Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Stephen Gassner, MD, MPH

Individual provider Emergency Medicine Physician · NPI 1538628524

Dr. Stephen Gassner, MD, MPH is an Emergency Medicine Physician in Orange, California. Licensed in California. Registered with an NPI since 2019.

Licensed in
CA
In the registry since
2019
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.

See every abbreviation used in this directory →

Practice location Address checks out

101 The City Dr S
Orange, CA 92868-3201
Phone: (714) 456-5239
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A177552 (CA)

Record details

NPI number1538628524
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MPH
Sole proprietorNo
NPI enumeratedMarch 18, 2019
Last updated in NPPESDecember 13, 2022
Certification dateDecember 13, 2022
Mailing address200 S Manchester Ave Ste 300, Orange, CA 92868-3219

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