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- NPI Number
- 1639170871
- Provider Type
- Individual Practitioner
- Credential
- MD
- Primary Specialty
- Allergy & Immunology - Allergy
- License Number
- 25MA05056200
- Practice Address
- 8 Saddle RD, First Floor
- City, State ZIP
- Cedar Knolls, NJ 07927
- Phone
- (908) 934-0555
- Last Updated
- June 8, 2026
- Source
- Publicly available data
John Oppenheimer, MD is a allergy & immunology - allergy provider located in Cedar Knolls, NJ. They offer allergy & immunology - allergy services to patients in the Cedar Knolls area.
As a allergy & immunology - allergy provider in Cedar Knolls, this clinician evaluates and treats patients for a range of common conditions seen in Cedar Knolls and throughout NJ.
The practice is located at 8 Saddle RD, First Floor, Cedar Knolls, NJ 07927. Patients can call 9089340555 to schedule an appointment or use the directions link above to find the office from anywhere in the area.
Patients typically visit this provider for common reasons to schedule a visit include annual checkups, new or worsening symptoms, medication refills, lab work, preventive screenings, chronic condition management, and second opinions.
If you plan to see this provider, it is a good idea to confirm that the practice accepts your insurance and is in-network before scheduling. Coverage details vary by plan, and our quote tool can help you compare options in NJ.
This profile was last verified on June 8, 2026. Provider information is sourced from publicly available data and may not reflect recent changes. Please confirm details directly with the practice before scheduling.
Call for hours and appointments. Hours may vary by provider and location.
A patient’s guide to allergy & immunology - allergy care in Cedar Knolls, NJ.
What a Allergy & Immunology - Allergy provider does
Healthcare providers diagnose, treat, and help prevent illness and injury. They work with patients to manage ongoing conditions, interpret test results, prescribe medications when appropriate, and coordinate care with other specialists. Most providers accept both insured and self-pay patients, and many offer telehealth visits for routine concerns.
Common conditions treated
Common conditions evaluated include high blood pressure, diabetes, respiratory infections, allergies, skin conditions, digestive complaints, headaches, and musculoskeletal pain. Providers also handle preventive screenings and routine lab work.
Common reasons to schedule a visit
Common reasons to schedule a visit include annual checkups, new or worsening symptoms, medication refills, lab work, preventive screenings, chronic condition management, and second opinions.
What to expect during a visit
During a typical visit, the provider will review your medical history, ask about current concerns, perform a relevant examination, and recommend next steps such as lifestyle changes, prescriptions, additional testing, or specialist referrals. Bring a list of current medications, recent test results, and questions you would like answered.
Insurance coverage considerations
Most major insurance plans cover preventive care and medically necessary visits, but copays, deductibles, and network restrictions vary. Contact your insurance carrier or use our quote tool to confirm a provider is in-network before scheduling.
How to choose the right allergy & immunology - allergy provider in Cedar Knolls
When choosing a healthcare provider, look for board certification, convenient location and hours, accepted insurance plans, and a communication style that fits your preferences. Patient reviews and hospital affiliations can also help you make a confident decision.
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Insurance acceptance not listed
The public NPI registry does not include insurance acceptance data. Contact the office directly to ask if they accept your insurance plan. You can also use our quote tool to find health plans in NJ.
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Common questions about John Oppenheimer, MD in Cedar Knolls, NJ.
How do I make an appointment with John Oppenheimer, MD?
Call John Oppenheimer, MD directly at their Cedar Knolls office to schedule a visit. You can also use the contact form on this page to send a message and the practice will respond.
Does John Oppenheimer, MD accept insurance?
Provider insurance information is not included in the public NPI registry data that powers this directory. Contact the office directly to ask whether they accept your specific insurance plan. You can also use our quote tool to find health plans in NJ.
What are the office hours for John Oppenheimer, MD in Cedar Knolls?
Office hours for John Oppenheimer, MD in Cedar Knolls are not currently published. Call the practice directly to confirm hours before your visit.
Is parking available at John Oppenheimer, MD's Cedar Knolls location?
Most provider offices in Cedar Knolls offer on-site or nearby street parking. Call John Oppenheimer, MD in Cedar Knolls ahead of time to confirm parking options and accessibility accommodations.
Does John Oppenheimer, MD accept walk-in appointments?
Walk-in availability for allergy & immunology - allergy providers varies by location and day. Call ahead to confirm same-day availability before visiting.
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Claim ProfileData is sourced from publicly available records. Public records do not confirm active license status, quality of care, insurance acceptance, or network participation. Please verify details directly with the provider before scheduling. Last updated June 8, 2026.