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Why Primary.Health: The facts, in one place

Everything a public health procurement team asks us, from security and interoperability to the agencies we’ve worked with since 2020.

Talk to our team Trust Center

At a glance

Primary.Health in brief

Company
Primary.Health is the trade name of Primary Diagnostics, Inc.
Founded
Spring 2020, as a volunteer team supporting UCSF researchers
Headquarters
595 Pacific Ave, Floor 4, San Francisco, CA 94133
What we do
Software and services for public health departments, health systems, and schools: screening, testing, immunization, therapeutics, telehealth, case management, and public health lab data
Security
HITRUST certified and HIPAA compliant. Documentation in our Trust Center
Lab network
20 California public health laboratories connected for electronic orders and results (12 fully two-way), each under a business associate agreement and contract; orders for diverted specimens rerouted during the 2024 San Mateo flood without interruption in testing
Contracting
Listed on the California Multiple Award Schedules (CMAS)
Interoperability
Bidirectional immunization registry connections, electronic lab orders and results (ETOR), and EHR integration through Vim and the major EHR app ecosystems, including Epic; LIMS integrations with Apollo, Orchard, Epic Beaker, STARLIMS, and Clinisys
Schools
Used in more than 4,000 schools across California, Colorado, Delaware, and Minnesota, including more than 700 California school districts
Languages
Registration, reminders, and results in 23 languages
Memberships
Association of Public Health Laboratories (Corporate Colleague Sustaining Member) and the Association of Immunization Managers (Corporate Alliance Partner)
Accessibility
Accessibility partner Level Access. See our accessibility statement
Contact
Contact form · 1-855-970-3223 · sales@primary.health

Scale since 2020

Built for population scale

13.7M+
Tests administered
1.5M+
Vaccines delivered
7M
Lives across all programs
1,500+
Community organizations

A real-world example of impact

A statewide school immunization audit, from months to hours

In its first year with Primary.Health, a state health department moved 650+ schools from manual registry lookups to a continuous audit.

500+
nurse hours returned to clinical work
1 download
for the statewide CDC report, down from a 3-month compile
100%
of students re-audited through registry refresh
1/3
the prior pace of exemption growth, in year one

See the full example

Programs we’ve run

Proof from the field

California’s public health lab network

Electronic test orders and results across 20 county and state public health labs, built with CDPH and the Center for Laboratory Sciences.

Explore

California’s statewide antigen testing

Rapid antigen testing, plus a path to free treatment, within reach of every California resident.

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Multilingual vaccine access

Removing language as a barrier to vaccine appointments in Alameda County.

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Emergency lab diversion

Helping the San Mateo County Public Health Laboratory keep testing running through a flood.

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H5N1 readiness

Helping the South Dakota Department of Health build trust with dairy farms.

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Community studies with UCSF

The data system behind same-week prevalence studies in the Mission District and Bolinas.

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Airborne detection in schools

Public health workflow for the SCALE project, as a subcontractor to Poppy Health, a performer team in ARPA-H’s BREATHE program.

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Who we’ve worked with

Agencies and organizations we’ve worked with

Since 2020, alongside more than 1,500 community organizations, and the schools and districts listed below.

State and local public health

13
  • California Department of Public HealthStatewide antigen testing and school reopening programs
  • Minnesota Department of HealthFree community testing sites and high-throughput testing
  • Colorado Department of Public Health and EnvironmentVia COVIDCheck Colorado
  • Michigan Department of Health and Human Services
  • North Dakota Health and Human Services
  • South Dakota Department of HealthH5N1 readiness with dairy farms
  • Alameda CountyMultilingual vaccine access
  • City and County of San FranciscoMass vaccination and community clinics
  • Marin CountyFree at-home test kits
  • Ramsey County Public Health
  • San Mateo County Public Health LaboratoryEmergency flood diversion
  • Hayward Fire DepartmentDrive-through testing and long-term care testing
  • Delaware Department of EducationSchool testing

California public health laboratories

20
  • Alameda County
  • Butte County
  • Contra Costa County
  • Humboldt County
  • City of Long Beach
  • Monterey County
  • Riverside County
  • San Diego County
  • City and County of San Francisco
  • San Luis Obispo County
  • Santa Clara County
  • Shasta County
  • CDPH Viral and Rickettsial Disease Laboratory (Richmond)
  • Fresno County
  • Madera County
  • San Bernardino County
  • San Joaquin County
  • Santa Barbara County
  • Sonoma County
  • Tulare County

Two-way orders and resultsConnectedAbout the network

Universities and research

8
  • University of California, San FranciscoMission District and Bolinas community studies
  • Chan Zuckerberg BiohubHigh-quality testing at scale
  • University of LouisvilleCommunity prevalence studies
  • Colorado Mesa UniversityHigh-throughput campus testing
  • UCLASelf-serve testing access
  • University of Minnesota Genomics CenterTesting capacity for the Minnesota Department of Health
  • Mayo Clinic LaboratoriesLab integration
  • Poppy HealthSubcontractor on Poppy Health’s SCALE team, a performer in ARPA-H’s BREATHE program

