Our Providers

S Reed Shimamoto, MD, FAAP

Dr S. Reed Shimamoto grew up in Montana and Colorado. He obtained his medical degree from the University of Colorado Health Sciences Center, in Denver, CO. He completed his Pediatric Residency at St. Joseph’s Hospital and Medical Center in Phoenix, AZ from 1997 to 2000 and served as Chief Resident 2000-2001. Along with Dr. Jain he then completed his Allergy & Immunology fellowship at National Jewish Health Center and University of Colorado School of Medicine in Denver from 2001 to 2003, Colorado where he was Chief Fellow and a member of the Medical Staff between 2002-2003. Dr. Shimamoto founded San Tan Allergy & Asthma in 2005, and has been featured in Phoenix Magazine’s “Top Docs” issues. He is currently a member of the American College of Allergy and Immunology, the American Academy of Allergy, Asthma and Immunology, The American Academy of Pediatrics and is Board Certified in Allergy & Immunology and Pediatrics. Dr. Shimamoto has lectured on asthma, allergies, anaphylaxis, food allergy and eosinophilic diseases at local and national programs. He is currently accepting new pediatric and adult patients. Dr. Shimamoto lives in Gilbert with his wife and daughters and enjoys responsible marine fish/reef keeping, gardening, swimming and cooking.

Neal Jain, MD, FAAP, FAAAAI

Dr Neal Jain is an Arizona native. He obtained his medical degree from the Medical College of Wisconsin and subsequently trained in Pediatrics at Phoenix Children’s Hospital where he served as a chief resident during 2001-2002. Both he and Dr. Shimamoto trained in Allergy, Asthma and Immunology at National Jewish Health Center and University of Colorado School of Medicine in Denver, Colorado. Dr. Jain was appointed Chief Fellow at National Jewish Health Center and was a member of the Medical Staff between 2003-2004. Prior to joining San Tan Allergy & Asthma in January 2010 , he practiced as an Allergist/Immunologist at Dean Health System in Madison, Wisconsin. Dr. Jain was also on faculty as a Professor of Medicine at the University of Wisconsin in the division of Allergy, Pulmonary, and Critical Care Medicine, where he supervised fellows in training. He has been an active member of the community serving as Medical Director for the Food Allergy Association of Wisconsin, Chair of The Wisconsin Asthma Coalition and on the Board of Directors for the National Eczema Association. Dr. Jain is President of the Arizona Allergy Society, a fellow of the American Academy of Allergy, Asthma, & Immunology and of the American Academy of Pediatrics. He is board certified by the American Board of Allergy & Immunology and Pediatrics. Dr. Jain is currently a regular contributing writer of the “House Call” segment for the magazine Living Without (http://www.livingwithout.com/) and has also been featured on a nationally syndicated television program to discuss new asthma technologies. He has authored or co-authored a number of studies published in peer-reviewed journals and continues to pursue clinical research. Dr. Jain is currently accepting new pediatric and adult patients. Outside of his professional responsibilities, Dr. Jain enjoys spending time with his family, playing doubles sand volleyball, and cooking.

Heidi Schmidt, PA-C

HeidiHeidi was born and raised in Arizona and has been able to explore most of the state during her time here. She grew up in Tucson and lived there until she was 17 years old and then moved up to Flagstaff to attend Northern Arizona University where she received her Bachelor’s Degree in Microbiology with minors in Chemistry and Psychology in 2006. While attending undergraduate school at NAU she was involved in a lot of community projects through AmeriCorps and jobs to help serve the people in her community. She was selected for the Gold Axe Award, participated in undergraduate Microbiology Research and was a member of Tri-Beta National Biological Honors Society and the Ambassadors of the College of Engineering and Natural Sciences (ACENS). She then went on to work for the American Red Cross as a Phlebotomist and then as a Research Technician at Midwestern University before pursuing her goal of becoming a Physician Assistant. She received her Masters of Medical Science in Physician Assistant Studies with a Bioethics Emphasis from Midwestern University in Glendale, Arizona in 2010 and spent the first 5 years of her career working in Family Medicine before making the decision to grow her knowledge in the field of Allergy, Asthma and Immunology and join our team at San Tan Allergy & Asthma this year. Heidi is a nationally board certified physician assistant, a fellow member of the American Academy of Physician Assistants and currently has memberships with the Arizona Allergy and Asthma Society and the American Academy of Physician Assistants in Allergy, Asthma and Immunology. In her free time she loves to play and coach soccer, compete in triathlons/duathlons and runs, along with going to football games and other sporting events or concerts with her husband, friends and family. She also loves spending time with her 2 dogs, Alli and Tres.

