William J Tester, MD - Medicare Hematology/oncology in Philadelphia, PA

William J Tester, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Philadelphia, Pennsylvania. He went to Hahnemann University College Of Medicine and graduated in 1972 and has 52 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Jefferson University Physicians and his current practice location is 925 Chestnut St Ste 320a, Philadelphia, Pennsylvania. You can reach out to his office (for appointments etc.) via phone at (215) 955-8874.

William J Tester is licensed to practice in Pennsylvania (license number MD021791E) 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 1386613693.

Contact Information

William J Tester, MD
925 Chestnut St Ste 320a,
Philadelphia, PA 19107
(215) 955-8874
(215) 955-2340

Map and Direction




Physician's Profile

Full NameWilliam J Tester
GenderMale
SpecialityHematology/oncology
Experience52 Years
Location925 Chestnut St Ste 320a, 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:
  • William J Tester attended and graduated from Hahnemann University College Of Medicine in 1972
  NPI Data:
  • NPI Number: 1386613693
  • Provider Enumeration Date: 03/17/2006
  • Last Update Date: 11/09/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 5496931396
  • Enrollment ID: I20110510000624

Medical Identifiers

Medical identifiers for William J Tester such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1386613693NPI-NPPES
0009201560004MedicaidPA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RX0202XInternal Medicine - Medical Oncology MD021791E (Pennsylvania)Secondary
207RH0003XInternal Medicine - Hematology & Oncology MD021791E (Pennsylvania)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Thomas Jefferson University HospitalPhiladelphia, PAHospital
Jefferson Stratford HospitalStratford, NJHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Jefferson University Physicians79118191801273

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. William J Tester allows following entities to bill medicare on his behalf.
Entity NameJefferson University Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326093675
PECOS PAC ID: 7911819180
Enrollment ID: O20040225000232
Entity NameAbington Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1730122789
PECOS PAC ID: 3274437736
Enrollment ID: O20040325000316

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. William J Tester 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
William J Tester, MD
925 Chestnut St Ste 320a,
Philadelphia, PA 19107-4216

Ph: (215) 955-8874
William J Tester, MD
925 Chestnut St Ste 320a,
Philadelphia, PA 19107

Ph: (215) 955-8874

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.

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