Marissa Esguerra - Email & Phone Number

Senior Administrative Assistant to Vice President at Ultragenyx Pharmaceutical Inc.

Marissa Esguerra is based out of San Francisco Bay Area and works at Ultragenyx Pharmaceutical Inc. as Senior Administrative Assistant to Vice President.

Marissa Esguerra's Contact Information

Marissa Esguerra's Work email

m*****@ultrag***.com

Valid

Latest update

October 24, 2025

Location

San Francisco Bay Area

Marissa's current employer

Ultragenyx Pharmaceutical Inc.

Description

Ultragenyx is focused on developing first-ever approved treatments for rare and ultrarare diseases and moving the rare disease community ...

Website

ultragenyx.com

HQ Location

Novato, California, United States

Number of employees

501-1000

Industry

Biotechnology Research

Latest update

April 30, 2024

Read about Ultragenyx Pharmaceutical Inc.

Frequent questions about Marissa Esguerra

What company is Marissa Esguerra working for?

Marissa Esguerra works for Ultragenyx Pharmaceutical Inc..

What is Marissa Esguerra's function at Ultragenyx Pharmaceutical Inc.?

Marissa Esguerra is Senior Administrative Assistant to Vice President at Ultragenyx Pharmaceutical Inc..

Where is Marissa Esguerra based?

Marissa Esguerra is based out of San Francisco Bay Area.

What is Marissa Esguerra's work email address?

Marissa Esguerra's professional email address is m*****@ultrag***.com

Who are Marissa Esguerra's co-workers?

Marissa Esguerra's colleagues are Beverley Skaggs, Emil Kakkis, Daniel Welch, Howard Horn, Carolyn Wang, Nesredin Mussa, Biviana Villa, Sharyl Fyffe-Maricich, Nina Thomas, Stanley Krolczyk, Francesco Bibbiani, Paul Wickman, Khandan Baradaran, David Libby, Nishant Pansari, John Hogan, Chris Hamblett, Patricia Costa-Giomi, Michael Kennedy, Kemi Olugemo, Priscille Poitrinal, Siegfried Hackl, Paul Elson, Lisa Dilworth, Sunil Karnawat, Rüdiger Schulze, Mariska Mulder, Sarah Glass, Bria Martin, Scott Nakashian, Michael Forouhari, Sue Marrichi, Jessica Riviere, Andrea Tuck, Anisha Marni.

Marissa's co-workers

Beverley Skaggs

Executive Assistant to President & CEO

Emil Kakkis

Founder, Chief Executive Officer and President

Daniel Welch

Chairman of the Board

Howard Horn

Chief Financial Officer and Executive Vice President, Corporate Strategy

Carolyn Wang

SVP, Global Corporate Communications

Nesredin Mussa

Vice President, Global Head of CMC, AD and QC

Biviana Villa

Laboratory Operations Coordinator

Sharyl Fyffe-Maricich

Vice President of Molecular and Cell Sciences, Research

Nina Thomas

Vice President, Global Health Economics & Outcomes Reseach and Global Medical Information

Stanley Krolczyk

VP Global Medical Affairs, Ultragenyx Pharmaceutical Inc

Francesco Bibbiani

Vice President Global Clinical Development

Paul Wickman

SVP, Intellectual Property

Khandan Baradaran

VP Regulatory CMC

David Libby

Senior Vice President-Region Head North America

Nishant Pansari

Vice President, Corporate controller

John Hogan

Vice President, Global Clinical Operations

Chris Hamblett

Vice President, Business Development

Patricia Costa-Giomi

Vice President, International Reg Affairs

Michael Kennedy

Vice President Supply Chain

Kemi Olugemo

Vice President, Global Clinical Development

Priscille Poitrinal

VP, Head of Market Access & Pricing Europe

Siegfried Hackl

Senior Vice President Product Supply

Paul Elson

Vice President, Market Access Channel Operations & Patient Engagement

Lisa Dilworth

Vice President, Disease Monitoring Programs

Sunil Karnawat

Vice President, Global Market Access and Commercial Operations; Chief of Staff, Commercial

Rüdiger Schulze

Vice President & General Manager, Germany and Central / Eastern Europe

Mariska Mulder

Vice President, Head of Regulatory Affairs, EMEA

Sarah Glass

Senior Vice President, Global Brand Strategy

Bria Martin

Vice President, Culture & Organizational Strategy

Scott Nakashian

Vice President, Head of Global Supply Chain Management

Michael Forouhari

GxP Training Coordinator and Learning Management Systems Administrator

Sue Marrichi

Vice President and Site Head, Gene Therapy Manufacturing Facility (GTMF)

Jessica Riviere

Vice President of Patient Advocacy and Patient Engagement

Andrea Tuck

Vice President, Global Rewards & HR Operations

Anisha Marni

Quality Control Co-op

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