Head-to-head · WeighScore
Knownwell vs Rivas Medical Weight Loss
The verdict
Knownwell takes it — 66.9/100 to 55.6/100.
Knownwell grades higher on WeighScore, our editorial score across cost value, dose & formulation, clinical oversight, labs & monitoring, fulfillment and contract terms. Knownwell is a weight-inclusive metabolic and primary care company co-founded by obesity-medicine specialist Dr.
We may earn a commission if you start care through some of these links, at no extra cost to you. It never moves the WeighScore, which is the weighted average of the six factors shown for every provider, and what we write about a provider is the same either way. See our disclosure.
Factor by factor
The same six graded dimensions, side by side. See the methodology.
The numbers
| Metric | Knownwell | Rivas Medical Weight Loss |
|---|---|---|
| WeighScore | 66.9/100 | 55.6/100 |
| Grade | C | C |
| Scorecard rank | #180 | #438 |
| Semaglutide | Not disclosed | Not disclosed |
| Tirzepatide | $349/mo (brand Zepbound) | Not disclosed |
| Coverage | All 50 states | 3 states |
| Brand-name access | Yes | Compounded only |
| Oral / sublingual | Yes | Injection only |
Graded #180 · C
Strengths
- Co-founded by obesity-medicine specialist Dr. Angela Fitch
- Branded FDA-approved GLP-1s (Wegovy, Zepbound, Ozempic, Saxenda)
- Official LillyDirect provider and Novo Wegovy-pill telehealth partner
- Accepts insurance, copays as low as $25 for covered patients
- Weight-inclusive care with dietitians and health coaches
Where it loses points
- Specific self-pay monthly medication prices not transparently posted
- In-person clinics limited to four metro areas
- Branded-only focus can mean higher cost than compounded routes
Graded #438 · C
Strengths
- Physician-founded (Paul Rivas MD) with 15 clinics plus telehealth
- Flat price for any dose; weekly provider visits included in every payment
- Offers both compounded semaglutide and tirzepatide
Where it loses points
- Expensive: about $498/mo for semaglutide and $715/mo for tirzepatide (billed weekly)
- Only available in Maryland, Virginia, and Florida
- Weekly-visit concierge model requires more frequent engagement than mail-order
Also worth a look
Neither is our top-graded pick — CoreAge Rx leads the scorecard
Across all 499 providers, CoreAge Rx grades highest at 91.8/100 (A−). Top of the scorecard: flat transparent pricing, both molecules, nationwide — no teaser-rate games.
Pricing/verification reflect each provider's public disclosures at last grading; the WeighScore is our editorial judgment per the methodology. Prices change — confirm on each provider's site. Not medical advice; see our disclosure.