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Medicare California · CY2024

Who bills the most Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101) to Medicare in California?

Medicare Part B FFS · CY2024 · as published by CMS
163
Billing groups
29,360
Named-group FFS services
$3,154,815
Named-group submitted charges
$107
Avg charge / service
$42
Avg allowed / service
27%
Top-5 concentration
1%
Independent share

163 physician groups billed Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101) to Medicare fee-for-service in California in 2024; the top five named groups hold 27% of that volume, and independent (non-hospital-affiliated) groups deliver 1%.

G0101 — Cervical or vaginal cancer screening; pelvic and clinical breast examination · 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 G0101 svcs Share*Phone
1 SUTTER BAY MEDICAL FOUNDATION PALO ALTOCAINTERNAL MEDICINE 3716 2,148 4.7% (415) 600-1020
2 HOAG CLINIC NEWPORT BEACHCAPHYSICIAN ASSISTANT 436 1,542 3.4% (949) 791-3370
3 SUTTER VALLEY MEDICAL FOUNDATION SACRAMENTOCADIAGNOSTIC RADIOLOGY 2420 1,521 3.4% (916) 681-8852
4 EISENHOWER MEDICAL CENTER RANCHO MIRAGECANURSE PRACTITIONER 457 1,456 3.2% (760) 340-3911
5 UNIVERSITY HEALTHCARE ALLIANCE PLEASANTONCAINTERNAL MEDICINE 332 1,203 2.7% (925) 462-7060
6 SCRIPPS HEALTH LA JOLLACAPHYSICIAN ASSISTANT 1431 820 1.8% (858) 455-9100
7 REGENTS UNIV OF CALIFORNIA UCSF SAN FRANCISCOCAPHYSICIAN ASSISTANT 277 799 1.8% (415) 476-1000
8 DIGNITY HEALTH MEDICAL FOUNDATION FOLSOMCADIAGNOSTIC RADIOLOGY 1197 748 1.7% (916) 983-7476
9 PROVIDENCE MEDICAL FOUNDATION FULLERTONCAPHYSICIAN ASSISTANT 1455 735 1.6% (714) 871-3006
10 BASS MEDICAL GROUP WALNUT CREEKCAOTOLARYNGOLOGY 318 708 1.6%
11 KARIE MCMURRAY MD INC A MEDICAL CORPORATION THOUSAND OAKSCANURSE PRACTITIONER 2 699 1.5% (805) 371-4708
12 UCSF HEALTH MEDICAL FOUNDATION REDWOOD CITYCAOBSTETRICS/GYNECOLOGY 39 654 1.4% (650) 701-1882
13 PROHEALTH PARTNERS, A MEDICAL GROUP LONG BEACHCAINTERNAL MEDICINE 228 551 1.2% (562) 495-4952
14 CEDARS-SINAI MEDICAL CARE FOUNDATION LOS ANGELESCAPHYSICIAN ASSISTANT 1699 520 1.1% (310) 423-0674
15 PACIFIC CENTRAL COAST HEALTH CENTERS SANTA MARIACAPHYSICIAN ASSISTANT 249 513 1.1% (805) 349-8514
16 ADVENTIST HEALTH PHYSICIANS NETWORK HANFORDCANURSE PRACTITIONER 651 506 1.1% (559) 583-4695
17 MEMORIALCARE MEDICAL FOUNDATION LONG BEACHCAFAMILY PRACTICE 549 492 1.1% (562) 346-2222
18 PROVIDENCE SAINT JOHNS MEDICAL FOUNDATION SANTA MONICACAPHYSICIAN ASSISTANT 287 418 0.9% (310) 829-6789
19 PROVIDENCE FACEY MEDICAL FOUNDATION MISSION HILLSCAFAMILY PRACTICE 320 336 0.7% (818) 365-9531
