Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Robert Stephen Grosserode, MD

Individual provider Ophthalmology Physician · NPI 1982748232

Dr. Robert Stephen Grosserode, MD is an Ophthalmology Physician in Antioch, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3747 Sunset Ln
Antioch, CA 94509-6101 Not confirmed with CMS for 19 years — call before visiting
Phone: (925) 754-2300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence G51975 (CA)

Record details

NPI number1982748232
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 19, 2007
Last updated in NPPESJuly 8, 2007

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients465
Services billed 605 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Other providers in Antioch