NEVVI Medicare utilization intelligence
+ Build a code basket
Medicare California · CY2024

Who bills the most Hospital discharge day management, more than 30 minutes (99239) to Medicare in California?

Medicare Part B FFS · CY2024 · as published by CMS
470
Billing groups
323,132
Named-group FFS services
$129,731,706
Named-group submitted charges
$401
Avg charge / service
$119
Avg allowed / service
25%
Top-5 concentration
0%
Independent share

470 physician groups billed Hospital discharge day management, more than 30 minutes (99239) to Medicare fee-for-service in California in 2024; the top five named groups hold 25% of that volume, and independent (non-hospital-affiliated) groups deliver 0%.

99239 — Hospital discharge day management, more than 30 minutes · Source: CMS Medicare Physician & Other Practitioners PUF (Part B), CY2024 release. Medicare fee-for-service only.

Snapshot covers the whole California market — the table below shows the top 100 groups (free tier).

Payer-mix context

Medicare fee-for-service covers 49% of Medicare in California; Medicare Advantage penetration 45% → 51% since 2020.

Market structure — concentration, independent share, and the consolidation trend for this market — is part of the market analytics platform — built, not launched yet. Notify me at launch →
#Physician groupCityStSpecialty Providers 99239 svcs Share*Phone
1 SUTTER BAY MEDICAL FOUNDATION PALO ALTOCAINTERNAL MEDICINE 3716 21,564 4.5% (415) 600-1020
2 SUTTER VALLEY MEDICAL FOUNDATION SACRAMENTOCADIAGNOSTIC RADIOLOGY 2420 19,035 4.0% (916) 681-8852
3 DIGNITY HEALTH MEDICAL FOUNDATION FOLSOMCADIAGNOSTIC RADIOLOGY 1197 15,659 3.3% (916) 983-7476
4 GALEN INPATIENT PHYSICIANS PC PENSACOLACAHOSPITALIST 1012 12,940 2.7% (850) 416-7000
5 PROVIDENCE MEDICAL FOUNDATION FULLERTONCAPHYSICIAN ASSISTANT 1455 12,496 2.6% (714) 871-3006
6 THE REGENTS OF THE UNIVERSITY OF CALIFORNIA LOS ANGELESCAINTERNAL MEDICINE 1424 9,427 2.0% (310) 825-7922
7 JOHN MUIR PHYSICIAN NETWORK WALNUT CREEKCAFAMILY PRACTICE 489 8,639 1.8% (925) 296-9720
8 STANFORD HEALTH CARE STANFORDCADIAGNOSTIC RADIOLOGY 3039 8,211 1.7% (650) 723-4000
9 PACIFIC HOSPITALIST ASSOCIATES A MEDICAL CORPORATION NEWPORT BEACHCAHOSPITALIST 91 7,966 1.7% (877) 742-4624
10 CEDARS-SINAI MEDICAL CARE FOUNDATION LOS ANGELESCAPHYSICIAN ASSISTANT 1699 7,604 1.6% (310) 423-0674
11 EISENHOWER MEDICAL CENTER RANCHO MIRAGECANURSE PRACTITIONER 457 6,283 1.3% (760) 340-3911
12 PACIFIC INPATIENT MEDICAL GROUP SAN FRANCISCOCAINTERNAL MEDICINE 129 6,251 1.3% (415) 485-8824
13 SCRIPPS HEALTH LA JOLLACAPHYSICIAN ASSISTANT 1431 5,899 1.2% (858) 455-9100
14 NORTH COUNTY INPATIENT MEDICAL ALLIANCE, A MEDICAL GROUP, INC ENCINITASCAINTERNAL MEDICINE 46 4,769 1.0% (760) 230-2551
15 VITUITY HOSPITALISTS PC REDDINGCAHOSPITALIST 79 4,486 0.9% (530) 225-6000
16 COMMUNITY HEALTH PARTNERS FRESNOCAINTERNAL MEDICINE 509 3,960 0.8% (559) 459-6000
17 COUNTY OF SANTA CLARA SAN JOSECAINTERNAL MEDICINE 1001 3,948 0.8% (408) 885-5000
