We focus on you—your comfort, your concerns—as much as the treatment techniques and options. When we say, “The doctor will see you,” we mean exactly that. You’re not making an appointment with a nurse or physician assistant, just your doctor. We promise:
+ A one-to-one doctor-patient relationship.
+ Fewer forms, less waiting, more listening.
Your comfort is our main concern, and you need effective, long-term solutions. We take the time to help you take back control of your life.
Meet the Doctors
Dr. Francine Andrews +
Dr. Jeffrey Rumbyrt +
Dr. Paul Schkade +
Dr. Gary Siegel +
Affiliated Hospitals
Our physicians have staff appointments at a number of Denver Metro area hospitals. Though our hospital privileges do not allow us to directly admit patients, we are available at the following hospitals for consultation and to provide the hospitalist or primary care physician assistance in managing inpatients and coordinating outpatient follow-up.
View list +
Clinical Research
Our practice has had an active clinical research program since 1990. We have partnered with Western States Clinical Research, Inc., in multiple studies since 1995. Our research efforts focus on new developments in the treatment of allergic respiratory, nasal, and eye conditions. Details of our current studies can be discussed with your physician and found at wscrinc.com.
Our Staff
The staff of Denver Allergy and Asthma Associates is a special blend of people that keep our business, office and clinical areas in order. Charged with running five offices, four rural clinics, an allergen laboratory, and a business office, our staff combines a variety of business and clinical skills.
- Many of our staff have been with the practice for over 10 years
- Our clinical staff rotate through each of our five offices
Dr. Francine Andrews +
Dr. Jeffrey Rumbyrt +
Dr. Paul Schkade +
Dr. Gary Siegel
Resume/CV
Dr. Siegel’s Affiliated Hospitals
- Exempla Lutheran Medical Center
- North Suburban Medical Center
- St Anthony’s
Hospital North - St Anthony’s
Hospital Central - University of Colorado
- Children’s Hospital
Phone/Email
1.888.849.8424
email +
Dr. Gary L. Siegel, MD
Dr. Siegel grew up in Brooklyn, New York. He received his B.A. degree with Distinction as an English major at Lafayette College, and then received his M.D. degree from the State University of New York at Downstate Medical Center. His internship and residency in Pediatrics at Kings County Hospital in New York was followed by a Fellowship in Allergy and Immunology at National Jewish Hospital in Denver.
He served in the Army as Assistant Chief of the Allergy Department at Fitzsimons Hospital in Denver. Dr. Siegel is Assistant Professor of Medicine at the University of Colorado School of Medicine, where he has a teaching position at the Allergy Clinic. He is a member of the American Academy of Allergy, Asthma and Immunology and the American College of Allergy, Asthma and Immunology, and was President of the Colorado Allergy Society for its 1984-1986 term. He has been Treasurer and Board Member of the Aspen Allergy Conference, an annual national conference on the latest developments in the field of allergy, for 26 of its 28 year history.
He treats patients with all varieties of allergic difficulties but he particularly enjoys caring for asthmatic patients, from newly diagnosed to long-term chronic patients. His personal interests include biking, cross-country skiing, music and theater and he is a past President of the Denver Civic Ballet. He enjoys cooking, traveling with his wife and visiting their two sons, one a pediatrician, the other a graphic designer. He has recently started taking piano lessons.
Dr. Francine Andrews
Dr. Jeffrey Rumbyrt +
Dr. Paul Schkade +
Dr. Gary Siegel +
Resume/CV
Dr. Andrews’ Affiliated Hospitals
- Exempla Lutheran Medical Center
- North Suburban Medical Center
- St Anthony’s
Hospital North - St Anthony’s
Hospital Central
Phone/Email
1.888.849.8424
email +
Dr. Francine G. Andrews, MD
Dr. Andrews completed her undergraduate degree at the University of Houston Honors Program graduating Magna Cum Laude and earned her Medical Degree at the University of Texas at Houston. After finishing a residency in Pediatrics at the University of Texas Health Science Center at Houston, she received her formal fellowship in Allergy and Immunology at University of Colorado/National Jewish Hospital.
