY | 60 | 14 | $24,572 | $1,755 | premium | 2.6% | (480) 354-9200 |
| 93 | OSU RADIOLOGY LLC | COLUMBUS | OH | DIAGNOSTIC RADIOLOGY | 174 | 13 | $5,005 | $385 | premium | 18.8% | (614) 293-8315 |
| 94 | PRISMA HEALTH UNIVERSITY MEDICAL GROUP | GREENVILLE | SC | NURSE PRACTITIONER | 2447 | 13 | $3,471 | $267 | premium | 18.1% | — |
| 95 | BEND NEUROLOGICAL ASSOCIATES LLC | BEND | OR | NEUROLOGY | 5 | 13 | $27,724 | $2,133 | premium | 15.1% | (541) 317-0044 |
| 96 | COMMUNITY RADIOLOGY ASSOCIATES INC | FREDERICK | DC | DIAGNOSTIC RADIOLOGY | 62 | 13 | $24,310 | $1,870 | premium | 21.7% | (888) 601-0943 |
| 97 | MINNEAPOLIS CLINIC OF NEUROLOGY LTD | GOLDEN VALLEY | MN | NEUROLOGY | 72 | 13 | $33,899 | $2,608 | premium | 0.8% | (763) 588-0661 |
| 98 | EAST RIVER MEDICAL IMAGING PC | NEW YORK | NY | DIAGNOSTIC RADIOLOGY | 10 | 13 | $32,500 | $2,500 | premium | 1.2% | (212) 288-7615 |
| 99 | IMAGING ASSOCIATES LLC | ANCHORAGE | AK | DIAGNOSTIC RADIOLOGY | 23 | 13 | $62,100 | $4,777 | premium | 18.8% | (901) 222-4624 |
| 100 | ALTRU HEALTH SYSTEM | GRAND FORKS | ND | NURSE PRACTITIONER | 653 | 13 | $4,147 | $319 | premium | 48.1% | (701) 780-5000 |
Showing the top 100 of 107 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 →