Who bills the most Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308) to Medicare in California?
Medicare Part B FFS · CY2024 · as published by CMS394 physician groups billed Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308) to Medicare fee-for-service in California in 2024; the top five named groups hold 24% of that volume, and independent (non-hospital-affiliated) groups deliver 4%.
99308 — Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more · 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).
Medicare fee-for-service covers 49% of Medicare in California; Medicare Advantage penetration 45% → 51% since 2020.
| # | Physician group | City | St | Specialty | Providers | 99308 svcs | Share* | Phone |
|---|---|---|---|---|---|---|---|---|
| 1 | ORCA REHAB INC | FULLERTON | CA | NURSE PRACTITIONER | 17 | 40,289 | 3.4% | (714) 871-3280 |
| 2 | OCEANSIDE MEDICAL GROUP A MEDICAL CORPORATION | SANTA MONICA | CA | NURSE PRACTITIONER | 17 | 25,599 | 2.2% | (310) 993-4103 |
| 3 | INTEGRATIVE SPORTS AND SPINE INC | IRVINE | CA | PHYSICAL MEDICINE AND REHABILITATION | 24 | 23,225 | 2.0% | (562) 997-2172 |
| 4 | SHARWIN TAFAZOLI INC | CULVER CITY | CA | NURSE PRACTITIONER | 47 | 22,360 | 1.9% | (310) 836-7000 |
| 5 | DAVID TAFTIAN DO INC | RESEDA | CA | NURSE PRACTITIONER | 20 | 21,071 | 1.8% | (818) 458-5597 |
| 6 | INTEGRATED REHAB CONSULTANTS CALIFORNIA INC | LOS ANGELES | CA | PHYSICAL MEDICINE AND REHABILITATION | 37 | 19,919 | 1.7% | (312) 635-0973 |
| 7 | QUALITY CARE SOLUTION INC | SAN JOSE | CA | NURSE PRACTITIONER | 11 | 13,748 | 1.2% | (832) 618-8479 |
| 8 | ROBERT MARRIOTT MEDICAL CORP | IRVINE | CA | NURSE PRACTITIONER | 61 | 9,623 | 0.8% | (949) 854-9500 |
| 9 | ADVANCED LUNG CENTER MEDICAL GROUP INC. | INGLEWOOD | CA | NURSE PRACTITIONER | 8 | 9,408 | 0.8% | (310) 275-7575 |
| 10 | SKILLED FACILITY HEALTH CARE SOLUTIONS INC | RICHWOOD | CA | GENERAL SURGERY | 57 | 8,837 | 0.8% | (979) 265-4794 |
| 11 | WEST COAST HEALTH AND REHAB PC | SAN DIEGO | CA | NURSE PRACTITIONER | 25 | 8,541 | 0.7% | (201) 308-8995 |
| 12 | PRO CARE MEDICAL GROUP INC | CONCORD | CA | INTERNAL MEDICINE | 2 | 6,794 | 0.6% | (925) 322-3442 |
| 13 | WILLIAM N BICHAI MD INC. | BAKERSFIELD | CA | NEPHROLOGY | 2 | 6,729 | 0.6% | (661) 327-8000 |
| 14 | SINU-CLEAR INC | MONTCLAIR | CA | NURSE PRACTITIONER | 2 | 6,618 | 0.6% | (909) 621-4751 |
| 15 | ACCESS COMMUNITY HEALTH CENTER | SANTA ANA | CA | NURSE PRACTITIONER | 28 | 6,405 | 0.5% | (714) 352-5800 |
