Dr William Addison Warren, MD - Medicare Internal Medicine in Laurel, MD

Dr William Addison Warren, MD is a medicare enrolled "Internal Medicine" physician in Laurel, Maryland. His current practice location is 8871 Gorman Road, Ste 300, Laurel, Maryland. You can reach out to his office (for appointments etc.) via phone at (301) 498-3150.

Dr William Addison Warren is licensed to practice in Maryland (license number D13916) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1669478285.

Contact Information

Dr William Addison Warren, MD
8871 Gorman Road, Ste 300,
Laurel, MD 20723
(301) 498-3150
(301) 490-2411

Map and Direction




Physician's Profile

Full NameDr William Addison Warren
GenderMale
SpecialityInternal Medicine
Location8871 Gorman Road, Laurel, Maryland
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1669478285
  • Provider Enumeration Date: 06/28/2005
  • Last Update Date: 06/06/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 8224068986
  • Enrollment ID: I20110520000524

Medical Identifiers

Medical identifiers for Dr William Addison Warren such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1669478285NPI-NPPES
80160003OtherDCBLUE SHIELD NATIONAL AREA
411701800MedicaidMD
36778001OtherMDBLUE SHIELD OF MD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine D13916 (Maryland)Primary
207RP1001XInternal Medicine - Pulmonary Disease D13916 (Maryland)Secondary

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 William Addison Warren allows following entities to bill medicare on his behalf.
Entity NameLifebridge Community Physicians Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174815807
PECOS PAC ID: 3678751468
Enrollment ID: O20110627000318

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 William Addison Warren 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 William Addison Warren, MD
8871 Gorman Road, Ste 300,
Laurel, MD 20723

Ph: (301) 498-3150
Dr William Addison Warren, MD
8871 Gorman Road, Ste 300,
Laurel, MD 20723

Ph: (301) 498-3150

Reviews and Comments


Internal Medicine Doctors in Laurel, MD

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Dr. Padmaja S Udapi, M.D.
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Practice Location: 7350 Van Dusen Rd, Suite# 380, Laurel, MD 20707
Phone: 301-776-6514    Fax: 301-776-6592

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.