West Dermatology

Khatera Ali, AES

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Khatera Ali, AES

Ali

Specialties
Cosmetic Dermatology

Languages I Speak
English

About Me

Khatera Ali is a licensed medical aesthetician and product specialist at West Dermatology Los Alamitos, where she is dedicated to helping patients achieve healthy, radiant skin through personalized care and advanced aesthetic treatments.

Working closely with dermatologists and clinical providers, Khatera develops customized skincare programs tailored to each patient’s unique concerns, skin type, and long-term goals. Her approach combines clinical insight with results-driven treatments to deliver both immediate improvements and lasting skin health.

Khatera is experienced in a wide range of cosmetic and aesthetic services designed to address common skin concerns such as acne, aging, redness, and sun damage. She focuses on creating a comfortable, educational experience while helping patients feel confident in their skin.

Areas of Expertise

  • Acne and congestion management
  • Anti-aging and skin rejuvenation
  • Rosacea and redness treatment
  • Sun damage and uneven skin tone
  • Scalp health and hydration treatments
  • Customized facial treatments

Services Offered

  • Acne facials
  • Anti-aging facials
  • Chemical peels
  • HydraFacial
  • Scalp HydraFacial (Keravive)
  • Dermaplaning
  • Extractions
  • Milia treatment
  • Broken capillary treatment
  • CoolSculpting
  • VI Peel

Where I Practice

West Dermatology Los Alamitos

4281 Katella Ave
Suite 220
Los Alamitos CA 90720

(562) 252-0173

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Andi Hsi, MD

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Andi Hsi, MD

Hsi

Specialties
Surgical Dermatology

Languages I Speak
English

About Me

Dr. Andy Hsi is a board-certified dermatopathologist and surgical pathologist practicing since 2017.

Starting in 2021, Dr. Hsi supported Platinum Dermatology Partner’s California, Nevada, Texas and Arizona clinics, bringing exceptional diagnostic precision to our network of practices.

Dr. Hsi completed his medical education at Baylor College of Medicine as a full-scholarship recipient, followed by residency and fellowship training at Washington University in St. Louis.

Dr. Hsi has specialized expertise in cutaneous lymphomas, melanocytic lesions, inflammatory dermatoses, and neoplasms such as vascular, neural and adnexal tumors.

A published researcher in renowned journals including the Journal of the American Academy of Dermatology, Dr. Hsi also contributed to the textbook “Hematopathology of the Skin: A Clinical and Pathology Approach.”

Dr. Hsi is fluent in Mandarin Chinese. He enjoys spending time with his family, cooking, traveling, volunteering at his children’s school, and playing piano.

Where I Practice

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Medical Dermatology
Surgical Dermatology
Cosmetic Dermatology
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Payam Abrishami, MD, FAAD

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Payam Abrishami, MD, FAAD

Payam

Specialties
Surgical Dermatology

Languages I Speak
English

About Me

Payam Abrishami, MD, FAAD is one of the most trusted and experienced dermatopathologists in the United States. He currently interprets cases for over 40 dermatologists and dermatopathologists nationwide, serving as a critical resource in the accurate diagnosis of skin conditions. Over the course of his career, he has interpreted more than 500,000 skin biopsies and has expertly diagnosed over 50,000 melanomas, reflecting an exceptional depth of experience in both common and complex cases.

As a board-certified dermatologist and dermatopathologist, Dr. Abrishami plays a vital role in guiding patient care through precise, timely pathology interpretation. His work directly supports dermatologists in developing effective, individualized treatment plans, particularly in cases involving skin cancer and other serious dermatologic conditions.

Dr. Abrishami is known for his commitment to clarity and accuracy in every diagnosis. He strives to provide detailed, clinically relevant findings in clear, concise language, ensuring that both providers and patients have a strong understanding of each case. His approach emphasizes diagnostic confidence, efficiency, and collaboration across care teams.

Through his extensive experience and dedication to excellence, Dr. Abrishami continues to contribute to improved patient outcomes and advances in dermatologic care.

Where I Practice

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Robert Thiel, MD

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Robert Thiel, MD


Specialties
Medical Dermatology
Rheumatic Dermatology
Surgical Dermatology

Languages I Speak
English

About Me

Dr. Robert “Robbie” Thiel is a board-certified dermatologist dedicated to providing care that goes beyond the skin. He takes time to listen to each patient’s story and combines advanced research and technology with a compassionate, personalized approach. His goal is to partner with patients in finding the right path forward for both their health and confidence.

Born and raised in a small town outside Stockton, California, Dr. Thiel grew up in a large, close-knit family. After high school, he served a two-year mission for the Church of Jesus Christ of Latter-day Saints in the Dominican Republic. This transformative experience inspired his commitment to service and influenced his decision to pursue medicine.

