Clinicians affiliated with University Surgeons Of Orange A Medical Group
116 clinicians on file with this group · most practice in Los Angeles-Long Beach-Anaheim, CA · PAC ID 6901705227
89 clinicians affiliated with University Surgeons Of Orange A Medical Group are in the 2024 Medicare Part B data, 64 of them physicians. Data years with affiliated clinicians: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.
Each clinician's exact figures are in their Physician Report, from their page; a specialty's figures in this market are in a Market Comparison. View sample report · Already purchased? Open your report
Affiliated clinicians by specialty, 2024
All specialties · General Surgery (43) · Nurse Practitioner (15) · Physician Assistant (10) · Surgical Oncology (7) · Vascular Surgery (4) · Colorectal Surgery (Proctology) (3) · Thoracic Surgery (3) · Cardiac Surgery (1) · Cardiology (1) · Emergency Medicine (1) · Psychiatry (1)
Specialty links go to the specialty in Los Angeles-Long Beach-Anaheim, CA.
Clinicians affiliated with University Surgeons Of Orange A Medical Group, 2024
Alphabetical by last name; 89.
| Name | Specialty | City |
|---|---|---|
| Aileen L Andaya, NP | Nurse Practitioner | Orange, CA |
| Reed Ayabe, M.D. | General Surgery | Orange, CA |
| Ezioma Azubuike, N.P | Nurse Practitioner | Orange, CA |
| Uma A Bagga, M.D. | General Surgery | Orange, CA |
| Cristobal Barrios, MD | General Surgery | Orange, CA |
| Boris H Borazjani, M.D.,M.P.H. | General Surgery | Mission Hills, CA |
| Sayuri Brady, NP | Nurse Practitioner | Orange, CA |
| Sigrid K Burruss, M.D. | General Surgery | Orange, CA |
| Kimberly Burton, PA-C | Physician Assistant | Orange, CA |
| Joseph C Carmichael, MD | General Surgery | Orange, CA |
| Anthony H Chau, M.D. | Vascular Surgery | Orange, CA |
| Samuel L Chen, M.D. | Vascular Surgery | Orange, CA |
| Theresa Chin, M.D. | General Surgery | Orange, CA |
| Randall Cornateanu, M.D. | General Surgery | Placentia, CA |
| Shaun C Daly, M.D. | General Surgery | Orange, CA |
| Matthew Dolich, MD | General Surgery | Orange, CA |
| Siwei Dong, DO | Vascular Surgery | Orange, CA |
| Oliver S Eng, M.D. | Surgical Oncology | Orange, CA |
| Anna Ruth T Escudero, FNP-C | Nurse Practitioner | Orange, CA |
| Kelly Fairbairn, DO | Thoracic Surgery | Ventura, CA |
| Alisan Fathalizadeh, M.D., M.P.H. | General Surgery | Orange, CA |
| Shannon E Franco, NP | Nurse Practitioner | Orange, CA |
| Roy M Fujitani, M.D. | General Surgery | Orange, CA |
| Kishore M Gadde, M.D. | Psychiatry | Baton Rouge, LA |
| Areg Grigorian, MD | General Surgery | Orange, CA |
| Marcelo W Hinojosa, MD | General Surgery | Orange, CA |
| Hirohito Ichii, MD, PHD | General Surgery | Orange, CA |
| David K Imagawa, MD | General Surgery | Orange, CA |
| Mallory Jebbia, MD | General Surgery | Orange, CA |
| James C Jeng, MD | General Surgery | Orange, CA |
| Victor Joe, MD | General Surgery | Orange, CA |
| Zeljka Jutric, MD | General Surgery | Seattle, WA |
| Nii-Kabu Kabutey, MD | General Surgery | Orange, CA |
| Kari J Kansal, M.D. | Surgical Oncology | Boston, MA |
| Hari B Keshava, MD | General Surgery | Orange, CA |
| Ashley L Kim, NP | Nurse Practitioner | Orange, CA |
| Reina N Kim, NP | Nurse Practitioner | Orange, CA |
| Allen P Kong, MD | General Surgery | Orange, CA |
| Isabella J Kuo, M.D. | General Surgery | Orange, CA |
