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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Karen Hong Xue Sun, M.D.

Internal Medicine Physician in Bridgewater, NJ · enumerated 2006.

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

National Provider Identifier

1558307900

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Registry record

Entity type Individual (Type 1)
Name Dr. Karen Hong Xue Sun
Credential M.D.
Sex Female
Practice address 201 Union Ave, Suite 1a, Bridgewater, NJ, 08807
Fax (908) 595-6330
Enumeration date Jun 22, 2006
Last updated in NPPES Jul 2, 2010

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MA070631 (NJ) Primary
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
8636605 Medicaid NJ -

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 is the NPI number for Karen Sun?
The National Provider Identifier (NPI) for Karen Sun is 1558307900, a Type 1 (individual) record in the CMS NPPES registry.
Where does Karen Sun practice?
The practice location on file with NPPES is in Bridgewater, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-02.