20 COMMUNITY FOUNDATION MEDICAL GROUP FRESNOCAPHYSICIAN ASSISTANT 292 336 0.7%
21 REGENTS OF THE UNIVERSITY OF CALIFORNIA LOS ANGELES SANTA MONICACAOBSTETRICS/GYNECOLOGY 80 312 0.7% (310) 319-5098
22 PACIFIC WOMENS OBSTETRICS AND GYNECOLOGY MEDICAL GROUP INC SAN FRANCISCOCAOBSTETRICS/GYNECOLOGY 8 302 0.7% (415) 379-9794
23 UCSF HEALTH MEDICAL FOUNDATION SAN FRANCISCOCAPHYSICIAN ASSISTANT 70 299 0.7% (415) 964-4866
24 PROVIDENCE MEDICAL INSTITUTE TORRANCECAINTERNAL MEDICINE 339 297 0.7% (310) 303-7496
25 MONTEREY OBGYN MEDICAL GROUP INC RANCHO MIRAGECAOBSTETRICS/GYNECOLOGY 3 295 0.7% (760) 779-5511
26 SANSUM CLINIC SANTA BARBARACAINTERNAL MEDICINE 322 287 0.6% (805) 681-7500
27 DRS HYMAN AND TIO A PARTNERSHIP FOR WOMENS HEALTH AGOURA HILLSCAOBSTETRICS/GYNECOLOGY 2 283 0.6% (818) 932-0728
28 PIH HEALTH PHYSICIANS WHITTIERCAINTERNAL MEDICINE 606 281 0.6% (562) 698-0811
29 LPCH MEDICAL GROUP DIV OF LUCILE PALO ALTOCAPEDIATRIC MEDICINE 327 274 0.6% (650) 498-7200
30 MAREENI T STANISLAUS MD A MEDICAL CORPORATION TEMPLETONCANURSE PRACTITIONER 3 253 0.6% (805) 434-3000
31 USC CARE MEDICAL GROUP INC LOS ANGELESCADIAGNOSTIC RADIOLOGY 1374 240 0.5% (800) 872-2273
32 INCONTINENCE AND PELVIC SUPPORT INSTITUTE MISSION VIEJOCAOBSTETRICS/GYNECOLOGY 3 235 0.5% (714) 364-4400
33 P. GILL OBSTETRICS AND GYNECOLOGY MEDICAL GROUP, INC. STOCKTONCAOBSTETRICS/GYNECOLOGY 12 233 0.5% (209) 466-8546
34 WOMENS OBGYN SANTA ROSACAOBSTETRICS/GYNECOLOGY 2 229 0.5% (707) 575-1626
35 HELEN HUYNH D O INC ROSEMEADCAOBSTETRICS/GYNECOLOGY 2 225 0.5% (626) 773-8900
36 OBHG CALIFORNIA PC LA MESACAOBSTETRICS/GYNECOLOGY 90 224 0.5% (619) 740-6000
37 ASSOCIATED OB GYN SPECIALISTS OF SANTA BARBARA SANTA BARBARACAOBSTETRICS/GYNECOLOGY 2 210 0.5% (805) 682-8166
38 WHITNEY DIXON MD INC CHICOCANURSE PRACTITIONER 3 209 0.5% (530) 899-9616
39 MONTAGE MEDICAL GROUP MONTEREYCAFAMILY PRACTICE 125 208 0.5% (831) 718-9701
40 LOS ANGELES HEMATOLOGY-ONCOLOGY MEDICAL GROUP LOS ANGELESCAHEMATOLOGY/ONCOLOGY 51 207 0.5% (213) 977-1214
41 TORRANCE HEALTH ASSOCIATION INC TORRANCECAFAMILY PRACTICE 298 204 0.5% (310) 257-7260
42 RODEO MEDICAL GROUP BEVERLY HILLSCAOBSTETRICS/GYNECOLOGY 6 200 0.4% (310) 432-6640
43 ENLOE MEDICAL CENTER CHICOCADIAGNOSTIC RADIOLOGY 362 199 0.4% (530) 332-4470
44 COMMUNITY MEMORIAL HEALTH SYSTEM VENTURACAFAMILY PRACTICE 190 188 0.4% (805) 652-5011
45 REGENTS OF THE UNIVERSITY OF CALIFORNIA SAN DIEGOCADIAGNOSTIC RADIOLOGY 2057 183 0.4% (800) 926-8273
46 WASHINGTON TOWNSHIP MEDICAL FOUNDATION FREMONTCACRITICAL CARE (INTENSIVISTS) 120 182 0.4% (510) 248-1000
