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To choose a St. Joseph Hospital physician, call 714-633-DOCS (3627) for a referral.

Sinda Althoen M.D.

The St. Joseph Hospital Clinical Institute is a professional organization of St. Joseph Hospital doctors who agree to practice the highest quality medicine using evidence-based medical practice standards.
Primary Specialties Pediatrics  (BoardCertified)
Other Specialties/Certifications
Areas of Interest Childhood Obesity
Preschool Assessment
Pediatric Infections
Pediatric & Adolescent Medicine
Infant Care
Adoption Screening
Abnormal Menses
Adolescent Health
Urgent Care
Teen Contraception
Affiliation St. Joseph Heritage Medical Group
Physician Bio
Philosophy of Care
I choose pediatrics because I truly enjoy working with children, and I appreciate that families are willing to make healthy changes for their children. I enjoy the spirit and creativity of children, and the sweet, open optimism that they possess. My goal as a pediatrician is to help guide children into a healthy, happy adulthood. My father is also a pediatrician and has always been a big role model for me. I seek to make a difference in peoples’ lives while having as much fun as he does every day.

In my free time, I enjoy reading, spending time with my family, and watching my garden grow.

Education LA County - Univ S CA Medical Ctr - 2004
LA County - Univ S CA Medical Ctr - 2006
Keck School of Medicine of University of Southern California - 2003
Primary Office
2212 E. Fourth Street #201 , Santa Ana, CA 92705   Map
Phone: (714) 288-3230
Fax: (714) 744-5294
Hours:Mon - Fri
9:00AM - 5:00PM
Handicap Access:Yes
Languages Spoken (in addition to English) Spanish
Gender Female
Insurance Accepted MCD - MEDICAID
MCR - MEDICARE
PPO - AFFILIATED HEALTH FUNDS
PPO - BEECH STREET
PPO - BLUE CROSS PRUDENT BUYER
PPO - FIRST HEALTH
PPO - INTERPLAN
PPO - HEALTH NET
PPO - ORANGE COUNTY FOUNDATION
PPO - PREFERRED HEALTH NETWORK (PPONEXT)
PPO - PRIVATE HEALTH CARE SYSTEMS (PHCS)
PPO - UNITED HEALTH CARE SYSTEMS
MCA - MEDICARE ASSIGNMENT
PPO - MULTIPLAN
MCA - MEDICARE ASSIGN
MDA - MEDICARE ASSIGN
MED - MEDICARE/MEDICAID
HMO - AETNA
PPO - AETNA
HMO - BLUE CROSS (CALIFORNIA CARE)
HMO - BLUE SHIELD OF CALIFORNIA
PPO - BLUE SHIELD OF CALIFORNIA
HMO - CIGNA
PPO - CIGNA
HMO - PACIFICARE
PPO - PACIFICARE
HMO - AETNA GOLDEN MEDICARE
HMO - BLUE SHEILD 65
HMO - SCAN
HMO - SECURE HORIZON
HMO - MEDICAL CALOPTIMA
HMO - CHOC HEALTH ALLIANCE
HMO - HEALTH NET
POS - GREAT WEST
PPO - GREAT WEST
PPO - PPO NEXT
POS - HEALTH NET
POS - CIGNA
POS - AETNA - MANAGED CARE CHOICE
POS - BLUE CROSS PLUS (POS)
POS - BLUE SHIELD OF CALIFORNIA (POS)
POS - PACIFICARE POS (UNITED HEALTHCARE)
EPO - AETNA ELECT CHOICE
EPO - COVENTRY (FORMERLY CCN/FIRST HEALTH
HMO - HEALTH NET SENIORITY PLUS
PPO - ANTHEM BLUE CROSS
HMO - UNITED HEALTHCARE OF CA
HMO - BLUE SHIELD NETVALUE
HMO - BLUE SHIELD SAVENET
HMO - BLUE SHIELD LOCAL ACCESS PLUS
Insurance ID Numbers Aetna HMO Commercial/Senior Provider ID# 820402
Blue Cross HMO Provider ID# (telephone enrollment) 2341017 
Blue Cross HMO Provider ID# (paper/web enrollment) 1BJ017
Blue Shield HMO Commercial Provider ID# 00A889780
Cigna HMO Provider ID# 5279771002
Health Net HMO Commercial Provider ID# 3203139136
Health Net HMO Senior Provider ID# 5147139136
UnitedHealthcare (PacifiCare) HMO Commercial/Senior Provider ID# 0183460042

Other insurances accepted: Most major PPO, POS and EPO plans, Medicare and Medicare supplement plans.
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