Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John J Oppenheimer, MD

Individual provider Allergy Physician · NPI 1639170871

John J Oppenheimer, MD is an Allergy/Immunology in Cedar Knolls, New Jersey. Graduated from Temple University School of Medicine in 1986, 40 years ago. Practices with Jeffrey Weiss, MD, PA, an 18-clinician group and accepts Medicare assignment. Licensed in New Jersey.

Years since qualifying
40
Trained at
Temple University School of Medicine
Licensed in
NJ
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8 Saddle Rd First Fl
Cedar Knolls, NJ 07927-1902
Phone: (908) 934-0555
Fax: (973) 540-0472
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy Physician (primary) Taxonomy 207KA0200X · Licence 25MA05056200 (NJ)

Record details

NPI number1639170871
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 10, 2005
Last updated in NPPESMay 16, 2016
Mailing addressPo Box 416457, Boston, MA 02241-6457

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolTEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice Jeffrey Weiss, M.D., P.A. — 18 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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