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St. Jude Heritage Medical Group

Allergy/Asthma • Brea, CA

About

Brea - Allergy & Asthma is part of St. Jude Heritage Medical Group in Brea, California, offering allergy, asthma, and immunology care for patients of all ages. Board-certified, fellowship-trained specialists provide prevention, diagnosis, and treatment of asthma, allergies, and immunodeficient conditions using an individualized approach. The clinic features X-ray and blood draw services, free parking, and Spanish-speaking staff.

Clinic Type

Allergy/Asthma

Address

Brea, CA

Phone

(714) 579-6826

Email

ProvidenceOCHDContactCenter@providence.org

Opening Hours

Mon - Fri: 8 a.m. - 5 p.m.

Services Offered

  • Allergy and Immunology
  • Asthma care
  • Immunology
  • Pediatrics
  • Geriatrics

Team

  • Alfred Oh Moon, MD, MD — Allergy and Immunology
  • Kate Elizabeth Nemecek, PAC, P.A.C. — Allergy and Immunology

Insurance & Payment

—

Languages Spoken

  • Spanish
  • English
  • Spanish (some staff)

FAQs

What are the hours for the Brea Allergy & Asthma clinic?

Mon - Fri: 8 a.m. - 5 p.m.

Awards & Accreditations

  • 4.9 out of 5

Photos

What Patients Say

Overall sentiment across review platforms: positive

  • Providence (Official Location Page): 4.9/5 (196)
  • Dr. Alfred Moon (Provider Profile): 4.9/5 (94)

Patients praise

  • High patient satisfaction ratings (4.9/5)
  • Kind and knowledgeable providers
  • Clean, efficient, and high-tech office environment

Common complaints

  • Reports of promise to follow up that was not fulfilled

"Excellent! Dr. Simpson is a very kind and very knowledgeable abo..."

— Healthgrades (Dr. Karen Simpson)

"Good during consult. Promised to get back to me when contacting/..."

— Healthgrades (Dr. Paolo Jorge)

"The office was really clean and very efficient. Everything seemed new and very high tech. I even liked the art in the waiting area."

— Yelp (St. Jude Heritage Medical Group Brea)

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

Information sourced from the clinic's website as of July 10, 2026.

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