Magan Medical Clinic, Inc.
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Magan Medical Clinic, Dermatology
420 W Rowland St, 2nd Floor
Covina, CA 91723

(626) 331-6411 Phone - General line
(626) 251-1500 Phone - Appointments (Open Mon-Fri, 7:30 am-5:30 pm)
(626) 251-1552 Fax


Dermatology Staff
Our wonderful dermatology staff. Board certified dermatologist
 Charles Chiang, M.D., F.A.A.D. is in the center


We provide quality dermatology care with compassion. Our specialty is medical dermatology, including:

  • Acne (both teenage and adult onset; we are enrolled in iPledge if Accutane is needed)
  • Eczema / atopic dermatitis (in both children and adults)
  • Psoriasis
  • Skin cancer / skin exams
  • Moles
  • Warts / molluscum
  • Rosacea
  • Pigmentation disorders
  • Alopecia areata (autoimmune non-scarring hair loss)
  • Scarring hair loss (autoinflammatory scarring hair loss)
  • Phototherapy (we have a nbUVB booth and Dr. Chiang completed a phototherapy fellowship at UCSF)
  • Hives
  • Itching (pruritus)
  • Nail disorders

  • Note: Cosmetic treatments are not performed in Dermatology but instead by Magan's Medical Aesthetics Laser Center.

If you have psoriasis or hair questions, Dr. Chiang possesses special expertise. He completed fellowships in both fields at University of California, San Francisco where he saw a wide spectrum of patients (including the most severe), performed clinical trials, and published research.

We take pleasure in serving our community including Covina, West Covina, San Dimas, Rancho Cucamonga, Baldwin Park, Azusa, Glendora, Upland, El Monte, Duarte, Monrovia, Arcadia, La Puente, and Diamond Bar.

Same day appointments often available. No referral is necessary if you have PPO insurance. We accept a wide range of insurance plans (unfortunately, we do not accept Medi-Cal as primary insurance, only as secondary insurance).

For appointments, please call (626) 251-1500. We look forward to serving you!


"What's New in..."

A monthly column by Dr. Chiang


May 2019

What's New in Eczema (atopic dermatitis)

What's new in Eczema

The largest, to my knowledge, epidemiological survey of atopic dermatitis to examine prevalence and severity has been released. It was an Internet based survey by Dr. Silverberg of more than 273,645 infants, children, and adults in 18 countries. In it, atopic dermatitis was defined by the U.K. Working Party's Diagnostic Criteria for Atopic Dermatitis. This meant patients had "itchy skin plus three or more of the following features: (i) onset under the age of 2 y; (ii) a history of flexural involvement; (iii) a history of asthma or hay fever (or a history of atopic disease in siblings and parents if the child is under 4 y); (iv) a history of generally dry skin in the last year; and (v) visible flexural dermatitis."

The results correlated which what I've been seeing in practice. There were more adults (10% prevalence) than younger cohorts (4-9%). In addition, there were more Asians & Hispanics adults affected than other races.  The highest rate of atopic dermatitis in adults was in China at 15%. Mexico and Brazil were close at 12-14%, which correlates with the many patients I've seen from all three countries in my practice.

The highest rate in both children (2-11 years) and adolescents (12-17 years) was in South Korea at 14-16%. The highest rate in infants (<2 years) was in France & UK at 7%. In addition, the UK had the percentage of infants with severe disease at 49%.

For all age groups, the least was in Israel & Switzerland at 2-4%.

In addition, the prevalence showed it being least common in infants (but can be severe when it does occur), becomes more common in children, becomes less common in adolescence, then peaks in adulthood. This correlates with my seeing children having eczema "for the first time," it "going away" as a teenager, then "came back' as an adult.

Patients are not alone with sensitive skin. If you have eczema or another skin condition, consider making an appointment for dermatology consultation at (626) 251-1500 to discuss your options.

Charles Chiang, MD, FAAD
Board Certified Dermatologist

-Williams HC, et al. The U.K. Working Party's Diagnostic Criteria for Atopic Dermatitis. I. Derivation of a minimum set of discriminators for atopic dermatitis. Br J Dermatol 1994

-Jancin B. Worldwide atopic dermatitis survey brings big surprises. Dermatology News 2019

-Silverberg JI. EADV Congress, Abstract FC01.01

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