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Allergy, Asthma, and Immunology Specialists in Morristown, NJ

Allergy and ImmunologyMadison, NJ

★★★★☆4.0/5126 reviews across 5 platforms

Ratings by platform

  • Zocdoc (Dr. Neha Sirohi): 4.76/5
  • WebMD Care (Dr. Barry Weinreb): 4.5/5 (6 ratings)
  • Vitals (Dr. William J. Chernack): 3.8/5 (12 ratings)
  • U.S. News & World Report (Dr. John J. Oppenheimer): 4/5 (103 ratings)
  • Wellness.com (Dr. William J. Chernack): 3.5/5 (5 reviews)

What patients say

Patients praise

  • High level of clinical expertise and knowledge
  • Thoroughness and attention to detail during exams
  • Clear explanations of complex medical information
  • Highly recommended by some patients for ongoing treatment needs

Common complaints

  • Poor administrative/receptionist experiences
  • Issues with appointment scheduling and communication between office/staff
  • Perceived unnecessary or excessive testing
  • Dissatisfaction with billing policies for late cancellations
  • Poor bedside manner or perceived sarcasm from providers

In patients' words

"I am very dissatisfied with Dr, Chernack because he conducted unnecessary testes on my son with individual injections, he charged me and the insurance company 4 times and his bedside… manner was poor, not too mention he was unnecessarily sarcastic."

Vitals review of Dr. William J. Chernack

"Patients consistently praise this provider's extensive knowledge and ability to explain complex medical information clearly. They appreciate the provider's thoroughness and attention to detail..."

U.S. News & World Report summary of Dr. John J. Oppenheimer

"Good experienced doctor, but receptionist very unfriendly. My opinion - she doesn't like other people very much."

Wellness.com review of Dr. William J. Chernack

"I wouldn't recommend him to anyone based on this and regardless of my twenty plus years of experience with him I will never see him again because of this."

Vitals review of Dr. John J. Oppenheimer regarding billing/cancellation issues

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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