John J. Oppenheimer, MD
Listed as an allergist, with 2 practice addresses in Morristown and Branchburg, New Jersey.
Practice locations 2
Jeffrey Weiss, M.D., P.A.
261 James St, Suite 3F
Morristown, NJ 07960Jeffrey Weiss, M.D., P.A.
3461 US Hwy 22
Branchburg, NJ 08876
From the records
- Specialty
- Allergist
- Records
- Medicare records: allergy/immunology (October 2026).
- Medicare
- Accepts the Medicare-approved amount as payment in full (Medicare assignment), according to CMS’s file. This applies to Original Medicare; Medicare Advantage plans have their own networks. What assignment means
- Medical school
- Temple University School of Medicine, graduated 1986 (Medicare records)
- Registry record
- Last updated May 2016
- NPI
- 1639170871 (national provider registry)
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From CMS’s Doctors and Clinicians file (October 2026) and the national provider registry, NPPES (October 2026). Listings are free and in alphabetical order; we don’t rate or recommend doctors. How we list doctors