Karin A. Pacheco, MD, MSPH

Karin A. Pacheco
Associate Professor
Department of Medicine
Division of Environmental and Occupational Health Sciences
Best Doctors in America® 2015 — Best Doctors, Inc.
Specialties and ConditionsSpecialties & Conditions
Research AreasResearch Areas
  • Environmental and Occupational Diseases

Special Interests

Clinical Interests 

Occupational asthma and allergies. Challenge Chamber for diagnosis of Occupational Asthma.

Dr. Pacheco specializes in the diagnosis and treatment of occupational asthma and allergic disease. She performs specific occupational allergen challenges to help diagnose occupational asthma as well as specific skin and patch testing to occupational allergens.


Research Interests

Genetic and environmental risk factors for asthma and allergy to laboratory animals in exposed research scientists and technicians.


University of Colorado Denver School of Medicine, MSPH, Preventive Med & Biometrics, Honors Thesis
New York University School of Medicine, MD, with Honors
New York University, Premedical Studies
Bryn Mawr College (Bryn Mawr, PA), BA, Economics & French Literature
L'Académie (Paris), Junior Year Abroad
National Jewish Health / University of Colorado Denver School of Medicine, Residency, Occupational Medicine
University of Colorado Denver, Internship and Residency, Internal Medicine
National Jewish Health / University of Colorado Denver School of Medicine, Fellowship, Allergy and Immunology

Awards & Recognition

2014: Best Doctors in America, Best Doctors, Inc.
1991-1992: Della McShane Fellowship in Medicine (Allergy)
1990-1991: Liz Claiborne, Inc. Fellowship in Immunology NYU MD with honors in microbiology First Prize for Student Research Bertran Gesner Memorial Prize for excellence in research in immunology

Board Certification

Internal Medicine
American Board of Internal Medicine Allergy and Immunology
American Conjoint Board of Internal Medicine and Pediatrics Occupational Medicine
American Board of Preventive Medicine

Professional Memberships

Fellow, American Academy of Allergy, Asthma and Immunology, Environmental and Occupational Respiratory Disease Section
American Thoracic Society, Environmental/Occupational Health Section
American College of Occupational and Environmental Medicine


Pacheco K, Maier L, Silveira L, Goelz K, Noteware K, Luna B, and C Rose. Association of CD14 alleles with chest symptoms and lung function in laboratory animal researchers. (manuscript in preparation) Pacheco K, Maier L, Silveira L, Goelz K, Noteware K, Luna B, Murphy J, Dubois R, and C Rose. Association of TLR4 alleles with symptoms and sensitization to laboratory animals. (manuscript in revision)

Pacheco K, McCammon C, Liu AH, Thorne PS, O’Neill M, Martyny J, Newman L, and Rose CS. Characterization of endotoxin and mouse allergen exposures in mouse facilities and research laboratories. Ann Occup Hyg 2006; 50 (6): 563-572. epub April 2006.

Pacheco KA, McCammon C, Liu AH, Thorne PS, O’Neill ME, Martyny J, Newman LS, Hamman RF, and Rose CS. Airborne endotoxin predicts symptoms in nonsensitized technicians and research scientists exposed to laboratory mice. Am J Resp Crit Care Med 2003; 167: 983-990.

Pacheco K, Tarkowski M, Negri J, Sterritt C, Rosenwasser L, and Borish L. The influence of diesel exhaust particles on mononuclear phagocytic cell-derived cytokines: IL-10, TGF-b and IL-1b. Clin Exp Immunol. 2001 Dec; 126(3): 374-83.

Academic Affiliations

Assistant Professor, Preventive Medicine and Allergy/Immunology, University of Colorado Denver

Teaching & Professional Positions

“Bioaerosols in Occupational Medicine,” A Problem-Based Learning Course
“History of Occupational Medicine” in Introduction to Occupational and Environmental Health

Contact Information

  • Office: 877.225.5654
  • Fax: 303.398.1452



  • National Jewish Health Main Campus
    1400 Jackson St.
    Denver, CO 80206

Patient Ratings

The Patient Rating score is an average of all responses to care provider related questions on our independent rating system, the Press Ganey Patient Satisfaction Survey.

Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our patient satisfaction survey.


Recommended to others

Explanation of problem/condition

Shows concerns for your questions

Includes you in decisions

Spoke using clear language

Amount of time spent with you

Confidence in your doctor


Comments are collected in our Press Ganey Patient Satisfaction Surveys. Patients are de-identified to protect confidentiality and patient privacy. Learn more about our patient satisfaction survey.

National Jewish Health PatientMay, 2016
I feel that I couldn't find a better doctor, her concern and attention have been a relief to me at one of the most frustrating times of my life!

National Jewish Health PatientMay, 2016
I would never hesitate to return for health reasons.

National Jewish Health PatientMay, 2016

National Jewish Health PatientMarch, 2016
*Dr. Pachico is always caring and concerned about my care/issues - She takes very good care of me.

National Jewish Health PatientJanuary, 2016
The staff was terrific. Everyone made me feel comfortable and less stressed about the procedures.