William P Sullivan, DO - Medicare Emergency Medicine in Frankfort, IL

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William P Sullivan, DO is a medicare enrolled "Emergency Medicine" physician in Frankfort, Illinois. He went to New York College Of Osteo Medicine Of New York Institute Of Technology and graduated in 1992 and has 33 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Osf Multi-specialty Group, Rochelle Community Hospital Association and his current practice location is 21200 S La Grange Rd # 365, Frankfort, Illinois. You can reach out to his office (for appointments etc.) via phone at (877) 778-5449.

William P Sullivan is licensed to practice in Illinois (license number 036088666) 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 1902911027.

Contact Information

William P Sullivan, DO
21200 S La Grange Rd # 365,
Frankfort, IL 60423-2003
(877) 778-5449
(877) 778-5449

Map and Direction




Physician's Profile

Full NameWilliam P Sullivan
GenderMale
SpecialityEmergency Medicine
Experience33 Years
Location21200 S La Grange Rd # 365, Frankfort, 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:
  • William P Sullivan attended and graduated from New York College Of Osteo Medicine Of New York Institute Of Technology in 1992
  NPI Data:
  • NPI Number: 1902911027
  • Provider Enumeration Date: 08/20/2006
  • Last Update Date: 03/14/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7810885035
  • Enrollment ID: I20040309000923

Medical Identifiers

Medical identifiers for William P Sullivan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1902911027NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 02001489A (Indiana)Secondary
207P00000XEmergency Medicine 036088666 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ottawa Regional Hospital Dba Osf Saint Elizabeth Mdl CtrOttawa, ILHospital
Rochelle Community HospitalRochelle, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Osf Multi-specialty Group36788897891848
Rochelle Community Hospital Association478958182830

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 P Sullivan allows following entities to bill medicare on his behalf.
Entity NameRockford Health Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043242886
PECOS PAC ID: 2567374036
Enrollment ID: O20031103000584
Entity NameThe Board Of Trustees Of The University Of Illinois
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1386863819
PECOS PAC ID: 3072422716
Enrollment ID: O20031112000158
Entity NameRochelle Community Hospital Association
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568518322
PECOS PAC ID: 4789581828
Enrollment ID: O20031216000867
Entity NamePekin Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245355411
PECOS PAC ID: 4789676438
Enrollment ID: O20040401000798
Entity NameRochelle Community Hospital Association
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1821053216
PECOS PAC ID: 4789581828
Enrollment ID: O20100727000562
Entity NameOsf Multi-specialty Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922445527
PECOS PAC ID: 3678889789
Enrollment ID: O20150904000279
Entity NameEpss, Llc- Metro Series
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124782305
PECOS PAC ID: 6608266713
Enrollment ID: O20211203002440

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 P Sullivan 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 P Sullivan, DO
21200 S La Grange Rd # 365,
Frankfort, IL 60423-2003

Ph: (877) 778-5449		William P Sullivan, DO
21200 S La Grange Rd # 365,
Frankfort, IL 60423-2003

Ph: (877) 778-5449

Reviews and Comments


Emergency Medicine Doctors in Frankfort, IL


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).

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