Magan Medical Clinic, Inc.


Magan Medical Clinic, Dermatology
420 W Rowland St, 2nd Floor
Covina, CA 91723
(626) 331-6411 Phone (Appointment Desk open M-F, 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) 331-6411. We look forward to serving you!


"What’s New in..."

A monthly column by Dr. Chiang


November 2016

What's New in Melanoma

What's new in Melanoma

I am seeing increasing numbers of melanoma in my practice, with two cases in one day recently. One relatively simple agent that may improve survival is vitamin D. A recent prospective cohort study of 1,042 melanoma patients by Fang et al found that those with higher vitamin D values had significantly higher “overall survival, melanoma-specific survival, and disease-free survival.” Those with < 16 ng/ml, the approximate value used to mark Vitamin D deficiency, “were 1.62 times more likely to experience recurrence and were 1.76 times more likely to die as a result of melanoma.”

That being said, the study does not prove cause and effect. I would also emphasize I would not recommend increasing sun exposure to increase vitamin D levels. The consensus is oral supplementation is much preferred over increasing sunlight exposure. In addition, vitamin D is not risk free and can lead to excessive calcium levels (“particularly in high dosages of >5000 IU daily”)

While further data and guidelines would be ideal, those who have been diagnosed with melanoma or are at high risk for melanoma may wish to consider vitamin D blood level testing and/or supplementation.

If you have bumps on your body worrisome for skin cancer, especially melanoma, or have other skin questions, please make an appointment for dermatology consultation at (626) 331-6411 to discuss your options.

Charles Chiang, MD, FAAD
Board Certified Dermatologist


- Fang S, et al. Association of Vitamin D Levels With Outcome in Patients With Melanoma After Adjustment For C-Reactive Protein. J Clin Oncol 2016
- Sondak, et al. Vitamin D and Melanoma: What Do We Tell Our Patients? J Clin Oncol 2016
- Newton-Bishop JA, et al. 25-Hydroxyvitamin D2/D3 levels and factors associated with systemic inflammation and melanoma survival in the Leeds melanoma cohort. Int J Cancer 2015
- Khan QJ, et al. How I treat vitamin d deficiency. J Oncol Pract 2010

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