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Neurology Services | UCI Health | Orange County, CA

NeurologySanta Ana, CA

★★★★☆4.0/51,050 reviews across 4 platforms

Ratings by platform

  • Healthgrades (Dr. Michael Sy): 4.7 out of 5 stars (based on 291 ratings) (291 ratings)
  • UCI Health (Dr. Nan Cheng): 4.7 out of 5 stars (based on 59 ratings) (59 ratings)
  • UCI Health (Dr. Jeffrey A. Mullen): 4.7 out of 5 stars (based on 286 ratings) (286 ratings)
  • Momentary Labs (CMS HCAHPS data): 3 out of 5 stars (overall hospital rating) (414 surveys)

What patients say

Patients praise

  • High patient satisfaction with individual neurologists' expertise and bedside manner
  • Doctors are often described as thorough, empathetic, and attentive listeners
  • Positive recognition for specialized care, such as movement disorders and headache management
  • Staff generally perceived as friendly and responsive by many patients

Common complaints

  • Challenges with appointment scheduling and long wait times
  • Reports of dismissive or unprofessional behavior from some staff members
  • Dissatisfaction with communication processes, particularly reaching doctors directly
  • Specific complaints regarding administrative hurdles, such as mask policy enforcement or appointment cancellations

In patients' words

"I have had numerous neurologists and Dr. Phielipp is without a doubt the most thorough. He spent over an hour with me, asking pertinent questions plus he listened to me."

WebMD review for Dr. Nicolas Phielipp

"Last week I Went to this office with an appointment on my lawyers referral and was treated horribly upon arrival by employee. ... I will be Filing a formal complaint with the state for their discrimination."

WebMD review for Dr. Jay Shah

"It wasn't until Dr. Thai came in did we feel listened to and cared for."

Healthgrades review for Dr. Gaby Thai

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 10, 2026 — sources: [1][2][3][4][5][6][7][8].

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