18 INPATIENT SPECIALISTS OF CALIFORNIA PC SAN BERNARDINOCAINTERNAL MEDICINE 370 3,675 0.8% (909) 883-8711
19 EPIC MEDICAL GROUP,INC SHERMAN OAKSCANURSE PRACTITIONER 52 3,568 0.7% (818) 528-1260
20 TORRANCE HEALTH ASSOCIATION INC TORRANCECAFAMILY PRACTICE 298 3,484 0.7% (310) 257-7260
21 HOSPITALISTS OF MODESTO MEDICAL GROUP INC MODESTOCAINTERNAL MEDICINE 87 3,459 0.7% (209) 576-3525
22 REGENTS OF THE UNIV OF CA SACRAMENTOCADIAGNOSTIC RADIOLOGY 1608 3,333 0.7% (877) 827-7463
23 PENINSULA HOSPITALIST ASSOCIATES INC BURLINGAMECAHOSPITALIST 35 3,195 0.7% (650) 696-3520
24 MEMORIALCARE MEDICAL FOUNDATION LONG BEACHCAFAMILY PRACTICE 549 3,133 0.7% (562) 346-2222
25 ENLOE MEDICAL CENTER CHICOCADIAGNOSTIC RADIOLOGY 362 3,067 0.6% (530) 332-4470
26 CENTRAL COAST IN-PATIENT CONSULTANTS INC SANTA MARIACAINTERNAL MEDICINE 33 3,017 0.6% (805) 739-3000
27 PROVIDENCE FACEY MEDICAL FOUNDATION MISSION HILLSCAFAMILY PRACTICE 320 2,893 0.6% (818) 365-9531
28 MONTEREY HOSPITALIST MEDICAL GROUP MONTEREYCAHOSPITALIST 35 2,870 0.6% (831) 625-4311
29 REGENTS OF THE UNIVERSITY OF CALIFORNIA SAN DIEGOCADIAGNOSTIC RADIOLOGY 2057 2,825 0.6% (800) 926-8273
30 REGENTS OF THE UNIVERSITY OF CALIFORNIA SAN FRANCISCOCAHOSPITALIST 746 2,691 0.6% (415) 476-4029
31 PROVIDENCE SAINT JOHNS MEDICAL FOUNDATION SANTA MONICACAPHYSICIAN ASSISTANT 287 2,500 0.5% (310) 829-6789
32 PROVIDENCE MEDICAL INSTITUTE TORRANCECAINTERNAL MEDICINE 339 2,411 0.5% (310) 303-7496
33 HOSPITALIST CORPORATION OF INLAND EMPIRE POMONACAINTERNAL MEDICINE 24 2,191 0.5% (909) 630-7158
34 THE REGENTS OF THE UNIVERSITY OF CALIFORNIA-IRVINE ORANGECAINTERNAL MEDICINE 96 2,122 0.4% (714) 456-7890
35 HOSPITALIST MEDICINE PHYSICIANS OF CALIFORNIA INC FREMONTCAINTERNAL MEDICINE 115 2,087 0.4% (510) 797-1111
36 SHASTA REGIONAL MEDICAL GROUP INC REDDINGCANURSE PRACTITIONER 39 2,070 0.4% (530) 605-4260
37 XIMED HOSPITALISTS, INC. LA JOLLACAINTERNAL MEDICINE 36 2,059 0.4% (858) 457-4123
38 MARSHALL MEDICAL CENTER PLACERVILLECAPHYSICIAN ASSISTANT 154 2,050 0.4%
39 SVMHS CLINICS SALINASCAPHYSICIAN ASSISTANT 245 2,045 0.4% (831) 422-3636
40 PACIFIC INPATIENT PHYSICIANS VENTURACAINTERNAL MEDICINE 33 2,035 0.4% (805) 652-5652
41 SHARP REES-STEALY MEDICAL GROUP INC SAN DIEGOCAPHYSICIAN ASSISTANT 872 1,984 0.4% (858) 499-2600
42 SCRIPPS HEALTH INPATIENT PROVIDERS MEDICAL GROUP INC SAN DIEGOCAINTERNAL MEDICINE 205 1,979 0.4% (619) 294-8111
43 QUANTUM HEALTHCARE MEDICAL ASSOCIATES INC COLTONCAINTERNAL MEDICINE 108 1,848 0.4% (909) 580-1000
44 SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP LOS ANGELESCAINTERNAL MEDICINE 11157 1,816 0.4% (800) 954-8000
45 CHEST AND CRITICAL CARE CONSULTANTS A MEDICAL GROUP TUSTINCAINTERNAL MEDICINE 69 1,803 0.4% (714) 573-8200
46 OROHEALTH CORPORATION A NON PROFIT HEALTHCARE SYSTEM OROVILLECAINTERNAL MEDICINE 124 1,733 0.4% (530) 532-8654
47 VALLEY HOSPITALIST MEDICAL GROUP, INC VISALIACAFAMILY PRACTICE 34 1,706 0.4% (559) 909-0264
