Dr I-wen Chang, MD - Medicare Hematology/oncology in Lawrenceville, GA

Dr I-wen Chang, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Lawrenceville, Georgia. She graduated from medical school in 2001 and has 23 years of diverse experience with area of expertise as Hematology/oncology. She is a member of the group practice North Atlanta Oncology Services Llc and her current practice location is 631 Professional Dr Ste 450, Lawrenceville, Georgia. You can reach out to her office (for appointments etc.) via phone at (770) 963-8030.

Dr I-wen Chang is licensed to practice in Georgia (license number 079105) 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 1912034471.

Contact Information

Dr I-wen Chang, MD
631 Professional Dr Ste 450,
Lawrenceville, GA 30046-3370
(770) 963-8030
(770) 339-9577

Map and Direction




Physician's Profile

Full NameDr I-wen Chang
GenderFemale
SpecialityHematology/oncology
Experience23 Years
Location631 Professional Dr Ste 450, Lawrenceville, Georgia
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 I-wen Chang graduated from medical school in 2001
  NPI Data:
  • NPI Number: 1912034471
  • Provider Enumeration Date: 02/28/2007
  • Last Update Date: 03/08/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 5496847071
  • Enrollment ID: I20180525000793

Medical Identifiers

Medical identifiers for Dr I-wen Chang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1912034471NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 200300757 (North Carolina)Secondary
207RH0003XInternal Medicine - Hematology & Oncology 079105 (Georgia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northside HospitalAtlanta, GAHospital
Northside Hospital GwinnettLawrenceville, GAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
North Atlanta Oncology Services Llc185062742324

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 I-wen Chang allows following entities to bill medicare on her behalf.
Entity NameGwinnett Hospital System, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952340994
PECOS PAC ID: 8123916426
Enrollment ID: O20040309000009
Entity NameGwinnett Physician Group, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1578574661
PECOS PAC ID: 9133211139
Enrollment ID: O20070822001035
Entity NameNorth Atlanta Oncology Services Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1871055434
PECOS PAC ID: 1850627423
Enrollment ID: O20190719002959

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 I-wen Chang 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 I-wen Chang, MD
631 Professional Dr Ste 450,
Lawrenceville, GA 30046-3370

Ph: (770) 963-8030
Dr I-wen Chang, MD
631 Professional Dr Ste 450,
Lawrenceville, GA 30046-3370

Ph: (770) 963-8030

Reviews and Comments


Internal Medicine Doctors in Lawrenceville, GA

Dr. Angus C Howard Jr., M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 595 Hurricane Shoals Rd Nw Ste 100, Lawrenceville, GA 30046
Phone: 404-645-7150    
Gary Mcmorris, MD
Hematology & Oncology
Medicare: May Accept Medicare Assignments
Practice Location: 1180 Mckendree Church Rd, Suite 204, Lawrenceville, GA 30043
Phone: 770-682-1717    Fax: 770-682-1723
Niraj Sharma, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 575 Professional Dr Ste 400, Lawrenceville, GA 30046
Phone: 404-962-6000    Fax: 404-962-6001
Dr. Karuna Kusan, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1960 Riverside Pkwy, Suite 101, Lawrenceville, GA 30043
Phone: 770-995-0466    Fax: 770-995-0472
Mr. Spencer I Rozin, MD FACP
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 721 Wellness Way, Suite 220, Lawrenceville, GA 30046
Phone: 770-709-0900    Fax: 770-709-7444
Praveen Sivakumaran, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 631 Professional Dr Ste 450, Lawrenceville, GA 30046
Phone: 770-963-8030    Fax: 770-339-9577
Dr. Yan Lin, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1000 Medical Center Blvd, Lawrenceville, GA 30046
Phone: 678-312-3294    Fax: 678-312-3294

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.