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PhD university professor with 15+ yrs of as educator and scientist
Felix R.

5.0 (35 ratings)

126 hours tutoring

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Hourly Rate: $75
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Response time: 6 hours

About Felix

Bio

I am an Associate Professor of Biochemistry & Biology and an elected Fellow of the American Academy of Allergy, Asthma & Immunology (FAAAAI). My work sits at the intersection of environmental exposures, immunology, and respiratory health equity. I lead mentee-integrated projects that analyze how bioaerosols, indoor dust, and chemical/physical pollutants shape immune and physiological responses—work advanced through collaborations and funded studies spanning CDC-, NIH-, HUD-supported efforts...

I am an Associate Professor of Biochemistry & Biology and an elected Fellow of the American Academy of Allergy, Asthma & Immunology (FAAAAI). My work sits at the intersection of environmental exposures, immunology, and respiratory health equity. I lead mentee-integrated projects that analyze how bioaerosols, indoor dust, and chemical/physical pollutants shape immune and physiological responses—work advanced through collaborations and funded studies spanning CDC-, NIH-, HUD-supported efforts and post-disaster research in Puerto Rico. I direct student-centered research via the Educational Biomarker Discovery Lab (EBDL) and the RIPLRT Institute, and I actively publish and present in exposure science, aerobiology, and immunology.

Across more than a decade in higher education, I’ve taught graduate and undergraduate courses including Biochemistry, Molecular Genetics, Immunology, Microbiology, Advanced Physiology, Biostatistics/Computational Biology–adjacent modules, and Science & Society. My training includes a Ph.D. in Microbiology (UPR–MSC), a postdoctoral fellowship in Environmental Health Sciences (Johns Hopkins), an ASM Science Teaching Fellowship, and extensive coursework in data science, genomics/bioinformatics, systems biology, and AI.

My teaching philosophy is to build inclusive, psychologically safe, and transformative learning environments where students feel seen, supported, and challenged. I normalize productive mistakes, promote values-driven mentorship, and help students venture beyond their comfort zones to master biochemistry, microbiology, immunology, genetics, computational methods, and public health with real-world relevance.

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Education

Southeastern Louisiana University
Biology Chemistry
University of Puerto Rico -Medical Sciences Campus
PhD
Johns Hopkins University School of Public Health
Other
  • Licensed teacher

Additional Languages

Spanish

Policies

  • Hourly Rate: $75
  • Rate details: 1-hr lesson minimum. Late cancellations (12 hrs prior) charged 50% / no-shows charged 100%. Materials due 2 hrs before session.
  • Lesson cancellation: 12 hours notice required

  • Background check passed on 9/23/2023

  • Your first lesson is backed by our Good Fit Guarantee

Schedule

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Approved Subjects

Biochemistry

Biochemistry

Experience: I am a scientist and educator with over ten years of experience teaching biological sciences, including Biochemistry, Microbiology, and Immunology, at the undergraduate and graduate levels at universities in the South Florida region. As an Instructor and later as an Assistant Professor and Associate Professor, I have taught Biochemistry across multiple academic years, helping students understand core concepts such as protein structure and function, enzyme kinetics, metabolism, bioenergetics, carbohydrates, lipids, amino acids, nucleic acids, and the molecular logic that connects biochemical pathways to human health and disease. My approach emphasizes clear explanations, step-by-step problem solving, and helping students move beyond memorization toward a deeper understanding of how biological systems work at the molecular level. Training: I completed my PhD in Microbiology at the University of Puerto Rico–Medical Sciences Campus in 2010 and postdoctoral training in Environmental Health Sciences at Johns Hopkins University in 2013. In addition to my scientific training, I proactively pursued formal preparation in evidence-based teaching practices, including a Science Teaching Fellowship from the American Society for Microbiology. Since then, I have cultivated a teaching philosophy centered on inclusive, psychologically supportive, and transformative learning environments where students receive validation, structure, guidance, and encouragement as they face challenging scientific material. My goal is to help students build confidence, strengthen analytical thinking, and develop durable learning strategies that support success in Biochemistry and related biomedical sciences.
Biostatistics

