Chang Xu, DO
NPI 1528762333 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chang Xu, DO is a Internal Medicine Physician provider in Chicago, IL (NPI 1528762333).
Provider details
- NPI number
- 1528762333
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-03-27
- Last updated
- 2023-12-05
- Certified
- 2023-12-05
Frequently asked questions
- What is Chang Xu's NPI number?
- Chang Xu's National Provider Identifier (NPI) is 1528762333, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chang Xu's specialty?
- Chang Xu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chang Xu located?
- Chang Xu's practice location on file with NPPES is 820 S Wood St Ste 100, Chicago, IL 60612-4325.
- What is Chang Xu's phone number?
- The practice phone number listed in the NPPES registry for Chang Xu is (312) 996-2933.
- Does Chang Xu accept Medicare?
- Chang Xu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chang Xu's NPI active?
- Yes — Chang Xu's NPI (1528762333) is active in the NPPES registry as of the last update on 2023-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.