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

Dr. Patricia Litonjua Santa Maria Fernandez, MD

Individual provider Occupational Medicine Physician · NPI 1528254240

Dr. Patricia Litonjua Santa Maria Fernandez, MD is an Occupational Medicine Physician in Ontario, 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.

See every abbreviation used in this directory →

Practice location Address checks out

59 S Milliken Ave Ste 100
Ontario, CA 91761-7811
Phone: (909) 605-8888
Fax: (909) 605-8855
Show map & directions

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

Specialties & licences

Occupational Medicine Physician (primary) Taxonomy 2083X0100X · Licence A67336 (CA)

Record details

NPI number1528254240
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 17, 2007
Last updated in NPPESJuly 8, 2015

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