47 ROSE WOMEN'S HEALTH ARCADIACAOBSTETRICS/GYNECOLOGY 2 181 0.4% (626) 461-7071
48 JOHN MUIR PHYSICIAN NETWORK WALNUT CREEKCAFAMILY PRACTICE 489 180 0.4% (925) 296-9720
49 SIMI OBSTETRICS AND GYNECOLOGY MEDICAL GROUP A MEDICAL CORP SIMI VALLEYCAOBSTETRICS/GYNECOLOGY 4 172 0.4% (805) 527-8055
50 LUDMILA B BESS MD A PROFESSIONAL CORPORATION LOS ANGELESCAOBSTETRICS/GYNECOLOGY 2 169 0.4% 3239348877228
51 RANCHO FAMILY MEDICAL GROUP INC TEMECULACAPHYSICIAN ASSISTANT 104 168 0.4% (951) 676-4193
52 OBSTETRICS AND GYNECOLOGY MEDICAL GROUP OF VERDUGO HILLS GLENDALECAOBSTETRICS/GYNECOLOGY 2 163 0.4% (818) 790-8121
53 SVMHS CLINICS SALINASCAPHYSICIAN ASSISTANT 245 162 0.4% (831) 422-3636
54 WOMEN TO WOMEN OBGYN OF LOS ANGELES LOS ANGELESCAOBSTETRICS/GYNECOLOGY 2 159 0.4% (323) 452-9655
55 SO-CAL COMMUNITY HEALTH CENTER ARLETACAFAMILY PRACTICE 2 151 0.3% (818) 746-2626
56 CHINESE HOSPITAL ASSOCIATION SAN FRANCISCOCAINTERNAL MEDICINE 34 142 0.3% (415) 677-2370
57 WEST COAST OB/GYN, INC. SAN DIEGOCAOBSTETRICS/GYNECOLOGY 14 140 0.3% (858) 277-9378
58 SELAH WOMEN'S HEALTH PC REDDINGCAOBSTETRICS/GYNECOLOGY 4 138 0.3% (530) 338-0002
59 COMMUNITY HEALTH PARTNERS FRESNOCAINTERNAL MEDICINE 509 130 0.3% (559) 459-6000
60 VALLEY WOMEN'S HEALTHCARE MEDICAL GROUP INC FRESNOCAOBSTETRICS/GYNECOLOGY 2 128 0.3% (559) 244-0133
61 MACER MEDICAL ROLLING HILLS ESTATESCAGENERAL PRACTICE 3 120 0.3% (310) 541-8400
62 IGO MEDICAL GROUP AMC SAN DIEGOCAOBSTETRICS/GYNECOLOGY 11 117 0.3% 8584551248145
63 THE REGENTS OF THE UNIVERSITY OF CALIFORNIA LOS ANGELESCAOBSTETRICS/GYNECOLOGY 54 117 0.3% (310) 794-7274
64 EL CAMINO HEALTH MEDICAL NETWORK LLC SAN JOSECAPHYSICIAN ASSISTANT 199 116 0.3% (408) 871-3400
65 EMANATE HEALTH MEDICAL CARE FOUNDATION WEST COVINACAFAMILY PRACTICE 81 109 0.2% (626) 732-8391
66 ADVENTIST HEALTH CLEARLAKE HOSPITAL INC. CLEARLAKECADIAGNOSTIC RADIOLOGY 88 105 0.2% (707) 994-6486
67 ARROYO OAKS MEDICAL ASSOCIATES INC THOUSAND OAKSCAINTERNAL MEDICINE 11 100 0.2% 80549510665000
68 IMPERIAL VALLEY FAMILY CARE MEDICAL GROUP A P C EL CENTROCAFAMILY PRACTICE 23 98 0.2% (760) 353-6363
69 HM MEDICAL INC A PROFESSIONAL MEDICAL CORP NEWPORT BEACHCAOBSTETRICS/GYNECOLOGY 2 92 0.2% (949) 646-2800
70 NEWPORT BEACH OB/GYN MEDICAL GROUP INC. NEWPORT BEACHCAOBSTETRICS/GYNECOLOGY 2 91 0.2% (949) 642-5775
71 H ELENA RODRIGUEZ MD INC TorranceCAOBSTETRICS/GYNECOLOGY 2 89 0.2%
72 DESILVA MEDICAL, INC. PALMDALECAINTERNAL MEDICINE 2 88 0.2% (661) 726-6255
73 MARSHALL MEDICAL CENTER PLACERVILLECAPHYSICIAN ASSISTANT 154 82 0.2%
