Dr Freager Sinclair Williams, MD - Medicare Obstetrics/gynecology in Oakbrook Terrace, IL

Dr Freager Sinclair Williams, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Oakbrook Terrace, Illinois. He went to New York University Medical College - Nlg and graduated in 1996 and has 28 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice Loyola University Medical Center and his current practice location is 17w740 22nd St, Oakbrook Terrace, Illinois. You can reach out to his office (for appointments etc.) via phone at (630) 627-7162.

Dr Freager Sinclair Williams is licensed to practice in Illinois (license number 036-107930) 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 1528103207.

Contact Information

Dr Freager Sinclair Williams, MD
17w740 22nd St,
Oakbrook Terrace, IL 60181-4402
(630) 627-7162
Not Available

Map and Direction




Physician's Profile

Full NameDr Freager Sinclair Williams
GenderMale
SpecialityObstetrics/gynecology
Experience28 Years
Location17w740 22nd St, Oakbrook Terrace, 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 Freager Sinclair Williams attended and graduated from New York University Medical College - Nlg in 1996
  NPI Data:
  • NPI Number: 1528103207
  • Provider Enumeration Date: 02/21/2007
  • Last Update Date: 05/05/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 3678645348
  • Enrollment ID: I20080712000136

Medical Identifiers

Medical identifiers for Dr Freager Sinclair Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1528103207NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 036-107930 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Loyola University Medical CenterMaywood, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Loyola University Medical Center3779488903857

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 Freager Sinclair Williams allows following entities to bill medicare on his behalf.
Entity NameLoyola University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336159961
PECOS PAC ID: 3779488903
Enrollment ID: O20031202000027

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 Freager Sinclair Williams 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 Freager Sinclair Williams, MD
17w740 22nd St,
Oakbrook Terrace, IL 60181-4402

Ph: (630) 627-7162
Dr Freager Sinclair Williams, MD
17w740 22nd St,
Oakbrook Terrace, IL 60181-4402

Ph: (630) 627-7162

Reviews and Comments


Obstetrics & Gynecology Doctors in Oakbrook Terrace, IL

Kalee A Ahlin, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 17w740 22nd Street, Oakbrook Terrace, IL 60181
Phone: 630-327-7399    Fax: 630-327-7382
Dr. Sarah Ann Wagner, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 17w740 22nd St, Oakbrook Terrace, IL 60181
Phone: 630-627-7248    Fax: 630-627-7382
Thomas R Carver, MD
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 1s132 Summit Ave Ste 305, Oakbrook Terrace, IL 60181
Phone: 630-627-4954    Fax: 630-527-0441
Dr. James H Hlavacek, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 2 Mid America Plz, Suie 720, Oakbrook Terrace, IL 60181
Phone: 630-571-0055    Fax: 630-571-1335
Dr. Suzanne Kavic, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 1s260 Summit Ave, Oakbrook Terrace, IL 60181
Phone: 630-953-6669    Fax: 630-953-6665

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.