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

Robert Amster Md-Grossmont Inc

Organization Emergency Medicine Physician · NPI 1528365731

Robert Amster Md-Grossmont Inc is an Emergency Medicine Physician in Tustin, California. Licensed in California. Registered with an NPI since 2011.

Licensed in
CA
In the registry since
2011
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

18231 Irvine Blvd Ste 204
Tustin, CA 92780-3432
Phone: (714) 389-5700
Fax: (714) 389-6973
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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 G34265 (CA)

Record details

NPI number1528365731
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Roibert Amster — Owner · (714) 389-5700
NPI enumeratedFebruary 24, 2011
Last updated in NPPESFebruary 24, 2011
Mailing address18231 Irvine Blvd, Ste 204, Tustin, CA 92780-3432

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