Drug Substance / API

We offer a comprehensive service offering to meet your drug or device compliance needs.

Contact us to the email

Mail Anytime

support@jeffyuen.com

Whether its a traditional API, fermented drug substance, or a critical starting material (including plasmids) our years of experience help us provide the best solutions.  Both small manufacturers or large pharmaceutical companies can rest assured that JYA experts can assess and resolve issues.

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Contact Experts

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Kevin Martin - Co Founder

    Name * Email * Subject Message

    Experts Associate

    Adam Slater <br> <div class="new">Sr Associate</div>

    Adam Slater
    Sr Associate

    Adam Slater
    Sr Associate

    A qualified and experienced  Microbiologist and Analytical Chemist who has completed EU QP training, with over 30 years’ experience in QC, R&D, QA and Regulatory Affairs functions. Has held both permanent and interim senior leadership roles in large pharma, biopharma, early phase CDMO clinical sites, and CROs....
    Adam Slater <br> <div class="new">Sr Associate</div>
    Andrew Campbell <br> <div class="new">Sr Associate</div>

    Andrew Campbell
    Sr Associate

    Andrew Campbell
    Sr Associate

    Andrew has more than 30 years of Quality Assurance experience in support of commercial and development activities. He specializes in design, remediation, and implementation of Quality Systems.  He is an accomplished Trainer, with a focus on practical application of training topics to day-to-day operations.  He also has extensive experience with Deviation Investigations, Change Control, Auditing and Inspection Readiness/Management.  Andrew brings a practical, common sense perspective to his projects.
    Andrew Campbell <br> <div class="new">Sr Associate</div>
    Bob Mehta  <br> <div class="new">Sr Associate</div>

    Bob Mehta
    Sr Associate

    Bob Mehta
    Sr Associate

    Bob Mehta (M.S., M.B.A., ASQ Fellow) is a Senior Associate at Jeff Yuen & Associates with over 28 years of experience in the pharmaceutical, medical device, combination product, and biotech industries. Bob has a broad background including QA/QC/Operations/Supplier Audits, and exFDA’s Warning Letter related remediation projects. He has co-authored a book titled “Practical Process Validation” and authored a book titled “Implementing ISO/IEC 17025:2017” and has authored several articles in Pharmaceutical Technology, MD&DI, and Quality Progress magazines.
    Bob Mehta  <br> <div class="new">Sr Associate</div>
    Christina Malin <br> <div class="new">Sr Associate</div>

    Christina Malin
    Sr Associate

    Christina Malin
    Sr Associate

    Christina is a seasoned biochemical engineer (BSChE) with 25+ years of experience in MS&T, Quality Assurance, CMC, and Compliance in the pharma and biotech industries. Her experience includes cell therapy and combo devices.  Christina provides expertise in GxP auditing, remediation, managing international CDMOs, CTOs and 3PLs, developing and optimizing production processes and QMSs, preparing technical regulatory documentation, and coaching leaders.
    Christina Malin <br> <div class="new">Sr Associate</div>
    David Browne  <br> <div class="new">Sr Associate</div>

    David Browne
    Sr Associate

    David Browne
    Sr Associate

    David oined Jeff Yuen & Associates in 2016 and brings over 25 years of experience in contract laboratory and drug manufacturing (CRO/CDMO) sector of the pharmaceutical / biopharmaceutical industry. David began his career as a bench chemist developing and validating analytical methods, before transitioning to Quality Control and senior QC leadership roles....
    David Browne  <br> <div class="new">Sr Associate</div>
    David Macaulay  <br> <div class="new">Sr Associate</div>

    David Macaulay
    Sr Associate

    David Macaulay
    Sr Associate

    David has over 26 years of experience in the pharmaceutical industry covering sterile injectables, oral dosages, biologics, and combination products. His experiences include quality oversight of formulation, filling, labeling and packaging of aseptic and terminally sterilized drug products; managing 483, Warning Letter and Consent Decree responses and commitments; exFDA pre-approval inspections (PAI); data integrity; environmental monitoring; and fermentation, purification and conjugation of biologic drug substances and drug products.
    David Macaulay  <br> <div class="new">Sr Associate</div>
    Doug Schmidt  <br> <div class="new">Sr Associate</div>

    Doug Schmidt
    Sr Associate

    Doug Schmidt
    Sr Associate

    Doug Schmidt has extensive knowledge in aseptic processing, quality control (microbiology and analytical), and quality management systems (QMS). Doug has a proven track record in developing practical systems for a diverse client set, coaching personnel to ensure sustainability in GMPs, remediating operational/QA/QC programs and conducting audits and assessments. Additionally, Doug is a qualified Lead Auditor. 
    Doug Schmidt  <br> <div class="new">Sr Associate</div>
    Jonathon Briggs  <br> <div class="new">Sr Associate</div>

