Michael W. Chien, MD
Listed as an allergist, with a practice address in Fontana, California.
Practice location 1
9961 Sierra Ave
Fontana, CA 92335
From the records
- Specialty
- Allergist
- Records
- National provider registry only, updated November 2021.
- Registry record
- Last updated November 2021
- NPI
- 1689741555 (national provider registry)
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From CMS’s Doctors and Clinicians file (October 2026) and the national provider registry, NPPES (October 2026). Listings are free and in alphabetical order; we don’t rate or recommend doctors. How we list doctors