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I’m preparing a large-scale outreach campaign and need a database of one million verified B2B contacts pulled only from large healthcare corporations operating in California. Each record must belong to an Executive, Financial Manager, or Accountant—no other job roles, no small companies. Scope & data specs • Company size: large corporations only. • Industry focus: healthcare—hospitals, insurers, medical device makers, biotech, etc. • Location: California headquarters or primary decision-making office. • Contact roles: Executives, Financial Managers, Accountants. • Required fields: first/last name, exact job title, corporate email (no info@), direct phone number, LinkedIn profile, company name, physical address. • Verification standard: <2 % hard-bounce rate, validated within the last 30 days using tools such as ZoomInfo, Apollo, NeverBounce or equivalent. Deliverables 1. Sample file (1,000 records) in CSV/XLSX for quick review. 2. Full dataset of 1,000,000 contacts, delivered in batches of 100k. 3. Validation report for each batch showing tool used and date of verification. Timeline • Sample due within 3 days of award. • Full delivery within 3 weeks after sample approval. Milestone payments will be released after each batch passes a spot-check for accuracy and relevance. Please outline your data sources, verification process, and expected accuracy rate when you respond.
Project ID: 40340873
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Active 17 days ago
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9 freelancers are bidding on average $171 USD for this job

Hi, I can provide the accounting leads from USA. Please send me a message so we can talk and share a sample with you. Thanks
$250 USD in 3 days
7.5
7.5

With 5 years of experience in data gathering and lead generation, I am well-equipped to meet your ambitious goal of securing 1 million California B2B contacts pertinent to large healthcare corporations. As a B2B marketer proficient with diverse tools and platforms, I will utilize LinkedIn Sales Navigator, ZoomInfo, CrunchBase among others for effective sourcing and verification. With this comprehensive approach, my past yields has consistently yielded an accuracy rate of over 98%, as per required standards. Time is crucial in our efforts, and that is why I am vowing to deliver the sample CSV file within 3 days and the overall dataset in increments of 100k within 3 weeks of the sample approval. This segmented delivery schedule will also enable us to ensure accuracy by verifying each batch before advancing to the next. To reiterate my dedicated approach, I'm eager to share that I provide unlimited revisions until you are satisfied with the results. Tailored to your needs, this project requires meticulousness which aligns perfectly with my work ethic and values. Communication will be seamless, attribute,response will be swift, ensuringall areas are covered from job titles to corporate email addresses.
$140 USD in 5 days
6.1
6.1

Hi there, I noticed you need a large‑scale B2B database of one million verified contacts from large healthcare corporations in California—specifically Executives, Financial Managers, and Accountants, with direct emails, phone numbers, LinkedIn profiles, and company details, all validated within the last 30 days. I have extensive experience sourcing high‑volume, high‑accuracy B2B data using a combination of ZoomInfo, Apollo, LinkedIn Sales Navigator, and manual verification via NeverBounce to ensure a hard‑bounce rate below 2%. I can deliver a sample of 1,000 records within 3 days and the full dataset in 100k batches over 3 weeks, each batch accompanied by a validation report showing the verification tool and date. Let’s confirm the specific healthcare subsectors you want included (hospitals, insurers, biotech, etc.) and any size thresholds for “large corporation” (e.g., 500+ employees, $100M+ revenue). Best regards, Mobasher Reza
$240 USD in 3 days
4.2
4.2

Brooklyn, United States
Member since Mar 27, 2026
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