If you run a functional medicine practice, you've probably heard of Cerbo. It has been the default EHR and practice management tool for integrative and functional medicine since its rebranding around 2020 (previously DocStation). It understands supplement protocols, lab ordering, and the long-visit workflows that mainstream EHRs handle poorly. In December 2025, Cerbo merged with OptiMantra. Mergers in practice management software historically lead to product consolidation, price changes, and feature deprecation as the combined entity rationalizes two overlapping products. If you're a Cerbo user, the merger makes this a particularly good time to assess alternatives before your workflow gets disrupted by integration decisions you didn't make.
But if you've used Cerbo for more than a year, you've also felt its limitations. The interface looks like it was designed in 2015. Patient communication is basic. Automation is limited to simple reminders. And the moment you want to build a branded patient experience or automate your intake-to-follow-up pipeline, you're duct-taping together Cerbo, Mailchimp, Calendly, and a patient portal that doesn't match your brand.
Thimble Portal is a newer entrant built specifically for the problems Cerbo doesn't solve: patient engagement automation, white-label branding, and operational workflows that go beyond charting. This comparison is honest. We'll tell you where Cerbo is stronger and where Thimble Portal wins. The right choice depends on what your practice actually needs in 2026.
Thimble Portal vs Cerbo: Quick Feature Comparison
- Pricing: Cerbo starts at $228/mo per provider with a $1,195 setup fee. Thimble Portal's clinic tier starts at $149/mo flat (no per-provider fee, no setup fee)
- Clinical charting: Cerbo has structured SOAP notes, ICD-10 coding, and lab integration. Thimble Portal has encrypted clinical notes with structured templates in development
- Automation: Cerbo offers basic appointment reminders and simple email triggers. Thimble Portal has a visual automation builder with 27 action types, conditional branching, A/B splits, and 20+ trigger types
- Patient portal: Cerbo's portal is functional but generic. Thimble Portal is fully white-labeled to your brand, your domain, your colors
- Pharmacy: Cerbo integrates with supplement dispensaries. Thimble Portal has a built-in pharmacy fulfillment pipeline for compounded meds, supplements, and GLP-1 medications
- Billing: Cerbo handles basic invoicing. Thimble Portal uses Stripe Connect with per-clinic Stripe accounts, subscription billing, and payment recovery automations
- HIPAA encryption: Cerbo encrypts at the database level. Thimble Portal encrypts at the field level using AES-256-GCM across 90+ data models
Where Cerbo Wins
We'll be direct about this. Cerbo does several things that Thimble Portal doesn't do yet, and for some practices these are dealbreakers.
Clinical Charting Depth
Cerbo was built as an EHR first. It has structured SOAP note templates, problem lists, ICD-10 coding, and clinical documentation workflows that have been refined over years of functional medicine use. If your practice lives inside the chart and you need deep clinical documentation, Cerbo's charting is more mature.
Thimble Portal has encrypted clinical notes today, with structured SOAP templates on the 90-day roadmap. For practices that need full clinical charting right now, Cerbo has the edge.
Lab Integration
Cerbo integrates with lab ordering services and displays results inside the patient chart. Thimble Portal does not have native lab integration today (Rupa Health integration is on the 6-month roadmap). If lab ordering and result management is central to your workflow, Cerbo handles this now.
Insurance Billing (If You Need It)
Cerbo has basic insurance billing support. Thimble Portal does not and has no plans to add it. If you bill insurance, Thimble Portal is not the right platform. Thimble Portal is designed for cash-pay, membership, and subscription-based practices.
Where Thimble Portal Wins
Automation That Actually Automates
This is the single biggest gap between the two platforms. Cerbo's automation is limited to appointment reminders, basic recall sequences, and simple email triggers. If you want to build a new patient onboarding sequence that sends a welcome email on day 0, a lab prep reminder on day 7, a results notification on day 14, and auto-books a follow-up on day 30, you need third-party tools.
Thimble Portal's automation engine has 27 action types arranged in a visual builder. You can create workflows with conditional branching (if patient completed intake, do X; if not, do Y), A/B message testing, delays, consent-aware delivery, and triggers based on clinical events, billing events, or patient behavior. This is ActiveCampaign-grade marketing automation built into a HIPAA-compliant clinical platform. No functional medicine competitor offers anything close.
White-Label Patient Experience
Cerbo's patient portal is functional but generic. Patients log in to a Cerbo-branded interface. Thimble Portal is fully white-labeled: your domain, your logo, your colors, your email sender address. Patients see your brand at every touchpoint. For practices building a premium functional medicine brand, this matters.
Pharmacy Fulfillment Pipeline
Cerbo integrates with supplement dispensaries like Fullscript and Wellevate. Thimble Portal goes further with a built-in pharmacy fulfillment pipeline that handles compounded medications, supplement dispatch, shipment tracking, and GLP-1 fulfillment through integrated pharmacy partners. For practices prescribing compounded hormones, peptides, or weight management medications, this is a significant operational advantage.