Dr. Thiel completed his undergraduate studies at Cal Poly San Luis Obispo before earning his medical degree at St. Louis University, where he discovered his passion for dermatology and the critical role skin plays in overall health. He went on to complete his dermatology residency at Virginia Tech, developing specialized expertise in rheumatologic dermatology, including conditions such as dermatomyositis, lupus, scleroderma, morphea, and vasculitis. His clinical interests also include managing chemo- and immunotherapy-related rashes and treating autoimmune bullous disorders.

Fluent in Spanish, Dr. Thiel values building strong connections with a diverse patient community. Outside of medicine, he enjoys traveling with his family to remote destinations, where they can hike, explore, and unplug from technology. A lifelong sports enthusiast, he is also an avid golfer with a particular love for baseball, basketball, and football.

Education

Residency: Dermatology
Carilion Clinic- Virginia Tech SOM
Roanoke, VA

Internal Medicine Internship
Santa Barbara Cottage Hospital
Santa Barbara, CA

Doctor of Medicine
Saint Louis University School of Medicine
St. Louis, MO

Bachelor of Science, Biology
California Polytechnic State University
San Luis Obispo, CA

Post Grad

LICENSURE & CERTIFICATIONS

  • California Medical Board License
  • Board-Certified Dermatologist

PROFESSIONAL ORGANIZATIONS

  • American Academy of Dermatology
  • Alpha Omega Alpha Honor Medical Society

Where I Practice

West Dermatology La Jolla/UTC

9339 Genesee Ave
Suite 350A
San Diego CA 92121

(858) 454-4300

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Heather Nguyen, NP-C

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Heather Nguyen, NP-C

heather

Specialties
Cosmetic Dermatology
Medical Dermatology
Surgical Dermatology

Languages I Speak
English

About Me

Heather Nguyen, NP-C, a dedicated and compassionate Nurse Practitioner, specializes in dermatology with a focus on improving skin health, confidence, and quality of life. Originally from Orange County, Heather earned her undergraduate degree from the University of California, San Diego, and her graduate degree in nursing from Loma Linda University. She is formally trained in primary care and gerontology nursing, with extensive experience in pain management, labor and delivery, and telemetry.

 

Driven by a passion for dermatology, Heather is committed to providing holistic, evidence-based care tailored to each patient’s unique needs. She has a keen interest in medical dermatology, particularly in treating conditions such as eczema, psoriasis, acne, and skin cancers. Heather prides herself on her ability to listen attentively to her patients’ concerns, ensuring rewarding and lasting relationships.

 

Outside of her professional life, Heather cherishes time spent outdoors with her husband and sons.

 

To schedule an appointment with Heather Nguyen, NP-C, click here.

“My core philosophy in patient care is to treat every patient as if they are my family or friend.”

Education

  • Master of Science, Adult-Gerontology Nurse Practitioner

Loma Linda University

Loma Linda, CA

  • Bachelor of Science, Nursing

Villanova University

Villanova, PA

  • Bachelor of Science, Biology

University of California

San Diego, CA

Post Grad

  • Board Certified, American Academy of Nurse Practitioners (AANP)
  • Registered Nurse, California Board of Registered Nursing
  • American Association of Nurse Practitioners

Where I Practice

West Dermatology Riverside

4244 Riverwalk Way
Suite 170
Riverside CA 92505

951-736-7432

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Sarah Standel, MHS, PA-C

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Sarah Standel, MHS, PA-C

Sarah

Specialties
Cosmetic Dermatology
Medical Dermatology
Surgical Dermatology

Languages I Speak
English

About Me

Sarah Standel, MHS, PA-C graduated from University of Colorado with a bachelor’s degree in Integrative Physiology. She then attended Quinnipiac University in Connecticut, where she received a Master of Health Science from the Physician Assistant program. Sarah graduated summa cum laude and was inducted into the Pi Alpha Physician Assistant National Honor Society, an honor given to only the top 5% of PA graduates.
Sarah has focused her passion and training in the fields of medical and cosmetic dermatology. She has received extensive training in diagnosing and treating a wide variety of skin conditions, including skin cancer, actinic keratoses, acne, rosacea, warts, psoriasis and more. She has also been trained in microneedling, chemical peels, lasers, IPL, Botox and fillers such as Juvederm, Restylane and Radiesse.

To schedule an appointment with Sarah Standel, MHS, PA-C, click here.

Education

  • University of Colorado, BA Integrative Physiology.
  • Quinnipiac University in Connecticut, where she received a Master of Health Science from the Physician Assistant program.

Where I Practice

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West Dermatology

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Services

Medical Dermatology
Surgical Dermatology
Cosmetic Dermatology
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