Providers
140
Locations
10
Specialties
12
Insurance Plans
37
About Regents Of The University Of California
Background and practice information
Regents of the University of California is a large multi-specialty medical practice based in Los Angeles, CA, with 140 affiliated healthcare providers practicing across 10 locations.
The practice brings together providers across multiple specialties, including orthopedic surgery, physician assistant, physical therapist in private practice, and podiatry. Its providers are in-network with 37 insurance plans, though coverage varies by individual provider and should be confirmed before scheduling.
Across its providers, the practice has a solid average Merit-based Incentive Payment System (MIPS) score of 77.6 out of 100, a quality measure published by the Centers for Medicare & Medicaid Services.
Practice Locations
10 locations
Regents Of The University Of CaliforniaPrimary
2655 1ST ST, Simi Valley, CA 930651580
(805) 578-8550
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 86 plans from 14 insurers, including Cigna, Aetna, Humana.
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 Simi Valley
24 providers practice here
Brianna Abadie, MD
Diagnostic Radiology
Simi Valley, CA
Gregory Applegate, MD
Diagnostic Radiology
Simi Valley, CA
Richard Spelts, MD
Family Practice · Telehealth
Simi Valley, CA
Paul Simic, MD
Hand Surgery · Telehealth
Simi Valley, CA
Romulus Ramos, NP
Nurse Practitioner · Telehealth
Simi Valley, CA
Michael Bahk, MD
Orthopedic Surgery · Telehealth
Simi Valley, CA
Harpreet Bawa, MD
Orthopedic Surgery · Telehealth
Simi Valley, CA
Deborah Castaneda, MD
Orthopedic Surgery · Telehealth
Simi Valley, CA
Connor Delman, MD
Orthopedic Surgery
Simi Valley, CA
Brian Grossman, MD
Orthopedic Surgery
Simi Valley, CA
Joseph Mendelis, MD
Orthopedic Surgery · Telehealth
Simi Valley, CA
Zachary Sharfman, MD
Orthopedic Surgery · Telehealth
Simi Valley, CA
Daniel Orlovich
Pain Management · Telehealth
Simi Valley, CA
Jason Baran, PT
Physical Therapist In Private Practice
Simi Valley, CA
Judy Ryan, PT
Physical Therapist In Private Practice
Simi Valley, CA
Irina Rypnina, PT
Physical Therapist In Private Practice
Simi Valley, CA
Lauryn Cooper, PA
Physician Assistant
Simi Valley, CA
Hannah Eicher, PA
Physician Assistant · Telehealth
Simi Valley, CA
Linda Liu, PA
Physician Assistant · Telehealth
Simi Valley, CA
Adrienne Panlilio
Physician Assistant
Simi Valley, CA
Dealie Park, PA
Physician Assistant · Telehealth
Simi Valley, CA
John Ray, PA
Physician Assistant
Simi Valley, CA
Jiami Uy, PA
Physician Assistant · Telehealth
Simi Valley, CA
Emily Warner, PA
Physician Assistant · Telehealth
Simi Valley, 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 140 affiliated healthcare providers across 10 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 orthopedic surgery, physician assistant, physical therapist in private practice, and podiatry, 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 37 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 77.6 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 Los Angeles, CA, with 9 additional locations listed on this page. See the contact section for the full address and phone number.
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