Dr. Andrews joined Denver Allergy & Asthma Associates P.C. in 1981 and is dedicated to maintaining the excellence of this practice.
Dr. Andrews has two daughters, one in college and the other in post-graduate education. In addition to her passion for practicing medicine, her daughters have provided her with abundant laughter, occasional tears, and most of all pride. She also enjoys the outdoors, gardening, art, reading, cooking, and politics.
Dr. Francine Andrews +
Dr. Jeffrey Rumbyrt
Dr. Paul Schkade +
Dr. Gary Siegel +
Resume/CV
Dr. Rumbyrt’s Affiliated Hospitals
- Exempla Lutheran Medical Center
- North Suburban Medical Center
- St Anthony’s
Hospital North - St Anthony’s
Hospital Central - University of Colorado
- Goodland Regional Medical Center
- Kit Carson County Memorial Hospital
- Vibra Hospital
Phone/Email
1.888.849.8424
email +
Dr. Jeffrey S. Rumbyrt, MD
Dr. Rumbyrt grew up in the Chicago area where his love of baseball (White Sox), White Castle hamburgers, and science was first kindled. He first became interested in medicine after visiting a genetics research lab at Argonne National Laboratory while in high school.
He joined Denver Allergy and Asthma Associates in 1994 and has served as its President since 2000. He has a special interest in the treatment of chronic hives, chronic sinusitis, and asthma and is an active lecturer on these subjects as well.
Dr. Rumbyrt has earned the reputation as one of the practices’s “traveling allergists” as he attends clinics twice a month in Eastern Colorado and Western Kansas, logging almost 10,000 miles per year in his reliable mini-van. The monotony of travel is mercifully broken by a constant supply of books-on-tape making him one of the best “least-well-read” doctors in Denver (a category yet to appear in 5280 magazine). His wife of over twenty years, daughter, and two sons occasionally giggle at his various voices and attempts at humor. He has difficulty with the driving games on the Wii. His free time is spent coaching youth soccer, basketball, and baseball and mining statistics for his fantasy baseball team.
Dr. Francine Andrews +
Dr. Jeffrey Rumbyrt +
Dr. Paul Schkade
Dr. Gary Siegel +
Resume/CV
Dr. Schkade’s Affiliated Hospitals
- Exempla Lutheran Medical Center
- North Suburban Medical Center
- St Anthony’s
Hospital North - St Anthony’s
Hospital Central - University of Colorado
- Lincoln Community Hospital
Phone/Email
1.888.849.8424
email +
Dr. Paul A. Schkade, MD
Dr. Schkade grew up in Texas. He earned a bachelors degree in biochemistry from the University of Texas System, his M.D. from the University of Texas Medical Branch and completed his residency at Brooke Army Medical Center in San Antonio.
After living in Germany and extensively traveling Europe for three years, he relocated to Colorado for his Allergy and Immunology training at the National Jewish Center and Fitzsimons Army Medical Center.
Dr. Schkade is Assistant Professor of Medicine at the University Of Colorado School Of Medicine, where he teaches medical students, residents and allergists in training from the National Jewish Center. He is active in clinical research studies that develop new treatments for allergies. Dr. Schkade frequently lectures to physicians in private practice regarding newer treatment modalities in the areas of allergy and asthma. Dr. Schkade has a special interest in treating patients with severe asthma, nasal allergies and hives. Twice per month he travels to rural clinics in central and eastern Colorado to treat clients in underserved areas. He is board certified in Allergy and Immunology and is a Fellow in the American College of Allergy and Immunology. Dr. Schkade enjoys hiking, woodworking, riding motorcycles and cooking with his wife. He also enjoys skiing with his two daughters.
