CRISTIAN ZHANG XU M.D. – NPI #1376287987
Internal Medicine
An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.
CRISTIAN ZHANG XU is a physician located in MIDDLETOWN, DE. NPPES has assigned the NPI number 1376287987 to CRISTIAN ZHANG XU on April 21, 2022. It is a Type-1 NPI, indicating this NPI number is associated with an individual. The primary taxonomy selected by this provider is 207RS0012X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Sleep Medicine
The NPI profile was last updated on May 13, 2026. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for CRISTIAN ZHANG XU below.
NPI Profile for
CRISTIAN ZHANG XU
(more than 4 years ago)
MIDDLETOWN, DE 19709-1449 Phone: (302) 464-3967 Fax: (302) 464-3968
DOVER, DE 19901-3530 Phone: (302) 464-3967 Fax: (302) 464-3968
Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.
A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.
| Taxonomy Classification / Specialization | State | License |
|---|---|---|
| 207RS0012X - Internal Medicine / Sleep Medicine (Primary) |
DE | C1-0029358 |
The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.