| Jana N Lada, PA-C | Physician Assistant | Orange, CA |
| Karen T Lane, MD | General Surgery | Orange, CA |
| Michael Lekawa, MD | Emergency Medicine | Orange, CA |
| Michael D Lewis, PA-C | Physician Assistant | Orange, CA |
| Erin H Lin, D.O. | General Surgery | Orange, CA |
| Alfred S Lopez, NURSE PRACTITIONER | Nurse Practitioner | West Hollywood, CA |
| Alexandra Lopez-Aguiar, M.D. | Surgical Oncology | Miami, FL |
| Fides May Magtoto | Nurse Practitioner | Orange, CA |
| Ali Mahtabifard, MD | Thoracic Surgery | Orange, CA |
| Melissa L Mao, MD | Surgical Oncology | Orange, CA |
| Steven D Mills, MD | Colorectal Surgery (Proctology) | Long Beach, CA |
| Raveendra S Morchi, MD | Cardiac Surgery | Orange, CA |
| Jeffry T Nahmias, M.D. | General Surgery | Orange, CA |
| Kathy T Nguyen, AGACNP-BC | Nurse Practitioner | Mission Viejo, CA |
| Ninh Nguyen, MD | General Surgery | Orange, CA |
| Michael O'Leary, MD | Surgical Oncology | Loma Linda, CA |
| Sheryl L Olson | Nurse Practitioner | Orange, CA |
| Michael D O'Reilly, PA-C | Physician Assistant | Orange, CA |
| Andrea C Pallares, AGACNP-BC | Nurse Practitioner | Orange, CA |
| Christina M Papageorge, M.D. | General Surgery | Orange, CA |
| Sheela T Patel, MD | Vascular Surgery | San Francisco, CA |
| Alliya S Qazi, M.D. | General Surgery | Orange, CA |
| Robert R Redfield, MD | General Surgery | Orange, CA |
| Fabio M Sagebin, M.D. | Cardiology | Rochester, NY |
| Syed Saquib, MD | General Surgery | Orange, CA |
| Sebastian D Schubl, M.D. | General Surgery | Orange, CA |
| Maheswari Senthil, M.D. | Surgical Oncology | Duarte, CA |
| Ravi B Shah, D.O. | General Surgery | Yorba Linda, CA |
| Skandan Shanmugan, MD | Colorectal Surgery (Proctology) | Orange, CA |
| Jeong Yeon Shin, FNP | Nurse Practitioner | Orange, CA |
| Brian R Smith, MD | General Surgery | Orange, CA |
| Mark A Smith, M.D. | General Surgery | Orange, CA |
| Lourdes Swentek, MD | General Surgery | Orange, CA |
| Olivia Tirado, PA | Physician Assistant | Orange, CA |
| William To, PA | Physician Assistant | Garden Grove, CA |
| Long Tran | Physician Assistant | Boston, MA |
| Thuy Tran, M.D. | Surgical Oncology | Orange, CA |
| Annie Truong, APRN | Nurse Practitioner | Orange, CA |
| Hector D Valadez | Physician Assistant | Orange, CA |
| George J Ventro, M.D. | General Surgery | San Diego, CA |
| Valery Vilchez, M.D. | Colorectal Surgery (Proctology) | Orange, CA |
| Annie Wang, M.D. | General Surgery | Orange, CA |
| Matthew D Whealon, MD | General Surgery | Colton, CA |
| Kerry M Williams, BC-FNP | Nurse Practitioner | Orange, CA |
| Katherine L Wood, MD | Thoracic Surgery | Newark, NJ |
| Lionel Wright, PA-C | Physician Assistant | Orange, CA |
| Maki Yamamoto, MD | General Surgery | Orange, CA |
| Holly M Yong, M.D. | General Surgery | Orange, CA |
| Toyen Yoshizuka, PA-C | Physician Assistant | Orange, CA |
| Catherine Zhu, M.D. | General Surgery | Orange, CA |
Practice locations
Listed practice locations in California.
Source: CMS Doctors and Clinicians National Downloadable File, snapshot October 2, 2026.
Membership comes from the CMS Doctors and Clinicians file. CMS does not publish an end-of-year archive of it, so the current snapshot is applied to every data year. A clinician affiliated with several groups or hospitals appears on each of their pages. How group pages are built · Limitations