Summary
Overview
Work History
Education
Skills
Timeline
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DIRK M. VAN OS

Irvine,CA

Summary

Award winning strategic Rare Disease Account Manager with specialty pharmaceutical and biologic experience spanning complex/rare disease. Consistent Top 10% ranking throughout my career. Successful sales growth in every territory managed. Launched several products and indications across various disease states collaborating with internal and external stakeholders to maximize a patient centric sales approach.



Overview

19
19
years of professional experience

Work History

Senior Rare Disease Account Manager

Calliditas Therapeutics
06.2025 - Current
  • 1 of only 3 Rare Disease Account Managers promoted to Senior status nationally.
  • Consistently mentor colleagues regionally and nationally to achieve team objectives.
  • Consult with clinicians to better identify appropriate patients resulting in quarterly sales growth.
  • Work closely with training and marketing departments to generate new concepts to advance sales and training.
  • Consistently achieve or exceed company-defined sales goals.
  • Call Points: Nephrology, Internal Medicine, Mid-Levels
  • Institutions: USC, UCI
  • Product/Disease State: Tarpeyo (IgA Nephropathy)

Rare Disease Account Manager

Calliditas Therapeutics
01.2023 - 05.2025
  • Promote 1st and Only Disease Specific medication approved by the FDA for IgA Nephropathy to Nephrologists throughout the Greater Los Angeles Area.
  • Strategically leveraged my selling skills with rapport building, resulting in a successful launch to date.
  • National Field Sales Trainer.
  • Exceeded all corporate driven sales goals YTD.
  • Currently, ranked in top 30% of sales force (22/70) with 60+ new enrollments in 2024.
  • Consistent and successful HUB distribution pull-through.
  • Call Points: Nephrology, Internal Medicine, Mid-Levels
  • Institutions: USC, UCI
  • Product/Disease State: Tarpeyo (IgA Nephropathy)

Rare Disease Account Manager

Eversana
01.2022 - 01.2023
  • Promote 1st and Only Disease Specific medication approved by the FDA for IgA Nephropathy to Nephrologists throughout the Greater Los Angeles Area.
  • Strategically leveraged my selling skills with rapport building, resulting in a successful launch to date.
  • Successfully completed training on Mechanism of Disease, Mechanism of Action for new treatment; all while fully onboarding with a new company.
  • Exceeded all corporate driven sales goals YTD.
  • Currently, ranked in top 10% of sales force (5/37) with 60+ new enrollments YTD.
  • Inaugural Launch Year President's Club Award Winner.
  • Call Points: Nephrology, Internal Medicine, Mid-Levels
  • Institutions: USC, UCLA, Cedars Sinai, UCI
  • Product/Disease State: Tarpeyo (IgA Nephropathy)

Renal Sales Specialist

AstraZeneca, LLC
11.2020 - 01.2022
  • Promoted renal portfolio to Hospitals, Academic Institutions, Dialysis Centers and targeted physicians.
  • Strategically leveraged cross-functional partnerships in commercial and market access in a successful launch of 2 products.
  • Exceeded sales goals quarter over quarter 2021 resulting in consistently high rankings.
  • Gained formulary approval at several accounts: Loma Linda UMC, Arrowhead RMC, Eisenhower, San Gorgonio, Redlands Community Hospital, Community Hospital of San Bernardino and Desert Valley.
  • Implemented Guidelines for product access at specialty pharmacies rolled out regionally to >60 representatives.
  • Nominated by senior management to participate in 'LEAP' a leadership development course at AstraZeneca designated for top performers.
  • Call Points: Nephrology, Emergency Medicine, Internal Medicine, Hospitalists, Academic Institutions, Dialysis Centers
  • Institutions: Loma Linda University Medical Center, Arrowhead Regional Medical Center, Redlands Community Hospital, St. Bernardine's, St. Mary's, Eisenhower Medical Center, Desert Healthcare, Riverside University Healthcare
  • Products/Disease States: LOKELMA (Hyperkalemia), FARXIGA (CKD Progression)