| 16 | WOUND MD PC | EL CAJON | CA | PHYSICIAN ASSISTANT | 14 | 6,280 | 0.5% | (216) 273-9800 |
| 17 | ALL INCLUSIVE MEDICAL SERVICES INC | CARMICHAEL | CA | NURSE PRACTITIONER | 20 | 5,960 | 0.5% | 9164149055100 |
| 18 | KARPUS MEDICAL GROUP INC | WOODLAND HILLS | CA | NURSE PRACTITIONER | 5 | 5,481 | 0.5% | (818) 883-9000 |
| 19 | SHRIKANT TAMHANE DO INC | GARDENA | CA | NURSE PRACTITIONER | 5 | 5,449 | 0.5% | (310) 834-5388 |
| 20 | COMMUNITY HEALTH CENTERS OF AMERICA | MARIPOSA | CA | NURSE PRACTITIONER | 106 | 5,250 | 0.4% | (209) 966-2344 |
| 21 | TOLWIN PSYCHIATRIC MEDICAL GROUP INC | CULVER CITY | CA | NURSE PRACTITIONER | 12 | 5,111 | 0.4% | (310) 280-9670 |
| 22 | POST ACUTE REHABILITATION PHYSICIANS LLC | SAN RAMON | CA | NURSE PRACTITIONER | 39 | 5,042 | 0.4% | (801) 215-9309 |
| 23 | ABRAHAM ISHAAYA M D A PROFESSIONAL CORPORATION | LOS ANGELES | CA | INTERNAL MEDICINE | 2 | 4,892 | 0.4% | — |
| 24 | ADVANTAGE NEUROPSYCHIATRIC ASSOC | ORANGE | CA | NURSE PRACTITIONER | 16 | 4,864 | 0.4% | (714) 633-4300 |
| 25 | SNF WOUND CARE | LOS ANGELES | CA | NURSE PRACTITIONER | 33 | 4,719 | 0.4% | (310) 270-6181 |
| 26 | ACN MEDICAL GROUP INC | MILLBRAE | CA | INTERNAL MEDICINE | 2 | 4,648 | 0.4% | (510) 306-4721 |
| 27 | HARBOR COMPREHENSIVE HEALTH INC | WILMINGTON | CA | ORTHOPEDIC SURGERY | 3 | 4,610 | 0.4% | (310) 830-0863 |
| 28 | J M GEISS DO APC | SANTA ANA | CA | NURSE PRACTITIONER | 156 | 4,576 | 0.4% | (855) 434-7763 |
| 29 | MEMORY CHECK PSYCHOLOGICAL SERVICES, A PROFESSIONAL CORPORATION | CARLSBAD | CA | CLINICAL PSYCHOLOGIST | 82 | 4,492 | 0.4% | (888) 515-3834 |
| 30 | GURPREET S DHUGGA MEDICAL CORPORATION | FAIRFIELD | CA | NURSE PRACTITIONER | 5 | 4,382 | 0.4% | (707) 864-1056 |
| 31 | INFUSION AND CLINICAL SERVICES INC | BAKERSFIELD | CA | NURSE PRACTITIONER | 39 | 4,347 | 0.4% | (661) 215-7500 |
| 32 | MING-WEI WU INC | BREA | CA | NURSE PRACTITIONER | 38 | 4,224 | 0.4% | 88843488806 |
| 33 | EL-BERSHAWI MEDICAL CORP | RIVERSIDE | CA | CRITICAL CARE (INTENSIVISTS) | 43 | 4,150 | 0.4% | (951) 781-3672 |
| 34 | ST. JOHN'S COMMUNITY HEALTH | LOS ANGELES | CA | NURSE PRACTITIONER | 140 | 3,941 | 0.3% | (323) 541-1411 |
| 35 | GALEN INPATIENT PHYSICIANS PC | PENSACOLA | CA | HOSPITALIST | 1012 | 3,900 | 0.3% | (850) 416-7000 |
| 36 | ALEXANDER Y CHAN, MD INC | TURLOCK | CA | NURSE PRACTITIONER | 3 | 3,830 | 0.3% | (209) 632-7577 |
| 37 | REHABILITATION ASSOCIATES PTR | LONG BEACH | CA | PHYSICAL MEDICINE AND REHABILITATION | 7 | 3,682 | 0.3% | (562) 424-8111 |