Biostatistics

I am an educator and scientist with more than 15 years of experience using biostatistics in biomedical, environmental health, and population-health research. My work has included study design, data cleaning, descriptive statistics, data visualization, hypothesis testing, confidence intervals, p-values, correlation, linear regression, logistic regression, survival analysis, longitudinal data analysis, and interpretation of statistical results. I have applied these methods to research questions involving asthma, respiratory infections, environmental exposures, immune biomarkers, cardiovascular outcomes, and health disparities. When working with students, I focus on helping them understand why a statistical method is appropriate, how to interpret results, and how to communicate findings clearly. I earned my PhD in Microbiology from the University of Puerto Rico–Medical Sciences Campus and completed postdoctoral training in Environmental Health Sciences and Epidemiological Studies at the Johns Hopkins Bloomberg School of Public Health. I also completed additional training in statistical reasoning, regression models, data science, genomic data science, systems biology, bioinformatics, and computational analysis through Johns Hopkins University, the Icahn School of Medicine at Mount Sinai, and the University of California San Diego. My computational experience includes R, Python, and MATLAB for statistical analysis, visualization, modeling, and reproducible research workflows. My teaching approach emphasizes clear explanations, step-by-step reasoning, and supportive guidance for students who may feel intimidated by quantitative material.
Epidemiology

Epidemiology

I am an educator and scientist with more than 15 years of experience applying epidemiological approaches to respiratory, environmental, infectious-disease, and public-health research. My work focuses on understanding how exposures, infections, immune responses, behaviors, and social or environmental conditions influence disease patterns in populations. I have experience with epidemiological study design, including cross-sectional, case-control, cohort, ecological, and longitudinal approaches. I also work with surveillance data, population-level datasets, environmental exposure data, and respiratory-health outcomes. I help students understand core epidemiology concepts such as incidence, prevalence, risk factors, exposure assessment, measures of association, confounding, bias, effect modification, causality, screening, and interpretation of public-health evidence. My approach emphasizes clear explanations, real-world examples, and helping students connect epidemiological concepts to disease prevention and public-health decision-making. I earned my PhD in Microbiology from the University of Puerto Rico–Medical Sciences Campus in 2010 and completed postdoctoral training in Environmental Health Sciences and Epidemiological Studies at the Johns Hopkins Bloomberg School of Public Health in 2013. I later expanded my interdisciplinary training in data science, systems biology, bioinformatics, and computational biology through Johns Hopkins University, the Icahn School of Medicine at Mount Sinai, and the University of California San Diego. This background allows me to teach Epidemiology from a broad public-health and biomedical perspective, connecting population-level patterns with microbiology, environmental exposures, infectious diseases, respiratory health, and health disparities. In addition to my scientific training, I completed formal preparation in evidence-based teaching practices, including a Science Teaching Fellowship from the American Society for Microbiology. My teaching philosophy centers on inclusive, sup
Genetics

Genetics

I am a scientist and educator with over a decade of experience teaching Genetics and related biological sciences at the undergraduate and graduate levels. As an Instructor, Assistant Professor, and now Associate Professor, I have helped students understand core Genetics topics such as Mendelian inheritance, Punnett squares, pedigrees, chromosome structure, DNA replication, transcription, translation, gene regulation, mutations, genetic variation, population genetics, microbial genetics, and the molecular basis of inherited and infectious disease. I have also taught Medical Genetics across multiple academic years, helping students connect inheritance patterns, DNA biology, and gene expression to human health, disease mechanisms, biotechnology, and modern genomic approaches. My sessions emphasize clear explanations, structured problem solving, and conceptual understanding. I help students move beyond memorizing vocabulary by showing how genes, chromosomes, proteins, cells, and traits are connected. Whether a student is working through inheritance problems, pedigree analysis, bacterial genetics, gene expression, or molecular mechanisms, my goal is to build confidence, scientific reasoning, and durable problem-solving skills. I earned my PhD in Microbiology from the University of Puerto Rico–Medical Sciences Campus in 2010 and completed postdoctoral training at Johns Hopkins University in 2013. My scientific background includes microbiology, molecular biology, immunology, environmental health, computational biology, and data-driven biomedical research. This training allows me to teach Genetics as both a foundational biological science and a practical framework for understanding heredity, gene function, microbial adaptation, human disease, biotechnology, and genomics. I also completed formal preparation in evidence-based teaching practices, including a Science Teaching Fellowship from the American Society for Microbiology during the 2014–2015 academic year. My teaching philosophy is centered on inclusive, supportiv
Microbiology

