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

Dr. Frank D Herrera Jr., MD

Individual provider Preventive Medicine/Occupational Environmental Medicine Physician · NPI 1427305317

Dr. Frank D Herrera Jr., MD is a Preventive Medicine/Occupational Environmental Medicine Physician in Walnut, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2012
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1351 Bellavista Dr
Walnut, CA 91789-2845
Phone: (909) 224-4535
Fax: (909) 594-0446
Show map & directions

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

Specialties & licences

Preventive Medicine/Occupational Environmental Medicine Physician (primary) Taxonomy 2083P0500X · Licence G55248 (CA)

Record details

NPI number1427305317
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 9, 2012
Last updated in NPPESAugust 9, 2012