Our industry experts ranked the leading BPO companies in California by their specialization, client reviews, average cost and more. Use the handy filter to find your service provider in a matter of clicks.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
Xassure by eDesk is a trusted customer support and back-office solutions provider helping businesses deliver exceptional customer experiences. We specialize in chat support, email support, voice support, and administrative services designed to reduce workload and improve operational efficiency...
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Wing is a managed assistant service that places dedicated, AI-trained assistants inside growing companies and healthcare practices. Wing handles recruiting, training, and oversight, so clients get coverage they direct without managing performance, replacements, or continuity themselves. Assistants work inside...
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DataEntryIndia.in is a leading data management and BPO service provider with over 25 years of experience and 850+ full-time data experts...
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GoJarvis matches growing businesses with pre-trained virtual assistants who handle operations, sales support, and inbox management — while building custom automations that make your business run faster...
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QuisLex is an award-winning alternative legal services provider that specializes in managed document review, contract management, compliance services, legal spend management, and legal operations consulting...
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IQ BackOffice is the leading accounting automation provider, offering 99.97% quality and up to 68% savings to companies around the globe...
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Zventus is a global services provider of management consulting, staffing solutions, and outsourcing services that empower organizations to innovate, improve and grow their business...
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Kaho Sakemi's Review Sourced from Google
Working at Zventus as a contractor has been one of the most insightful opportunities of my career. The projects I worked on were diverse and impactful, giving me hands-on experience in data analysis, marketing, and cross-functional collaboration. The leadership team is approachable, highly knowledgeable, and genuinely invested in helping you grow. The work culture is collaborative and supportive, making it easy to learn from colleagues and contribute meaningfully to company goals. I’ve gained valuable skills, industry knowledge, and professional connections that I hope to maintain with these individuals for years to come.
Harley Chen's Review Sourced from Google
I have just completed my four-month internship as an Associate Consulting Intern at Zventus, and I highly recommend this company as a place to work and intern.As a college student eager to break into the business world, I found Zventus to be an incredible launchpad. It provided me with the opportunity to apply what I’ve learned in school to real-world, client-oriented projects, while also engaging directly with senior management. Most importantly, they truly listen to your ideas and feedback.During my internship, I contributed to a variety of projects including market research, data analysis, marketing resource creation, business strategy, financial forecasting, and even project management. This diverse experience has been invaluable in preparing me for my future career.I have now secured an internship with a Fortune 500 company. My experience at Zventus was instrumental in this achievement. Not only was it my first internship in the U.S.—which significantly enhanced my resume—but it also gave me the deep knowledge and practical experience that became the highlight of my interview discussions.Thank you for all the amazing people here, each one of them is absolutely amazing to work with!
Gabriela Saavedra's Review Sourced from Google
I absolutely do not recommend working for this company. They are inefficient. If there is a problem, don't expect them to contact them, as they never show up. It seems like a school project where they never know what happened or who did what, and in the end, it's a collage of incomplete projects. They still want to pay the minimum and expect you to divide your time into three or four different activities. PLEASE DO NOT APPLY. This company is not worth it. They are inept, irresponsible, arrogant, and underpaid.
Revix MD provides medical billing, revenue cycle management, medical coding, claims processing, denial management, AR recovery, and practice management services for healthcare providers across the United States...
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George Gamouras, MD's Review Sourced from Google
This billing company is thorough and very accomodating to our needs. They also make sure to process claims in a timely manner.
SunTec Data is a global leader in AI-enabled data, BPO, and KPO solutions, backed by over 25 years of experience and 1,500+ data professionals across 50+ countries. Combining advanced AI tools with human-in-the-loop oversight, we deliver ISO-certified, HIPAA-compliant data management...
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BPO Review from Victor Cook
SunTec Data has been our outsourcing partner for the last three years. The team has considerably fueled our growth by providing financial data management and support.
BPO Review from Marc Hill
We were delighted with the results offered by SunTec Data. The team aptly understood our requirements and delivered high-quality data management solutions. Highly recommend them!
BPO Review from Mike Robinson
Great job done by the team! They analyzed our requirements, maintained transparent communication, and delivered tailored contact lists. Would definitely work with them in the future!
A new era of healthcare, a new world of practice well-being. We're redefining practice success at the crossroads of compassion and connectivity...
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Celia Gomes McGillivray's Review Sourced from Google
The representative was awesome. However, I still have to wait 3-5 business days for my provider account to be added so that I can write prescriptions.
Kendra Cole's Review Sourced from Google
Our company has been very pleased with Talisman billing services. Our representative Kishor is very responsive whenever we have questions about patient co-pays or balances. We are very satisfied with their billing services and I would highly recommend them to others!
J B's Review Sourced from Google
They are simply crooks. I told them multiple times to cancel my subscription and they continued to charge my credit card. Over $1000 in stolen charges. Hours on hold with a ridiculous inept customer service system that ran me in circles. I finally had to cancel my credit card. My emails were ignored. Stay away from this company.
Cube Accounting Solutions bookkeeping firm based in Newport Beach is one of the most preferred outsourced end-to-end bookkeeping service providers...
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CodeFulcrum is an agile and progressive software company. Specializing in web, mobile and enterprise software development. Delivering products that are both visually stunning and technically ambitious with an unparalleled level of expertise...
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Startupr is an outbound lead generation agency built for B2B startups that need predictable pipeline without hiring an in-house SDR team...
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Martal Group is an award-winning B2B lead generation and sales agency specializing in scaling tech businesses. Since 2009, our top-performing sales executives have been instrumental in generating qualified leads for over 2,000 B2B organizations, ranging from startups to Fortune 500 companies...
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Marketing Review from Nidhi Jaiswal
From the very start, their team was very professional, communicated in a timely manner, and was very familiar with B2B lead generation. We were just surprised at their team culture and their desire to work hand-in-hand with our team. It felt like they were not an external vendor but a true partner in all respects.Throughout our working time together, Martal always produced excellent work while keeping us informed and engaged. They are solution-oriented, proactive, and willing to share ideas that enhance performance. It is not often that you find a team that is so concerned about your success.What we value most is their honesty and commitment to building something that will last. They don't seek quick wins but work to build outcomes that last and can potentially expand. With their experience combined with a well-structured plan, they are a reliable and outcome-driven collaborator.If you need to reach more customers and you would like to have a company that is concerned about your success, you can rely on Martal Group. We highly recommend that you use their services.
Digital Marketing Review from Anas Aftab
Working with Martal Group has been an absolute pleasure. Their team is collaborative and transparent and consistently delivers on their commitments with professionalism and expertise. From the start, it was clear they are passionate about building meaningful and lasting business relationships.What stands out most is their willingness to go above and beyond. Whether its sharing valuable insights, offering timely support, or simply being approachable and helpful, Martal Group has proven to be a reliable partner. Their depth of knowledge in the B2B space, paired with a genuine dedication to helping businesses grow, makes them a standout organization.If you're looking for a team that values collaboration, transparency, and long-term success, Martal Group is an excellent choice.
Call Centers Review from Doug McLean
Martal Group was able to facilitate Complete EDI’s first ever outbound lead generation efforts in the company’s history. Following the onboarding process, Martal was able to deliver 2 sales-qualified leads within the second week of campaigns and by the end of the 3 month pilot period had 14 sales-qualified leads.
Liberty Liens is a reliable partner for doctors across the United States. We handle billing, lien filing, claim tracking, and day-to-day support to make the complex side of practice management easier, faster, and more dependable...
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