48 SANSUM CLINIC SANTA BARBARACAINTERNAL MEDICINE 322 1,688 0.4% (805) 681-7500
49 ALAMEDA HEALTH SYSTEM OAKLANDCAINTERNAL MEDICINE 601 1,666 0.3% (510) 437-4800
50 ALLURE MEDICAL GROUP A PROFESSIONAL CORPORATION THOUSAND OAKSCAINTERNAL MEDICINE 7 1,663 0.3% (866) 545-2570
51 FACULTY PHYSICIANS AND SURGEONS OF LLUSM LOMA LINDACADIAGNOSTIC RADIOLOGY 1317 1,658 0.3%
52 DESERT VALLEY MEDICAL GROUP INC VICTORVILLECANURSE PRACTITIONER 76 1,528 0.3% (760) 241-8000
53 ARCADIA HOSPITALIST MEDICAL GROUP INC ARCADIACAINTERNAL MEDICINE 32 1,526 0.3% (626) 898-8000
54 QUANTUM BAY AREA HOSPITALIST MEDICAL GROUP INC MOUNTAIN VIEWCAINTERNAL MEDICINE 57 1,506 0.3% (650) 940-7000
55 CENTRIC HEALTH BAKERSFIELDCAINTERNAL MEDICINE 63 1,465 0.3%
56 SOUTHERN CALIFORNIA HOSPITALIST NETWORK MEDICAL GROUP INC ORANGECAINTERNAL MEDICINE 74 1,444 0.3% (714) 202-2330
57 RIVERSIDE FACULTY MEDICAL GROUP INC MORENO VALLEYCAINTERNAL MEDICINE 79 1,441 0.3% (951) 656-1500
58 CENTINELA HOSPITALIST MEDICAL GROUP INC INGLEWOODCAINTERNAL MEDICINE 11 1,398 0.3% (310) 673-4660
59 PIH HEALTH PHYSICIANS WHITTIERCAINTERNAL MEDICINE 606 1,237 0.3% (562) 698-0811
60 CITY OF HOPE MEDICAL FOUNDATION DUARTECANURSE PRACTITIONER 942 1,155 0.2% (626) 256-4673
61 PERMANENTE MEDICAL GROUP INC SANTA CLARACAINTERNAL MEDICINE 10890 1,081 0.2% (408) 851-1000
62 PROHEALTH PARTNERS, A MEDICAL GROUP LONG BEACHCAINTERNAL MEDICINE 228 1,070 0.2% (562) 495-4952
63 NORTHBAY PHYSICIANS SURGERY CENTER, LLC FAIRFIELDCAPHYSICIAN ASSISTANT 344 1,011 0.2% (707) 429-3600
64 KANSAL INC WEST HOLLYWOODCAINTERNAL MEDICINE 19 956 0.2% (800) 233-2771
65 AARON K TRAN MD INC TORRANCECAINTERNAL MEDICINE 5 944 0.2% (310) 540-7676
66 MERCED HOSPITALIST MEDICAL GROUP INC MERCEDCAINTERNAL MEDICINE 41 913 0.2% (209) 564-5000
67 USC CARE MEDICAL GROUP INC LOS ANGELESCADIAGNOSTIC RADIOLOGY 1374 892 0.2% (800) 872-2273
68 FIRST CHOICE PHYSICIAN PARTNERS PALM SPRINGSCAPHYSICIAN ASSISTANT 148 889 0.2%
69 ALAMEDA INPATIENT MEDICAL INC ALAMEDACAINTERNAL MEDICINE 22 803 0.2% (510) 814-4397
70 ACUTE CARE ASSOCIATES OF CALIFORNIA PC WILDOMARCAINTERNAL MEDICINE 54 801 0.2% (951) 677-1111
71 PALOMAR HOSPITALIST MEDICAL GROUP INC ESCONDIDOCAINTERNAL MEDICINE 50 797 0.2% (310) 379-2134
72 LIFE MEDICAL PRACTITIONERS SAN DIEGOCAINTERNAL MEDICINE 21 786 0.2% (818) 823-6717
73 EMERGENCY AND ACUTE CARE MEDICAL CORPORATION SAN DIEGOCAINTERNAL MEDICINE 450 760 0.2% (858) 939-3400
74 ASAD U KHAJA MD INC TORRANCECAINTERNAL MEDICINE 8 744 0.2% 8774861368801
75 MY MD INC ORANGECANURSE PRACTITIONER 7 734 0.2% (714) 356-6105
76 ALPHA HOSPITALIST GROUP INC FOUNTAIN VALLEYCANURSE PRACTITIONER 12 722 0.2% (714) 966-7200
77 FAROOQUI MEDICAL ASSOCIATES INC NORTHRIDGECAINTERNAL MEDICINE 2 718 0.1% (818) 885-8500
78 RAZI MEDICAL GROUP INC VICTORVILLECANURSE PRACTITIONER 8 700 0.1% (760) 713-6969
79 PACIFIC COAST REHABILITATION ESCONDIDOCAPHYSICAL MEDICINE AND REHABILITATION 7 699 0.1% (442) 277-6100