Dr. Gary Siegel, MD
Education and Training
B.A. Degree:
Lafayette College – Easton, PA, 1963
M.D. Degree:
Downstate Medical Center – State University of NY, Brooklyn, NY, 1967.
Pediatric Internship & Pediatric Residency:
Kings County Hospital, Brooklyn, NY, July, 1967 to June, 1969.
Fellowship:
Pediatric Allergy and Clinical Immunology – National Jewish Hospital, Denver, CO July, 1969 to June, 1971
Army Service:
Assistant Chief, Pediatric Allergy Clinic – Fitzsimons General Hospital, Denver, CO, July, 1971 to July, 1973
Teaching Appointments
Assistant Clinical Professor, Attending Staff, Allergy Clinic – University of Colorado Health Sciences Center, Denver, CO, September, 1971 to present
Professional Societies
- Member, American Medical Association
- Member, Colorado, Denver and Clear Creek Valley Medical Societies
- Delegate, House of Delegates, Colorado Medical Society, 1984-86
- Member, American Academy of Allergy and Immunology
- Member, American College of Allergy and Immunology
- Secretary/Treasurer, Colorado Allergy Society, 1982-84
- President, Colorado Allergy Society, 1984-86
- Treasurer, Aspen Allergy Conference, Colorado Allergy Society, 1988-present
Bibliography
- Snyder, R. and Siegel, G., “An asthma triad,” Ann. All. 25:377, 1967.
- Snyder, R. and Siegel, G., “Eosinopenic response of asthmatic children to ACTH,” Ann. All. 25:426, 1967.
Practice Experience
Private practice in allergy & asthma – Denver Allergy and Asthma Associates, P.C., 1975 to present
Dr. Francine G. Andrews, MD
Education and Training
B.S. Degree:
University of Houston, Houston, Texas, 1973. Graduated magna cum laude.
M.D. Degree:
University of Texas at Houston, 1976.
Pediatric Residency:
University of Texas Health Sciences Center at Houston, June, 1976 to June, 1979
Fellowship:
Allergy and Clinical Immunology, National Jewish Hospital and University of Colorado Health Sciences Center, July, 1979 to June, 1981
Board Certification
- Pediatrics, 1982
- Allergy/Immunology, 1997
Professional Societies
- Member – Colorado Medical Society
- Member – Clear Creek Valley Medical Society
- Member – Colorado Allergy Society
Practice Experience
Private practice in allergy/asthma – Denver Allergy and Asthma Associates, P.C., 1981 to present
Dr. Jeffrey S. Rumbyrt, MD
Education and Training
B.A. Degree:
Washington University – St. Louis, Missouri; B.A. in Biology, 1984.
M.D. Degree:
Loyola University of Chicago, Stritch School of Medicine; M.D., 1989.
Training:
Loma Linda University Medical Center – Loma Linda, California; Residency in Internal Medicine, July, 1989 to June, 1992.
Fellowship:
National Jewish Center for Immunology and Respiratory Medicine – Denver, Colorado; Fellowship in Allergy and Immunology, July, 1992 to June, 1994
Honors:
- Honors graduate, Magna Cum Laude, 1984.
- Honors Thesis: Characterization of the Nontranscribed Spacer Sequence of Mouse Ribosomal DNA
- Dean’s List, Washington University, 1981-1984.
- Omicron Delta Kappa Leadership Fraternity, member, 1984.
- Washington University Sophomore Honor Society Member, President, 1982-1983.
- Janet S. Lewald Fellow in Basic Immunology, National Jewish Center, 1992-1994.
Board Certification
- American Board of Internal Medicine, 1992.
- American Board of Allergy and Immunology, 1995, 2003.
Professional Societies
- Fellow, American Academy of Allergy and Immunology
- Fellow, American College of Allergy and Immunology
- Colorado Allergy and Asthma Society
- Colorado Medical Society
- Clear Creek Valley Medical Society
- Christian Medical and Dental Society
- President, Denver Allergy and Asthma Associates, P.C., 2000-Present.
