Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Joseph Y Cheung, MD
Nephrology Physician in Boston, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1710936083
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Registry record
Entity type Individual (Type 1)
Name Dr. Joseph Y Cheung
Credential MD
Sex Male
Practice address 45 Francis St, Boston, MA, 02115
Phone (617) 732-6383
Enumeration date May 6, 2006
Last updated in NPPES Sep 2, 2020
Taxonomy & licenses
207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License MD036031E (PA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD036031E (PA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 10503840007 | Medicaid | PA | - |
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.
Frequently asked questions
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.
What specialty is Joseph Cheung?
Joseph Cheung is registered in NPPES with the primary taxonomy of Nephrology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-02.