UNIVERSITY SURGEONS OF ORANGE A MEDICAL GROUP
GENERAL SURGERY · ORANGE, CA · 120 providers · hospital-affiliated · (714) 634-5549
Provider volumes, all codes · CY2024
Group overview · all codes · CY2024
All figures are attributed (single-group clinicians only) and disclosed (CMS suppresses fewer-than-11-beneficiary rows) Medicare Part B fee-for-service — a subset, never complete totals. Percentile and peer figures are billed-volume positions, not statements about care. See Methods & Sources.
| NPI | Provider | Credentials | Type | City | St | Services (all codes) |
|---|---|---|---|---|---|---|
| 1457679656 | Ichii, Hirohito | MD, PHD | General Surgery | Orange | CA | premium |
| 1316027444 | Lane, Karen T | MD | General Surgery | Orange | CA | premium |
| 1851736938 | Tran, Thuy | M.D. | Surgical Oncology | Orange | CA | premium |
| 1740487347 | Kuo, Isabella | M.D. | General Surgery | Orange | CA | premium |
| 1326195082 | Redfield, Robert | MD | General Surgery | Orange | CA | premium |
| 1336328194 | Yamamoto, Maki | MD | General Surgery | Orange | CA | premium |
| 1164429015 | Fujitani, Roy | M.D. | General Surgery | Orange | CA | premium |
| 1467532630 | Imagawa, David K | MD | General Surgery | Orange | CA | premium |
| 1073651238 | Burton, Kimberly | PA-C | Physician Assistant | Orange | CA | premium |
| 1851658710 | Papageorge, Christina | M.D. | General Surgery | Orange | CA | premium |
| 1164786521 | Chen, Samuel | M.D. | Vascular Surgery | Orange | CA | premium |
| 1174723159 | Nahmias, Jeffry | M.D. | General Surgery | Orange | CA | premium |
| 1952578262 | Kabutey, Nii-Kabu | MD | General Surgery | Orange | CA | premium |
| 1538579578 | Grigorian, Areg | MD | General Surgery | Orange | CA | premium |
| 1336425644 | To, William | PA | Physician Assistant | Garden Grove | CA | premium |
| 1073516860 | Patel, Sheela | MD | Vascular Surgery | San Francisco | CA | premium |
| 1932346004 | Schubl, Sebastian | M.D. | General Surgery | Orange | CA | premium |
| 1073992624 | Vilchez, Valery | M.D. | Colorectal Surgery (Proctology) | Orange | CA | premium |
| 1912302852 | Olson, Sheryl | Nurse Practitioner | Orange | CA | premium | |
| 1730356353 | Borazjani, Boris | M.D.,M.P.H. | General Surgery | Mission Hills | CA | premium |
| 1417574559 | Valadez, Hector | Physician Assistant | Orange | CA | premium | |
| 1942458013 | Burruss, Sigrid | M.D. | General Surgery | Orange | CA | premium |
| 1720168867 | Dolich, Matthew | MD | General Surgery | Orange | CA | premium |
| 1174633127 | Mills, Steven | MD | Colorectal Surgery (Proctology) | Long Beach | CA | premium |
| 1164624839 | Barrios, Cristobal | MD | General Surgery | Orange | CA | premium |
| 1922188069 | Lekawa, Michael | MD | Emergency Medicine | Orange | CA | premium |
| 1780983411 | Lin, Erin | D.O. | General Surgery | Orange | CA | premium |
| 1407847775 | Jeng, James | MD | General Surgery | Orange | CA | premium |
| 1154577328 | Daly, Shaun | M.D. | General Surgery | Orange | CA | premium |
| 1114181534 | Kansal, Kari | M.D. | Surgical Oncology | Boston | MA | premium |
| 1407020951 | Chin, Theresa | M.D. | General Surgery | Orange | CA | premium |
| 1982845574 | Shanmugan, Skandan | MD | Colorectal Surgery (Proctology) | Orange | CA | premium |
| 1417104993 | Qazi, Alliya | M.D. | General Surgery | Orange | CA | premium |
| 1609060441 | Shere, Varsha | N.P. | Nurse Practitioner | Orange | CA | premium |
| 1447564604 | Swentek, Lourdes | MD | General Surgery | Orange | CA | premium |
| 1124664636 | Wright, Lionel | PA-C | Physician Assistant | Orange | CA | premium |
| 1245594498 | Mao, Melissa | MD | Surgical Oncology | Orange | CA | premium |
| 1699055988 | Chau, Anthony | M.D. | Vascular Surgery | Orange | CA | premium |
| 1154646537 | Jutric, Zeljka | MD | General Surgery | Seattle | WA | premium |
| 1770631715 | Smith, Brian | MD | General Surgery | Orange | CA | premium |
