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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joanne Zhung, M.D.

Radiation Oncology Physician in Nyack, NY · enumerated 2010 · practices at Advanced Radiation Oncology Services of Rockland, PC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1619296092

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Registry record

Entity type Individual (Type 1)
Name Dr. Joanne Zhung
Credential M.D.
Sex Female
Practice address 111 N Highland Ave, Nyack, NY, 10960
Phone (845) 727-0828
Enumeration date May 24, 2010
Last updated in NPPES Oct 6, 2021

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 312766 (NY) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Joanne Zhung?
Joanne Zhung is registered in NPPES with the primary taxonomy of Radiation Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-06.