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Hao Zhang, MD

Internal Medicine • Edison, NJ

★★★★★5.0/5341 reviews across 2 platforms

Ratings by platform

  • US News Doctors: 5/5 (119 reviews)
  • Edison Wellness Medical Group website (official): 4.95/5 (222 reviews)

What patients say

Patients praise

  • Professional and knowledgeable care
  • Efficient and punctual service with little to no wait time
  • Friendly and helpful staff
  • Clean and organized office environment
  • Good explanations of medical conditions and management
  • Convenient on-site lab testing and online portal for appointments/reports

Common complaints

  • Issues with insurance billing codes and lack of response from the office to rectify errors

In patients' words

"I still received a bill from Labcorp. I called my insurance company and they told me that it was due to the wrong code that the doctor added for the lab tests... they never get back to me."

— LocalityBiz Review

"My appointment was at 8am. I was called almost immediately as soon as I finished my paperwork. My visit was one of the best experiences to a Dr.'s office."

— Ireland724.info Review

"Dr.Zhang is really nice, patent, knowledgeable. Manage time well and almost no waiting time. Definitely recommend."

— Edison Wellness Medical Group Website

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 11, 2026 — sources: [1][2][3][4][5][6][7].

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