    Jonathon Briggs
    Sr Associate

    Jonathon Briggs
    Sr Associate

    Jonathan Briggs has over 35 years of industry experience, including 24 years in Quality. His career has focused on quality, compliance and providing solutions to complex drug development challenges including drug product manufacturing and execution of clinical and non-clinical studies....
    Jonathon Briggs  <br> <div class="new">Sr Associate</div>
    Ken Mhuvich (exFDA) <br> <div class="new">Sr Associate</div>

    Ken Mhuvich (exFDA)
    Sr Associate

    Ken Mhuvich (exFDA)
    Sr Associate

    Ken Muhvich, Ph.D. is a microbiologist with extensive experience helping pharmaceutical and biopharmaceutical facilities establish effective viable microbial contamination control programs.  He spent several years at the exFDA and provides advice regarding the exFDA’s expectations for firms manufacturing sterile products. He also aids clients that are investigating microbial contamination events.
    Ken Mhuvich (exFDA) <br> <div class="new">Sr Associate</div>
    Mihaly Ligmond (exFDA) <br> <div class="new">Sr Associate</div>

    Mihaly Ligmond (exFDA)
    Sr Associate

    Mihaly Ligmond (exFDA)
    Sr Associate

    Mihaly joined Jeff Yuen & Associates in 2021 after serving with the United States Food and Drug Administration (exFDA) for over 32 years as both a Chemist and a Consumer Safety Officer (CSO). Most of Mihaly's service beng a CSO with Team Biologics. He retired from the exFDA in December 2020. Mihaly has extensive experience conducting inspections of aseptic operations, vaccines, fractionated products, allergenics, biotechnology products, and certain biologic medical devices. he received numerous exFDA awards during his exFDA career and was a Certified Level III Drug Investigator for many years.
    Mihaly Ligmond (exFDA) <br> <div class="new">Sr Associate</div>
    Mujtaba Ali <br> <div class="new">Sr Associate</div>

    Mujtaba Ali
    Sr Associate

    Mujtaba Ali
    Sr Associate

    Mujtaba is a Quality Executive with 30+ years of US experience in Operational, Compliance, and Quality best practices. His professional strengths include: • Small and Large Molecule, Cell Therapy, mAB, Sterile Products....
    Mujtaba Ali <br> <div class="new">Sr Associate</div>
    Mary Hintze <br> <div class="new">Sr Associate</div>

    Mary Hintze
    Sr Associate

    Mary Hintze
    Sr Associate

    Quality professional with 2 decades of experience including oversight of parenteral manufacturing and testing (focused experience in pharmaceutical microbiology), quality systems, CMC regulatory submissions and oversight of CDMOs and other outsourced GMP activities....
    Mary Hintze <br> <div class="new">Sr Associate</div>
    Michelle Pruett <br> <div class="new">Sr Associate</div>

    Michelle Pruett
    Sr Associate

    Michelle Pruett
    Sr Associate

    Michele Pruett studied Medicinal Chemistry at the Pharmacy School at the University of Buffalo, SUNY. Over the span of her 30 plus years in pharmaceutics, she has lead quality control laboratories, managed quality assurance departments, and helped remediate problem areas....
    Michelle Pruett <br> <div class="new">Sr Associate</div>
    Paul Laroquec (exHealth Canada) <br> <div class="new">Sr Associate</div>

    Paul Laroquec (exHealth Canada)
    Sr Associate

    Paul Laroquec (exHealth Canada)
    Sr Associate

    Paul is an aseptic processing expert especially as it relates to exFDA and European regulations.
    Paul Laroquec (exHealth Canada) <br> <div class="new">Sr Associate</div>
    Paul Leander <br> <div class="new">Sr Associate</div>

    Paul Leander
    Sr Associate

    Paul Leander
    Sr Associate

    Paul Leander has 25 years of experience working in Quality and Compliance in the biotech and pharmaceutical industry. With an in-depth knowledge of global health regulations and extensive expertise on GMP, GTP and GDP audits, Paul has led over 500 audits in the Americas, Europe and Asia....
    Paul Leander <br> <div class="new">Sr Associate</div>
    Steve Hagen <br> <div class="new">Sr Associate</div>

