Dr. Alethea Poste

Family Physician

Dr. Alethea Poste

Family Physician

Single Oak Office

28780 Single Oak Dr, Suite 160 Temecula, CA 92590

Appointments: (951) 252-8650

Fax: (951) 252-8668

M-F: 7:00am-5:30pm

Get to know Dr. Poste

Watch this video of Dr. Poste to learn more about her and her medical philosophy.

Dr. Poste Bio

Dr. Poste grew up in San Pedro, CA where she embarked on her journey in the field of medicine. She attended California State University Long Beach, followed by the Universidad Autónoma de Guadalajara School of Medicine and New York Medical College, where she honed her medical expertise.

When her grandfather got seriously ill, Dr. Poste became his English translator during hospital visits. Witnessing his deep respect for his doctors ignited her passion for medicine. Encouraged by her supportive family, she set her sights on a career that would allow her to provide hands-on patient care, striving to make a meaningful impact on their well-being.

In her free time, Dr. Poste enjoys spending quality time with her husband, two children, and their cat and dog. She enjoys traveling and immersing herself in different cultures and languages, fluently conversing in English, Spanish, and Italian. When it comes to staying active and healthy, you can find her doing workouts on her Peloton.

Care Team Partnership

Suan Lee, PA-C

Dr. Sotis works closely with Physician Assistant, Susan Lee. Learn more about her here.

Book Appointment

Choose from the options below to book your next Appointment. Please note, this is much faster if you already have a MyChart account. To sign up for my chart, click HERE.


Get answers to your questions

An APP (Advanced Practice Practitioner) is either a Physician Assistant or Nurse Practitioner. While doctors and APP’s differ in their education level, APP’s can diagnose, treat and coordinate care as a regular Primary Care Physician would. 

Our doctors currently accept all insurance plans that our medical group, Regal accepts. However, as physicians’ patient panels become increasingly impacted, some physicians will only accept new Medicare Advantage patients only.

As a patient of Rancho Family, you’re welcome to see any provider within the group. All your medical records and chart notes are available to whichever provider you choose to schedule with, so if your doctor is unavailable, don’t worry! Our providers are here to make your care as cohesive as possible.

Becoming a new patient is easy! If you are 65+ and need help, please call our Patient Relations team at 951-225-6808. If you are not a senior or not on Medicare, you can call the office directly at 951-676-4193.