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

Dr. Nathan James Simarro, DDS

Individual provider Dentist · NPI 1144637661

Dr. Nathan James Simarro, DDS is a Dentist in Antioch, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2014
Specialties on file
3
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

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Practice location Address checks out

5201 Deer Valley Rd Ste #3B
Antioch, CA 94531
Phone: (925) 723-9090
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Public Health Dentistry (primary) Taxonomy 1223D0001X · Licence 63666 (CA)
Dentist Taxonomy 122300000X · Licence 63666 (CA)
General Practice Dentistry Taxonomy 1223G0001X · Licence 63666 (CA)

Record details

NPI number1144637661
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedJuly 16, 2014
Last updated in NPPESFebruary 18, 2026
Certification dateFebruary 18, 2026
Mailing address5201 Deer Valley Road Suite #3b, Antioch, CA 94531

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