Microbiology

I am a scientist, educator, and Associate Professor with 15 years of university-level experience teaching biological sciences, including Microbiology, Immunology, Medical Microbiology, Biochemistry, and related health-science topics. My teaching experience spans undergraduate, graduate, and professional programs across universities in South Florida and Puerto Rico. Over the years, I have worked with students preparing for exams, strengthening foundational science knowledge, improving scientific reasoning, and building confidence in challenging courses. I earned my PhD in Microbiology from the University of Puerto Rico–Medical Sciences Campus in 2010 and completed postdoctoral training in Environmental Health Sciences at Johns Hopkins University in 2013. In addition to my scientific training, I have pursued formal preparation in evidence-based teaching, including a Science Teaching Fellowship through the American Society for Microbiology. This combination of research expertise and pedagogical training allows me to explain complex biological concepts in clear, structured, and practical ways. My teaching philosophy is centered on creating inclusive, psychologically supportive, and transformative learning environments. I believe students learn best when they feel respected, guided, and challenged with compassion. My goal is not only to help students understand the material, but also to help them develop the confidence, study strategies, and scientific thinking skills needed to succeed beyond a single course or exam.
Writing

Writing

Experience: I am a university professor, scientist, and writing mentor with a PhD in Microbiology, interdisciplinary postdoctoral training, and more than 15 years of experience teaching and mentoring undergraduate, graduate, and professional-level learners. I have extensive experience writing, revising, and evaluating scientific documents, including peer-reviewed manuscripts, research abstracts, grant proposals, fellowship materials, literature reviews, scientific reports, personal statements, statements of purpose, and application essays for graduate and professional programs. My writing support focuses on helping students and professionals strengthen clarity, organization, scientific reasoning, argument structure, evidence integration, and audience alignment. I also have experience chairing committees that evaluate application packages for students seeking admission into graduate and professional schools, which gives me insight into how reviewers assess academic readiness, intellectual maturity, writing quality, and fit. Training: My writing expertise is grounded in more than 10 years of teaching biological sciences in higher education, including Biochemistry, Microbiology, Immunology, Genetics, Biostatistics, Computational Biology, and Public Health. I earned my PhD in Microbiology from the University of Puerto Rico–Medical Sciences Campus and completed postdoctoral training in Environmental Health Sciences and Epidemiological Studies at the Johns Hopkins Bloomberg School of Public Health. I also completed additional training in data science, genomic data science, systems biology, and bioinformatics through Johns Hopkins University, the Icahn School of Medicine at Mount Sinai, and the University of California San Diego. In addition to my scientific and interdisciplinary training, I completed a Science Teaching Fellowship through the American Society for Microbiology, which strengthened my ability to guide learners through complex material using evidence-based teaching practices. I also serve as a standing m

Examples of Expertise

Felix has provided examples of their subject expertise by answering 8 questions submitted by students on Wyzant’s Ask an Expert.

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Felix R.'s Photo

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Ratings and Reviews

Rating

5.0 (35 ratings)
5 star
(34)
4 star
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3 star
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Reviews

Profound knowledge in Bioinformatics and Genetics

Felix possesses profound knowledge in bioinformatics and genetics. His real-life examples help to clarify the material and strengthen the understanding of concepts. The lessons with him are very interactive which is great for those who like being challenged and tested on concepts on the spot.

