CertifyOS
CertifyOS provides API-based healthcare provider data infrastructure, serving major health plans and digital health companies. The 332-person company has raised $59M, including a Series B in mid-2025.
The growth story
CertifyOS grew from 3 to 332 employees between 2021 and 2026, raising $59M along the way, most recently a Series B in June 2025.
About
CertifyOS offers an API platform that standardizes healthcare provider data for insurers and digital health firms, aiming to reduce administrative costs and improve patient access. The system assigns unique provider identifiers to streamline credentialing and network management.
The company reached 332 employees within four years of its 2021 founding. Its $59M Series B suggests rapid scaling, though headcount growth rates aren't disclosed. Major clients include unnamed large health plans and digital health players.
Founders and leadership
Operations dominates with 75 staff, reflecting the data-intensive nature of provider credentialing work. The fully remote structure spans teams likely focused on API development, data normalization, and compliance.
Departments, and which ones grew
Headcount by function: Operations 150 (+27% YoY), Engineering 32 (+52% YoY), Information Technology 25 (0% YoY), Quality Assurance 19 (0% YoY), Customer Success and Support 14 (+100% YoY), Business Development 13 (+18% YoY).
Talent flow
One in seven employees came from Zocdoc, with Amazon and offshore IT services firms like Cognizant also significant sources. Alumni scatter thinly across healthtech and fintech startups, with no single dominant destination.
Most common previous employers of CertifyOS staff: Zocdoc (21), Amazon (17), Cognizant (9), Tech Mahindra (7), Revolut (6), TTEC (5). Former CertifyOS employees most often moved to Rippling (2), Assured (2), Zócalo Health (2), Openlayer (2), DPR Construction (1), Lyric (1).
Alumni worth knowing
The CertifyOS mafia
Four alumni-founded startups exist, including DeepModel (7 staff) and ParsanAI. All appear to be early-stage with small teams, suggesting recent departures from CertifyOS.
4Himakara Pieris, was Advisor until 2024Abiola Ogunjobi, was Product Designer until 2022Asif Islam, was Team Lead (Medical Licensing) until 2023Web traffic
Traffic mix: 54% direct, 32% search, 0% social, 0% paid.
What this company is made of
Most common skills at CertifyOS: Microsoft Excel (136), Communication (127), Microsoft Office (119), Analytical Skills (107), Problem Solving (103), Data Analysis (101), Leadership (99), SQL (98).
Where the team actually sits
CertifyOS people are concentrated in Karnataka, India (35), Maharashtra, India (31), Delhi, India (12), India (11).
Search footprint
CertifyOS attracts about 1,045 organic search visits a month, traffic worth roughly $10K a month if bought through ads. It gained 391 ranking keywords and lost 139 in the last period.
What employees say
- Compensation
- 2.90 / 5
- Career opportunities
- 3.10 / 5
- Senior management
- 3.10 / 5
- Work-life balance
- 3.20 / 5
Frequently asked
CertifyOS has 332 employees as of September 2026.
CertifyOS has raised $59M in total, most recently a Series B round in June 2025.
CertifyOS was founded in 2021 by Anshul Rathi.
The most common previous employers of current CertifyOS staff are Zocdoc (21 people), Amazon (17 people), Cognizant (9 people).
Former CertifyOS employees most often move to Rippling (2), Assured (2), Zócalo Health (2).
At least 4 companies have a founder who previously worked at CertifyOS, including DeepModel, ParsanAI, Lexia AI.
CertifyOS attracts about 1,045 organic search visits a month, worth roughly $10K a month in equivalent ad spend.
The most common skills among CertifyOS staff are Microsoft Excel, Communication, Microsoft Office, Analytical Skills, Problem Solving.
CertifyOS staff are concentrated in Karnataka, India (35), Maharashtra, India (31), Delhi, India (12).
CertifyOS has about 150 people in Operations, up 27% over the past year, as of September 2026.
CertifyOS has about 32 people in Engineering, up 52% over the past year, as of September 2026.
Computed from 207 current and 139 former CertifyOS profiles, as of September 2026. Source: Crustdata.
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