~ GregoryCastillo.MD.com ~

Dr. Gregory Castillo, a family physician in Valencia, CA, provides primary care for the entire family & can refer patients to a specialist if necessary.

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Dr. Castillo has one office in California where he specializes in Family Medicine. Learn more.

Dr. Castillo works with twenty-three doctors including Dr. Elaine Hollero and Dr. Christopher Avelino.

Hospital Affiliations

  • Henry Mayo Newhall Memorial Hospital

Languages Spoken  

  • English

Facey Medical Group  


26357 McBean Pkwy, Valencia, California 91355-4488

Office Hours

  Open Lunch Close
Mon 8:00 am 5:30 pm
Tue 8:00 am 5:30 pm
Wed 8:00 am 5:30 pm
Thu 8:00 am 5:30 pm
Fri 8:00 am 5:30 pm

Office Details

Doctor Specialty Family Medicine
Practice SpecialtyMulti-specialty
Group PracticeFacey Medical Group
Hospital Affiliation
  • Henry Mayo Newhall Memorial Hospital
Languages Spoken Arabic, English, French, German, Italian, Korean, Mandarin, Polish, Portuguese, Russian, Spanish, Tagalog, Vietnamese

Insurances Accepted  

Please contact the doctor’s office to inquire about insurance.