Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Defeng Chen, MD

Individual provider Internal Medicine Physician · NPI 1689602112

Defeng Chen, MD practises Internal Medicine in Corpus Christi, Texas. Qualified in 1983, 43 years ago. Practices with Gulf Coast Physician Services, PLLC, a 100-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York and Texas.

Years since qualifying
43
Licensed in
NY, TX
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

600 Elizabeth St
Corpus Christi, TX 78404-2235
Phone: (361) 881-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 345 S Water St, Corpus Christi, TX 78401-2819 — (361) 500-0600

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence L7613 (TX)
Internal Medicine Physician Taxonomy 207R00000X · Licence 229821 (NY)
Hospitalist Physician Taxonomy 208M00000X · Licence L7613 (TX)

Record details

NPI number1689602112
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 30, 2006
Last updated in NPPESAugust 14, 2022
Certification dateAugust 14, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesEMERGENCY MEDICINE, HOSPITALIST
Medical schoolOTHER
Graduated 1983 (43 years in practice)
Group practice Gulf Coast Physician Services, Pllc — 100 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients696
Services billed 4,303 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Christus Spohn Hospital Corpus Christi Hospital · Corpus Christi, TX
  • Corpus Christi Medical Center,The Hospital · Corpus Christi, TX

Also affiliated with 1 inpatient rehabilitation facility and 1 long-term care hospital, which CMS identifies by certification number only.

Colleagues at Gulf Coast Physician Services, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 100 clinicians in the practice; 12 are shown here.

Other providers in Corpus Christi