| 38 | OMAR OSMAN PRACTICE, LLC | SAN DIEGO | CA | NURSE PRACTITIONER | 38 | 3,538 | 0.3% | (858) 259-2222 |
| 39 | RONALD J PHILIPP DO A PROF CORP | LONG BEACH | CA | FAMILY PRACTICE | 2 | 3,530 | 0.3% | (562) 498-8000 |
| 40 | SANI AND ESHAGHIAN MD INC | NORTHRIDGE | CA | INTERNAL MEDICINE | 4 | 3,367 | 0.3% | (844) 428-5864 |
| 41 | CALIFORNIA WOUND HEALING MEDICAL GROUP INC. | ALHAMBRA | CA | NURSE PRACTITIONER | 14 | 3,342 | 0.3% | (323) 264-7796 |
| 42 | ROSSMOOR MEDICAL ASSOCIATES INC | WALNUT CREEK | CA | INTERNAL MEDICINE | 5 | 3,167 | 0.3% | (925) 933-1210 |
| 43 | FUTURE HEALTH CENTER INC | REDLANDS | CA | NURSE PRACTITIONER | 4 | 3,093 | 0.3% | (909) 493-5859 |
| 44 | HGRT MEDICAL GROUP INC | SAN JUAN CAPISTRANO | CA | INTERNAL MEDICINE | 3 | 3,056 | 0.3% | (949) 248-8855 |
| 45 | FOOT AND ANKLE DOCTORS INC A PROFESSIONAL CORPORATION | BEVERLY HILLS | CA | PODIATRY | 9 | 3,011 | 0.3% | (310) 652-3668 |
| 46 | NOEL SERRANO MD PC | OAKLAND | CA | INTERNAL MEDICINE | 8 | 2,975 | 0.3% | (707) 535-9279 |
| 47 | DZUNG TRINH MD INC | FRESNO | CA | INTERNAL MEDICINE | 4 | 2,857 | 0.2% | (559) 550-4344 |
| 48 | RAMIN GANJIANPOUR MD INC | MISSION HILLS | CA | PHYSICIAN ASSISTANT | 4 | 2,833 | 0.2% | (818) 361-0136 |
| 49 | MARY GESSNER-PETERSON MEDICAL GROUP INC | ALPINE | CA | PHYSICIAN ASSISTANT | 4 | 2,814 | 0.2% | (978) 994-1766 |
| 50 | SHASTA REGIONAL MEDICAL GROUP INC | REDDING | CA | NURSE PRACTITIONER | 39 | 2,779 | 0.2% | (530) 605-4260 |
| 51 | JOHN MUIR PHYSICIAN NETWORK | WALNUT CREEK | CA | FAMILY PRACTICE | 489 | 2,688 | 0.2% | (925) 296-9720 |
| 52 | HARDISON MEDICAL CORPORATION | RANCHO SANTA FE | CA | NURSE PRACTITIONER | 11 | 2,616 | 0.2% | (858) 771-1349 |
| 53 | ARAM HARIJAN MD PC | LA MESA | CA | NURSE PRACTITIONER | 8 | 2,564 | 0.2% | (858) 717-5029 |
| 54 | HERITAGE HEALTH CENTER INC | JACKSON | CA | NURSE PRACTITIONER | 4 | 2,523 | 0.2% | (209) 223-7040 |
| 55 | MERCED HOSPITALIST MEDICAL GROUP INC | MERCED | CA | INTERNAL MEDICINE | 41 | 2,491 | 0.2% | (209) 564-5000 |
| 56 | GERIATRICS CARE SOLUTION INC | SAN FRANCISCO | CA | NURSE PRACTITIONER | 7 | 2,430 | 0.2% | (617) 510-7972 |
| 57 | SNF SPECIALISTS MEDICAL CORPORATION | FAIRFIELD | CA | NURSE PRACTITIONER | 25 | 2,429 | 0.2% | (800) 973-1540 |
| 58 | PACIFIC COAST PSYCHIATRIC ASSOCIATES INC | SAN DIEGO | CA | MARRIAGE AND FAMILY THERAPIST | 573 | 2,384 | 0.2% | (858) 279-1223 |
| 59 | DEREK NGUYEN MD INC | RIVERSIDE | CA | NURSE PRACTITIONER | 4 | 2,331 | 0.2% | (951) 683-6830 |
