Keston M. John, MD
Obstetrics & Gynecology Physician · Chicago, IL
Keston M. John, MD is an obstetrics & gynecology physician with a practice address in Chicago, Illinois, and NPI 1417519794, issued on Jul 8, 2019. Check the license (Illinois 125073716, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Keston M. John
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 125073716 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1500 S California, Chicago, IL 60608
- Phone
- (773) 257-6613
- Enumerated
- Jul 8, 2019
- Record last updated
- Jul 8, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (773) 257-6359
- Medicare enrollment
- Enrolled (PECOS I20250805000689); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 1500 S California
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Suhair Aldewairey, M.D.Hospitalist Physician1932428281
- Laura GarciaNurse Practitioner1104313667
Verify Keston M. John in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 125073716Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
20 Medicare Part D claims for 13 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $4,980.15
10 payments; by number, the most common kind was travel and lodging; the largest payer was Intuitive Surgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Access Community Health NetworkChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Keston M. John among 2,062 obstetrics & gynecology physician records in Illinois
Keston M. John, MD is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 81% of them.
- NPI issued2019 · 81% of these records are older, 15% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2015 · median 2006 among the 1,168 with a school on file
- Record last updated2019 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
700 obstetrics & gynecology physician records list a practice address in Chicago
They are 700 of the 63,379 NPPES records with a practice address in Chicago, and 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Chicago → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Karla Clark, MDChicago, IL 606081598706699
- Marlene Green, M.D.Chicago, IL 606081447333166
- Theodore Jarrett, M.D.Chicago, IL 606081356435838
- Ian Jasenof, M.D.Chicago, IL 606081578509428
- Narendra Karmali, M.D.Chicago, IL 606081962504027
- David Michael, MDChicago, IL 606081457434144
- Patrick Michel, M.D.Chicago, IL 606081487639514
- Sylvia Moscoso, M.D.Chicago, IL 606081689649105
Common questions
What is Keston M. John, MD's NPI number?
Keston M. John, MD's National Provider Identifier (NPI) is 1417519794, issued on Jul 8, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Keston M. John, MD located?
The NPPES record lists a practice address at 1500 S California, Chicago, IL, 60608. Phone: (773) 257-6613. Providers update this record themselves, so call before visiting.
How can I verify Keston M. John, MD's license?
NPPES lists Illinois license number 125073716, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Keston M. John, MD prescribe under Medicare Part D?
In 2024, Keston M. John, MD had 20 Medicare Part D claims for 13 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.