- Secretary/Treasurer, Colorado Allergy and Asthma Society, 2000-02.
- President, Colorado Allergy and Asthma Society, 2002-04.
- Treasurer, Metro West Medical Practice Association, 1998-2002.
- President, Metro West Medical Practice Association, 2002-Present.
Academic Affiliation
- Clinical Instructor, Department of Internal Medicine, University of Colorado Health Sciences Center, Denver, Colorado, 1994-1999.
- Assistant Clinical Professor of Medicine, Department of Internal Medicine, University of Colorado Health Sciences Center, Denver, Colorado, 2000-2004.
- Associate Clinical Professor of Medicine, Department of Internal Medicine, University of Colorado Health Sciences Center, Denver, Colorado, 2005-present.
Bibliography
- Book Chapters
- Rumbyrt JS, Schocket AL. Chronic Idiopathic Urticaria and Thyroid Disease. In: Heymann WR, editor. Thyroid Disorders with Cutaneous Manifestations. London: Springer Press, 2008.
- Rumbyrt JS, Schocket AL. Chronic Urticaria and Thyroid Disease. Immunol Allergy Clin N Am 2004;24:215-223.
- Scientific Publications
- Rumbyrt J, Carlson B, Nathan R. How To Get NPI Right: One Practice’s NPI Implementation Plan. Allergy Asthma Proc 2007; 28 (4):503-4
- Borish L, Aarons A, Rumbyrt J, Cvietusa P, Negri J, Wenzel S. IL-10 regulation in normal subjects and patients with asthma. J Allergy Clin Immunol 1996; 97:1288-96.
- Rumbyrt JS, Katz JL, Schocket AL. Resolution of chronic urticaria in patients with thyroid autoimmunity. J Allergy Clin Immunol 1995:96:901-5.
- Abstracts
- Cvietusa P, Rumbyrt JS, Aarons A, Negri J, Borish L. Expression and regulation of interleukin (IL) –10 in asthma. J Allergy Clin Immunol 1995;95:363. (abstract)
- Mascali J, Borish L, Aarons A, Rumbyrt JS, Klemm D. Sequence and characterization of the human interleukin (IL) –10 promoter. J Allergy Clin Immunol 1995;95:343. (abstract)
- Rumbyrt JS, Aarons A, Cvietusa P, Klemm D, Routes J, Borish L. Expression and regulation of interleukin (IL) –10 in allergic diseases. Am J Resp Crit Care Med 1994;149(1):A13. (abstract)
- Katz JL, Rumbyrt JS, Schocket AL. Resolution of chronic urticaria with thyroid therapy in euthyroid patients. J Allergy Clin Immunol 1994;93:281. (abstract)
- Rumbyrt JS, Aarons A, Cvietusa P, Klemm D, Routes J, Borish L. Expression and regulation of interleukin (IL) – 10 in allergic diseases. J Allergy Clin Immunol 1994;93:261. (abstract)
- Rumbyrt JS, Newman KB, Wood R, Nelson HS. Relapsing polychondritis mimicking asthma. Ann Allergy 1994;72:69. (abstract)
- Villareal MS, Rumbyrt JS, Kinney JL, Klaustermeyer WB. The clinical utility of serum IgE and eosinophil count in the evaluation of rhinitis: A new approach using probability theory. J Allergy Clin Immunol 1992;89:209. (abstract)
- Vesely DL, Kanabrocki EL Sothern RB, Scheving LE, Tsai TH, Greco J, Bushnell DL, Kaplan E, Rumbyrt JS, Sturtevant RP, et al. The circadian rhythm of the N-terminus and C-terminus of the atrial natriuretic factor prohormone. Chronobiol Int 1990;7:51-57.
- Thomas JR, Bolla RI, Rumbyrt JS, Schlessinger D. DNAse I –resistant nontranscribed spacer segments of mouse ribosomal DNA contain poly(dG-dT) poly (dA-dC). Proc Natl Acad Sci USA 1985;82:7595-8.
