St. Joseph and St. Jude Heritage Medical Group

Endocrinology • Orange, CA

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About

Endocrinology, Diabetes & Metabolism at St. Joseph and St. Jude Heritage Medical Group in Orange County offers board-certified endocrinology care with locations in Orange, Fullerton, and Yorba Linda, California. The clinic treats conditions including diabetes, thyroid disease, osteoporosis, and hormonal imbalances through advanced therapies, insulin pump therapy, and comprehensive diabetes education programs.

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Clinic Type

Endocrinology (multi-location group)

Address

Orange - 845 W. La Veta Ave. Suite 108, Orange, CA 92868; Orange - Chapman, 2501 E. Chapman Ave., Orange, CA 92869; Fullerton - Endocrinology, 100 E. Valencia Mesa Dr. Suite 105, Fullerton, CA 92835; Yorba Linda - Imaging, 4300 Rose Dr., Yorba Linda, CA 92886

Phone

P:(714) 628-3230

Email

ProvidenceOCHDContactCenter@providence.org

Opening Hours

Mon - Fri: 8 a.m. - 5 p.m.; Mon - Fri: 9 a.m. - 5 p.m.; Lab - Mon - Fri: 6:30 a.m. - 5 p.m.

Website

https://www.psjhmedgroups.org/Orange-County/Services/Endocrinology-Diabetes-Metabolism.aspx

Services Offered

Endocrinology, Diabetes & Metabolism

Team

Llanyee Isabella Liwanpo, MD — MD, Endocrinology
John Michael Jr. Gilbert, MD — MD, Endocrinology
Steven Ellis Saltman, MD — MD, Endocrinology
Maruja Del Valle Diaz Arjonilla, MD — MD, Endocrinology
Luminita Marieta Mann, NP — NP, Family Medicine
Jason Stanford Ling, MD — MD, Endocrinology
Charlaine Ida Williamson, NPC — NPC, Endocrinology
Becky Thai Muldoon, MD — MD, Endocrinology
Joseph Sherman Hsiao, MD — MD, Endocrinology

Insurance & Payment

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Languages Spoken

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Photos

What Patients Say

Overall sentiment across review platforms: mixed

St. Joseph Heritage Medical Group - Dr. Joseph Hsiao: 4.9/5 (231 ratings) (231 ratings)
St. Joseph Heritage Medical Group - Dr. Llanyee Liwanpo: 4.8/5 (285 ratings) (285 ratings)
WebMD - Dr. Maruja Diaz Arjonilla: 2.5/5 (13 ratings) (13 ratings)
St. Jude Heritage Fullerton - Endocrinology (overall location): 4.9/5 (1,590 ratings) (1,590 ratings)

Patients praise

High patient satisfaction ratings for many providers (e.g., 4.7-4.9 range)
Physicians praised for being attentive, kind, and explaining conditions/treatments clearly
Supportive office staff and access to specialized services like diabetes education and insulin pump therapy

Common complaints

Lower ratings reported for certain individual endocrinologists at the Orange location compared to others
Specific complaints noted in lower-rated reviews regarding patient interaction and satisfaction

"Dr Hsiao is great! He has a very affable manner, takes a time to listen and answer all the questions in an easy way to understand. I highly recommend him!"

— St. Joseph Heritage Medical Group Patient Review

"Dr. Liwanpo is amazing! She is so good explaining things clearly... Her demeanor is calm and reassuring. I always feel comfortable asking questions or for clarification."

— St. Joseph Heritage Medical Group Patient Review

Synthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].

In the News

Providence St. Joseph Hospital ranked a Top 10 Hospital in Los Angeles/Orange County — Jul 31, 2025
Providence St. Joseph Hospital in Orange nationally recognized by AHA — Jul 23, 2025
Providence St. Joseph Hospital in Orange First Hospital in California to Earn 'Advanced Chronic Obstructive Pulmonary Disease Certification' from The Joint Commission — Jun 8, 2026
Manu and Rika Shah Make Transformational Gift to Providence St. Jude Memorial Foundation — Jul 28, 2025

Information sourced from the clinic's website as of July 10, 2026. Own this clinic? Claim or correct this listing.