| 60 | MID-VALLEY PULMONARY MEDICAL GROUP, INC. | SHERMAN OAKS | CA | PULMONARY DISEASE | 10 | 2,317 | 0.2% | (818) 325-0200 |
| 61 | HOSPITALIST CORPORATION OF INLAND EMPIRE | POMONA | CA | INTERNAL MEDICINE | 24 | 2,232 | 0.2% | (909) 630-7158 |
| 62 | MOUNTAIN COMMUNITIES HEALTHCARE DISTRICT | WEAVERVILLE | CA | DIAGNOSTIC RADIOLOGY | 38 | 2,127 | 0.2% | (530) 623-5541 |
| 63 | FAMILY PRACTICE ASSOCIATES OF CARSON MEDICAL GROUP INC | CARSON | CA | INTERNAL MEDICINE | 3 | 2,126 | 0.2% | (310) 233-3228 |
| 64 | JS WOUND CARE INC | NEWHALL | CA | PHYSICIAN ASSISTANT | 4 | 2,089 | 0.2% | (714) 261-5181 |
| 65 | INPATIENT SPECIALISTS OF CALIFORNIA PC | SAN BERNARDINO | CA | INTERNAL MEDICINE | 370 | 2,033 | 0.2% | (909) 883-8711 |
| 66 | PROVIDENCE MEDICAL INSTITUTE | TORRANCE | CA | INTERNAL MEDICINE | 339 | 1,997 | 0.2% | (310) 303-7496 |
| 67 | IMPERIAL VALLEY FAMILY CARE MEDICAL GROUP A P C | EL CENTRO | CA | FAMILY PRACTICE | 23 | 1,981 | 0.2% | (760) 353-6363 |
| 68 | CRESCENT WOUND CARE INC | MODESTO | CA | GENERAL SURGERY | 28 | 1,977 | 0.2% | (858) 967-3070 |
| 69 | DADOYAN BEHAVIORAL MEDICAL GROUP INC | SHERMAN OAKS | CA | NURSE PRACTITIONER | 8 | 1,966 | 0.2% | (818) 461-8911 |
| 70 | CHEST AND CRITICAL CARE CONSULTANTS A MEDICAL GROUP | TUSTIN | CA | INTERNAL MEDICINE | 69 | 1,960 | 0.2% | (714) 573-8200 |
| 71 | SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP | LOS ANGELES | CA | INTERNAL MEDICINE | 11157 | 1,920 | 0.2% | (800) 954-8000 |
| 72 | CALIFORNIA POST-ACUTE MEDICAL GROUP 1 INC | VALLEJO | CA | INTERNAL MEDICINE | 5 | 1,877 | 0.2% | (707) 644-7401 |
| 73 | PROVIDENCE MEDICAL FOUNDATION | FULLERTON | CA | PHYSICIAN ASSISTANT | 1455 | 1,871 | 0.2% | (714) 871-3006 |
| 74 | CALIFORNIA PULMONARY ASSOCIATES INC | UPLAND | CA | PULMONARY DISEASE | 7 | 1,841 | 0.2% | (626) 914-5219 |
| 75 | LIFELONG MEDICAL CARE | BERKELEY | CA | NURSE PRACTITIONER | 80 | 1,780 | 0.2% | (510) 981-4200 |
| 76 | SUTTER BAY MEDICAL FOUNDATION | PALO ALTO | CA | INTERNAL MEDICINE | 3716 | 1,722 | 0.1% | (415) 600-1020 |
| 77 | ORTHOPAEDIC SPECIALTY INSTITUTE MEDICAL GROUP OF ORANGE COUNTY | ORANGE | CA | PHYSICIAN ASSISTANT | 58 | 1,672 | 0.1% | (714) 634-4567 |
| 78 | PHILIP CHIOU MD INC | LONG BEACH | CA | PHYSICIAN ASSISTANT | 2 | 1,609 | 0.1% | (562) 933-1248 |
| 79 | PULMONARY MEDICAL CORPORATION | TARZANA | CA | CRITICAL CARE (INTENSIVISTS) | 2 | 1,605 | 0.1% | (818) 758-0020 |
| 80 | PATHWAY MEDICAL GROUP INC | GARDEN GROVE | CA | INTERNAL MEDICINE | 17 | 1,601 | 0.1% | (714) 636-9852 |