Clinical Trials
- I have served as the Principal Investigator for 25 clinical research trials from 1995 to 2010.
- I have served as a Sub-Principal Investigator for 4 clinical research trials from 1995 to 2010.
Community Service
- Local Coordinator, National Asthma Screening Program, American College of Asthma, Allergy, and Immunology (2000-2010).
- Volunteer Clinical Faculty Instructor, National Jewish Allergy fellowship program, serving in the University of Colorado Health Sciences Center Allergy Clinic, 1994-2010.
- 9 News Health Fair Participant, 2005-2010.
- Youth Soccer Coach, 2001-2010.
- Youth Basketball Coach, 2005-2010.
- Youth Baseball Coach, 2007-2010.
- Sunday School Teacher, Crossroads Church, Northglenn, Colorado, 2001-2009.
Personal
I am married to Kelley Lynn Rumbyrt, MD, and have three children, Molly, Luke, and Noah. My interests include reading, baseball history, and card collecting.
Dr. Paul A. Schkade, MD
Education and Training
B.S. Degree:
Biochemistry, University of Texas – Arlington/UT Health Science Center-Dallas, 1981.
M.D. Degree:
University of Texas Medical Branch, 1985.
Residency:
Internal Medicine Residency, Brooke Army Medical Center – San Antonio, Texas, 1985-1988.
Fellowship:
Allergy/Immunology Fellowship, Fitzsimons Army Medical Center – Denver, Colorado, 1991-1993.
Practice Experience
2007 – Present
Denver Allergy and Asthma Associates – Denver CO.
1995 – 2007
Private practice – Cooper Clinic – Large Multispecialty Group, Allergy/Immunology and Internal Medicine – Fort Smith, AR.
1995 – Present
Lecturer, University of Arkansas for Medical Sciences Area Health Education Center – Ft. Smith, AR.
1993 – 1995
Instructor – Allergy/Immunology and Internal Medicine, Fitzsimons Army Medical Center.
1993 – 1995
Private practice – Allergy and Clinical Research, Allergy and Asthma Consultants – Denver, CO.
1993 – 1995
Staff Physician – Department of Medicine, Fitzsimons Army Medical Center – Denver, CO.
1993 – 1995
Affiliate Faculty – Department of Adult Allergy, National Jewish Center for Allergy and Respiratory Medicine – Denver, CO.
1993 – 1995
Affiliate Instructor – Department of Medicine, University of Colorado Health Science Center – Denver, CO.
1988 – 1991
Chief, Internal Medicine Service, Asst. Chief, Department of Medicine, US Army Hospital – Nuremberg, Germany.
Academic Afficliations
1997 – Present
Clinical Assistant Professor – University of Colorado Hospital
1995 – 1997
Lecturer – University of Arkansas for Medical Sciences, Area Health Education Center – Ft. Smith, AR.
1993 – 1995
Staff Physician – Department of Medicine Fitzsimons Army Medical Center – Denver, CO.
1993 – 1995
Affiliate Faculty – Department of Adult Allergy, National Jewish Center for Allergy and Respiratory Medicine – Denver, CO.
1993 – 1995
Affiliate Instructor – Department of Medicine, University of Colorado Health Science Center – Denver, CO.
Board Certification
- American Board of Allergy and Immunology, 1993, 2003.
- American Board of Internal Medicine, 1988
Professional Societies
- Colorado Allergy Society, 1993
- American College of Allergy, Asthma and Immunology – Fellow, 1991
- American Academy of Allergy, Asthma and Immunology – Member, 1991
- American College of Physicians – Member, 1985
- American Medical Association – Member, 1982
Bibliography
- O’Connell MA, Pluss JL, Schkade PA, Henry AR and Goodman DL. Rhizopus Induced Hypersensitivity Pneumonitis in a Tractor Driver. Journal of Allergy and Clinical Immunology. 1995: 95(3) 779-780.
