Dr John Chuwon Choi, MD - Medicare Ophthalmology in Warrenville, IL

  1. Home
  2. Ophthalmology
  3. IL
  4. Warrenville
Dr John Chuwon Choi, MD is a medicare enrolled "Ophthalmology" physician in Warrenville, Illinois. He went to Harvard Medical School and graduated in 1990 and has 34 years of diverse experience with area of expertise as Ophthalmology. His current practice location is 28375 Davis Pkwy, Suite 905, Warrenville, Illinois. You can reach out to his office (for appointments etc.) via phone at (630) 836-1616.

Dr John Chuwon Choi is licensed to practice in Illinois (license number ) 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 1699765230.

Contact Information

Dr John Chuwon Choi, MD
28375 Davis Pkwy, Suite 905,
Warrenville, IL 60555-3030
(630) 836-1616
(630) 836-1612

Map and Direction




Physician's Profile

Full NameDr John Chuwon Choi
GenderMale
SpecialityOphthalmology
Experience34 Years
Location28375 Davis Pkwy, Warrenville, 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 John Chuwon Choi attended and graduated from Harvard Medical School in 1990
  NPI Data:
  • NPI Number: 1699765230
  • Provider Enumeration Date: 10/25/2005
  • Last Update Date: 10/12/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 4082717921
  • Enrollment ID: I20070313000453

Medical Identifiers

Medical identifiers for Dr John Chuwon Choi such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1699765230NPI-NPPES
02233155OtherILBCBS PROVIDER NUMBER

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Central Dupage HospitalWinfield, ILHospital

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 John Chuwon Choi allows following entities to bill medicare on his behalf.
Entity NameWoosuk S Yoon
Entity TypePractitioner - Ophthalmology
Entity IdentifiersNPI Number: 1295844934
PECOS PAC ID: 7315988375
Enrollment ID: I20050519000687
Entity NameJohn C Choi Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1730224544
PECOS PAC ID: 3678677333
Enrollment ID: O20070406000043
Entity NameRockford Eye & Laser Center Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073015434
PECOS PAC ID: 3274888706
Enrollment ID: O20180625000139

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 John Chuwon Choi 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 John Chuwon Choi, MD
28375 Davis Pkwy, Suite 905,
Warrenville, IL 60555-3030

Ph: (630) 836-1616		Dr John Chuwon Choi, MD
28375 Davis Pkwy, Suite 905,
Warrenville, IL 60555-3030

Ph: (630) 836-1616

Reviews and Comments


Ophthalmology Doctors in Warrenville, 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).

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.