| 1376779066 | Williams, Kerry | BC-FNP | Nurse Practitioner | Orange | CA | premium |
| 1902163710 | Whealon, Matthew | MD | General Surgery | Colton | CA | premium |
| 1902448475 | Tran, Long | Physician Assistant | Boston | MA | premium | |
| 1861673998 | Hinojosa, Marcelo | MD | General Surgery | Orange | CA | premium |
| 1487010658 | Shin, Jeong Yeon | FNP | Nurse Practitioner | Orange | CA | premium |
| 1487734653 | Nguyen, Ninh | MD | General Surgery | Orange | CA | premium |
| 1164539953 | Joe, Victor | MD | General Surgery | Orange | CA | premium |
| 1801195029 | Keshava, Hari | MD | General Surgery | Orange | CA | premium |
| 1912016262 | Morchi, Raveendra | MD | Cardiac Surgery | Orange | CA | premium |
| 1710088752 | Smith, Mark | M.D. | General Surgery | Orange | CA | premium |
| 1083893564 | Kong, Allen | MD | General Surgery | Orange | CA | premium |
| 1801872593 | Mahtabifard, Ali | MD | Thoracic Surgery | Orange | CA | premium |
| 1811244312 | O'leary, Michael | MD | Surgical Oncology | Loma Linda | CA | premium |
| 1427442417 | Yong, Holly | M.D. | General Surgery | Orange | CA | premium |
| 1578721239 | Senthil, Maheswari | M.D. | Surgical Oncology | Duarte | CA | premium |
| 1598007882 | Sagebin, Fabio | M.D. | Cardiology | Rochester | NY | premium |
| 1013510825 | Yoshizuka, Toyen | PA-C | Physician Assistant | Orange | CA | premium |
| 1427175827 | Carmichael, Joseph | MD | General Surgery | Orange | CA | premium |
| 1427434174 | Fairbairn, Kelly | DO | Thoracic Surgery | Ventura | CA | premium |
| 1407368988 | Pallares, Andrea | AGACNP-BC | Nurse Practitioner | Orange | CA | premium |
| 1891267399 | Kim, Reina | NP | Nurse Practitioner | Orange | CA | premium |
| 1134685365 | Franco, Shannon | NP | Nurse Practitioner | Orange | CA | premium |
| 1134850704 | Kim, Ashley | NP | Nurse Practitioner | Orange | CA | premium |
| 1710207840 | Bagga, Uma · member of 2 groups | M.D. | General Surgery | Orange | CA | premium |
| 1164515995 | Chao, Jeffrey · member of 2 groups | MD | General Surgery | Orange | CA | premium |
| 1043606429 | Cornateanu, Randall · member of 3 groups | M.D. | General Surgery | Placentia | CA | premium |
| 1003979873 | Gadde, Kishore · member of 2 groups | M.D. | Psychiatry | Baton Rouge | LA | premium |
| 1609396555 | Jebbia, Mallory · member of 2 groups | MD | General Surgery | Orange | CA | premium |
| 1942577051 | Lewis, Michael · member of 2 groups | PA-C | Physician Assistant | Orange | CA | premium |
| 1851718605 | Lopez, Alfred · member of 2 groups | NURSE PRACTITIONER | Nurse Practitioner | West Hollywood | CA | premium |
| 1164656161 | Saquib, Syed · member of 2 groups | MD | General Surgery | Orange | CA | premium |
| 1316140049 | Shah, Ravi · member of 2 groups | D.O. | General Surgery | Yorba Linda | CA | premium |
| 1881666956 | Tadlock, Matthew · member of 3 groups | MD | Critical Care (Intensivists) | San Diego | CA | premium |
| 1386157642 | Truong, Annie · member of 2 groups | APRN | Nurse Practitioner | Orange | CA | premium |
| 1548604648 | Ventro, George · member of 2 groups | M.D. | General Surgery | San Diego | CA | premium |
Volumes are attributed to a group only for clinicians affiliated with exactly one group. Clinicians in several groups are listed ("member of N groups") but shown as "—" — their volume is not attributed to any single group. A "—" on a single-group clinician means CMS suppressed the figure (fewer than 11 beneficiaries), never zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average Medicare payment is the amount Medicare actually paid per service, weighted by service volume across office and facility settings. Where the roster is a single clinician, that clinician's service counts match the group's attributed volume shown on the ranked results, so they are shown here; the per-provider split across a larger roster is a premium feature. See Methods & Sources.