Dr William L Peterson, MD - Medicare Gastroenterology in Springfield, IL

Dr William L Peterson, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Springfield, Illinois. He went to University Of North Dakota School Of Medicine and graduated in 1981 and has 43 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Springfield Clinic Llp and his current practice location is 1025 S 6th St, Springfield, Illinois. You can reach out to his office (for appointments etc.) via phone at (217) 528-7541.

Dr William L Peterson is licensed to practice in Illinois (license number 036-082538) 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 1174623854.

Contact Information

Dr William L Peterson, MD
1025 S 6th St,
Springfield, IL 62703-2403
(217) 528-7541
(217) 788-5830



Physician's Profile

Full NameDr William L Peterson
GenderMale
SpecialityGastroenterology
Experience43 Years
Location1025 S 6th St, Springfield, 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 L Peterson attended and graduated from University Of North Dakota School Of Medicine in 1981
  NPI Data:
  • NPI Number: 1174623854
  • Provider Enumeration Date: 09/23/2006
  • Last Update Date: 05/21/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 1658337134
  • Enrollment ID: I20041207000108

Medical Identifiers

Medical identifiers for Dr William L Peterson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1174623854NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 036-082538 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Memorial Medical CenterSpringfield, ILHospital
St Johns HospitalSpringfield, ILHospital
Taylorville Memorial HospitalTaylorville, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Springfield Clinic Llp0547166076669

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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 L Peterson allows following entities to bill medicare on his behalf.
Entity NameSpringfield Clinic Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1780638478
PECOS PAC ID: 0547166076
Enrollment ID: O20040331000826

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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 L Peterson 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 L Peterson, MD
1025 S 6th St,
Springfield, IL 62703-2403

Ph: (217) 528-7541
Dr William L Peterson, MD
1025 S 6th St,
Springfield, IL 62703-2403

Ph: (217) 528-7541

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Internal Medicine Doctors in Springfield, IL

Zachariah Gurnsey, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 751 N Rutledge St, Ste 1100, Springfield, IL 62702
Phone: 217-545-0182    Fax: 217-545-8156
Mr. Eddie Lynn Paulk, D.O.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 2090 Vadalabene Drive, Springfield, IL 62062
Phone: 618-288-5403    Fax: 618-288-6857
Winston J Townsend, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1836 S Macarthur Blvd, Springfield, IL 62704
Phone: 217-789-1403    Fax: 217-789-1825
William R Yu, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 2901 Old Jacksonville Rd, Springfield, IL 62704
Phone: 217-698-9722    Fax: 217-698-8012
Dr. Susan M. O'neal, D.O.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 701 N 1st St, Springfield, IL 62781
Phone: 217-528-7541    
Dr. Mukul Bhattarai, MD.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 747 N Rutledge St Fl 4, Springfield, IL 62702
Phone: 217-545-8000    Fax: 217-545-7877
Nathalie Emma-marie Foray, DO
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 751 N Rutledge St Ste 1700, Springfield, IL 62702
Phone: 217-545-8000    Fax: 217-545-1229

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