Dr Won S Chang, MD - Medicare Radiation Oncology in Philadelphia, PA

Dr Won S Chang, MD is a medicare enrolled "Radiology - Radiation Oncology" physician in Philadelphia, Pennsylvania. He went to Temple University School Of Medicine and graduated in 1995 and has 30 years of diverse experience with area of expertise as Radiation Oncology. He is a member of the group practice Alliance Cancer Specialists and his current practice location is 9910 Roosevelt Blvd, Philadelphia, Pennsylvania. You can reach out to his office (for appointments etc.) via phone at (215) 658-4669.

Dr Won S Chang is licensed to practice in Pennsylvania (license number MD071181L) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1992787618.

Contact Information

Dr Won S Chang, MD
9910 Roosevelt Blvd,
Philadelphia, PA 19115-1705
(215) 658-4669
(215) 671-4307

Map and Direction




Physician's Profile

Full NameDr Won S Chang
GenderMale
SpecialityRadiation Oncology
Experience30 Years
Location9910 Roosevelt Blvd, Philadelphia, Pennsylvania
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Won S Chang attended and graduated from Temple University School Of Medicine in 1995
  NPI Data:
  • NPI Number: 1992787618
  • Provider Enumeration Date: 11/17/2005
  • Last Update Date: 02/17/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3173650033
  • Enrollment ID: I20100423000738

Medical Identifiers

Medical identifiers for Dr Won S Chang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1992787618NPI-NPPES
0018183900003MedicaidPA
910876OtherPABCBS PA
1127966OtherPAKEYSTONE MERCY
0811079000OtherPAKEYSTONE 65
920006241OtherPARAILROAD MEDICARE
0018183900001MedicaidPA
0711079000OtherPAKEYSTONE HEALTH PLAN EAST

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0001XRadiology - Radiation Oncology MD071181L (Pennsylvania)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Alliance Cancer Specialists721419409159

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 Won S Chang allows following entities to bill medicare on his behalf.
Entity NameAlliance Cancer Specialists
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1487923686
PECOS PAC ID: 7214194091
Enrollment ID: O20120207000029

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 Won S 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 Won S Chang, MD
Po Box 780595,
Philadelphia, PA 19178-0595

Ph: (800) 331-9294
Dr Won S Chang, MD
9910 Roosevelt Blvd,
Philadelphia, PA 19115-1705

Ph: (215) 658-4669

Reviews and Comments


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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).

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