California · 9 firms listed
Medical Billing Companies in California
The short answer
We list 9 medical billing companies serving practices across California, with profiles covering specialties, services, and locations. Listings are alphabetical, with featured firms first.
California's billing environment is shaped by managed care. The state's Knox-Keene framework built one of the most HMO-heavy markets in the country, and Medicare Advantage and Medi-Cal managed care plans touch a huge share of claims. Add some of the highest labor costs in the nation, and you get a state where outsourcing billing is often a financial no-brainer rather than a close call.
This page lists 9 billing firms serving California practices, drawn from our directory of 142 verified firms nationwide. Each profile shows the specialties and services a firm covers, and firms appear in alphabetical order. Any featured (paid) listings are clearly labeled.
Medical billing companies in California
Verified firms serving practices in California. All listings are unclaimed unless marked otherwise.
9 firms listed
Healthcare business process outsourcing and revenue cycle management.
Glendale, CA
Multi-specialty billing and coding, serving cardiology, ambulatory surgery centers, and nephrology practices.
Cerritos, CA
Cardiology
Medical billing services.
Los Angeles, CA
Multi-specialty revenue cycle outsourcing and claim-submission software.
Pleasant Hill, CA
Full-spectrum medical billing services for small and mid-sized practices.
Los Angeles, CA
Revenue cycle management serving labs, imaging centers, and hospitals across 50+ specialties.
Irvine, CA
Revenue cycle management for ambulatory surgery centers, office-based labs, and specialty practices.
Upland, CA
Orthopedics · Cardiology · Radiology
Physician billing, Medicare credentialing and enrollment, and full revenue cycle management.
Ontario, CA
Multi-specialty revenue cycle management.
Davis, CA
Orthopedics · Cardiology · Pediatrics
9
medical billing firms listed for California
Source: BillingFirms directory data
142
verified billing firms in the full directory
Source: BillingFirms directory data
4-10%
of collections: the fee range billing vendors commonly cite
Source: Industry vendor pricing pages (commonly cited range)
11.8%
initial claim denial rate reported by Kodiak Solutions in revenue-cycle trade press
Source: Kodiak Solutions, via revenue-cycle trade press
The California payer landscape
Managed care is the defining feature here. Large commercial HMOs, Medicare Advantage plans, and Medi-Cal managed care plans dominate volume in most markets, which means capitation arrangements, risk-sharing contracts, and authorization requirements show up constantly. A biller who only knows fee-for-service PPO billing will struggle in California.
The state also has a large telehealth footprint, especially in behavioral health, and strong parity rules that shape how virtual visits are billed. If telehealth is part of your practice, confirm the firm bills it routinely, not occasionally.
Why California practices outsource so often
Labor costs are the bluntest reason. Experienced billers in Los Angeles, San Francisco, and San Diego command high salaries, and turnover is a constant headache. For many practices, a billing firm costs less than a single experienced in-house biller once you count salary, benefits, and management time.
The second reason is complexity. Between managed care rules, Medi-Cal requirements, and the sheer number of plans operating in the state, the learning curve for a new in-house hire is steep. Firms that already know the California payer mix skip that ramp-up entirely.
What California practices should ask before signing
Managed care fluency should lead the interview. Ask how the firm handles capitation reconciliation, authorization tracking, and plan-specific denial patterns. Then cover the fundamentals that matter everywhere.
- How do they handle managed care specifics like authorizations, capitation, and risk arrangements?
- What is their telehealth billing experience, including parity and place-of-service rules?
- How do they manage denials and appeals, and who does that work?
- What reporting will you see, and how often?
- Who owns your data and clearinghouse enrollments if you leave?
Frequently asked questions
How much does a medical billing company cost in California?
Most firms charge a percentage of collections, and vendors commonly cite 4 to 10 percent depending on specialty and claim volume. California pricing often runs toward the higher end because the payer mix is complex and labor costs are high. We do not verify individual firm pricing, so get a detailed written quote from each finalist.
Do I need a biller who understands managed care?
In California, yes, this is close to mandatory. HMOs, Medicare Advantage, and Medi-Cal managed care dominate most markets, and they bring authorization requirements, capitation, and plan-specific denial patterns. Ask finalists how they track authorizations and how they handle managed care denials specifically.
Can a billing firm handle my telehealth visits too?
A good one should. Telehealth is a large share of volume in California, especially in behavioral health. Confirm the firm bills virtual visits routinely, understands place-of-service and modifier rules, and keeps up with parity requirements. Ask for a telehealth-heavy client reference if virtual care matters to you.
Should I choose a California-based firm or a national one?
California-based firms often know the managed care landscape and Medi-Cal from daily work. National firms may offer deeper specialty benches and better technology. Judge candidates on managed care experience, denial performance, and reporting transparency rather than headquarters location. Ask how each finalist tracks authorizations and handles plan-specific denials, since managed care execution is where California billing is won or lost.
Are the firms on this page ranked or vetted?
No. Every firm shown is currently unclaimed and unfeatured, and listings appear in alphabetical order. This is a directory, not a ranking. If featured (paid) listings are added in the future, they will appear first and be clearly labeled. Our methodology page explains the full selection process.
How this list was made
Firms on this page come from the BillingFirms directory's verified firm data, filtered to companies serving California practices. Inclusion is not a ranking or an endorsement. Every firm shown is currently unclaimed and unfeatured, and listings are sorted alphabetically. If featured (paid) listings are added later, they will appear first and be clearly labeled. Our full selection process is published on the methodology page.
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