Karen J Chang-chen, MD - Medicare Endocrinology in Chesterfield, MO

Karen J Chang-chen, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Chesterfield, Missouri. She graduated from medical school in 2003 and has 21 years of diverse experience with area of expertise as Endocrinology. She is a member of the group practice Endocrine Associates, Llc and her current practice location is 224 S Woods Mill Rd Ste 480s, Chesterfield, Missouri. You can reach out to her office (for appointments etc.) via phone at (636) 685-7744.

Karen J Chang-chen is licensed to practice in Missouri (license number 2006018028) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1508916495.

Contact Information

Karen J Chang-chen, MD
224 S Woods Mill Rd Ste 480s,
Chesterfield, MO 63017
(636) 685-7744
Not Available



Physician's Profile

Full NameKaren J Chang-chen
GenderFemale
SpecialityEndocrinology
Experience21 Years
Location224 S Woods Mill Rd Ste 480s, Chesterfield, Missouri
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Karen J Chang-chen graduated from medical school in 2003
  NPI Data:
  • NPI Number: 1508916495
  • Provider Enumeration Date: 01/11/2007
  • Last Update Date: 07/28/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 3577617687
  • Enrollment ID: I20170116000208

Medical Identifiers

Medical identifiers for Karen J Chang-chen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1508916495NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism 2006018028 (Missouri)Primary
207R00000XInternal Medicine 2006018028 (Missouri)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
St Lukes HospitalChesterfield, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Endocrine Associates, Llc37798653813

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Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Karen J Chang-chen allows following entities to bill medicare on her behalf.
Entity NameEndocrine Associates, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1134670367
PECOS PAC ID: 3779865381
Enrollment ID: O20170206000159

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Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Karen J Chang-chen is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Karen J Chang-chen, MD
224 S Woods Mill Rd Ste 480s,
Chesterfield, MO 63017-3609

Ph: (636) 685-7744
Karen J Chang-chen, MD
224 S Woods Mill Rd Ste 480s,
Chesterfield, MO 63017

Ph: (636) 685-7744

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Internal Medicine Doctors in Chesterfield, MO

Lovepreet Singh Randhawa, MD
Endocrinology, Diabetes & Metabolism
Medicare: Not Enrolled in Medicare
Practice Location: 224 S Woods Mill Rd, Chesterfield, MO 63017
Phone: 314-205-6050    Fax: 314-205-6350
Rachel Lynn Fishman Oiknine, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 222 S Woods Mill Rd, Suite 410n, Chesterfield, MO 63017
Phone: 314-469-6224    Fax: 314-469-0744
Xiaoling Wu, MD
Endocrinology, Diabetes & Metabolism
Medicare: Medicare Enrolled
Practice Location: 224 S Woods Mill Rd, Suite 370 South, Chesterfield, MO 63017
Phone: 314-878-2460    
Daniel B Bauwens, MD
Endocrinology, Diabetes & Metabolism
Medicare: Medicare Enrolled
Practice Location: 232 S Woods Mill Rd, Chesterfield, MO 63017
Phone: 314-576-5023    
Michael Carl Fusco, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Not Enrolled in Medicare
Practice Location: 14528 S Outer 40, Suite 300, Chesterfield, MO 63017
Phone: 314-214-8100    Fax: 314-214-8233
David H Cort, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Medicare Enrolled
Practice Location: 226 S Woods Mill Rd, Suite 52 West, Chesterfield, MO 63017
Phone: 314-434-2399    Fax: 314-434-5653
Meghashyam Jayateerth Koti, MD
Endocrinology, Diabetes & Metabolism
Medicare: Not Enrolled in Medicare
Practice Location: 15740 S Outer 40 Rd # C, Chesterfield, MO 63017
Phone: 636-735-4963    

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