Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Karen J Chang-Chen, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1508916495

Karen J Chang-Chen, MD is an Endocrinology in Chesterfield, Missouri. Qualified in 2003, 23 years ago. Practices with Endocrine Associates, LLC, a 4-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
23
Licensed in
MO
In the registry since
2007
Specialties on file
2
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

224 S Woods Mill Rd Ste 480S
Chesterfield, MO 63017
Phone: (636) 685-7744
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 2006018028 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence 2006018028 (MO)

Record details

NPI number1508916495
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 11, 2007
Last updated in NPPESJuly 28, 2020
Certification dateJuly 28, 2020

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Endocrine Associates, Llc — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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