Our agency experts ranked the best BPO companies in Los Angeles based on reviews, ratings, portfolios, reputation, team size, cost of services, and more. The city is home to a thriving business process outsourcing (BPO) industry. These companies are equipped with highly trained and experienced professionals who have the skills and knowledge required to provide businesses with customized solutions that meet their unique needs. Skim through our list and find the best agency provider for your company.
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.
Founded in 2004 and headquartered in Encino, California, Callbox Inc. is a global leader in outsourced B2B lead generation, appointment setting, and event marketing. With over 20 years of experience and a multilingual team servicing APAC, LATAM, and EMEA, the agency supports medium-sized businesses to...
Top Services:
Managed Services
Cloud Consulting
Digital Marketing
ERP Consulting
CRM Consulting
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Location
Los Angeles, California
Number of Employees
500 - 999
Portfolios Count
100 Projects Listed
Callbox Services
Managed Services
Cloud Consulting
Digital Marketing
ERP Consulting
CRM Consulting
BPO
Event Marketing
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Amazon
Google
Microsoft
Workday
SAP
Telefonica
Zendesk
opentext
Yandex
NEC
Data sourced from the agency's DesignRush profile
Callbox Reviews & Testimonials
Joachim Fong Regional Marketing Specialist at Malvern Panalytical
5.0★
Lead Generation Review from Joachim Fong
For the past year, Callbox has provided us with satisfactory lead generating and lead nurturing services. They were instrumental in securing attendees for our events, scheduling client appointments and facilitating the sale of one of our benchtop systems. Their professionalism in conveying our product attributes and valued solutions to prospective customers has brought us results.
Jonathan Anderson Owner at ABS
5.0★
Lead Generation Review from Jonathan Anderson
I’ve used Callbox now for about four months for my internet marketing company. The first two months they did not pay off. However with some additional training on my part, they started to close a higher percentage of my target audience. They’re really smart, nice and are really working hard to keep my business. My dedicated team keeps me up-to-date through frequent communications. My R.O.I is getting stronger and my CPA is starting to drop.
Ted Calvin Co-Founder & Vice President at Charted Energy
5.0★
Appointment Setting Review from Ted Calvin
Charted Energy has enjoyed a productive relationship with Callbox. They have done a great job of helping us target prospects within the markets we serve as well as qualify leads and set up appointments with decision-makers. Callbox has generally exceeded the number of leads per week we expected and provides a good value by enabling our inside sales team.
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Highest Quality, Call Center Services with Superior Customer Support.
Offering Call Center Services. In today’s fast-paced business environment, a missed call equals a missed customer. Enter TAS United. Our experienced, bilingual agents answer your calls when you can’t – keeping you connected to your patients or customers 24/7/365...
Top Services:
Phone Answering Services
Call Centers
Location
Los Angeles, California
Number of Employees
Under 49
TAS United Services
Phone Answering Services
Call Centers
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Baylor
Siemens
Floodmaster Restauration
Golden Pass LNG
Data sourced from the agency's DesignRush profile
TAS United Reviews & Testimonials
Cerena Schane Customer Relationship Management Manager at Airco Mechanical
5.0★
Phone Answering Services Review from Cerena Schane
Partnering with TAS United not only helped save us money by outsourcing our call traffic, but enhanced our first impression with our customers. Beyond the ongoing and future savings, TAS United has allowed us to capitalize on more opportunities for new business. We have been able to eliminate significant time spent on the phones.
Viktoriia Bielkova Accountant at Congress Holding Group
5.0★
Call Centers Review from Viktoriia Bielkova
My experience using TAS United is very positive. Since TAS United is highly professional, responsive and client oriented. They provide a great service! I highly recommend TAS United as your business partner.
Dr. Shiree Flume Owner at Flume Psychiatry
5.0★
Phone Answering Services Review from Dr. Shiree Flume
I have been a customer of TAS United since 1989 and have been very satisfied with the service. The operators have helped many of my patients who were in mental health crisis over the years and their kindness and professionalism are much appreciated.
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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...
Top Services:
BPO
Location
Los Angeles, California
Number of Employees
100 - 249
Average Hourly Rate
$20/hr
Minimal Budget
$1,000 - $10,000
Zventus Services
BPO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Healthcare Industry
Insurance Industry
Fintech Industry
Data sourced from the agency's DesignRush profile
Zventus Reviews & Testimonials
Kaho Sakemi Review from Google
5.0★
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 Review from Google
5.0★
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 Review from Google
1.0★
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.
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We Provide Medical Billing Services in California.
Certified Healthcare Billing is a premier medical billing company based in California. We specialize in providing comprehensive billing services tailored to the healthcare industry. Our expertise ensures efficient, accurate, and compliant billing solutions for healthcare providers...