Critical Care Specialist

La Jolla Pharmaceutical, Inc.
10.2019 - 11.2020
  • Promoted Critical Care/Infectious Disease portfolios to Hospitals, Academic Institutions, In-Patient Pharmacies and targeted physicians.
  • Strategically leveraged cross-functional partnerships in market access and reimbursement in a successful launch of 2 products.
  • Exceeded target sales goals for both products resulting in a consistent Top 3 ranking among peers.
  • Grew Physician/Staff comfort level for both products in targeted hospitals via a consultative sales approach to identify appropriate patients resulting in 155% sales growth in 2020.
  • Appointed to several Regional/National advisory teams to increase best practices with colleagues.
  • Call Points: Critical Care, Pulmonology, Thoracic Surgeons, Hospitalists, Infectious Disease, Pharmacy
  • Institutions: Sharp Health System, Scripps Health System, UCSD, UCI, Hoag, Memorial Care, Providence/St. Joseph Health, Hawaii Pacific Health, Queens Hospital.
  • Products/Disease States: GIAPREZA (Septic Shock), XERAVA (Complicated Intra-Abdominal Infections)

Account Manager

Otsuka America Pharmaceutical, Inc.
04.2011 - 10.2019
  • Promoted Renal/CNS portfolios to Hospitals, Academic Institutions, Clinics, Specialty Pharmacies and targeted physicians.
  • Strategically leveraged cross-functional partnerships in commercial access and reimbursement in a successful launch of promoted products.
  • Delivered >100% YOY business growth during tenure resulting in consistently high rankings.
  • Increased product utilization by developing a continuum of care to appropriately treat patients.
  • 2015 President's Club Award Winner.
  • Selected by management to work several national/regional conventions/congresses.
  • Call Points: Nephrology, Cardiology, Hospitalists, Psychiatry, Emergency Medicine, HUB Pharmacy
  • Institutions: Loma Linda UMC, Redlands Community, St, Bernardines, Riverside Community, Parkview Community, Temecula Valley, Eisenhower MC, Desert Regional MC, Arrowhead Regional, Corona Regional, Southwest Healthcare
  • Products/Disease States: SAMSCA (Hyponatremia), JYNARQUE (Polycystic Kidney Disease: rare disease), Abilify Maintena (once-monthly injectable antipsychotic)

Hospital Sales Representative

Merck & Co., Inc.
06.2006 - 04.2011
  • Promoted Infectious Disease portfolio and leading Glycoprotein IIb/IIIa Inhibitor to Hospitals, Academic Institutions, Specialty Pharmacies and targeted specialty clinics.
  • Strategically leveraged cross-functional partnerships in commercial access and reimbursement in successful sales growth of 2 products.
  • Managed $1.6MM territory with consistent YOY business growth during tenure.
  • Increased product utilization by developing a continuum of care to appropriately treat patients.
  • 2010 President's Club Award.
  • Selected by management to work several national/regional conventions.
  • Call Points: Interventional Cardiology, Hospitalists, Infectious Disease, In-Patient Pharmacy
  • Institutions: Loma Linda UMC, St. Mary's MC, St, Bernardines, Riverside Community, Parkview Community, Temecula Valley, Eisenhower MC, Desert Regional MC, Arrowhead Regional, Corona Regional, Southwest Healthcare
  • Products/Disease States: INTEGRILIN (Acute Coronary Syndrome), AVELOX/CIPRO (Antibiotics)

Education

Bachelor of Arts -

California State University, Fullerton
Fullerton, CA
06.1994

Skills

Areas of Expertise:

  • Injectable/infused products
  • Buy & Bill/ Specialty Pharmacy
  • KOL Development
  • Cardio-Renal/Pulmonary/Critical Care
  • HUB-Prescription Pull Through

Timeline

Senior Rare Disease Account Manager

Calliditas Therapeutics
06.2025 - Current

Rare Disease Account Manager

Calliditas Therapeutics
01.2023 - 05.2025

Rare Disease Account Manager

Eversana
01.2022 - 01.2023

Renal Sales Specialist

AstraZeneca, LLC
11.2020 - 01.2022

Critical Care Specialist

La Jolla Pharmaceutical, Inc.
10.2019 - 11.2020

Account Manager

Otsuka America Pharmaceutical, Inc.
04.2011 - 10.2019

Hospital Sales Representative

Merck & Co., Inc.
06.2006 - 04.2011

Bachelor of Arts -

California State University, Fullerton