Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Crystal Lee Irwin Warren, DO

Individual provider Emergency Medicine Physician · NPI 1235585639

Dr. Crystal Lee Irwin Warren, DO is an Emergency Medicine Physician in Fresno, California. Practices as a sole proprietor and works from 3 locations. Licensed in California.

Licensed in
CA
In the registry since
2016
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1303 E Herndon Ave
Fresno, CA 93720
Phone: (559) 450-3000
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Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 2051 Marengo St, Los Angeles, CA 90033-1352 — (323) 409-1000
  • 2051 Marengo St, Los Angeles, CA 90033-1352 — (323) 409-1000

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 20A15353 (CA)

Record details

NPI number1235585639
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedMay 4, 2016
Last updated in NPPESSeptember 9, 2022
Certification dateSeptember 9, 2022
Mailing address2100 Powell St Ste 400, Emeryville, CA 94608-1826

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