Cristian Zhang Xu, M.D.
NPI 1376287987 · Sleep Medicine (Internal Medicine) Physician · Middletown, DE
Cristian Zhang Xu, M.D. is a Sleep Medicine (Internal Medicine) Physician provider in Middletown, DE (NPI 1376287987).
Provider details
- NPI number
- 1376287987
- Entity type
- Individual
- Primary specialty
- Sleep Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C1-0029358 (DE)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 26 | 13 |
| Metformin Hcl | 26 | 14 |
| Empagliflozinbrand: Jardiance | 23 | — |
| Alcohol Antiseptic Padsbrand: Alcohol Prep Pads | 12 | — |
| Metoprolol Succinate | 12 | — |
| Omeprazole | 12 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-04-21
- Last updated
- 2026-05-13
- Certified
- 2026-05-13
Frequently asked questions
- What is Cristian Zhang Xu's NPI number?
- Cristian Zhang Xu's National Provider Identifier (NPI) is 1376287987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cristian Zhang Xu's specialty?
- Cristian Zhang Xu is listed in the NPPES registry with a primary specialty of Sleep Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Cristian Zhang Xu located?
- Cristian Zhang Xu's practice location on file with NPPES is 209 E Main St Ste 3, Middletown, DE 19709-1449.
- What is Cristian Zhang Xu's phone number?
- The practice phone number listed in the NPPES registry for Cristian Zhang Xu is (302) 464-3967.
- Is Cristian Zhang Xu's NPI active?
- Yes — Cristian Zhang Xu's NPI (1376287987) is active in the NPPES registry as of the last update on 2026-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.