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DR. KESTON M JOHN MD
NPI 1417519794
Obstetrics & Gynecology in Chicago, IL

Active since July 08, 2019PECOS EnrolledAccepts Medicare Assignment
1500 S CALIFORNIA, F-206, CHICAGO, IL 60608(773) 257-6613(773) 257-6359 Get Directions Write a Review

NPPES record last updated: July 8, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Keston M John Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KESTON M JOHN MD (NPI 1417519794) is an individual obstetrics & gynecology provider in Chicago, Illinois, licensed in Illinois (125073716) and active in the NPI registry since July 2019. He is enrolled in Medicare PECOS and is a graduate of Other (2015).

NPPES Registry Identity

NPI1417519794
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameDR. KESTON M JOHNCredential: MD
Location Address1500 S CALIFORNIA, F-206Chicago, IL 60608
Mailing Address1500 S California, F-206Chicago, IL 60608 · (773) 257-6613 · Fax (773) 257-6359
Phone(773) 257-6613
Fax(773) 257-6359
Sole ProprietorNo
Medical School CMSOtherGraduated 2015
Enumeration DateJuly 8, 2019
✔ NPI 1417519794 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in IL · 125073716
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1500 S CALIFORNIA, Chicago, IL 60608
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Keston M John Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4981051331
PECOS Enrollment IDI20250805000689
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Keston John reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Access Community Health Network
0.2 mi
Federally Qualified Health Center (FQHC)
2653 W OGDEN AVE
Chicago, IL 60608
  • Reassigned Medicare billing, Illinois enrollment
  • 413 clinicians in this Medicare group
NPI 1912192253 (773) 257-6672
Genesis Health System
146 mi
Clinic/Center
4017 DEVILS GLEN RD
Bettendorf, IA 52722
  • Reassigned Medicare billing, Iowa enrollment
  • 300 clinicians in this Medicare group
NPI 1497772008 (563) 421-3700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60608 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. LAURA MICHELLE GARCIA
Nurse Practitioner
1500 S CALIFORNIA
CHICAGO, IL 60608
Cook County (773) 257-6241
MOUNT SINAI MEDICAL CENTER
General Acute Care Hospital (Children)
1500 S CALIFORNIA, MOUNT SINAI CHILDREN'S HOSPITAL
CHICAGO, IL 60608
Cook County (773) 257-2000
DR. SUHAIR A. ALDEWAIREY M.D.
Hospitalist
1500 S CALIFORNIA
CHICAGO, IL 60608
Cook County (626) 689-9333

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Keston John's NPI number?

The NPI number for Keston John is 1417519794. It was assigned to this individual provider in the NPPES registry on July 8, 2019.

Where is Keston John located?

Keston John practices at 1500 S California F-206, Chicago, IL 60608. The listed phone number is (773) 257-6613.

What is Keston John's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Keston John enrolled in Medicare?

Yes. Keston John is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Keston John's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Keston John reassigns Medicare benefits to 2 organizations: Access Community Health Network (Chicago, IL) and Genesis Health System (Bettendorf, IA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Keston John's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Keston John accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Keston John as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Keston John was last updated on July 8, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.