    Steve Hagen
    Sr Associate

    Steve Hagen
    Sr Associate

    Steven Hagen has worked in the biopharmaceutical sector for over 32 years. After attaining his PhD in Biochemistry, he worked for 14 years in positions of increasing responsibility in branded pharmaceutical development, with the last 11 years at Pfizer Global Research and Development....
    Steve Hagen <br> <div class="new">Sr Associate</div>
    Steve Lane <br> <div class="new">Executive Associate</div>

    Steve Lane
    Executive Associate

    Steve Lane
    Executive Associate

    Prior to joining Jeff Yuen & Associates Steve was the Head of the Reference Standards Division at the United States Pharmacopeia where he oversaw all USP method development and validation laboratories globally as well as all reference standard operations and support laboratories. Steve is a senior level executive with a diverse background. His broad expertise includes conducting GMP/ GCP audits to successfully leading large remediation teams to sitting in numerous interim Quality leadership roles.... 
    Steve Lane <br> <div class="new">Executive Associate</div>
    Suraj Baloda <br> <div class="new">Sr Associate</div>

    Suraj Baloda
    Sr Associate

    Suraj Baloda
    Sr Associate

    Suraj Baloda, Ph.D. is the Founder & President of SARMICON, LLC., located in Acton, MA, USA. Dr. Baloda is a pharmaceutical quality professional and microbiology expert with more than 35 years of global experience in the pharmaceutical, biotechnology, and related industries, and academia....
    Suraj Baloda <br> <div class="new">Sr Associate</div>
    Tamara Jordan <br> <div class="new">Sr Associate</div>

    Tamara Jordan
    Sr Associate

    Tamara Jordan
    Sr Associate

    Tamara is a results-oriented Quality Assurance leader with over 30 years of industry experience, having held both plant and corporate level positions with multi-national pharmaceutical and medical device firms....
    Tamara Jordan <br> <div class="new">Sr Associate</div>
    Tammy Lucik <br> <div class="new">Sr Associate</div>

    Tammy Lucik
    Sr Associate

    Tammy Lucik
    Sr Associate

    Tammy Lucik is a dynamic Quality professional with 30 + years of experience in Quality Management.  A senior level executive responsible for quality staff of 200+  for clinical and commercial drug substance and drug product manufacturing....  
    Tammy Lucik <br> <div class="new">Sr Associate</div>
    Terri Dodds (exFDA) <br> <div class="new">Sr Associate</div>

    Terri Dodds (exFDA)
    Sr Associate

    Terri Dodds (exFDA)
    Sr Associate

    Terri is an exFDA investigator with 16 years’ experience in all areas of pharmaceutical inspections, domestic and foreign. She was trained and qualified to participate with an elite group called the pharmaceutical inspectorate. As a consultant she has nearly 20 years of consulting experience with Jeff Yuen & Associates in almost all pharmaceutical and biological GMP auditing and remediation areas.
    Terri Dodds (exFDA) <br> <div class="new">Sr Associate</div>
    Tim Wheeler <br> <div class="new">Sr Associate</div>

    Tim Wheeler
    Sr Associate

    Tim Wheeler
    Sr Associate

    Tim has over 25 years experience in the pharmaceutical industry with expertise in API, solid-dose, and aseptic manufacturing facilities. Tim has worked extensively with laboratory and process automation. He began his career in the chemistry laboratory in analytical method development and technology transfer. 
    Tim Wheeler <br> <div class="new">Sr Associate</div>
    Tom Savage (exFDA) <br> <div class="new">Sr Associate</div>

    Tom Savage (exFDA)
    Sr Associate

    Tom Savage (exFDA)
    Sr Associate

    Tom Savage served for exFDA for 36 years as a chemist, a Regional Drug Lab Supervisor, the Deputy Director of the exFDA regulatory science office, and as a Senior Policy Advisor in the CDER Office of Compliance....
    Tom Savage (exFDA) <br> <div class="new">Sr Associate</div>
    Yong Cho <br> <div class="new">Sr Associate</div>

    Yong Cho
    Sr Associate

    Yong Cho
    Sr Associate

    Yong Cho is an SME in CMC, regulatory, cGMP, quality system, compliance, audit (50+ in 2021-2), drug product, fill-finish, packaging & labeling, CMO oversght, and risk/gap assessment & remediation, and drug-device combination products development to submissions (pre-INDs, INDs, EOP2, BLAs, EMA MAA MDR Tech File w/ GSPR).
    Yong Cho <br> <div class="new">Sr Associate</div>
    Paula Trost (exFDA) <br> <div class="new">Sr Associate</div>

