Market
Riverside-San Bernardino-Ontario, CA
Specialties
Counties
Billing organizations
ACOs
10-Year Market Trend
| Year | Physicians | Billing Orgs | ACOs | 65+ Population | Physician Growth % | 65+ Population Growth % |
|---|---|---|---|---|---|---|
| 2014 | 3,745 | 1,784 | 103 | 482,450 | N/A | N/A |
| 2015 | 4,026 | 1,864 | 108 | 503,141 | +7.5% | +4.3% |
| 2016 | 4,405 | 1,951 | 108 | 524,697 | +9.4% | +4.3% |
| 2017 | 4,783 | 2,020 | 114 | 542,153 | +8.6% | +3.3% |
| 2018 | 5,115 | 2,087 | 121 | 561,952 | +6.9% | +3.7% |
| 2019 | 5,445 | 2,133 | 139 | 582,536 | +6.5% | +3.7% |
| 2020 | 5,655 | 2,170 | 150 | 602,407 | +3.9% | +3.4% |
| 2021 | 6,130 | 2,240 | 154 | 596,385 | +8.4% | -1% |
| 2022 | 6,714 | 2,313 | 168 | 619,089 | +9.5% | +3.8% |
| 2023 | 7,251 | 2,372 | 190 | 640,047 | +8% | +3.4% |
| 2024 | 7,921 | 2,417 | 206 | 659,872 | +9.2% | +3.1% |
Top Counties
Top Specialties
| Specialty | Physicians | % |
|---|---|---|
| Nurse practitioner | 1,346 | 10.7% |
| Internal medicine | 1,201 | 9.5% |
| Family practice | 1,201 | 9.5% |
| Physician assistant | 1,005 | 8% |
| Physical therapist (private practice) | 642 | 5.1% |
| Emergency medicine | 590 | 4.7% |
| Anesthesiology | 444 | 3.5% |
| Certified Registered Nurse Anesthetist (CRNA) | 326 | 2.6% |
| Marriage and Family Therapist | 316 | 2.5% |
| Optometrist | 301 | 2.4% |
Top Billing Organizations
| Billing Org NPI | Org Name | Physicians | % |
|---|---|---|---|
| 1689606196 | SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP | 1,251 | 9.9% |
| 1316979834 | SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP | 955 | 7.6% |
| 1013981554 | EISENHOWER MEDICAL CENTER | 454 | 3.6% |
| 1477503407 | FACULTY PHYSICIANS AND SURGEONS OF LLUSM | 361 | 2.9% |
| 1649503319 | BEAVER MEDICAL GROUP P C | 192 | 1.5% |
| 1730180415 | RIVERSIDE MEDICAL CLINIC, INC | 156 | 1.2% |
| 1366492399 | FACULTY PHYSICIANS AND SURGEONS OF LLUSM | 119 | 0.9% |
| 1275583205 | FACULTY PHYSICIANS AND SURGEONS OF LLUSM | 110 | 0.9% |
| 1265686109 | FACULTY PHYSICIANS AND SURGEONS OF LLUSM | 97 | 0.8% |
| 1598791600 | RANCHO FAMILY MEDICAL GROUP, INC. | 86 | 0.7% |
Top ACOs
| ACO ID | ACO Name | Physicians | % |
|---|---|---|---|
| A5045 | Optum California ACO | 464 | 3.7% |
| A4709 | CALIFORNIA CLINICAL PARTNERS ACO, LLC | 376 | 3% |
| A2342 | Health Connect Partners, LLC | 152 | 1.2% |
| A5483 | Collaborative ACO 30, LLC | 122 | 1% |
| A3799 | UC Irvine Health Accountable Care Organization | 82 | 0.7% |
| A5220 | Sound Physicians Long Term Care Management, LLC | 80 | 0.6% |
| A5192 | Lore Health ACO | 71 | 0.6% |
| D0215 | APA ACO Inc. | 39 | 0.3% |
| D0160 | Nivano Physicians, Inc. IPA | 36 | 0.3% |
| A2164 | CommonSpirit ACO I | 32 | 0.3% |
Top Physicians by Billing Paid Amount
| Physician | NPI | Specialty | Billing Paid Amount |
|---|---|---|---|
| Eric Robert Presser, M.D. | 1548279755 | Thoracic surgery | $42,203,307.02 |
| Akil Peter Simon, M.D. | 1598100877 | General surgery | $24,139,259.17 |
| Bryce D Beseth, M.D. | 1811929243 | General surgery | $17,775,608.80 |
| Luke Philip Dreisbach, M.D. | 1831109792 | Hematology/oncology | $16,035,429.00 |
| Michael Aaron Lalezarian | 1023245230 | Diagnostic Radiology | $15,101,625.64 |
| James Golden Joachim, MD | 1669570107 | Internal medicine | $11,978,133.77 |
| Jalal M. Badday, M.D. | 1013951870 | Internal medicine | $11,018,260.72 |
| Diya H Tantawi, MD, FACS | 1235372376 | General surgery | $10,803,577.97 |
| Qais Ayouby, MD | 1154884351 | Internal medicine | $9,041,077.81 |
| David Kay, DO | 1205254992 | Family practice | $7,689,195.50 |
| Amy Law, M.D. | 1861452054 | Hematology/oncology | $7,444,920.28 |
| Ronnie Nathan Dawood, M.D. | 1851593065 | Internal medicine | $6,589,942.02 |
| Evelyn Mendoza, M.D. | 1558368605 | Hematology/oncology | $6,391,108.38 |
| Jose Fernando Velasquez, MD | 1053897561 | Family practice | $5,976,332.87 |
| James Anthony Michail, M.D. | 1760879217 | Geriatric medicine | $5,713,520.18 |
| Kishore Sehgal, M.D. | 1689671034 | Hematology/oncology | $5,651,157.52 |
| Mark George Carmichael, MD | 1811973043 | Hematology/oncology | $5,469,299.28 |
| Stanley D Schinke, M.D. | 1649277088 | Hematology | $5,261,707.01 |