80 ARROYO OAKS MEDICAL ASSOCIATES INC THOUSAND OAKSCAINTERNAL MEDICINE 11 695 0.1% 80549510665000
81 SAINT AGNES MEDICAL FOUNDATION FRESNOCAINTERNAL MEDICINE 155 683 0.1% (559) 450-5777
82 24 ON PHYSICIANS OF CALIFORNIA PC EL CENTROCAINTERNAL MEDICINE 59 683 0.1% (760) 339-4045
83 SYCAMORE HILL HOSPITALIST MEDICAL GROUP INC LOS ANGELESCAINTERNAL MEDICINE 17 669 0.1% (213) 413-3000
84 MONTEREY BAY OBSERVATION MEDICINE MONTEREYCAEMERGENCY MEDICINE 30 606 0.1% (831) 625-4900
85 BEAVER MEDICAL GROUP P C REDLANDSCAFAMILY PRACTICE 247 588 0.1% (909) 294-3682
86 PROVIDENCE HEALTHCARE PARTNERS INC RIVERSIDECAINTERNAL MEDICINE 26 585 0.1% (951) 788-3000
87 HEALTHCARE CROSSING CORPORATION MURRIETACAINTERNAL MEDICINE 17 578 0.1% (951) 894-4665
88 EL CAMINO HEALTH MEDICAL NETWORK LLC SAN JOSECAPHYSICIAN ASSISTANT 199 564 0.1% (408) 871-3400
89 TEMECULA VALLEY HOSPITALIST MEDICAL GROUP INC TEMECULACAINTERNAL MEDICINE 28 557 0.1% (951) 331-2200
90 SAN FERNANDO VALLEY MEDICAL GROUP INC SHERMAN OAKSCAINTERNAL MEDICINE 13 555 0.1% (818) 325-0200
91 PALOMA INCARE MISSION VIEJOCAINTERNAL MEDICINE 11 553 0.1% (949) 364-7756
92 HOSPITALISTS OF THE PENINSULA BURLINGAMECAINTERNAL MEDICINE 3 547 0.1% (408) 988-4888
93 JOSEPH TERRAZZINO M D INC VALENCIACAPHYSICAL MEDICINE AND REHABILITATION 3 546 0.1% (661) 254-0172
94 ST JOSEPH HOSPITALIST MEDICAL GROUP INC BURBANKCAINTERNAL MEDICINE 12 543 0.1% (818) 843-5111
95 RANCHO FAMILY MEDICAL GROUP INC TEMECULACAPHYSICIAN ASSISTANT 104 536 0.1% (951) 676-4193
96 CENTURION VALLEY HEALTHCARE INC MODESTOCANEPHROLOGY 2 529 0.1% (209) 910-0701
97 SUPERIOR HOSPITALIST MEDICAL GROUP INC LOS ANGELESCAINTERNAL MEDICINE 75 521 0.1% (424) 338-8000
98 APOLLOMED HOSPITALISTS A MEDICAL CORPORATION MONTEREY PARKCAINTERNAL MEDICINE 32 514 0.1% (818) 839-5200
99 VITUITY-CALIFORNIA OBSERVATION SERVICES PC ROSEVILLECAEMERGENCY MEDICINE 80 512 0.1% (916) 781-1000
100 UNIVERSITY OF CALIFORNIA SFGH MEDICAL GROUP SAN FRANCISCOCAINTERNAL MEDICINE 593 499 0.1% (628) 206-4774

*Share of California's disclosed Medicare-FFS services for 99239, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing 99239 in California — including groups registered elsewhere ("City" is each 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.

How to read this. Figures are Medicare fee-for-service only — not all-payer — from the CMS Medicare Physician & Other Practitioners Public Use File (Part B), CY2024 release. CMS suppresses any provider×code row under 11 beneficiaries, so a missing group means "suppressed," never zero. "Charges" are provider-submitted amounts, not payments. Groups are ranked by measured service volume attributed to clinicians in exactly one group — clinicians affiliated with several groups are listed in rosters but never volume-attributed to a single group — a direct read of the public record, not a rating or quality score. Full method: Methods & Sources.

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 →