Herbert Sier, MD - Medicare Internal Medicine in Chicago, IL

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Herbert Sier, MD is a medicare enrolled "Internal Medicine - Geriatric Medicine" physician in Chicago, Illinois. His current practice location is 680 N Lake Shore Dr, Suite 1000, Chicago, Illinois. You can reach out to his office (for appointments etc.) via phone at (312) 695-9797.

Herbert Sier is licensed to practice in Illinois (license number ) 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 1881627446.

Contact Information

Herbert Sier, MD
680 N Lake Shore Dr, Suite 1000,
Chicago, IL 60611-4546
(312) 695-9797
Not Available

Map and Direction




Physician's Profile

Full NameHerbert Sier
GenderMale
SpecialityInternal Medicine - Geriatric Medicine
Location680 N Lake Shore Dr, Chicago, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1881627446
  • Provider Enumeration Date: 07/08/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 0244292043
  • Enrollment ID: I20120618000466

Medical Identifiers

Medical identifiers for Herbert Sier such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1881627446NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0300XInternal Medicine - Geriatric Medicine (Illinois)Primary

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. Herbert Sier allows following entities to bill medicare on his behalf.
Entity NameUc Regents
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760430847
PECOS PAC ID: 7416869516
Enrollment ID: O20031118000906
Entity NameRegents Of The University Of
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366590762
PECOS PAC ID: 3779689518
Enrollment ID: O20070510000532

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. Herbert Sier 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
Herbert Sier, MD
680 N Lake Shore Dr, Suite 1000,
Chicago, IL 60611-4546

Ph: (312) 695-9797		Herbert Sier, MD
680 N Lake Shore Dr, Suite 1000,
Chicago, IL 60611-4546

Ph: (312) 695-9797

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.