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About

Impact Medical (formerly Weiss Medical) provides allergy, asthma, and immunology care for both pediatric and adult patients in New Jersey and New York, including Morristown, Madison area. Key points: - Specialties: Allergy, Asthma, Immunology, with pediatric and adult patients. - Approach: Compassionate, patient-centered care with state-of-the-art facilities and individualized care plans. - Locations/coverage: Serves New Jersey and New York regions; multiple contact numbers listed for scheduling. - Company: Private, in Hospitals and Health Care; formerly Weiss Medical; rebranded as Impact Medical. If you’re seeking allergy, asthma, or immune-related care in Morristown/Madison, Impact Medical offers tailored evaluations and treatment options. To book, use the clinic’s contact numbers or visit the homepage.

Clinic Type

Allergy and Immunology

Address

261 James Street, Suite 3F, Morristown, NJ 07960

Phone

(973) 267-0829

Email

info@impactmedicalaai.com

Opening Hours

Monday 8:00am–6:00pm; Tuesday 8:00am–6:00pm; Wednesday 9:00am–6:00pm; Thursday 10:00am–6:00pm; Friday 8:00am–4:00pm; Saturday Closed; Sunday Closed

Services Offered

  • Allergy testing
  • Asthma management
  • Immunology consultation
  • Allergic rhinitis management
  • Food allergies
  • Drug allergies
  • Insect sting allergies
  • Eczema/dermatology-related allergies
  • Pediatric and adult allergy/immunology care

Team

  • Dr. Jeffrey Weiss, MD, ABMA board certified in Allergy & Immunology; founder of Weiss Medical; trained at Columbia Presbyterian Medical Center, Long Island Jewish Medical Center; fellowship in Adult & Pediatric Allergy, Asthma & Immunology; AOA; practicing since 2002 — Allergist/Immunologist
  • Dr. Aung, Board certified Allergist; MD from University of Medicine-1, Yangon; residency in Pediatrics at Richmond University Medical Center; Allergy & Clinical Immunology fellowship at Tulane University — Allergist/Immunologist
  • Dr. Neha Sirohi, Board-certified in Allergy/Immunology and Pediatrics; residency in Pediatrics; fellowship in Allergy & Immunology; member of AAAAI and ACAAI — Allergist/Immunologist

Insurance & Payment

Languages Spoken

  • English

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • 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)

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

"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

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

Information sourced from the clinic's website as of July 11, 2026.

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