Providers
66
Locations
5
Specialties
12
Insurance Plans
23
About Regents Of The University Of California
Background and practice information
Regents of the University of California is a established group medical practice based in Orange, CA, with 66 affiliated healthcare providers practicing across 5 locations.
The practice brings together providers across multiple specialties, including family practice, internal medicine, critical care, and physician assistant. Its providers are in-network with 23 insurance plans, though coverage varies by individual provider and should be confirmed before scheduling.
Across its providers, the practice has a strong average Merit-based Incentive Payment System (MIPS) score of 91.2 out of 100, a quality measure published by the Centers for Medicare & Medicaid Services.
Practice Locations
5 locations
Regents Of The University Of CaliforniaPrimary
101 THE CITY DR S, Orange, CA 928683201
(714) 456-7002
Affiliations
Hospitals where providers at Regents Of The University Of California hold admitting privileges
Insurance Networks
Accepted insurance plans and networks
Regents Of The University Of California accepts 74 plans from 13 insurers, including Cigna, Aetna, UnitedHealthcare.
Source: CMS Transparency in Coverage filings (March 2026). Network participation may change — verify with the provider's office before scheduling.
Quality & Performance
Specialties at Regents Of The University Of California
Provider specialties represented at this practice
Healthcare Providers in Orange
65 providers practice here
Manoochehr Abadian Sharifabad, MD
Critical Care (intensivists)
Orange, CA
Sebo Amirkhanian-namagerdy, MD
Critical Care (intensivists)
Orange, CA
Raj Batra, MD
Critical Care (intensivists) · Telehealth
Orange, CA
Sudhir Kapoor, MD
Critical Care (intensivists)
Orange, CA
Imran Sharief, MD
Critical Care (intensivists)
Orange, CA
Rosalyn Amante, DO
Family Practice · Telehealth
Orange, CA
Thomas Azeizat, MD
Family Practice · Telehealth
Orange, CA
Karen Babel, MD
Family Practice · Telehealth
Orange, CA
Jason Berry, DO
Family Practice · Telehealth
Orange, CA
Janine Chamberlin, MD
Family Practice
Orange, CA
Regan Chan, DO
Family Practice · Telehealth
Orange, CA
Stephen Chang, MD
Family Practice · Telehealth
Orange, CA
Henry Cheng, MD
Family Practice · Telehealth
Orange, CA
Stanley Cho, MD
Family Practice · Telehealth
Orange, CA
Robert Doomun, DO
Family Practice · Telehealth
Orange, CA
Roxann Engle, DO
Family Practice · Telehealth
Orange, CA
Sara Etemad, MD
Family Practice · Telehealth
Orange, CA
Arlene Ing, DO
Family Practice · Telehealth
Orange, CA
David Jesse, MD
Family Practice
Orange, CA
Maria Kim, MD
Family Practice · Telehealth
Orange, CA
Susie Kim, MD
Family Practice
Orange, CA
Jung Lee, MD
Family Practice · Telehealth
Orange, CA
Samuel Lin, MD
Family Practice · Telehealth
Orange, CA
Gloria Lu, MD
Family Practice · Telehealth
Orange, CA
Frequently Asked Questions
Common questions about Regents Of The University Of California
How many providers are at Regents of the University of California?
Regents of the University of California has 66 affiliated healthcare providers across 5 locations. You can browse the full provider roster, with specialties and locations, on this page.
What specialties does Regents of the University of California offer?
The practice includes providers in family practice, internal medicine, critical care, and physician assistant, among others. Use the specialty filter on the provider list to find a specific type of provider.
What insurance does Regents of the University of California accept?
Providers at Regents of the University of California are collectively in-network with 23 insurance plans. Acceptance varies by individual provider, so confirm your specific plan with the office before your visit.
Does Regents of the University of California have a quality rating?
The practice's providers have an average MIPS quality score of 91.2 out of 100, based on Centers for Medicare & Medicaid Services data. MIPS measures performance across quality, cost, care coordination, and use of health technology.
Where is Regents of the University of California located?
Regents of the University of California's primary location is in Orange, CA, with 4 additional locations listed on this page. See the contact section for the full address and phone number.
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