Top Services:
BPO
Location
Los Angeles, California
Number of Employees
50 - 99
Average Hourly Rate
$25/hr
Minimal Budget
$1,000 - $10,000
Certified Healthcare Billing Services
BPO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Hooman Esteki (Aaron)'s Review Sourced from Google
Big fan of CHB's RCM services in Los Angeles! They're fantastic at getting practices paid quickly and efficiently – truly a game-changer for revenue
SASHA SMIRNOV Review from Google
5.0★
SASHA SMIRNOV's Review Sourced from Google
Would highly recommend for billing services. CHB provides exceptional customer service. They always answer our calls.
Nikoghosyan Gevork Review from Google
5.0★
Nikoghosyan Gevork's Review Sourced from Google
Great group of individuals, We have been using there services for years. Our questions are always answered right away. I would definitely recommend to all practices large or small
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VargasAndrews is an international professional services firm specializing in business transformations and turnarounds. Our vision is to become an international market leader in business & digital transformations. We exist to transform businesses and business owner's quality of life. We are motivated and...
Top Services:
BPO
Accounting
Location
Los Angeles, California
Number of Employees
Under 49
Vargas Andrews Services
BPO
Accounting
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In business since 1979, Tel-Us Call Center offers a variety of inbound call center services customized to suit the needs of its clients. Our well-trained staff of bilingual agents is available 24/7/365...
Top Services:
Call Centers
BPO
Location
Los Angeles, California
Number of Employees
Under 49
Tel-Us Services
Call Centers
BPO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Kumato Labs
Infectious Awarebles
Century 21 Community
Data sourced from the agency's DesignRush profile
Tel-Us Reviews & Testimonials
Anna Schmick Review from Google
5.0★
Anna Schmick's Review Sourced from Google
⭐️⭐️⭐️⭐️⭐️Outstanding Service and Results!My customers have had a fantastic experience working withTel-Us Call Center Inc. The team is consistently professional, responsive, and genuinely committed to delivering top-tier customer service. They manage call flow efficiently while ensuring every caller is treated with care and attention.Clients often mention how smooth the onboarding process was and how seamless communication has been with the Tel-Us staff. Since partnering with Tel-Us, many have seen a clear improvement in their own customer satisfaction.Highly recommended!
Mr Lue Review from Google
5.0★
Mr Lue's Review Sourced from Google
We've been working with Tel-Us for years and they are some of the most professional and accomodating agents I have ever dealt with.
Erin Choi Review from Google
5.0★
Erin Choi's Review Sourced from Google
We’ve had a great experience working with Tel-US over the past year. Their team is responsive, easy to communicate with, and consistently delivers excellent service to both us and our patients. We feel confident knowing our patients are well cared for after hours. Thank you Stacy, Cheryl, and team for all that you do!
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Strategic Solutions for Businesses & Personal Finance
Our firm offers a wide range of services to our individual and business clients. Because our firm is relatively small, our clients benefit by getting personalized, quality service that is beyond comparison...
Top Services:
Business Consulting
BPO
Accounting
Location
Los Angeles, California
Number of Employees
Under 49
Fenton & Ross Accountancy Corporation Services
Business Consulting
BPO
Accounting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Finance Industry
Corporate Services Industry
Healthcare Industry
Data sourced from the agency's DesignRush profile
Fenton & Ross Accountancy Corporation Reviews & Testimonials
Ken Besada Review from Google
5.0★
Ken Besada's Review Sourced from Google
Cannot say enough amazing things about Team Fenton. These guys run an incredibly tight ship. Every interaction I have with his staff, makes me ever more grateful to have them in my corner. I have referred about a dozen new clients to their firm based on my experience and they all share the same sentiment and gratitude.
Christian MacCarron Review from Google
1.0★
Christian MacCarron's Review Sourced from Google
These people are complete clowns and awful at client service. They opted to terminate a multi-year relationship over Thanksgiving with no heads up around frustrations or issues. I would not recommend this group as they are not a true professional services firm. 0 stars if I could offer that.
Sean McCarthy Review from Google
5.0★
Sean McCarthy's Review Sourced from Google
Experts, fantastic service. They cover individual and small business. I've been with them a decade and couldn't be happier.
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Crowe LLP is a global accounting firm offering audit, tax, advisory, and consulting services. With deep industry expertise, we empower businesses to make informed decisions for lasting value. Recognized as a top workplace, we leverage our partnership with Crowe Global to provide comprehensive solutions...
Top Services:
Accounting
HR Outsourcing
Business Consulting
Market Research
BPO
Show more
Location
Los Angeles, California
Number of Employees
1000 & Up
Crowe Services
Accounting
HR Outsourcing
Business Consulting
Market Research
BPO
Software Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Banking Industry
Food Industry
Fintech Industry
Data sourced from the agency's DesignRush profile
Crowe Reviews & Testimonials
RA Review from Google
1.0★
RA's Review Sourced from Google
As an accounting firm I would give them 1 star. I recently discovered a litany of deductions they failed to consider. You will be given an EA, which is just a glorified tax preparer. They will know nothing and be slow to reply. You might as well get your taxes done by H&R block or a proper independent CPA. If these folks do your taxes, get prepared for a larger tax bill. I strongly advise against it.
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