Dr Karen Hsia Ma, MD, PHARMD - Medicare Gastroenterology in Elmhurst, IL

Dr Karen Hsia Ma, MD, PHARMD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Elmhurst, Illinois. She graduated from medical school in 2013 and has 11 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice Elmhurst Memorial Healthcare and her current practice location is 155 E Brush Hill Rd, Elmhurst, Illinois. You can reach out to her office (for appointments etc.) via phone at (331) 221-9003.

Dr Karen Hsia Ma is licensed to practice in Illinois (license number 036-139551) 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 1124464789.

Contact Information

Dr Karen Hsia Ma, MD, PHARMD
155 E Brush Hill Rd,
Elmhurst, IL 60126-5658
(331) 221-9003
(331) 221-2743



Physician's Profile

Full NameDr Karen Hsia Ma
GenderFemale
SpecialityGastroenterology
Experience11 Years
Location155 E Brush Hill Rd, Elmhurst, Illinois
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:
  • Dr Karen Hsia Ma graduated from medical school in 2013
  NPI Data:
  • NPI Number: 1124464789
  • Provider Enumeration Date: 05/21/2013
  • Last Update Date: 01/13/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 0244522597
  • Enrollment ID: I20190819003860

Medical Identifiers

Medical identifiers for Dr Karen Hsia Ma such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1124464789NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 036-139551 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Elmhurst Memorial HospitalElmhurst, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Elmhurst Memorial Healthcare9638168602182

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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. Dr Karen Hsia Ma allows following entities to bill medicare on her behalf.
Entity NameRush University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093819542
PECOS PAC ID: 5496658874
Enrollment ID: O20040202000228

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Entity NameElmhurst Memorial Healthcare
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1457493454
PECOS PAC ID: 9638168602
Enrollment ID: O20040506001298

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Entity NameNorthshore University Healthsystem Faculty Practice Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1497701882
PECOS PAC ID: 2163334699
Enrollment ID: O20040524000118

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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. Dr Karen Hsia Ma 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
Dr Karen Hsia Ma, MD, PHARMD
4201 Winfield Rd,
Warrenville, IL 60555-4025

Ph: (331) 221-6377
Dr Karen Hsia Ma, MD, PHARMD
155 E Brush Hill Rd,
Elmhurst, IL 60126-5658

Ph: (331) 221-9003

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Internal Medicine Doctors in Elmhurst, IL

William T O'rourke, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 172 E Schiller St, Elmhurst, IL 60126
Phone: 331-221-0000    Fax: 331-221-2312
Maelen M Pantano, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 172 Schiller St, Elmhurst, IL 60126
Phone: 331-221-9001    Fax: 331-221-2315
Ramier J Lehne,
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 1200 S York St Ste 2000, Elmhurst, IL 60126
Phone: 331-221-9199    
Barbara E Potaczek, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 155 E Brush Hill Rd, Elmhurst, IL 60126
Phone: 331-221-8952    Fax: 331-221-3782
Dr. Lalitha Dileep-ansal, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 155 E Brush Hill Rd, Elmhurst, IL 60126
Phone: 331-221-8952    Fax: 331-221-3782
Dr. Omar Shamsi, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1200 S York St, Suite 1240, Elmhurst, IL 60126
Phone: 331-221-6140    Fax: 331-221-3838
Dhara Naik, DO
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 172 E Schiller St, Elmhurst, IL 60126
Phone: 331-221-0000    Fax: 331-221-2312

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