William T Derosa, DO - Medicare Medical Oncology in Morristown, NJ

  1. Home
  2. Hematology & Oncology
  3. NJ
  4. Morristown
William T Derosa, DO is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Morristown, New Jersey. He went to At Still University Of Health Sciences, College Of Osteo Med, Kirksville and graduated in 1980 and has 46 years of diverse experience with area of expertise as Medical Oncology. He is a member of the group practice Barnabas Health Medical Group Pc and his current practice location is 95 Madison Ave, Morristown, New Jersey. You can reach out to his office (for appointments etc.) via phone at (973) 538-5210.

William T Derosa is licensed to practice in New Jersey (license number 25MB03927200) 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 1902894991.

Contact Information

William T Derosa, DO
95 Madison Ave,
Morristown, NJ 07960-6092
(973) 538-5210
(973) 644-9657

Map and Direction




Physician's Profile

Full NameWilliam T Derosa
GenderMale
SpecialityMedical Oncology
Experience46 Years
Location95 Madison Ave, Morristown, New Jersey
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 T Derosa attended and graduated from At Still University Of Health Sciences, College Of Osteo Med, Kirksville in 1980
  NPI Data:
  • NPI Number: 1902894991
  • Provider Enumeration Date: 10/12/2005
  • Last Update Date: 07/21/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3072508860
  • Enrollment ID: I20101018000124

Medical Identifiers

Medical identifiers for William T Derosa such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1902894991NPI-NPPES
1092502MedicaidNJ

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 25MB03927200 (New Jersey)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Saint Barnabas Medical CenterLivingston, NJHospital
Morristown Medical CenterMorristown, NJHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Barnabas Health Medical Group Pc9537316955803

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 T Derosa allows following entities to bill medicare on his behalf.
Entity NameRegional Cancer Care Associates Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801850243
PECOS PAC ID: 5294710091
Enrollment ID: O20040623001494
Entity NameBarnabas Health Medical Group Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841557246
PECOS PAC ID: 9537316955
Enrollment ID: O20120820000951

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 T Derosa 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 T Derosa, DO
95 Madison Ave,
Morristown, NJ 07960-6092

Ph: (973) 538-5210		William T Derosa, DO
95 Madison Ave,
Morristown, NJ 07960-6092

Ph: (973) 538-5210

Reviews and Comments


Internal Medicine Doctors in Morristown, NJ

Richard I Watson, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 435 South St, Ste 100, Morristown, NJ 07960
Phone: 973-267-3944    Fax: 973-455-0399
Donna Astiz, MD
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 100 Madison Ave, Morristown, NJ 07960
Phone: 973-971-5595    
Carolina Cabral, M.D.
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 100 Madison Ave, Morristown, NJ 07960
Phone: 973-971-5000    
Dr. Ahsan Mahmood Kazmi, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 55 Madison Ave, Morristown, NJ 07960
Phone: 973-867-6565    
Bassem Ahmed, DO
Hematology & Oncology
Medicare: May Accept Medicare Assignments
Practice Location: 100 Madison Ave, Morristown, NJ 07960
Phone: 973-971-4287    
Jeffrey G Schwartz, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 435 South St, Suite 100, Morristown, NJ 07960
Phone: 973-267-3944    Fax: 973-455-0399
Christine Gerges, DO
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 100 Madison Ave, Morristown, NJ 07960
Phone: 973-971-4287    

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.