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Medical Billing Companies in California

Best Medical Billing Companies in California in 2025

California, the most populous U.S. state, is also among the top 10 because of its robust healthcare system. According to the U.S. News and World Report, it is the sixth-best state in the USA for health care. After Texas, California has the second-highest number of “active” hospitals. Definitive Healthcare found that the total number of hospitals across the country is over 7,300, out of which California is home to 514. 

With over 39 million residents and just 514 fully functioning hospitals, there is a growing demand for medical billing companies in California to manage the large volume of insurance paperwork. The good news is that California is also the second-best state for medical billing businesses. IBISWorld states that nearly 347 medical billing businesses are operating in California. 

If your healthcare practice is struggling to find the right balance between rendering quality healthcare and maintaining financial stability, then take a look at the 10 best medical billing companies in California. Our list can help you find the perfect billing partner. 

Top 10 Medical Billing Companies in California

The top-rated medical billing companies in California offer tailored billing, coding, and revenue cycle management (RCM) solutions across various specialties to streamline the insurance payment collection process. They combine industry expertise with innovative technology to offer cost-effective medical billing solutions to small, medium, and large healthcare practices. 

In this section, we have listed the top 10 medical billing companies in California along with their brief descriptions, helping you compare and choose the best one for your medical practice. 

1. MediBillMD

MediBillMD Logo

Although based in Dallas, Texas, MediBillMD is a premier provider of medical billing services in California because of its nationwide reach and industry-lowest rates. It has secured the top spot on our list of ‘Best Medical Billing Companies in California in 2024’ due to its exceptionally low 1% promo rate on all medical billing, coding, and RCM solutions. 

Its wide range of offerings includes medical credentialing, charge capture, medical coding, claims processing, denial management, A/R follow-up, payment posting, patient collections, practice management, and more.

All its solutions are HIPAA-compliant and managed by AAPC-certified coders, expert billers, and revenue cycle specialists. The company promises a 98% clean claims rate, a 96% net collections ratio, and up to 15% revenue uptick. You can contact the MediBillMD team for a free consultation or more details. 

2. RCM Matter 

RCM Matter Logo

Based in Glendale, California, RCM Matter is a leading medical billing and revenue cycle management firm that promises 3x faster payment collection. The company was formed in 2017 to help small and medium healthcare practices realize revenue. 

Its suite of medical billing and practice management solutions includes credentialing, coding, insurance eligibility, denial management, A/R follow-up, payment posting, healthcare marketing, bookkeeping, and patient statement & collection. 

RCM Matter caters to the unique billing needs of 50+ specialties. Its system’s seamless integration with over 40 EHR software makes it one of the most sought-after billing companies in California. Its virtual team of AI and human medical assistants efficiently manages your workflow through solutions like medical transcription, appointment scheduling, and 24/7 technical support. You can connect with the RCM Matter team via call or email to get instant access to HIPAA-compliant billing solutions.   

3. Doctors One Practice Solutions, LLC

Doctors One Practice Solutions is one of the most renowned medical billing companies in California. Established in 2014 in Corona, California, Doctors One Practice Solutions provides full-stack medical billing, healthcare technology consulting, and virtual EHR scribe services to independent providers from over 27 listed specialties.   

With a combined industry experience of over 18 years, experts at Doctors One have mastered the skill of revenue optimization through cost-effective software implementation. Its comprehensive OneSolution EHR, virtual scribe, and medical coding and billing package has shown a 40% improvement in payment collection, reducing the cash back time to 35 days. Moreover, the company’s MyStaff virtual office assistant solution streamlines appointment scheduling, prior authorization processing, and documentation management. 

Many practices have expressed satisfaction with Doctors One’s offerings. Its cancel-anytime policy, professional IT support, and ISO 9001 protocols are hard to miss.

4. My RCM Group

My RCM Group Logo

My RCM Group has made it to our list of ‘Top Medical Billing Companies in California’ because of the incredible savings it offers to its clients. With service charges starting at 2.99% of net collections, clients can save up to $4,990 per month. Based in Chino, California, My RCM Group is one of the fastest-growing medical billing companies in the Golden State.

It claims to slash healthcare practices’ fixed-monthly expenditures by up to 50% through its all-encompassing medical coding, billing, and RCM solutions. The Group can file accurate and HIPAA-compliant electronic claims on the same day and secure reimbursements within 14 days. It has an average collection rate of 90%. 

So, if you are looking for reliable insurance verification, data entry, claims processing, physician credentialing, A/R management, and virtual staffing solutions, reach out to the team through phone or email and book a free initial consultation. 

5. P3 Healthcare Solutions, Inc. 

P3 Care Logo

If you are looking for one of the most renowned medical billing companies in California, P3 Healthcare Solutions, Inc., commonly known as P3 Care, is the one you should pick. The company combines cutting-edge technology with the experience and expertise of its professionals to offer accurate, secure, and tailored medical billing solutions. 

P3 Care, situated in Ontario, CA, is an MIPS Reporting Consultancy. It helps healthcare professionals with their bookkeeping and tax filing along with medical coding, billing, credentialing, software support, complete denial, accounts receivable, and revenue cycle management. The company was mentioned on Fox News, NBC, MarketWatch, Daily Herald, and Digital Journal. Over 500 physicians are actively using P3 Care’s services and enjoying benefits like high MIPS scores, streamlined workflow, quicker reimbursements, and improved cash flow. 