    Paula Trost (exFDA)
    Sr Associate

    Paula Trost (exFDA)
    Sr Associate

    Paula served with exFDA for 23+ years, 6 of those years as a Microbiologist and Biologics Investigator and 17 of those years as one of the original members of Team Biologics. She retired from exFDA in December 2014 as a National Biologics Expert...
    Paula Trost (exFDA) <br> <div class="new">Sr Associate</div>
    Dan Larrimore<br> <div class="new">Sr Associate</div>

    Dan Larrimore
    Sr Associate

    Dan Larrimore
    Sr Associate

    Dan Larimore has over 25 years of experience in the pharmaceutical, biotechnology, and medical device industries. His career has focused on quality management, compliance, audit, and business development/acquisition evaluations. Prior to joining
    Dan Larrimore<br> <div class="new">Sr Associate</div>
    Govind Pandey<br><div class="new">Sr Associate</div>

    Govind Pandey
    Sr Associate

    Govind Pandey
    Sr Associate

    Dr. Govind S. Pandey is director of a Gamp Technologies Private limited. He is a Senior Associate of Jeff Yuen & Associates Inc. USA, who has over three decades of experience in the pharmaceutical industry. He is a professional experienced in sterile operations, solid oral dosage forms and API....
    Govind Pandey<br><div class="new">Sr Associate</div>
    Ramon Augusto Paz <br> <div class="new">Sr Associate</div>

    Ramon Augusto Paz
    Sr Associate

    Ramon Augusto Paz
    Sr Associate

    Born in Venezuela in 1957, migrated to New York City in 1974 where I completed my undergraduate studies and, in 1979, earned a BS degree in Mechanical Engineering from the “New York Institute of Technology”.
    Ramon Augusto Paz <br> <div class="new">Sr Associate</div>
    Ruth Wolff (exFDA)<br> <div class="new">Sr Associate</div>

    Ruth Wolff (exFDA)
    Sr Associate

    Ruth Wolff (exFDA)
    Sr Associate

    Ruth has a distinguished career that includes more than 40 years of combined industry and exFDA experience. Ruth’ distinguished career includes a Ph.D. in Cell Biology from MIT, Branch Chief at exFDA, member of the ICH Expert Working Group on Quality of Biotechnology Products, Chair of the CBER/CDER group working on ICH virus and cell substrate documentation, and held senior roles at Baxter Healthcare/Baxalta and Shire. She brings significant knowledge of biologic products, BLA’s, and product reviews.
    Ruth Wolff (exFDA)<br> <div class="new">Sr Associate</div>
    Grace Lee<br><div class="new">Sr Associate</div>

    Grace Lee
    Sr Associate

    Grace Lee
    Sr Associate

    Dr. Lee is a highly experienced biotech leader with 15+ years of experience with technical domain knowledge and a strategic business mindset in drug development. She has a diverse scientific background covering oncology, immunology, genome-editing, and CMC knowledge with an end-to-end business mindset for drug development from early to late stages....
    Grace Lee<br><div class="new">Sr Associate</div>

    Meet Our Team

    Jacquline Diaz-Albertini (ex-FDA)

    Mujtaba Ali

    Griet Atkins

    Suraj Baloda, Ph.D.

    Baron Bowers

    Gary Brennan

    David Browne

    Andrew Campbell

    Mark Dockter

    Terri Dodds (ex-FDA)

    Moj Eram, Ph.D.

    George Flynn (ex-FDA)

    Elvia Gustavson

    Mary Hintze

    Tania Hoffman

    Louise Johnson

    Peter Knauer

    Steve Lane

    Paul Larocque (ex-Health Canada)

    Dan Larrimore

    Paul Leander

    Mihaly Ligmond (ex-FDA)

    Rosalie Lowe

    Tammy Lucik

    David Macaulay

    Christina Malin

    Kevin McCulloch

    Bob Mehta

    Monique Mendoza

    Christine Morris (UK)

    Alicia Mozziachio (ex-FDA)

    Ken Muhvich, Ph.D. (ex-FDA)

    Govind Pandey, Ph.D. (India)

    John Patterson

    Ramon Augusto Paz

    Lara Gonzalez Ruiz (UK)

    Tom Savage (ex-FDA)

    Dr. Thoraff Schlosser (EU / QP)

    Doug Schmidt

    Adam Slater (UK)

    Paula Trost (ex-FDA)

    Kath Williams, Ph.D.

    Ruth Wolff, Ph.D. (ex-FDA)

    Chris Wubbolt

    Jeff Yuen (ex-FDA)

    Mahshid Zahed

    Testimonials

      Name * Email * Subject Message