Community organizations and health centers

10
  • Latino Task Force, San Francisco
  • La Clínica de La Raza
  • La FamiliaMass vaccination sites
  • Tiburcio Vásquez Health Center
  • Umoja Health
  • Public Health InstituteSchool antigen testing pilots
  • Heluna HealthLos Angeles school testing
  • COVIDCheck ColoradoTesting and vaccination scheduling
  • SaferTogetherBay Area school districts
  • Hallers PharmacyTesting, vaccination, and test-to-treat

Laboratory and care delivery partners

16
  • Renegade.bio
  • Color
  • Darwin Biosciences
  • Fulgent Genetics
  • SalivaDirect
  • Quidel
  • Vestra Labs
  • Lightspeed Testing
  • Homeland Health Specialists
  • COVIDCheck Colorado
  • Optum
  • SteadyMD
  • Solv Health
  • Sesame
  • CIC Health
  • TrueCare24

In research and the news

What others have published about our work

Peer-reviewed research, agency announcements, and news coverage that name Primary.Health.

Peer-reviewed research

Agency and academic announcements

News coverage

All coverage in the newsroom

Schools

Used in more than 4,000 schools

Public, charter, and private schools in California, Colorado, Delaware, and Minnesota have run testing, immunization tracking, and school health programs on Primary.Health, including more than 700 school districts in California’s statewide program. We helped these schools and districts keep classrooms open through the hardest moments of the pandemic, and they vouch for us publicly:

  • Amador County Unified School District
  • Camellia Waldorf School
  • Connect Community Charter
  • Coronado Unified School District
  • Fresno Unified School District
  • Gateway School
  • Hillsborough City School District
  • Lighthouse Community Public Schools
  • Marin Academy
  • McCloud Elementary School
  • McSwain Union Elementary School District
  • Monte Rio Union School District
  • Napa Christian Campus of Education
  • Natomas Unified School District
  • New Haven Unified School District
  • Old Orchard School
  • Pacific Union College Elementary
  • Saint Andrew’s Episcopal School
  • San Benito County Office of Education
  • San Francisco Waldorf School
  • San Pasqual Union School District
  • Santa Rita Union School District
  • St. John Vianney School
  • The Girls’ Middle School
  • The Institute for Effective Education
  • Ventura Unified School District
  • Westmorland Union Elementary School District
  • Willows Unified School District
  • Woodland School
  • Yreka Union School District

See how we work with schools

In their words

What public health leaders say

Public Health Labs

Seamless Emergency Response: How Primary.Health Helped Us Adapt During Crisis

Primary.Health’s platform simplified our emergency diversion efforts at a critical moment. With little time to learn a new system, it was easy to use and quick to implement…allowing us to rapidly adapt during our flooding event.

Kristina Hsieh
Lab Director
San Mateo Public Health Lab

Public Programs

Primary.Health has been a courageous and innovative partner, willing to create and iterate product offerings through every step of our partnership. Their system has allowed thousands of Coloradans to easily schedule both testing and vaccination appointments.

Nina Safane
Executive Director
COVIDCheck Colorado, a Gary Community Venture

Public Programs

…and from the start has supported communities in scaling testing programs to those who otherwise may not have had access.

Naomi Bardach
MD lead
Safe Schools for All

Public Programs

Our findings helped us communicate with community residents how widespread COVID-19 infection rates were in the early days of this pandemic aiding in crushing the curve and saving lives.

Rachel J. Keith, Ph.D., APRN, ANP-C
Assistant Professor of Medicine
University of Louisville

FAQ

Common questions

Is Primary.Health HIPAA compliant? Is it HITRUST certified?

Yes. Primary.Health is HITRUST certified and HIPAA compliant. Access is role based and follows least-privilege principles, and data is encrypted in transit and at rest. Security documentation is available in our Trust Center.

Do you connect to state immunization registries?

Yes. We maintain bidirectional connections with immunization registries: doses are written back to the state immunization information system automatically, the same day, and records are reconciled from registries nationwide.

Which public health labs are already connected?

20 California public health laboratories, including the CDPH Viral and Rickettsial Disease Laboratory in Richmond. 12 of them exchange orders and results in both directions. We hold a business associate agreement and contract with each lab, and integrate across Apollo, Orchard, Epic Beaker, STARLIMS, and Clinisys.

Do you integrate with EHRs and lab systems?

Yes. Immunization workflows run inside the EHR through Vim and the major EHR app ecosystems, including Epic. LabConnect integrates with your LIMS or LIS and exchanges electronic orders and results.

Can residents use it in their own language?

Yes. Registration, reminders, and results are available in 23 languages.

Is Primary.Health a public health or a commercial organization?

We’re a company, Primary Diagnostics, Inc., doing business as Primary.Health. We started as volunteers supporting UCSF researchers in spring 2020 and build shared infrastructure for public health, health systems, and schools.

How do we evaluate Primary.Health?

Talk to our team. We’ll walk through your program, show the platform on your workflows, and share security documentation and references from health departments we’ve worked with. The readiness check is a quick way to see where you stand today.

Ready before the next emergency.

Pick your partner on a calm timeline with real due diligence, not in the first week of a crisis.

Talk to our team Take the readiness check