Amanda Hess, PA-C

Amanda 2015Amanda grew up in Maine. She graduated magna cum laude with her undergraduate degree in Neuroscience from Wilkes University in Wilkes-Barre, Pennsylvania in 2009. While at Wilkes, she was involved in student government and played ice hockey. She completed her physician assistant training at Midwestern University in Glendale, Arizona in 2012. While at Midwestern, she was involved in student council as well as many volunteer projects, including medical missions to Guatemala. After graduation, she moved to Virginia where she worked in emergency medicine/trauma for 2 years. She then decided to move back to Arizona, and prior to joining San Tan Allergy & Asthma, worked in family medicine for about 1 year.

Amanda is nationally board certified as a physician assistant and also a fellow of the American Academy of Physician Assistants (AAPA). She is a member of the Arizona Allergy Society, American Academy of Allergy, Asthma and Immunology as well as the European Association of Allergy and Clinical Immunology. She is also actively involved in the Academy of Physician Assistants in Allergy, Asthma and Immunology and serves on various committees.

Amanda is married and she and her husband enjoy hiking and exploring the outdoors with their two dogs, as well as travelling, cooking, and playing ice hockey.

Jim Baker, PA-C 
Jim grew up in the Syracuse, NY area and received a Bachelor of Arts degree in biology from the State University of New York (SUNY) at Potsdam. He then started a career in the pharmaceutical manufacturing industry working in microbiology laboratories, and eventually progressed into laboratory management.  After several years, he moved to Albuquerque, NM and continued his pharmaceutical career there. In time, he took his experience into the field to provide consulting services to a number of pharmaceutical and cosmetics companies.  Although this career was challenging and fulfilling, he decided to get closer to the patients he indirectly served in the pharmaceutical industry, and was fortunate to be accepted into the University of New Mexico’s Physician Assistant program. He graduated from this program with a Master of Science degree in Physician Assistant Studies and was awarded the Student Award for Professionalism at graduation.  He and his family moved to Arizona in 2016, and he is grateful to serve the patients who trust him with their care at San Tan Allergy & Asthma.

He has been married since the year 2000, and has two young boys he enjoys very much. Jim also enjoys practicing martial arts, traveling, and a good meal with family and friends

John Gedell, PA-C
John grew up on Long Island, New York. He attended Stony Brook University in New York and graduated in 2010 with a degree in Biology and minor in Women’s Studies. After obtaining his undergraduate degree, he enrolled in the physician assistant program at Touro College in New York and graduated with his Master of Physician Assistant Studies degree in 2012.

Upon graduation, John served in the United States Air Force as a Physician Assistant in Family Medicine at Vandenberg Air Force Base in Lompoc, California for 4 years. After serving his tenure in the Air Force, he decided to move to Arizona and joined San Tan Allergy & Asthma as a Physician Assistant in August 2016.

John’s interests outside of work include genealogy, travelling, and staying active.

Contact Us
Office: (480) 626-6600
Fax: (480) 626-6604
Office Hours


Allergy Injection Hours
Mon - Wed: 8am – 11:30am &
1pm - 4:30pm
Tue-Thu: 7:30am – 11:30am
& 1pm - 5:30pm
Fri: 8am – 2:30 pm
Closed: Saturday & Sunday
Location
4915 E. Baseline Road
Suite 112

Gilbert, AZ 85234-2966