You, too, can enhance your clinical efficiency by up to 92%. Just give its team a call or drop an email to schedule a cost-free appointment. 

6. California Medical Billing 

California Medical Billing Logo

It is hard to find California medical billing companies that are 100% US-based. But with California Medical Billing, you are in luck. The company maintains its headquarters in Rancho Cucamonga, CA. Since 2001, California Medical Billing has offered specialized and tech-driven solutions to its clients. It uses a Proven Proprietary 5-Point system to ensure up to a 97% collection rate, and in 2023 alone, it collected over $34 million in paid claims. 

The company’s offerings include expert navigation of CA HMO, CA Medicare, and CA Medi-Cal regulations, precise insurance billing, and comprehensive practice management. California Medical Billing provides 3 customized packages – Efficiency Package, Optimization Package, and Partnership Package – to cater to the unique needs of healthcare practices across the state. 

You can reach the staff through call and email to schedule a free consultation or get more details, like their service fee. 

7. Med Karma

Med Karma Logo

Med Karma is another Ontario-based medical billing provider on our list of ‘Top-Rated Medical Billing Companies in California’. The company was incepted in 2020 under its President, Jaspreet Singh, to empower healthcare practices through efficient medical billing and optimized revenue cycle.

Since then, it has served over 219 clients with a combined industry experience of 27+ years. From virtual assistance to provider credentialing and patient contact solutions to revenue cycle management, Med Karma has a full stack of high-tech solutions up its sleeves. The medical specialties it routinely takes on board include sleep labs, dental clinics, HME/DME suppliers, and diagnostic labs. 

The company is HIPAA-compliant and ISO-certified, promising seamless and secure integration with 20+ EHR systems and billing software. You can contact their sales team via call or email for a complimentary consultation and pricing structure.  

8. Pro Medical Billing & Coding Services 

Very few medical billing companies in California take the time and effort to provide comprehensive training to their clients’ front office staff. Fortunately, Pro Medical Billing & Coding Services (ProMBCS) is one of them. The company was founded in 2022 by Isabel Beltran and is headquartered in Corona, California. It offers multi-specialty billing and coding solutions with credentialing, contracting, case-specific consulting, and auditing. 

ProMBCS staff have over 20 years of industry experience in healthcare billing and management. The employed experts are well-versed in the latest regulations and payer requirements to ensure compliance with rules such as HIPAA. From eligibility verification to enrolling providers for EFT/ERA and posting collections to denial management, they can handle everything seamlessly. 

So, if you are one of the 20 medical specialties that ProMBCS caters to, then you can contact them via their online form, email, call, or fax to see if they match your needs. 

9. FCS Medical Billing 

FCS is another company in our ‘Best Medical Billing Companies in California’ listicle that offers full-service medical billing solutions at introductory rates. The company has an office in Newport Beach, California, and employs a team of dynamic and committed professionals who implement out-of-the-box thinking to increase client revenue. 

FCS Medical Billing’s stack of solutions includes medical transcription, insurance billing, medical coding, front desk support, credentialing, practice management, electronic payment posting, A/R recovery, charge entry, and more. It guarantees up to 99% accuracy in claims processing, real-time reporting, and maximized reimbursements. The company’s coders are AAPC and AMBA-certified, and their system is powered by NextGen Healthcare. 

For more information and pricing details, you can get in touch with FCS Medical Billing representatives over the phone/email or drop by their office at 4630 Campus Drive. 

10. Zymeda Provider Solutions

Zymeda Provider Solutions Logo

The last name on our list of ‘Top 10 Medical Billing Companies in California’ is Zymeda Provider Solutions. With a modest office in Moreno Valley, California, the company has provided medical billing, claims administration, strategic consulting, data analytics, and marketing and communications solutions since 2012.  

Zymeda focuses on building relationships and providing real solutions to enhance practice performance. Using revenue cycle capabilities, KPI analytics, and process improvement strategies, the company addresses its clients’ financial and operational challenges. Its targeted approach regarding compliant coding, documentation, claims follow-up, and MIPS, P4P, and RAF quality reporting has successfully increased clients’ revenue. 


So, if you would love to partner with a Healthcare Business Management Association (HMBA) compliance-accredited medical billing company in California, you can connect with Zymeda’s representatives via call, fax, or their online form.

Comparing the Best Medical Billing Companies in California

With over 347 medical billing businesses in the state, it was not easy to shortlist the 10 best medical billing companies in California. However, we streamlined our search by looking for names that consistently ranked at the top on Google My Business (GMB), GoodFirms, and Yelp listings. 

We paid close attention to the 10 California medical billing companies’ user ratings and reviews and made a note of what the real clients had to say about the company and its staff. All the names on our list have an above 4-star rating, and client testimonials indicate that the companies are reliable and responsive, offering real-time results.

Moreover, these medical billing companies in California were vetted for their years of industry experience, specialty-specific expertise, technological capabilities, and reasonable service fees. So, rest assured that your practice’s finances will be in safe hands. Outsource medical billing to any one of the above ten to enjoy effortless revenue transformation and optimal business success. 

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