Dr William Whittier, MD - Medicare Nephrology in Chicago, IL

Dr William Whittier, MD is a medicare enrolled "Internal Medicine - Nephrology" physician in Chicago, Illinois. He went to Northeastern Ohio University College Of Medicine and graduated in 1998 and has 26 years of diverse experience with area of expertise as Nephrology. He is a member of the group practice Edmund J Lewis Md And Associates and his current practice location is 1426 W Washington Blvd, Chicago, Illinois. You can reach out to his office (for appointments etc.) via phone at (312) 829-1424.

Dr William Whittier is licensed to practice in Illinois (license number 036104632) 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 1609981471.

Contact Information

Dr William Whittier, MD
1426 W Washington Blvd,
Chicago, IL 60607-1821
(312) 829-1424
(312) 850-8431

Map and Direction




Physician's Profile

Full NameDr William Whittier
GenderMale
SpecialityNephrology
Experience26 Years
Location1426 W Washington Blvd, Chicago, Illinois
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 William Whittier attended and graduated from Northeastern Ohio University College Of Medicine in 1998
  NPI Data:
  • NPI Number: 1609981471
  • Provider Enumeration Date: 08/20/2006
  • Last Update Date: 06/01/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 5991991887
  • Enrollment ID: I20101117001297

Medical Identifiers

Medical identifiers for Dr William Whittier such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609981471NPI-NPPES
01615381OtherBC/BS NUMBER
P00071833OtherRR MEDICARE
0316104632MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RN0300XInternal Medicine - Nephrology 036104632 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Circle Medical ManagementChicago, ILDialysis facility
Nx Stage Kidney CareOak brook, ILDialysis facility
Rush University Medical CenterChicago, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Edmund J Lewis Md And Associates63058605865

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 Whittier allows following entities to bill medicare on his behalf.
Entity NameEdmund J Lewis Md & Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588676944
PECOS PAC ID: 6305860586
Enrollment ID: O20060116000389

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 Whittier 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 Whittier, MD
120 W 22nd St Ste 200,
Oak Brook, IL 60523-1563

Ph: (630) 575-5000
Dr William Whittier, MD
1426 W Washington Blvd,
Chicago, IL 60607-1821

Ph: (312) 829-1424

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).

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.