| 81 | IZUCHUKWU OKPARA MD INC | VALENCIA | CA | PHYSICIAN ASSISTANT | 51 | 1,593 | 0.1% | (213) 228-3538 |
| 82 | VOHRA WOUND PHYSICIANS OF CA PC | BELLFLOWER | CA | FAMILY PRACTICE | 4 | 1,560 | 0.1% | (562) 925-4252 |
| 83 | PANTEA FARHADI MD A MEDICAL CORPORATION | LOS ANGELES | CA | NURSE PRACTITIONER | 4 | 1,532 | 0.1% | (310) 890-7598 |
| 84 | CITY AND COUNTY OF SAN FRANCISCO | SAN FRANCISCO | CA | NURSE PRACTITIONER | 366 | 1,506 | 0.1% | — |
| 85 | PRODE P PASCUAL MD INC | WALNUT | CA | INTERNAL MEDICINE | 2 | 1,484 | 0.1% | (424) 789-4691 |
| 86 | NEW WORLD MULTISPECIALTY MEDICAL GROUP INC | LOS ANGELES | CA | NURSE PRACTITIONER | 4 | 1,478 | 0.1% | (213) 388-2229 |
| 87 | MICHAEL Y KARAPETIAN MD MEDICAL CLINIC INC | LOS ANGELES | CA | INTERNAL MEDICINE | 2 | 1,468 | 0.1% | (323) 913-9300 |
| 88 | ALTEA MEDICAL CALIFORNIA PC | EUREKA | CA | NURSE PRACTITIONER | 69 | 1,418 | 0.1% | (707) 445-3261 |
| 89 | MEHBOOB MAKHANI MD A PROFESSIONAL CORPORATION | NORTHRIDGE | CA | NURSE PRACTITIONER | 8 | 1,411 | 0.1% | (818) 717-8464 |
| 90 | SNF REHAB ONLY | VACAVILLE | CA | FAMILY PRACTICE | 5 | 1,402 | 0.1% | (707) 451-4111 |
| 91 | LONG TERM CARE MEDICAL GROUP, INC | FRESNO | CA | INTERNAL MEDICINE | 34 | 1,397 | 0.1% | (559) 450-3000 |
| 92 | DIGNITY HEALTH MEDICAL FOUNDATION | FOLSOM | CA | DIAGNOSTIC RADIOLOGY | 1197 | 1,395 | 0.1% | (916) 983-7476 |
| 93 | WILLIAM GILLESPIE AND ASSOCIATES INC | GLENDORA | CA | NURSE PRACTITIONER | 16 | 1,377 | 0.1% | (626) 914-1980 |
| 94 | PIH HEALTH PHYSICIANS | WHITTIER | CA | INTERNAL MEDICINE | 606 | 1,259 | 0.1% | (562) 698-0811 |
| 95 | DR JACOB AND ASSOCIATES INC | GLENDORA | CA | CLINICAL PSYCHOLOGIST | 9 | 1,231 | 0.1% | (626) 963-4467 |
| 96 | WEST COAST WOUND AND SKIN CARE INC | LYNWOOD | CA | FAMILY PRACTICE | 31 | 1,227 | 0.1% | (818) 856-9535 |
| 97 | CALIFORNIA WOUND AND HYPERBARIC SPECIALISTS INC | PLEASANT HILL | CA | NURSE PRACTITIONER | 4 | 1,211 | 0.1% | (510) 224-6556 |
| 98 | METICULOUS HEALTH CARE PC | VAN NUYS | CA | NURSE PRACTITIONER | 6 | 1,186 | 0.1% | (818) 901-7855 |
| 99 | TYRONE E SNIPES D O INTERNAL MEDICINE PRIMARY CARE INC | SAN LEANDRO | CA | NURSE PRACTITIONER | 3 | 1,096 | 0.1% | 5104449460321 |
| 100 | RENEW BEHAVORIAL HEALTH INC | LONG BEACH | CA | NURSE PRACTITIONER | 4 | 1,070 | 0.1% | (562) 637-3143 |
*Share of California's disclosed Medicare-FFS services for 99308, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing 99308 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 →