Pricing Model
Cerbo charges $228 per provider per month with a $1,195 one-time setup fee, and practitioners report being charged for additional customizations. For a 3-provider practice, that's $684/mo plus setup costs before you add Mailchimp, Calendly, and other tools. Thimble Portal's clinic tier is $149/mo flat for solo practices or $349/mo plus $99/provider for teams. No per-provider scaling on the base. And the automation, email, SMS, and patient portal are all included, so you eliminate 3-4 separate tool subscriptions.
Field-Level HIPAA Encryption
Cerbo encrypts data at the database level, which is the HIPAA minimum. Thimble Portal encrypts every PHI field individually using AES-256-GCM across 90+ data models. Even if someone gains database access, individual patient fields remain encrypted. An automated test suite validates encryption on every deployment. This is enterprise-grade security at a fraction of enterprise pricing.
Stripe Connect Billing
Each clinic on Thimble Portal gets its own Stripe account. Your patient payment methods, subscription history, and billing relationships belong to you. If you ever leave the platform, your billing data comes with you. Cerbo processes payments through its own system. Your billing data stays with Cerbo.
Who Should Use Cerbo
- Practices that need deep clinical charting with ICD-10 coding today
- Practices that bill insurance (even partially)
- Practices where lab ordering and result display is the primary workflow
- Solo practitioners who want a traditional EHR with functional medicine templates
Who Should Use Thimble Portal
- Cash-pay functional medicine practices that want to automate patient engagement
- Practices building a premium brand that needs white-label patient experience
- Clinics prescribing compounded medications or supplements that need pharmacy fulfillment
- Practices spending $500+/mo on separate tools for email, booking, CRM, and patient communication
- Multi-provider practices that want flat pricing instead of per-provider fees
- Practices that prioritize HIPAA compliance beyond the minimum standard
Migration: Switching From Cerbo to Thimble Portal
If you're considering a switch, the migration path matters. Thimble Portal's onboarding includes data migration support, so you're not rebuilding from scratch. Patient records, subscription billing, and intake forms can be imported. The automation engine can replicate (and extend) any reminder or communication workflow you currently run through Cerbo plus third-party tools.
Most practices run both systems in parallel for 2-4 weeks during transition. New patients go through Thimble Portal immediately. Existing patients migrate as they come in for their next appointment. This avoids the disruption of a hard cutover.
See Thimble Portal in Action
Book a 15-minute walkthrough and we'll show you exactly how Thimble Portal handles your specific functional medicine workflows, including automation sequences, pharmacy fulfillment, and white-label branding. Ask about The Switch Program: first month free + free data migration from Cerbo.
Book a Demo →Frequently Asked Questions
- Is Thimble Portal a good Cerbo alternative in 2026?
- It depends on what you need. Thimble Portal is a strong Cerbo alternative for cash-pay practices that prioritize patient engagement automation, white-label branding, and pharmacy fulfillment. Cerbo is the better choice if you need deep clinical charting with ICD-10 coding and lab integration right now. Many practices use both: Cerbo for clinical documentation and Thimble Portal for patient engagement and billing.
- Is Thimble Portal an EHR replacement for Cerbo?
- Not yet. Thimble Portal is a patient engagement and operations platform. It handles intake, billing, communication, automation, and the patient portal. For practices that need deep clinical charting with ICD-10 coding and lab integration, Cerbo's EHR features are more mature. Thimble Portal's structured SOAP templates are on the 90-day roadmap.
- Can I use Thimble Portal alongside Cerbo?
- Yes. Some practices use Cerbo for clinical charting and Thimble Portal for patient engagement, automation, and billing. The platforms can run in parallel, with Thimble Portal handling the patient-facing experience and Cerbo handling the clinical documentation.
- How much does Thimble Portal cost compared to Cerbo?
- Cerbo charges $228 per provider per month with a $1,195 setup fee. Thimble Portal's clinic tier starts at $149/mo flat for solo practitioners or $349/mo plus $99 per additional provider. Thimble Portal includes automation, email, SMS, and the patient portal. Cerbo requires separate tools for marketing automation and advanced patient communication.
- Does Thimble Portal support insurance billing?
- No. Thimble Portal is designed for cash-pay, membership, and subscription-based practices. If you bill insurance, Thimble Portal is not the right fit. For cash-pay functional medicine and DPC practices, the Stripe-based billing infrastructure is more flexible and lower cost than insurance billing tools.
- What makes Thimble Portal's automation better than Cerbo's?
- Thimble Portal has a visual automation builder with 27 action types, conditional branching, A/B testing, delays, and 20+ trigger types. Cerbo has basic appointment reminders and simple email triggers. The difference is comparable to the gap between a professional marketing automation platform and a basic email tool.