# Dr. B funding: rounds and investors

> Dr. B has raised $8.0M across 1 round since 2022. Investors include Founders Fund, Lerer Hippeau and Pareto Holdings. Every round with its source.

Source: https://millionrounds.com/company/dr-b (Millionrounds; every figure on the page links to its filing or article)

United States · [Venture startup](https://millionrounds.com/companies)

# Who invested in *Dr. B*

One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Healthcare

Funding summary Updated 26 Oct 2026

**$8.0M** raised across 1 round since 2022, from 1 source

- **Latest round:** Venture, $8.0M Aug 2022
- **Investors:** 4

See who backed them

## The rounds

- **Aug 2022** Venture **$8.0M** [Founders Fund](https://millionrounds.com/fund/founders-fund) [Lerer Hippeau](https://millionrounds.com/fund/lerer-hippeau) [Pareto Holdings](https://millionrounds.com/fund/pareto-holdings) [Edward Lando](https://millionrounds.com/fund/edward-lando) Source recorded

## Founders and team

From Dr. B's own website: 1 founder, 2 on the team.

**Cyrus Massoumi** CEO & Founder

- **Ariel Farias** Head of Technology
- **Sheila Pineda** Head of Service Operations

## Everyone who backed them

[Founders Fund](https://millionrounds.com/fund/founders-fund) VC firm **1** round

[Lerer Hippeau](https://millionrounds.com/fund/lerer-hippeau) VC firm **1** round

[Pareto Holdings](https://millionrounds.com/fund/pareto-holdings) VC firm **1** round

[Edward Lando](https://millionrounds.com/fund/edward-lando) Angel **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=dr-b).

## Quick answers about Dr. B

### Who invested in Dr. B?

Dr. B's investors include Founders Fund, Lerer Hippeau, Pareto Holdings and Edward Lando.

### How much has Dr. B raised?

Dr. B has raised $8.0M across 1 round since 2022.

### When did Dr. B last raise?

Dr. B's most recent round was a Venture of $8.0M in Aug 2022.

### What was Dr. B's biggest round?

Its most recent round, $8.0M in Aug 2022, is also its largest on record.

### Who backed Dr. B first?

Dr. B's first round on record, in Aug 2022, was backed by Founders Fund, Lerer Hippeau and Pareto Holdings and 1 others.

### What stage is Dr. B at?

Dr. B's latest named round is a Venture, in Aug 2022.

### Where is Dr. B based?

Dr. B is based in the United States.

## Companies like Dr. B

In the same sector, and raised in the last eighteen months.

[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**Rejuvenate Bio** $13M · Oct 2026](https://millionrounds.com/company/rejuvenate-bio)[**Clinical Ink** $24M · Oct 2026](https://millionrounds.com/company/clinical-ink)

## Find investors like these

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