Michael Sim, NP-C

Practice: Unio Specialty Care

Specialty: Gastroenterology: Nurse Practitioner

Office locations: Pasadena, CA

Most recent review: 3 days ago New
4.9 out of 5
404 Ratings
178 Comments

Michael Sim, NP-C, is a board-certified Nurse Practitioner whose clinical focus is Gastroenterology, with a special interest in the microbiome. He earned a bachelor’s degree in psychology from West Chester University in Pennsylvania, then completed Azusa Pacific’s Nursing Program, earning a second bachelor’s degree and a master’s degree as a Nurse Practitioner, and graduating at the top of his class.

4.9 out of 5
404 Ratings
178 Comments

Michael Sim, NP-C, is a board-certified Nurse Practitioner whose clinical focus is Gastroenterology, with a special interest in the microbiome. He earned a bachelor’s degree in psychology from West Chester University in Pennsylvania, then completed Azusa Pacific’s Nursing Program, earning a second bachelor’s degree and a master’s degree as a Nurse Practitioner, and graduating at the top of his class.

The reviews listed below were collected independently of Unio Specialty Care through rater8. Each review represents an authentic and verified patient experience.

Easy to talk to, knowledgeable.

Rated 5 out of 5 stars
(3 days ago) Nov-2026

He was great. Asked great questions and made me feel comfortable.

Rated 5 out of 5 stars
(1 week ago) Oct-2026

Micheal is Amazing! He listen to you and he cares about your health and making you feel better asap.

Rated 5 out of 5 stars
(1 week ago) Oct-2026

Very knowledgeable person, he has a heart of a teacher. Very pleased with his patience and understanding my concern. Overall I had a great experience with Michael Sim.

Rated 5 out of 5 stars
(2 weeks ago) Oct-2026

Attentive, very knowledgeable and articulate. Highly recommend.

Rated 5 out of 5 stars
(2 weeks ago) Oct-2026

Focus on my medical changes, check for medication changes , next steps. Assurance based on facts.

Rated 5 out of 5 stars
(3 weeks ago) Oct-2026

Excellent felt very comfortable.

Rated 5 out of 5 stars
(3 weeks ago) Oct-2026

Dart man!

Rated 5 out of 5 stars
(1 month ago) Oct-2026

Very friendly and explained everything clearly.

Rated 5 out of 5 stars
(1 month ago) Oct-2026

He is knowledgeable and listened to my concerns

Rated 5 out of 5 stars
(1 month ago) Sep-2026