Omar On, Physician Assistant

Omar On

Physician Assistant

774 East Avenue
Chico, CA 95926

Overall rating

Top reviews

I walked into OJ's office without an appointment, hoping they could squeeze me in. I was having pain on the left side of my face and a terrible skin condition that was making me ashamed TO BE SEEN IN PUBLIC. To my surprise and deShow morelight, they'd just had a "no show," and were able to get me right in! I did not have what I thought I had (we love to research our own medical conditions on the internet, don't we?), but OJ quickly diagnosed my skin issue and prescribed medicine to treat it. I'm so grateful to OJ and his wonderful staff, and to the "skin angel" who was sitting on my shoulder that day.

Marianne E H. • August 05, 2026

O. Jay has been my dermatologist for at least 30 years and will always take care of of my dermatology needs. He has a special demeanor and is always thorough with my exams. I appreciate his staff who are always very helpful. ThankShow more you O. Jay for taking care of me and explaining all procedures. You are a special person.

James M. • June 15, 2026

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About Omar On

For over 25 years, O. Jay On, PA, has treated patients for a variety of skin conditions and cosmetic preferences. He currently practices at Chico Dermatology in Chico, California, specializing in general dermatology, dermatologic surgery, and cosmetic dermatology. Patients frequently come to him for sclerotherapy to treat their spider veins, Botox® wrinkle reduction, and facial contouring with name-brand dermal fillers like Juvederm™ and Restylane®.

O. Jay’s passion for health care is apparent in all that he does. Since graduating from Stanford University’s selective physician assistant program, O. Jay has served as a lecturer for Stanford’s physician assistant/nurse practitioner program on dermatological conditions. He even earned the Mary Em Wallace Teacher of the Year award from the school. He uses his renowned public speaking skills for guest lectures across the country, often speaking on behalf of pharmaceutical companies and medical providers. 

In addition to live lectures, O. Jay is known for his webcast and classroom presentation for ninth and tenth grade students, “Live in Your Skin for a Lifetime,” about acne and proper skin care habits. He created the presentation on an unrestricted educational grant. 

Today, O. Jay holds memberships with the Sacramento Valley Dermatologic Society, the Society of Dermatology Physician Assistants, the American Academy of Physician Assistants, and the California Academy of Physician Assistants. Through these associations, he keeps up on the latest techniques and technologies in his field of practice. 

At Chico Dermatology, O. Jay’s main priority is to give his patients healthy skin that they’re proud to show off. He teaches them to care for their skin outside of treatment and to find a new appreciation for their natural features.


Services, Conditions and Procedures

Skin Cancer

Psoriasis

Eczema

Evolve X

Acne Scars

Facial Rejuvenation

Laser Hair Removal

Spider Veins


Location

Chico Dermatology

774 East Avenue
Chico, CA, 95926


More About Omar On

Practice

Chico Dermatology

Specialties

NPI Number

1295889871


Reviews

4.91
1240 Reviews

I’ve been to many Dermatologist over the years. Some not so good but Dr O J On is remarkable. He always greets with a smile, listens and explains everything. Show’s pictures of similar ailments. So glad I found him.

Sheri M. • August 05, 2026

I walked into OJ's office without an appointment, hoping they could squeeze me in. I was having pain on the left side of my face and a terrible skin condition that was making me ashamed TO BE SEEN IN PUBLIC. To my surprise and delight, they'd just had a "no show," and were able to get me right in! I did not have what I thought I had (we love to research our own medical conditions on the internet, don't we?), but OJ quickly diagnosed my skin issue and prescribed medicine to treat it. I'm so grateful to OJ and his wonderful staff, and to the "skin angel" who was sitting on my shoulder that day.

Marianne E H. • August 05, 2026

Wonderful as usual!

Richard S. • August 05, 2026

Very friendly and quick. I would recommend to others

Jeffrey H. • August 05, 2026

Mr. On is always a delight along with his staff. Great people. For O Jay thanks for Inflicting the pain, always a delight.

Randy O. • August 04, 2026

Always a pleasure when visiting Chico Dermatology. Everyone is so friendly and very helpful.

Steven H. • August 04, 2026

Very professional and friendly

Patricia R. • August 01, 2026

Excellent care. O J took care of several problems on my skin. Great sense of humor . Highly recommended.

Daniel Dan M. • July 31, 2026

They’ve been taking great care of my Mom for years and during my first visit it was easy to see why she loves them. They are friendly, great customer care by staff and Dr.’s clinical care - all next level amazing.

Kathryn L. • July 29, 2026

Every one was very pleasant and very helpful.

William A. • July 28, 2026

My appt was cancelled and I haven't heard back from you to reschedule.

Birute V. • July 25, 2026

OJ did a great job. I really appreciate him. Let him know that.

Christopher B. • July 24, 2026

The calm funny approach of O.Jay, PA has made my anxiety with sun issues growing up with red hair and the pale skin that accompanies it just disappear. He’s a lovely person that puts you right at ease. I highly recommend him.

Lorraine C A. • July 24, 2026

Always friendly and professional.

Roy B. • July 23, 2026

Dr. O. Jay and staff are truly fantastic. Professional and personal with their care.

Clifford P. • July 23, 2026

I did not see ok today due to their computer services being down. That will call me to reschedule.

Susan R. • July 22, 2026

Staff are very helpful and considerate

Tami T. • July 20, 2026

Always know I will be greater with real care and well taken care of of. Ido sent others there with great confidence.

Charlotte S. • July 17, 2026

Always happy, informative and personable. A real pleasure to be there.

Joan H. • July 15, 2026

I was going to be charged twice as much money for this visit as what I was charged for a prior visit and was not informed ahead of time (no secrets policy prices were not disclosed) until I asked the staff to please double check with the doctor after the appointment. Initially they just said that prices had increased to double in a matter of months but had billed an office visit versus a 911 appointment by accident. The injection also didn’t at all resolve my cyst and may have made it worse. This happened the previous time I had a 911 as well which had been discouraging. So I have paid close to $120 to have a cyst remain unchanged and take longer to heal potentially. Both appointments I was also going to be charged for a full office visit until I asked if the staff could double check. Just a bummer of an experience this time and last appointment sadly and I hate to write discouraging feedback but that was my experience unfortunately.

Kaelyn B. • July 14, 2026

Ttt

Phillip H T. • July 10, 2026

Great. Thank you for taking me on short notice

Frank S. • July 10, 2026

Dr On is amazing. So comforting and funny. He’s great and is staff too

Jodi Y. • July 08, 2026

Office staff is uniformly friendly and welcoming. I am impressed by how they keep to schedule so as a patient you are not left waiting. O. Jay is impressive his knowledge, experience and competence and yet he maintains a friendly, accessible demeanor. Everything you could want from a medical office.

Leonard G. • July 08, 2026

Was in and out. With a few laughs

Victoria M. • July 07, 2026

The staff and Doctor are so kind and thoughtful. Makes you want to send friends an Family to there office. The doctor makes you feel comfortable, I diffenetly recommend them. Thanks Millie

Mildred L. • July 07, 2026

I value the professionalism of the staff at Chico Dermitology. Dr. On is very considerate and attentive to the concerns of his patients(including myself). If and when, I will most certainly be a returning patient, and I would highly recommend your clinic, to my friends and associates. Sincerely, Rafiki Webster

Odysseus W. • July 04, 2026

If i could rate it 10 stars they would get 11!!! This place was cooler than the other side of my pillow!

Brynlee C. • July 03, 2026

OJay and his staff are great! Highly recommend

Mary G. • July 03, 2026

You guys are the brst!

Shirley B. • July 01, 2026

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