At Essen Medical Associates we provide a complete range of dermatological services for men and women at all stages of life. Our specialists diagnose and treat the complete spectrum of skin conditions, including eczema, psoriasis, and rosacea. We emphasize skin cancer prevention and early diagnosis and treatment.

Our dermatologists are available to perform annual skin and mole examinations. These examinations can be very helpful in the early detection of skin cancer.

Our areas of expertise include:

  • Diabetes (Types 1, 2 and gestational)
  • Blood sugar monitoring
  • Medication Management
  • Diabetes self-management education
  • Nutritional and dietary guidance
  • Preventing Complications
  • Diabetes Prevention Program
  • Diabetic foot specialist

Our expert team of specialists includes:

Alfonso A. Ortiz, M.D.
Internal Medicine & Endocrinology
(Bilingual Spanish/English)

Rudabah Hasan, M.D.
Board-Certified Endocrinologist


  • 2015 Grand Concourse
    Dr. Rudabah Hasan
    Office Hours:
    Monday 9:00 am - 1:00 pm

    Dr. Alfonso Ortiz
    Office Hours:
    Monday 9:00 am - 5:00 pm
    Thursday 8:00 am - 5:00 pm
  • 2445 Arthur Avenue
    Dr. Alfonso Ortiz
    Office Hours:
    Wednesday 9:00 am - 4:00 pm
    Friday 9:00 am - 5:00 pm
    Alternate Saturdays 9:00 am - 12:00 pm
  • 1181 Grand Concourse
    Dr. Alfonso Ortiz
    Office Hours:
    Tuesday 9:00 am - 5:00 pm