Dr Keston M John, MD - Medicare Obstetrics & Gynecology in Chicago, IL

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Dr Keston M John, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Chicago, Illinois. His current practice location is 1500 S California, F-206, Chicago, Illinois. You can reach out to his office (for appointments etc.) via phone at (773) 257-6613.

Dr Keston M John is licensed to practice in Illinois (license number 125073716) 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 1417519794.

Contact Information

Dr Keston M John, MD
1500 S California, F-206,
Chicago, IL 60608
(773) 257-6613
(773) 257-6359

Map and Direction




Physician's Profile

Full NameDr Keston M John
GenderMale
SpecialityObstetrics & Gynecology
Location1500 S California, Chicago, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1417519794
  • Provider Enumeration Date: 07/08/2019
  • Last Update Date: 07/08/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 4981051331
  • Enrollment ID: I20231107003453

Medical Identifiers

Medical identifiers for Dr Keston M John such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1417519794NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 125073716 (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. Dr Keston M John allows following entities to bill medicare on his behalf.
Entity NameGenesis Health System
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1477654945
PECOS PAC ID: 7214841436
Enrollment ID: O20031113000044
Entity NameCommunity Health Care Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1932193224
PECOS PAC ID: 9830008895
Enrollment ID: O20040317000776

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 Keston M John 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 Keston M John, MD
1500 S California, F-206,
Chicago, IL 60608

Ph: (773) 257-6613		Dr Keston M John, MD
1500 S California, F-206,
Chicago, IL 60608

Ph: (773) 257-6613

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.

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