Providers
47
Locations
1
Specialties
4
Insurance Plans
29
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 47 affiliated healthcare providers.
The practice brings together providers across multiple specialties, including orthopedic surgery, physician assistant, nurse practitioner, and hand surgery. Its providers are in-network with 29 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
1 location
Regents Of The University Of CaliforniaPrimary
101 THE CITY DR S, Orange, CA 928683201
(714) 456-7004
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 63 plans from 10 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
47 providers practice here
Jesse Kaplan, MD
Hand Surgery
Orange, CA
Tatiana Jimenez, NP
Nurse Practitioner
Orange, CA
William Saba, NP
Nurse Practitioner
Orange, CA
Melissa Albersheim, MD
Orthopedic Surgery
Orange, CA
Nitin Bhatia, MD
Orthopedic Surgery · Telehealth
Orange, CA
Ryan Digiovanni, MD
Orthopedic Surgery · Telehealth
Orange, CA
David Downs, MD
Orthopedic Surgery
Orange, CA
Amanda Goldin, MD
Orthopedic Surgery · Telehealth
Orange, CA
Justin Haghverdian, MD
Orthopedic Surgery
Orange, CA
Sohaib Hashmi, MD
Orthopedic Surgery · Telehealth
Orange, CA
Jonah Hebert Davies, MD
Orthopedic Surgery
Orange, CA
Jason Horowitz, MD
Orthopedic Surgery
Orange, CA
Peter Hsiue, MD
Orthopedic Surgery
Orange, CA
Andrew Hsu, MD
Orthopedic Surgery
Orange, CA
Tyler Johnston, MD
Orthopedic Surgery
Orange, CA
James Learned, MD
Orthopedic Surgery
Orange, CA
Yu-po Lee, MD
Orthopedic Surgery · Telehealth
Orange, CA
Philip Lim, MD
Orthopedic Surgery
Orange, CA
William Mcmaster, MD
Orthopedic Surgery
Orange, CA
Emily Mills, MD
Orthopedic Surgery · Telehealth
Orange, CA
Alexander Nazareth, MD
Orthopedic Surgery
Orange, CA
Naudereh Noori, MD
Orthopedic Surgery
Orange, CA
Don Park, MD
Orthopedic Surgery · Telehealth
Orange, CA
Gregory Rafijah, MD
Orthopedic Surgery
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 47 affiliated healthcare providers. 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 orthopedic surgery, physician assistant, nurse practitioner, and hand surgery. 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 29 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. See the contact section for the full address and phone number.
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