| Grant P. Williams, M.D. | 1013055128 | Interventional Pain Management (IPM) | $4,236,125.87 |
| Eric C Lee, M.D. | 1760481808 | Rheumatology | $4,090,624.33 |
| Ali Ardestani, MD, MSC | 1043553969 | Interventional radiology | $3,653,719.14 |
| Sameh Mikhail, M.D. | 1265849723 | Family practice | $3,568,210.46 |
| Richard C Jin, M.D. | 1053754366 | Internal medicine | $3,461,843.99 |
| Wyzscx Merfil Patacxil, M.D. | 1932543675 | General surgery | $3,347,107.27 |
| Pallvi Popli, M.D. | 1467860221 | Hematology/oncology | $3,296,174.42 |
| Camille M. Harrison, MD | 1366520140 | Ophthalmology | $2,838,447.22 |
| Nikhil C Patel, M.D. | 1053345926 | Interventional radiology | $2,819,265.33 |
| Clement K. Chan, M.D. | 1336131408 | Ophthalmology | $2,801,514.46 |
| Argin Haritounian, DO | 1275157828 | Sports Medicine | $2,732,597.15 |
| Brigid Maura Freyne, M.D. | 1689640856 | Rheumatology | $2,648,263.52 |
| Philip Brien Dreisbach, M.D. | 1972513919 | Hematology/oncology | $2,557,097.79 |
| Steven G Lin, M.D. | 1457343568 | Ophthalmology | $2,450,623.34 |
| Timothy Mark Jochen, MD | 1083748461 | Dermatology | $2,447,744.31 |
| Josephine Nguyen, MD | 1184781114 | Diagnostic Radiology | $2,288,862.39 |
| Ernie Gabriel Meth, M.D. | 1972548188 | Nuclear medicine | $2,239,630.62 |
| Thang Trung Le, MD | 1760559819 | Rheumatology | $2,227,096.12 |
| Justin Christopher Kerstetter, M.D. | 1629241054 | Pathology | $2,195,014.53 |
| Andro Sharobiem, M.D. | 1073711453 | Internal medicine | $2,165,291.98 |
| Tyler Lee Davis, M.D. | 1679734891 | Hematology/oncology | $2,113,906.37 |
| Suhail M Jafrey, MD | 1023137486 | Family practice | $2,038,543.64 |
| Samuel C. Kim, MD | 1720379100 | Ophthalmology | $1,917,536.86 |
| Michael Joseph Messina, MD | 1609073048 | Dermatology | $1,858,506.85 |
| Khushboo Gupta, MD | 1114420304 | Nuclear medicine | $1,771,530.13 |
| Antony Chunting Hou, M.D. | 1114926367 | Rheumatology | $1,759,215.59 |
| Eric M Sontz, M.D. | 1487614798 | Cardiology | $1,748,710.07 |
| Achala Bhaskara Doraiswamy, MD | 1912188152 | Hematology/oncology | $1,734,860.97 |
| Dikran Torian, M.D. | 1396790861 | Interventional Pain Management (IPM) | $1,709,301.20 |
| Bachir Khalil Younes, M.D. , M.P.H. | 1184661571 | Infectious disease | $1,704,860.81 |
| Francisco Vega, M.D. | 1538422704 | Vascular surgery | $1,700,080.73 |
| Michael A Samuel, M.D. | 1730175670 | Ophthalmology | $1,699,450.02 |
Cross-Market Comparison by Physician County Footprint
Nearby markets based on the counties represented by physician rows in this market, weighted by physician count.
| Market | State | Distance | Physicians | 65+ Population | Physician Growth % | 65+ Population Growth % |
|---|---|---|---|---|---|---|
| Riverside-San Bernardino-Ontario, CA | CA | Current | 12,585 | 659,872 | +9.2% | +3.1% |
| El Centro, CA | CA | 94 mi | 409 | 24,701 | +10.2% | +2.4% |
| San Diego-Chula Vista-Carlsbad, CA | CA | 94 mi | 14,349 | 507,734 | +8.7% | +2.8% |
| Anaheim-Santa Ana-Irvine, CA | CA | 105 mi | 12,390 | 514,824 | +7.9% | +3.2% |
| Los Angeles-Long Beach-Glendale, CA | CA | 124 mi | 36,237 | 1,487,700 | +7.9% | +2.7% |
Cross-Market Comparison by Official CBSA Geography
Nearby markets based on the official county composition of each CBSA or metropolitan division.
| Market | State | Distance | Physicians | 65+ Population | Physician Growth % | 65+ Population Growth % |
|---|---|---|---|---|---|---|
| Riverside-San Bernardino-Ontario, CA | CA | Current | 12,585 | 659,872 | +9.2% | +3.1% |
| San Diego-Chula Vista-Carlsbad, CA | CA | 96 mi | 14,349 | 507,734 | +8.7% | +2.8% |
| El Centro, CA | CA | 96 mi | 409 | 24,701 | +10.2% | +2.4% |
| Anaheim-Santa Ana-Irvine, CA | CA | 106 mi | 12,390 | 514,824 | +7.9% | +3.2% |
| Los Angeles-Long Beach-Glendale, CA | CA | 124 mi | 36,237 | 1,487,700 | +7.9% | +2.7% |
California Healthcare Context
Total Physicians in California144,761
Share of California Physicians8.7%
Total Markets in California28
Rank in California by Physicians#3 of 28
Riverside-San Bernardino-Ontario, CA accounts for 8.7% of physicians represented in California's market directory.
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