Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Aaron Xu Sun, MD, PHD

Hospitalist Physician in Durham, NC · enumerated 2022.

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

National Provider Identifier

1578212254

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Registry record

Entity type Individual (Type 1)

Name Dr. Aaron Xu Sun

Credential MD, PHD

Sex Male

Practice address 508 Fulton St, Durham, NC, 27705

Phone (919) 286-0411

Enumeration date Mar 21, 2022

Last updated in NPPES Jul 17, 2025

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 2025-01528 (NC) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 2025-01528 (NC) Secondary

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 Aaron Sun?

Aaron Sun is registered in NPPES with the primary taxonomy of Hospitalist 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.

Other providers at this practice address

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Stuart Manning Internal Medicine Physician · Durham, NC NPI 1043217086 Sol Gazzingan Internal Medicine Physician · Durham, NC NPI 1851389654 Bobbie Brooker Physical Therapist · Durham, NC NPI 1174508402 Kevin White Physician Assistant · Durham, NC NPI 1346226941 David Van Echo Hematology & Oncology Physician · Durham, NC NPI 1356327662 Carrie Thomas Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Durham, NC NPI 1144206228 Claudia Nassaralla Internal Medicine Physician · Durham, NC NPI 1114903275 Karen Baker Urology Physician · Durham, NC NPI 1033183314

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-17.