74 STANFORD HEALTH CARE STANFORDCADIAGNOSTIC RADIOLOGY 3039 79 0.2% (650) 723-4000
75 ASSOCIATES IN WOMENS HEALTH CARE ROSEVILLECAOBSTETRICS/GYNECOLOGY 7 76 0.2%
76 ACACIA FAMILY MEDICAL GROUP SALINASCAFAMILY PRACTICE 5 72 0.2% (831) 663-0123
77 CAPITAL OB/GYN, INC. SACRAMENTOCAOBSTETRICS/GYNECOLOGY 11 69 0.2% (916) 920-2082
78 PERMANENTE MEDICAL GROUP INC SANTA CLARACAINTERNAL MEDICINE 10890 67 0.1% (408) 851-1000
79 MID-ATLANTIC WOMENS CARE PLC NORFOLKCAOBSTETRICS/GYNECOLOGY 153 67 0.1% (757) 466-6350
80 SAN DIEGO WOMENS HEALTH INC LA JOLLACAOBSTETRICS/GYNECOLOGY 3 65 0.1% (858) 677-0777
81 LE, NGUYEN, TRAM, NGUYEN AND TRAN MEDICAL CORPORATION WESTMINSTERCAINTERNAL MEDICINE 4 64 0.1% (714) 531-2220
82 TORMED WOMENS MEDICAL GROUP INC TORRANCECAOBSTETRICS/GYNECOLOGY 2 63 0.1% (310) 326-5150
83 LIZELLEN LA FOLLETTE MD INC GREENBRAECAOBSTETRICS/GYNECOLOGY 2 61 0.1% (415) 461-1949
84 HEALTHCARE PARTNERS AFFILIATES MEDICAL GROUP CARSONCAINTERNAL MEDICINE 771 61 0.1% (310) 830-9706
85 BARTON MEDICAL FOUNDATION SOUTH LAKE TAHOECAPHYSICIAN ASSISTANT 95 60 0.1% (530) 539-6620
86 OB-GYN PLACE A MEDICAL CORPORATION ARCADIACAOBSTETRICS/GYNECOLOGY 2 58 0.1% (626) 358-1970
87 RIVERWAY MEDICAL GROUP A MEDICAL CORPORATION VISALIACANURSE PRACTITIONER 8 58 0.1% (559) 372-7390
88 CARE FOR WOMENS MEDICAL GROUP INC UPLANDCAOBSTETRICS/GYNECOLOGY 4 58 0.1% (909) 355-7855
89 KANWAR T MAHAL, MD INC. FRESNOCAFAMILY PRACTICE 2 50 0.1% (559) 437-9100
90 CENTRAL COAST FAMILY CARE MEDICAL ASSOCIATES INC SANTA MARIACAFAMILY PRACTICE 9 50 0.1% (805) 938-7444
91 EMILY REKUC DO INC LA QUINTACAOBSTETRICS/GYNECOLOGY 3 49 0.1% (760) 777-4067
92 BOLSA MEDICAL GROUP WESTMINSTERCAFAMILY PRACTICE 15 49 0.1% (714) 531-2091
93 RITA R ELLITHORPE MD INC TUSTINCAPHYSICIAN ASSISTANT 6 48 0.1% (714) 544-1521
94 NEW YORK UNIVERSITY NEW YORKCADIAGNOSTIC RADIOLOGY 5704 47 0.1% (212) 263-9700
95 CENTRAL CALIFORNIA FACULTY MEDICAL GROUP INC FRESNOCAEMERGENCY MEDICINE 252 46 0.1% (559) 459-6000
96 CALIFORNIA CARDIOVASCULAR CONSULTANTS FREMONTCAINTERNAL MEDICINE 29 45 0.1% (510) 796-0222
97 SHOBHANA GANDHI MD INC LOS ANGELESCAOBSTETRICS/GYNECOLOGY 3 45 0.1% (323) 953-8821
98 WYNN MEDICAL CENTER INTERNAL MEDICINE PASADENA PASADENACAINTERNAL MEDICINE 2 44 0.1% (626) 356-4000
99 PARAGON PHYSICAL THERAPY AND REHAB LLC BULLHEAD CITYCAORTHOPEDIC SURGERY 82 44 0.1%
100 MODERN WOMENS CARE TORRANCECAOBSTETRICS/GYNECOLOGY 3 41 0.1% 3105395060109

*Share of California's disclosed Medicare-FFS services for G0101, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing G0101 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 →