Summary

Dr. Maruja Diaz Arjonilla specializes in endocrinology, diabetes and metabolism, bringing 36 years of experience to her practice. She earned her medical degree from Universidad Central de Venezuela and completed her residency at UCSF - Fresno in 2007, followed by a fellowship at Harbor UCLA Medical Center in 2009. Dr. Diaz Arjonilla is fluent in both Spanish and English.

Dr. Diaz Arjonilla practices at Saint Joseph Hospital Orange and sees patients in Orange, California. She focuses on treating type 2 diabetes in both adults and children, as well as managing serious blood sugar emergencies. Her expertise includes performing comprehensive metabolic panels and thyroid hormone tests to monitor patients' overall health. Patients rate her services at 2.3 out of 5 stars.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 2.3
  • 36 years of experience
  • 27 insurance plans accepted
  • speaks Spanish, English
  • Harbor UCLA Medical Center
  • 7 written reviews
  • 2 specialties
  • 19 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 1 office location
  • Female

Office Location

St. Joseph Heritage Orange - Chapman

2501 E Chapman Ave Ste 203Orange, CA 92869

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Dr. Maruja Del Valle Diaz Arjonilla, MDDr. Alma MartiniDr. Ana Carolina Rios ChenDr. Christina Marie Turner, MD
Endocrinology, Diabetes & MetabolismEndocrinology, Diabetes & MetabolismEndocrinology, Diabetes & MetabolismEndocrinology, Diabetes & Metabolism
Accepts New Patients
2.3 
36 Years of Experience 11 Years of Experience 7 Years of Experience
Virtual Visit Available No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Spanish, English
Orange , CADuarte , CAOrange , CARancho Cucamonga , CA
Med School: Universidad Central de Venezuela Med School: Medical University Sofia Faculty Of Medicine Med School: Universidade De Brasilia (Unb) Faculdade De Medicina
Current Profile
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Insurance Plans Accepted by Dr. Maruja Del Valle Diaz Arjonilla

  • Accepts Medicare
  • Aetna - HMO
  • Aetna Medicare Advantage HMO
  • Aetna Medicare Advantage PPO
  • Aetna PPO
  • Anthem Blue Cross HMO
  • Anthem Blue Cross Medicare Advantage
  • Anthem Blue Cross Medicare PPO
  • Anthem Blue Cross PPO
  • Blue Shield of CA HMO
  • Blue Shield of CA HMO - Trio
  • Blue Shield of CA Medicare Advantage
  • Blue Shield of CA PPO
  • Cigna HMO
  • Cigna PPO
  • Coventry/First Health PPO
  • Health Net - HMO
  • Health Net - Medicare Advantage
  • Health Net PPO
  • HealthSmart (Interplan) PPO
  • Multiplan PPO
  • Providence Health Plan - Medicare Advantage
  • SCAN Medicare Advantage
  • TriWest - Tricare
  • United Healthcare HMO
  • United HealthCare PPO
  • US Family Health Plan - TriCare
  • Vivity by Anthem Blue Cross

Medical Specialties

Dr. Maruja Del Valle Diaz Arjonilla has the following 2 specialties

Specialty Expertise

Dr. Maruja Del Valle Diaz Arjonilla has the following 19 areas of expertise

  • Acromegaly
  • Addison Disease
  • Cancer
  • Cushing Disease
  • Diabetes
  • Diabetes (Types I & II)
  • Diabetes, Type 2
  • Endocrinology & Metabolism
  • Fatigue
  • Gland Issues
  • Growth Disorders
  • Hormones
  • Hyperthyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Lipid Metabolism Disorders
  • Nutrition Disorders
  • Obesity
  • Thyroid Diseases

Certifications, License, & Education

36 Years Experience

MEDICAL LICENSE

Medical Doctor, California, 2026, Active

EDUCATION & TRAINING

Fellowship

Harbor UCLA Medical Center2009

Residency

UCSF - Fresno2007

Internship

Universidad Central de Venezuela1992

Medical School

Universidad Central de VenezuelaGraduated in 1990

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Frequently Asked Questions

Is Dr. Maruja Diaz Arjonilla accepting new patients?
Dr. Maruja Diaz Arjonilla is accepting new patients on Vitals. View Dr. Maruja Diaz Arjonilla's profile on Vitals to make an appointment.
Does Dr. Maruja Diaz Arjonilla accept my insurance?
You can see the insurance plans that Dr. Maruja Diaz Arjonilla accepts on their Vitals profile.
Which hospitals is Dr. Maruja Diaz Arjonilla affiliated with?
Dr. Maruja Diaz Arjonilla is affiliated with Saint Joseph Hospital Orange.
How can I make an appointment with Dr. Maruja Diaz Arjonilla?
You can find contact information for Dr. Maruja Diaz Arjonilla here on Vitals.
What languages does Dr. Maruja Diaz Arjonilla speak?
Dr. Maruja Diaz Arjonilla speaks Spanish and English.

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