Soren, 1 lesson with Felix

He is excellent!!!!

Dr. Felix was an excellent tutor—patient, knowledgeable, and very supportive. He explained difficult concepts clearly and always encouraged confidence and academic growth. I truly appreciated his professionalism and dedication to helping students succeed.

Lau, 1 lesson with Felix

Exceptional Tutor

I had the pleasure of working with Dr. Rivera-Mariani, who provided invaluable assistance with my research paper in public health. Dr. Rivera-Mariani's expertise and guidance played a crucial role in shaping the overall quality of my work. One of the standout qualities of the tutor was Dr. Rivera-Mariani's unwavering commitment to ensuring a thorough understanding concepts relevant to my research. Dr. Rivera-Marian patiently explained complex ideas, breaking them down into digestible components, which greatly enhanced my comprehension of the subject matter for my paper. Furthermore, Dr. Rivera-Mariani demonstrated a remarkable level of accessibility and responsiveness. His constructive feedback significantly contributed to the refinement of my research paper. Overall, I am immensely grateful for Dr. Rivera-Mariani's expertise, dedication, and personalized approach, as he played a pivotal role in elevating the quality of my research paper. I highly recommend Dr. Rivera- Mariani! You will love him! Book him today, you will be happy you did.

Elizabeth , 7 lessons with Felix

Another Great Session

Dr Felix is so helpful with bioinformatics topics. He was able to give me real world examples in laymen’s terms so I could feel confident in the subject matter and complete my assignments. I recommend him to anyone seeking a tutor.

Leah, 2 lessons with Felix

Amazing!!!

Felix is so patient and knowledgeable and really does his best to help you learn and understand the concepts. He's not someone who will give you the answer straightaway but it is definitely for the better since it helps YOU to understand the content and make the connections with his guidance, and the content will stick around in your brain longer. After having him teach me about the various pathways (glycolysis, gluconeogenesis, PPP, TCA, etc.) I managed to raise my exam score by 30 points between exams! Would definitely recommend taking lessons with Felix :D

Usha, 20 lessons with Felix

Beyond helpful!

Dr Felix is so nice and understanding. I came into the session very frustrated after a week of struggling with a bioinformatics assignment on my own and left feeling much more confident in the content of my class. After a two hour session, he had helped me understand not only the “how” but the “why” of the assignment. I would recommend him to anyone in need of help.

Leah, 2 lessons with Felix

I enjoyed learning with Felix R!

Felix R is unquestionably well-versed in crafting persuasive proposals with a strong focus on constructing a compelling narrative. Our session started with his question: What are your research goals, and what do you hope to achieve through this endeavor? and that kept me thinking and revisiting many of my methods.

Haya, 2 lessons with Felix

Amazing teacher

Dr. Rivera-Mariani was extremely knowledgeable about immunology and able to help me despite many other tutors feeling uncomfortable answering my questions. He had immediate responses to my questions and asked questions during the tutoring session to allow me to apply the information I learned. Dr. Rivera-Mariani also looked at the lecture slides I sent him prior to the tutoring session so he knew what I was working with. In the hour I spent with him I was able to learn and clarify what my class had be learning for 3 weeks as well as fill in the gaps despite my countless hours of reading. I will be booking future tutoring session and I highly recommend Dr. Rivera-Mariani.

Michelle, 2 lessons with Felix

Very helpful Session!

Dr. Felix helped me with my biostatistics class, and he is very knowledgeable. He explained difficult concepts to me in details. He provides good tips and shares study habit with me so that I could do well in class. I highly recommend his session .

Sandy, 2 lessons with Felix

The best professional creative tutor on Wyzant

I had a lesson with Dr.Fleix on one of my complicated task. After Struggling to find the right touter. He helped me tremendously with this. If you looking for a quality work, advance degree and knowledge please book with him. He will excel your expectations. His teaching and organization styles is what you need. I will continue working with Dr. Felix.

Anonymous, 5 lessons with Felix
Hourly Rate: $75
Response time: 6 hours
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