- Friesen CD, O’Connell MA, Schkade PA and Dyer PD. Latex Induced Asthma in a Dental Assistant. General Dentistry. 1996: 44 (5) 424-426.
- Schkade PA and Routes JM. Hypersensitivity Pneumonitis in a Patient with Hypogammaglobulinemia. Journal of Allergy and Clinical Immunology. 1996: 98(3) 710-712.
- Levy AM, Kita H, Phillips SF, Schkade PA, Dyer PD, Gleich GJ, Dubravec VA. Eosinphilia and Gastrointestinal Symptoms following Ingestion of Shiitake Mushrooms. Journal of Allergy and Clinical Immunology. 1998: 101(5) 613-620.
- Friesen CD, LeDoux RA and Schkade PA. Evaluation of in vitro cross-reactivity Among Trees. Annals of Allergy, Asthma and Immunology. 1996: 76(1) 69
- Ruggiero P, O’Connell MA and Schkade PA. Molecular Characterization and Possible Suppressor Activity in T-Cell Large Granular Lymphocytic Leukemia. Journal of Allergy and Clinical Immunology. 1995; 95(1) 360
- Dubravec VA, Schkade PA, Dyer PD and O’Connell MA. Effect of Beta-Adrenergic Antagonists on Intracellular Guanylate Cyclase Activity in Guinea Pig Airway Smooth Muscle. Journal of Allergy and Clinical Immunology. 1995; 95(1) 278
- Schkade PA, Harris RW, LeDoux R and Larsen LV. Effect of Temperature and Bacterial Contamination on Protein Yield During Pollen Extraction. Annals of Allergy 1995;74(1) 60
- Friesen CD, O’Connell MA, Schkade PA and Dyer PD. Latex Induced Asthma in a Dental Assistant. Annals of Allergy 1995;74(1) 91
- Ruggiero P, O’Connell MA and Schkade PA. Chronic Neutropenia due to T-Cell Large Granular Lymphocytic (LGL) Leukemia . Annals of Allergy 1995;74(1) 96
- Kumar SA, Spaulding HS, Sutherland RS, Schkade PA. The Effect of Chlorpheniramine Maleate on Urination in Men with Symptomatic Benign Prostatic Hypertrophy. Journal of Allergy and Clinical Immunology. 1994;93:177
- Schkade PA and Routes JM. Hypersensitivity Pneumonitis in a Patient with Hypogammaglobulinemia. Journal of Allergy and Clinical Immunology. 1994;93:300
- Kumar SA, Larsen LV, Ledoux RA, Schkade PA. Delayed Reaction to Banana. Annals of Allergy. 1994;72:68
- Schkade PA, Goodman DL, Weber RW. Evaluation of 210 Patients Referred for Chronic Urticaria and Angioedema. Annals of Allergy. 1994;72:97
- Schkade PA, Fortenbery ER, Weber RW, Vaughan TR. Anaphylaxis to Ranitidine Mediated by IgE. Annals of Allergy. 1993;70:59
Dr. Siegel
- Exempla Lutheran Medical Center
- North Suburban Medical Center
- St Anthony’s Hospital North
- St Anthony’s Hospital Central
- University of Colorado
- Children’s Hospital
Dr. Andrews
- Exempla Lutheran Medical Center
- North Suburban Medical Center
- St Anthony’s Hospital North
- St Anthony’s Hospital Central
Dr. Rumbyrt
- Exempla Lutheran Medical Center
- North Suburban Medical Center
- St Anthony’s Hospital North
- St Anthony’s Hospital Central
- University of Colorado
- Goodland Regional Medical Center
- Kit Carson County Memorial Hospital
- Vibra Hospital
Dr. Schkade
- Exempla Lutheran Medical Center
- North Suburban Medical Center
- St Anthony’s Hospital North
- St Anthony’s Hospital Central
- University of Colorado
- Lincoln Community Hospital